last executing test programs: 933.118977ms ago: executing program 2 (id=3): r0 = socket$inet_tcp(0x2, 0x1, 0x6) bind$inet(r0, &(0x7f0000000000)={0x2, 0x1f90, @loopback}, 0x10) setsockopt$inet_tcp_buf(r0, 0x6, 0x1f, &(0x7f0000000100)='espintcp\x00', 0x9) r1 = socket$nl_xfrm(0x10, 0x3, 0x6) sendmsg$nl_xfrm(r1, &(0x7f0000000200)={0x0, 0x0, &(0x7f0000000300)={&(0x7f0000000400)=@newsa={0x10c, 0x10, 0x5, 0x0, 0x0, {{@in=@loopback, @in=@loopback, 0x1f90, 0xffff, 0x1f90, 0xffff, 0x2, 0x20, 0x20, 0x6}, {@in=@loopback, 0x1234, 0x32}, @in=@loopback, {}, {}, {}, 0x0, 0x0, 0x2}, [@encap={0x1c, 0x4, {0x7, 0x1f90, 0x1f90, @in=@loopback}}]}, 0x10c}}, 0x0) r2 = socket$inet_tcp(0x2, 0x1, 0x6) connect$inet(r2, &(0x7f0000000600)={0x2, 0x1f90, @loopback}, 0x10) sendto(r2, &(0x7f0000000700)='test', 0x4, 0x0, 0x0, 0x0) 931.725588ms ago: executing program 0 (id=1): r0 = socket$xdp(0x2c, 0x3, 0x0) setsockopt$XDP_UMEM_REG(r0, 0x11b, 0x4, &(0x7f0000000040)={&(0x7f0000100000)=""/65536, 0x10000, 0x800}, 0x20) setsockopt$XDP_TX_RING(r0, 0x11b, 0x3, &(0x7f0000000180)=0x10, 0x4) setsockopt$XDP_UMEM_COMPLETION_RING(r0, 0x11b, 0x6, &(0x7f00000001c0)=0x10, 0x4) setsockopt$XDP_UMEM_FILL_RING(r0, 0x11b, 0x5, &(0x7f0000000200)=0x10, 0x4) socketpair$unix(0x1, 0x1, 0x0, &(0x7f00000002c0)={0xffffffffffffffff}) ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f0000000300)={'lo\x00', 0x0}) bind$xdp(r0, &(0x7f0000000080)={0x2c, 0x2, r2, 0x0, 0x0}, 0x10) mmap$xdp(&(0x7f0000000000/0x1000)=nil, 0x1000, 0x3, 0x11, r0, 0x80000000) pipe2(&(0x7f0000000400)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) write(r4, &(0x7f0000000500)="0100"/336, 0x150) read(r3, &(0x7f0000000000), 0x150) sendmsg$xdp(r0, &(0x7f0000000600)={0x0, 0x0, 0x0}, 0x0) 893.590878ms ago: executing program 1 (id=2): r0 = socket$nl_netfilter(0x10, 0x3, 0xc) sendmsg$NFT_BATCH(r0, &(0x7f0000000040), 0x0) 893.066828ms ago: executing program 3 (id=4): r0 = socket$nl_netfilter(0x10, 0x3, 0xc) sendmsg$IPCTNL_MSG_TIMEOUT_NEW(r0, &(0x7f0000000040)={0x0, 0x0, &(0x7f0000000080)={&(0x7f00000000c0)={0x3c, 0x0, 0x8, 0x105, 0x0, 0x0, {0x2}, [@CTA_TIMEOUT_NAME={0x9, 0x1, 'syz0\x00'}, @CTA_TIMEOUT_L3PROTO={0x6, 0x2, 0x1, 0x0, 0x800}, @CTA_TIMEOUT_L4PROTO={0x5, 0x3, 0x11}, @CTA_TIMEOUT_DATA={0xc, 0x4, 0x0, 0x1, @udp=[@CTA_TIMEOUT_UDP_UNREPLIED={0x8, 0x1, 0x1, 0x0, 0x1e}]}]}, 0x3c}}, 0x0) r1 = socket$nl_generic(0x10, 0x3, 0x10) sendmsg$nl_generic(r1, &(0x7f0000000200)={0x0, 0x0, &(0x7f0000000180)={&(0x7f00000001c0)=ANY=[@ANYBLOB="1234"], 0x2}, 0x1, 0x0, 0x0, 0x4048011}, 0xc000) 884.575298ms ago: executing program 2 (id=5): r0 = socket$inet_tcp(0x2, 0x1, 0x0) bind$inet(r0, &(0x7f0000000000)={0x2, 0x1a0a, @loopback}, 0x10) listen(r0, 0x5) r1 = fsopen(&(0x7f0000000100)='ceph\x00', 0x0) fsconfig$FSCONFIG_SET_STRING(r1, 0x1, &(0x7f0000000200)='source\x00', &(0x7f0000000300)='127.0.0.1:6666:/\x00', 0x0) fsconfig$FSCONFIG_CMD_CREATE(r1, 0x6, 0x0, 0x0, 0x0) r2 = accept4$inet(r0, 0x0, 0x0, 0x800) write(r2, &(0x7f0000000400)='cephv2\n\x00'/21, 0x15) 31.018989ms ago: executing program 2 (id=6): r0 = socket$netlink(0x10, 0x3, 0x0) sendmsg$netlink(r0, &(0x7f0000000000)={&(0x7f0000000200), 0xc, &(0x7f0000000100)=[{&(0x7f0000000300)=ANY=[@ANYBLOB="4c000000100001060000000000000000000000000000000000000000000000000b00030064756d6d7930000008001f0004000000180012000a00010064756d6d79000000"], 0x4c}], 0x1}, 0x0) r1 = socket$inet(0x2, 0x2, 0x0) ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f0000000000)={'dummy0\x00'}) sendmsg$netlink(r0, &(0x7f0000000100)={&(0x7f0000000200), 0xc, &(0x7f0000000300)=[{&(0x7f0000000400)=ANY=[@ANYBLOB="30000000240005050000000000000000000000000300000000000100ffffffff000000000c00010063616b655f6d7100"], 0x30}], 0x1}, 0x0) 30.824479ms ago: executing program 3 (id=7): mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff) mount(&(0x7f0000000040)=@filename='none\x00', &(0x7f0000000080)='./nfsd\x00', &(0x7f00000000c0)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd/versions\x00', 0x2, 0x0) write(r0, &(0x7f0000000140)='-2 -3 +4\n\x00', 0x9) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./nfsd/portlist\x00', 0x2, 0x0) write(r1, &(0x7f00000001c0)='tcp 2049\n\x00', 0x9) r2 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd/threads\x00', 0x2, 0x0) write(r2, &(0x7f0000000240)='64\n\x00', 0x3) r3 = socket$inet(0x2, 0x1, 0x0) connect$inet(r3, &(0x7f0000000280)={0x2, 0x801, @loopback}, 0x10) nanosleep(&(0x7f0000000300)={0x0, 0x1dcd6500}, 0x0) 25.945659ms ago: executing program 0 (id=14): pipe2$9p(&(0x7f0000000000)={0x0, 0x0}, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./file0\x00', 0x1ff) syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0) mount$9p_fd(0x0, &(0x7f0000000100)='./file0\x00', &(0x7f0000000140), 0x0, &(0x7f0000000200)={'trans=fd,', {'rfdno', 0x3d, r0}, 0x2c, {'wfdno', 0x3d, r1}, 0x2c, {[{@version_9p2000}]}}) write$P9_RVERSION(r1, &(0x7f0000000300)={0x13, 0x65, 0xffff, 0x2000, 0x6, '9P2000'}, 0x13) write$P9_RATTACH(r1, &(0x7f0000000400)={0x13, 0x69, 0x1}, 0x13) openat(0xffffffffffffff9c, &(0x7f0000000500)='./file0/foo\x00', 0x42, 0x1ff) 25.742939ms ago: executing program 1 (id=8): r0 = socket$inet_tcp(0x2, 0x1, 0x0) bind$inet(r0, &(0x7f0000000000)={0x2, 0x1a0b, @loopback}, 0x10) listen(r0, 0x5) r1 = fsopen(&(0x7f0000000100)='ceph\x00', 0x0) fsconfig$FSCONFIG_SET_STRING(r1, 0x1, &(0x7f0000000040)='source\x00', &(0x7f0000000080)='127.0.0.1:6789:/\x00', 0x0) fsconfig$FSCONFIG_CMD_CREATE(r1, 0x6, 0x0, 0x0, 0x0) (async) accept$inet(r0, 0x0, 0x0) sendto$inet(r0, &(0x7f0000000200)='ceph v027\n\x00', 0x10, 0x0, 0x0, 0x0) 0s ago: executing program 2 (id=9): mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./debug\x00', 0x777) mount(0x0, &(0x7f0000000000)='./debug\x00', &(0x7f0000000040)='debugfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./debug/failslab/probability\x00', 0x1, 0x0) write(r0, &(0x7f0000000100)='100\x00', 0x4) r1 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./debug/failslab/interval\x00', 0x1, 0x0) write(r1, &(0x7f0000000180)='1\x00', 0x2) r2 = openat(0xffffffffffffff9c, &(0x7f00000001c0)='./debug/failslab/times\x00', 0x1, 0x0) write(r2, &(0x7f0000000200)='-1\x00', 0x3) r3 = openat(0xffffffffffffff9c, &(0x7f0000000240)='./debug/failslab/space\x00', 0x1, 0x0) write(r3, &(0x7f0000000280)='0\x00', 0x2) r4 = openat(0xffffffffffffff9c, &(0x7f00000002c0)='./debug/failslab/verbose\x00', 0x1, 0x0) write(r4, &(0x7f0000000300)='0\x00', 0x2) r5 = openat(0xffffffffffffff9c, &(0x7f0000000340)='./debug/failslab/ignore-gfp-wait\x00', 0x1, 0x0) write(r5, &(0x7f0000000380)='N\x00', 0x2) kernel console output (not intermixed with test programs): in_unlock_irqrestore+0x4a/0x70 [ 211.209358][ T8] ? __try_to_del_timer_sync+0x2e8/0x440 [ 211.209424][ T8] ? addrconf_cleanup+0x150/0x150 [ 211.209472][ T8] ? __kasan_check_write+0x18/0x20 [ 211.209516][ T8] ? mutex_unlock+0x90/0x240 [ 211.209586][ T8] ? __cfi_mutex_unlock+0x10/0x10 [ 211.209652][ T8] ? __cfi_device_cmp+0x10/0x10 [ 211.209707][ T8] ? masq_device_event+0xe0/0xe0 [ 211.209787][ T8] addrconf_notify+0x17a/0xeb0 [ 211.209863][ T8] ? ip6mr_device_event+0x1ed/0x230 [ 211.209909][ T8] ? __cfi_addrconf_notify+0x10/0x10 [ 211.209961][ T8] notifier_call_chain+0x106/0x2b0 [ 211.210008][ T8] raw_notifier_call_chain+0x31/0x40 [ 211.210059][ T8] dev_close_many+0x332/0x4f0 [ 211.210108][ T8] ? __cfi_dev_close_many+0x10/0x10 [ 211.210162][ T8] ? __kasan_check_read+0x15/0x20 [ 211.210207][ T8] unregister_netdevice_many_notify+0x4bd/0x1be0 [ 211.210280][ T8] ? __cfi_unregister_netdevice_many_notify+0x10/0x10 [ 211.210342][ T8] ? __kasan_check_read+0x15/0x20 [ 211.210391][ T8] ? __kasan_check_read+0x15/0x20 [ 211.210444][ T8] ? unregister_netdevice_queue+0x18a/0x350 [ 211.210507][ T8] default_device_exit_batch+0x845/0x8d0 [ 211.210578][ T8] ? mutex_lock+0x97/0x1d0 [ 211.210648][ T8] ? __cfi_mutex_lock+0x10/0x10 [ 211.210711][ T8] ? __cfi_default_device_exit_batch+0x10/0x10 [ 211.210787][ T8] ? rtnl_unlock+0x12/0x20 [ 211.210857][ T8] ? __cfi_default_device_exit_batch+0x10/0x10 [ 211.210928][ T8] cleanup_net+0x744/0xc90 [ 211.210973][ T8] ? __cfi_cleanup_net+0x10/0x10 [ 211.211009][ T8] ? __set_cpus_allowed_ptr+0x1d6/0x2c0 [ 211.211077][ T8] ? __cfi___set_cpus_allowed_ptr+0x10/0x10 [ 211.211138][ T8] ? kick_pool+0xad/0x540 [ 211.211215][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 211.211291][ T8] process_scheduled_works+0x7f7/0x1060 [ 211.211345][ T8] rescuer_thread+0xce5/0x1620 [ 211.211397][ T8] ? _raw_spin_lock_irqsave+0xc1/0x160 [ 211.211468][ T8] kthread+0x2c7/0x360 [ 211.211514][ T8] ? __cfi_rescuer_thread+0x10/0x10 [ 211.211568][ T8] ? __cfi_kthread+0x10/0x10 [ 211.211641][ T8] ret_from_fork+0x67/0xa0 [ 211.211711][ T8] ? __cfi_kthread+0x10/0x10 [ 211.211775][ T8] ret_from_fork_asm+0x1a/0x30 [ 211.211831][ T8] [ 211.211961][ T8] FAULT_INJECTION: forcing a failure. [ 211.211961][ T8] name failslab, interval 1, probability 100, space 0, times -1 [ 211.214809][ T13] CPU: 1 UID: 0 PID: 13 Comm: kworker/u8:1 Not tainted syzkaller #0 45964a5c932d45c81e53484b258bbb49855afb35 [ 211.214850][ T13] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 211.214891][ T13] Workqueue: writeback wb_workfn (flush-8:0) [ 211.214971][ T13] Call Trace: [ 211.214989][ T13] [ 211.215007][ T13] __dump_stack+0x21/0x30 [ 211.215079][ T13] dump_stack_lvl+0x140/0x1c0 [ 211.215141][ T13] ? __cfi_dump_stack_lvl+0x10/0x10 [ 211.215219][ T13] ? __sprint_symbol+0x20c/0x300 [ 211.215260][ T13] ? kallsyms_lookup_buildid+0x628/0x7a0 [ 211.215316][ T13] dump_stack+0x19/0x20 [ 211.215378][ T13] should_fail_ex+0x3c2/0x510 [ 211.215437][ T13] should_failslab+0xac/0x100 [ 211.215492][ T13] kmem_cache_alloc_noprof+0x42/0x410 [ 211.215545][ T13] ? widen_string+0x41/0x2e0 [ 211.215600][ T13] ? ext4_init_io_end+0x44/0x1b0 [ 211.215671][ T13] ext4_init_io_end+0x44/0x1b0 [ 211.215735][ T13] ext4_do_writepages+0xac8/0x39f0 [ 211.215811][ T13] ? ext4_normal_submit_inode_data_buffers+0x270/0x270 [ 211.215867][ T13] ? __kasan_check_write+0x18/0x20 [ 211.215917][ T13] ? desc_read+0x1e4/0x3e0 [ 211.215970][ T13] ? prb_first_seq+0x109/0x1d0 [ 211.216023][ T13] ? __cfi_prb_first_seq+0x10/0x10 [ 211.216074][ T13] ? __kasan_check_write+0x18/0x20 [ 211.216127][ T13] ? desc_read+0x1e4/0x3e0 [ 211.216189][ T13] ? __kasan_check_read+0x15/0x20 [ 211.216260][ T13] ? this_cpu_in_panic+0x56/0x90 [ 211.216332][ T13] ? _prb_read_valid+0x9b5/0xa50 [ 211.216410][ T13] ext4_writepages+0x28c/0x550 [ 211.216473][ T13] ? __cfi_ext4_writepages+0x10/0x10 [ 211.216554][ T13] ? __cfi__raw_spin_lock+0x10/0x10 [ 211.216598][ T13] ? __cfi_ext4_writepages+0x10/0x10 [ 211.216659][ T13] do_writepages+0x3d7/0x7f0 [ 211.216733][ T13] ? __cfi_do_writepages+0x10/0x10 [ 211.216805][ T13] ? __kasan_check_read+0x15/0x20 [ 211.216856][ T13] ? inode_io_list_move_locked+0x3b3/0x450 [ 211.216911][ T13] ? __kasan_check_write+0x18/0x20 [ 211.216956][ T13] ? _raw_spin_lock+0x92/0x120 [ 211.217009][ T13] __writeback_single_inode+0xc8/0xba0 [ 211.217069][ T13] ? locked_inode_to_wb_and_lock_list+0x1ff/0x2d0 [ 211.217129][ T13] writeback_sb_inodes+0x6a5/0xfb0 [ 211.217184][ T13] ? fprop_reflect_period_percpu+0x73/0x340 [ 211.217256][ T13] ? __kasan_check_write+0x18/0x20 [ 211.217306][ T13] ? queue_io+0x690/0x690 [ 211.217376][ T13] ? __kasan_check_read+0x15/0x20 [ 211.217421][ T13] ? queue_io+0x3d9/0x690 [ 211.217474][ T13] __writeback_inodes_wb+0x129/0x280 [ 211.217537][ T13] wb_writeback+0x3bb/0x850 [ 211.217597][ T13] ? inode_cgwb_move_to_attached+0x470/0x470 [ 211.217698][ T13] wb_workfn+0xab0/0xef0 [ 211.217778][ T13] ? ttwu_do_activate+0x620/0x620 [ 211.217853][ T13] ? __cfi_wb_workfn+0x10/0x10 [ 211.217897][ T13] ? try_to_wake_up+0x111a/0x1fd0 [ 211.217961][ T13] ? __kasan_check_write+0x18/0x20 [ 211.218007][ T13] ? pwq_dec_nr_in_flight+0x943/0xba0 [ 211.218058][ T13] ? wake_up_process+0x14/0x20 [ 211.218097][ T13] ? kick_pool+0x3b7/0x540 [ 211.218159][ T13] process_scheduled_works+0x7f7/0x1060 [ 211.218222][ T13] worker_thread+0xc99/0x13f0 [ 211.218282][ T13] kthread+0x2c7/0x360 [ 211.218328][ T13] ? __cfi_worker_thread+0x10/0x10 [ 211.218375][ T13] ? __cfi_kthread+0x10/0x10 [ 211.218433][ T13] ret_from_fork+0x67/0xa0 [ 211.218496][ T13] ? __cfi_kthread+0x10/0x10 [ 211.218551][ T13] ret_from_fork_asm+0x1a/0x30 [ 211.218604][ T13] [ 211.218667][ T13] FAULT_INJECTION: forcing a failure. [ 211.218667][ T13] name failslab, interval 1, probability 100, space 0, times -1 [ 211.222461][ T8] CPU: 0 UID: 0 PID: 8 Comm: kworker/R-netns Not tainted syzkaller #0 45964a5c932d45c81e53484b258bbb49855afb35 [ 211.222492][ T8] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 211.222508][ T8] Workqueue: netns cleanup_net [ 211.222587][ T8] Call Trace: [ 211.222615][ T8] [ 211.222643][ T8] __dump_stack+0x21/0x30 [ 211.222736][ T8] dump_stack_lvl+0x140/0x1c0 [ 211.222824][ T8] ? __cfi_dump_stack_lvl+0x10/0x10 [ 211.222883][ T8] dump_stack+0x19/0x20 [ 211.222947][ T8] should_fail_ex+0x3c2/0x510 [ 211.223001][ T8] should_failslab+0xac/0x100 [ 211.223057][ T8] kmem_cache_alloc_node_noprof+0x45/0x420 [ 211.223111][ T8] ? __alloc_skb+0x10c/0x360 [ 211.223174][ T8] ? __kasan_check_write+0x18/0x20 [ 211.223226][ T8] __alloc_skb+0x10c/0x360 [ 211.223298][ T8] __neigh_notify+0x83/0x140 [ 211.223362][ T8] neigh_cleanup_and_release+0x2c/0x1a0 [ 211.223424][ T8] neigh_flush_dev+0x79c/0x950 [ 211.223477][ T8] ? __kasan_check_write+0x18/0x20 [ 211.223530][ T8] __neigh_ifdown+0x45/0x470 [ 211.223586][ T8] neigh_ifdown+0x23/0x30 [ 211.223642][ T8] rt6_disable_ip+0x79e/0x810 [ 211.223706][ T8] ? __cfi__raw_spin_lock_irqsave+0x10/0x10 [ 211.223756][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 211.223812][ T8] ? __cfi_rt6_disable_ip+0x10/0x10 [ 211.223865][ T8] ? pneigh_queue_purge+0x570/0x5d0 [ 211.223928][ T8] ? __kasan_check_read+0x15/0x20 [ 211.223980][ T8] addrconf_ifdown+0x161/0x1970 [ 211.224043][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 211.224110][ T8] ? __try_to_del_timer_sync+0x2e8/0x440 [ 211.224171][ T8] ? addrconf_cleanup+0x150/0x150 [ 211.224218][ T8] ? __kasan_check_write+0x18/0x20 [ 211.224273][ T8] ? mutex_unlock+0x90/0x240 [ 211.224361][ T8] ? __cfi_mutex_unlock+0x10/0x10 [ 211.224414][ T8] ? __cfi_device_cmp+0x10/0x10 [ 211.224469][ T8] ? masq_device_event+0xe0/0xe0 [ 211.224544][ T8] addrconf_notify+0x17a/0xeb0 [ 211.224602][ T8] ? ip6mr_device_event+0x1ed/0x230 [ 211.224649][ T8] ? __cfi_addrconf_notify+0x10/0x10 [ 211.224704][ T8] notifier_call_chain+0x106/0x2b0 [ 211.224752][ T8] raw_notifier_call_chain+0x31/0x40 [ 211.224797][ T8] dev_close_many+0x332/0x4f0 [ 211.224844][ T8] ? __cfi_dev_close_many+0x10/0x10 [ 211.224895][ T8] ? __kasan_check_read+0x15/0x20 [ 211.224941][ T8] unregister_netdevice_many_notify+0x4bd/0x1be0 [ 211.225013][ T8] ? __cfi_unregister_netdevice_many_notify+0x10/0x10 [ 211.225075][ T8] ? __kasan_check_read+0x15/0x20 [ 211.225121][ T8] ? __kasan_check_read+0x15/0x20 [ 211.225167][ T8] ? unregister_netdevice_queue+0x18a/0x350 [ 211.225245][ T8] default_device_exit_batch+0x845/0x8d0 [ 211.225326][ T8] ? mutex_lock+0x97/0x1d0 [ 211.225409][ T8] ? __cfi_mutex_lock+0x10/0x10 [ 211.225496][ T8] ? __cfi_default_device_exit_batch+0x10/0x10 [ 211.225574][ T8] ? rtnl_unlock+0x12/0x20 [ 211.225640][ T8] ? __cfi_default_device_exit_batch+0x10/0x10 [ 211.225711][ T8] cleanup_net+0x744/0xc90 [ 211.225768][ T8] ? __cfi_cleanup_net+0x10/0x10 [ 211.225823][ T8] ? __set_cpus_allowed_ptr+0x1d6/0x2c0 [ 211.225878][ T8] ? __cfi___set_cpus_allowed_ptr+0x10/0x10 [ 211.225930][ T8] ? kick_pool+0xad/0x540 [ 211.225984][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 211.226038][ T8] process_scheduled_works+0x7f7/0x1060 [ 211.226102][ T8] rescuer_thread+0xce5/0x1620 [ 211.226158][ T8] ? _raw_spin_lock_irqsave+0xc1/0x160 [ 211.226229][ T8] kthread+0x2c7/0x360 [ 211.226285][ T8] ? __cfi_rescuer_thread+0x10/0x10 [ 211.226341][ T8] ? __cfi_kthread+0x10/0x10 [ 211.226390][ T8] ret_from_fork+0x67/0xa0 [ 211.226459][ T8] ? __cfi_kthread+0x10/0x10 [ 211.226517][ T8] ret_from_fork_asm+0x1a/0x30 [ 211.226564][ T8] [ 211.226637][ T8] FAULT_INJECTION: forcing a failure. [ 211.226637][ T8] name failslab, interval 1, probability 100, space 0, times -1 [ 211.230518][ T13] CPU: 1 UID: 0 PID: 13 Comm: kworker/u8:1 Not tainted syzkaller #0 45964a5c932d45c81e53484b258bbb49855afb35 [ 211.230546][ T13] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 211.230586][ T13] Workqueue: writeback wb_workfn (flush-8:0) [ 211.230669][ T13] Call Trace: [ 211.230688][ T13] [ 211.230713][ T13] __dump_stack+0x21/0x30 [ 211.230799][ T13] dump_stack_lvl+0x140/0x1c0 [ 211.230865][ T13] ? __cfi_dump_stack_lvl+0x10/0x10 [ 211.230931][ T13] ? __sprint_symbol+0x20c/0x300 [ 211.230991][ T13] ? kallsyms_lookup_buildid+0x628/0x7a0 [ 211.231045][ T13] dump_stack+0x19/0x20 [ 211.231106][ T13] should_fail_ex+0x3c2/0x510 [ 211.231165][ T13] should_failslab+0xac/0x100 [ 211.231227][ T13] kmem_cache_alloc_noprof+0x42/0x410 [ 211.231269][ T13] ? widen_string+0x41/0x2e0 [ 211.231320][ T13] ? ext4_init_io_end+0x44/0x1b0 [ 211.231393][ T13] ext4_init_io_end+0x44/0x1b0 [ 211.231468][ T13] ext4_do_writepages+0xac8/0x39f0 [ 211.231533][ T13] ? ext4_normal_submit_inode_data_buffers+0x270/0x270 [ 211.231604][ T13] ? __kasan_check_write+0x18/0x20 [ 211.231672][ T13] ? desc_read+0x1e4/0x3e0 [ 211.231736][ T13] ? prb_first_seq+0x109/0x1d0 [ 211.231808][ T13] ? __cfi_prb_first_seq+0x10/0x10 [ 211.231877][ T13] ? __kasan_check_write+0x18/0x20 [ 211.231931][ T13] ? desc_read+0x1e4/0x3e0 [ 211.232001][ T13] ? __kasan_check_read+0x15/0x20 [ 211.232083][ T13] ? this_cpu_in_panic+0x56/0x90 [ 211.232168][ T13] ? _prb_read_valid+0x9b5/0xa50 [ 211.232240][ T13] ext4_writepages+0x28c/0x550 [ 211.232300][ T13] ? __cfi_ext4_writepages+0x10/0x10 [ 211.232381][ T13] ? __cfi__raw_spin_lock+0x10/0x10 [ 211.232445][ T13] ? __cfi_ext4_writepages+0x10/0x10 [ 211.232524][ T13] do_writepages+0x3d7/0x7f0 [ 211.232610][ T13] ? __cfi_do_writepages+0x10/0x10 [ 211.232691][ T13] ? __kasan_check_read+0x15/0x20 [ 211.232759][ T13] ? inode_io_list_move_locked+0x3b3/0x450 [ 211.232848][ T13] ? __kasan_check_write+0x18/0x20 [ 211.232893][ T13] ? _raw_spin_lock+0x92/0x120 [ 211.232946][ T13] __writeback_single_inode+0xc8/0xba0 [ 211.233005][ T13] ? locked_inode_to_wb_and_lock_list+0x1ff/0x2d0 [ 211.233060][ T13] writeback_sb_inodes+0x6a5/0xfb0 [ 211.233114][ T13] ? fprop_reflect_period_percpu+0x73/0x340 [ 211.233181][ T13] ? __kasan_check_write+0x18/0x20 [ 211.233245][ T13] ? queue_io+0x690/0x690 [ 211.233313][ T13] ? __kasan_check_read+0x15/0x20 [ 211.233369][ T13] ? queue_io+0x3d9/0x690 [ 211.233424][ T13] __writeback_inodes_wb+0x129/0x280 [ 211.233491][ T13] wb_writeback+0x3bb/0x850 [ 211.233553][ T13] ? inode_cgwb_move_to_attached+0x470/0x470 [ 211.233642][ T13] wb_workfn+0xab0/0xef0 [ 211.233687][ T13] ? ttwu_do_activate+0x620/0x620 [ 211.233749][ T13] ? __cfi_wb_workfn+0x10/0x10 [ 211.233794][ T13] ? try_to_wake_up+0x111a/0x1fd0 [ 211.233856][ T13] ? __kasan_check_write+0x18/0x20 [ 211.233907][ T13] ? pwq_dec_nr_in_flight+0x943/0xba0 [ 211.233958][ T13] ? wake_up_process+0x14/0x20 [ 211.233996][ T13] ? kick_pool+0x3b7/0x540 [ 211.234055][ T13] process_scheduled_works+0x7f7/0x1060 [ 211.234117][ T13] worker_thread+0xc99/0x13f0 [ 211.234173][ T13] kthread+0x2c7/0x360 [ 211.234226][ T13] ? __cfi_worker_thread+0x10/0x10 [ 211.234273][ T13] ? __cfi_kthread+0x10/0x10 [ 211.234326][ T13] ret_from_fork+0x67/0xa0 [ 211.234385][ T13] ? __cfi_kthread+0x10/0x10 [ 211.234439][ T13] ret_from_fork_asm+0x1a/0x30 [ 211.234491][ T13] [ 211.235017][ T13] FAULT_INJECTION: forcing a failure. [ 211.235017][ T13] name failslab, interval 1, probability 100, space 0, times -1 [ 211.238267][ T8] CPU: 0 UID: 0 PID: 8 Comm: kworker/R-netns Not tainted syzkaller #0 45964a5c932d45c81e53484b258bbb49855afb35 [ 211.238294][ T8] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 211.238308][ T8] Workqueue: netns cleanup_net [ 211.238340][ T8] Call Trace: [ 211.238366][ T8] [ 211.238392][ T8] __dump_stack+0x21/0x30 [ 211.238491][ T8] dump_stack_lvl+0x140/0x1c0 [ 211.238561][ T8] ? __cfi_dump_stack_lvl+0x10/0x10 [ 211.238620][ T8] ? __kasan_check_write+0x18/0x20 [ 211.238668][ T8] ? _raw_spin_lock+0x92/0x120 [ 211.238722][ T8] dump_stack+0x19/0x20 [ 211.238786][ T8] should_fail_ex+0x3c2/0x510 [ 211.238854][ T8] should_failslab+0xac/0x100 [ 211.238916][ T8] kmem_cache_alloc_node_noprof+0x45/0x420 [ 211.238968][ T8] ? __alloc_skb+0x10c/0x360 [ 211.239026][ T8] __alloc_skb+0x10c/0x360 [ 211.239088][ T8] __neigh_notify+0x83/0x140 [ 211.239149][ T8] neigh_cleanup_and_release+0x2c/0x1a0 [ 211.239227][ T8] neigh_flush_dev+0x79c/0x950 [ 211.239290][ T8] ? __kasan_check_write+0x18/0x20 [ 211.239332][ T8] __neigh_ifdown+0x45/0x470 [ 211.239397][ T8] neigh_ifdown+0x23/0x30 [ 211.239453][ T8] rt6_disable_ip+0x79e/0x810 [ 211.239499][ T8] ? __cfi__raw_spin_lock_irqsave+0x10/0x10 [ 211.239596][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 211.239650][ T8] ? __cfi_rt6_disable_ip+0x10/0x10 [ 211.239697][ T8] ? pneigh_queue_purge+0x570/0x5d0 [ 211.239755][ T8] ? __kasan_check_read+0x15/0x20 [ 211.239805][ T8] addrconf_ifdown+0x161/0x1970 [ 211.239863][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 211.239924][ T8] ? __try_to_del_timer_sync+0x2e8/0x440 [ 211.239981][ T8] ? addrconf_cleanup+0x150/0x150 [ 211.240032][ T8] ? __kasan_check_write+0x18/0x20 [ 211.240077][ T8] ? mutex_unlock+0x90/0x240 [ 211.240150][ T8] ? __cfi_mutex_unlock+0x10/0x10 [ 211.240215][ T8] ? __cfi_device_cmp+0x10/0x10 [ 211.240277][ T8] ? masq_device_event+0xe0/0xe0 [ 211.240341][ T8] addrconf_notify+0x17a/0xeb0 [ 211.240397][ T8] ? ip6mr_device_event+0x1ed/0x230 [ 211.240441][ T8] ? __cfi_addrconf_notify+0x10/0x10 [ 211.240495][ T8] notifier_call_chain+0x106/0x2b0 [ 211.240547][ T8] raw_notifier_call_chain+0x31/0x40 [ 211.240593][ T8] dev_close_many+0x332/0x4f0 [ 211.240644][ T8] ? __cfi_dev_close_many+0x10/0x10 [ 211.240690][ T8] ? __kasan_check_read+0x15/0x20 [ 211.240742][ T8] unregister_netdevice_many_notify+0x4bd/0x1be0 [ 211.240808][ T8] ? __cfi_unregister_netdevice_many_notify+0x10/0x10 [ 211.240872][ T8] ? __kasan_check_read+0x15/0x20 [ 211.240919][ T8] ? __kasan_check_read+0x15/0x20 [ 211.240970][ T8] ? unregister_netdevice_queue+0x18a/0x350 [ 211.241044][ T8] default_device_exit_batch+0x845/0x8d0 [ 211.241119][ T8] ? mutex_lock+0x97/0x1d0 [ 211.241195][ T8] ? __cfi_mutex_lock+0x10/0x10 [ 211.241281][ T8] ? __cfi_default_device_exit_batch+0x10/0x10 [ 211.241359][ T8] ? rtnl_unlock+0x12/0x20 [ 211.241423][ T8] ? __cfi_default_device_exit_batch+0x10/0x10 [ 211.241507][ T8] cleanup_net+0x744/0xc90 [ 211.241564][ T8] ? __cfi_cleanup_net+0x10/0x10 [ 211.241646][ T8] ? __set_cpus_allowed_ptr+0x1d6/0x2c0 [ 211.241703][ T8] ? __cfi___set_cpus_allowed_ptr+0x10/0x10 [ 211.241759][ T8] ? kick_pool+0xad/0x540 [ 211.241823][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 211.241895][ T8] process_scheduled_works+0x7f7/0x1060 [ 211.241967][ T8] rescuer_thread+0xce5/0x1620 [ 211.242033][ T8] ? _raw_spin_lock_irqsave+0xc1/0x160 [ 211.242114][ T8] kthread+0x2c7/0x360 [ 211.242176][ T8] ? __cfi_rescuer_thread+0x10/0x10 [ 211.242240][ T8] ? __cfi_kthread+0x10/0x10 [ 211.242310][ T8] ret_from_fork+0x67/0xa0 [ 211.242393][ T8] ? __cfi_kthread+0x10/0x10 [ 211.242456][ T8] ret_from_fork_asm+0x1a/0x30 [ 211.242517][ T8] [ 211.242593][ T8] FAULT_INJECTION: forcing a failure. [ 211.242593][ T8] name failslab, interval 1, probability 100, space 0, times -1 [ 211.247078][ T13] CPU: 1 UID: 0 PID: 13 Comm: kworker/u8:1 Not tainted syzkaller #0 45964a5c932d45c81e53484b258bbb49855afb35 [ 211.247108][ T13] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 211.247121][ T13] Workqueue: wg-kex-wg1 wg_packet_handshake_send_worker [ 211.247149][ T13] Call Trace: [ 211.247171][ T13] [ 211.247205][ T13] __dump_stack+0x21/0x30 [ 211.247294][ T13] dump_stack_lvl+0x140/0x1c0 [ 211.247347][ T13] ? __cfi_dump_stack_lvl+0x10/0x10 [ 211.247405][ T13] ? calc_wheel_index+0x1b9/0x8f0 [ 211.247473][ T13] ? __kasan_check_write+0x18/0x20 [ 211.247518][ T13] ? timer_update_keys+0xd0/0xd0 [ 211.247583][ T13] dump_stack+0x19/0x20 [ 211.247645][ T13] should_fail_ex+0x3c2/0x510 [ 211.247698][ T13] should_failslab+0xac/0x100 [ 211.247767][ T13] kmem_cache_alloc_node_noprof+0x45/0x420 [ 211.247814][ T13] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 211.247873][ T13] ? __alloc_skb+0x10c/0x360 [ 211.247935][ T13] ? __mod_timer+0x881/0xd20 [ 211.247990][ T13] __alloc_skb+0x10c/0x360 [ 211.248058][ T13] wg_socket_send_buffer_to_peer+0x3b/0x170 [ 211.248122][ T13] ? ktime_get_coarse_with_offset+0x157/0x1a0 [ 211.248175][ T13] wg_packet_handshake_send_worker+0x204/0x2a0 [ 211.248245][ T13] ? __cfi_wg_packet_handshake_send_worker+0x10/0x10 [ 211.248316][ T13] ? wake_up_process+0x14/0x20 [ 211.248361][ T13] ? kick_pool+0x3b7/0x540 [ 211.248420][ T13] process_scheduled_works+0x7f7/0x1060 [ 211.248475][ T13] worker_thread+0xc99/0x13f0 [ 211.248527][ T13] kthread+0x2c7/0x360 [ 211.248588][ T13] ? __cfi_worker_thread+0x10/0x10 [ 211.248654][ T13] ? __cfi_kthread+0x10/0x10 [ 211.248731][ T13] ret_from_fork+0x67/0xa0 [ 211.248803][ T13] ? __cfi_kthread+0x10/0x10 [ 211.248856][ T13] ret_from_fork_asm+0x1a/0x30 [ 211.248908][ T13] [ 211.249426][ T13] FAULT_INJECTION: forcing a failure. [ 211.249426][ T13] name failslab, interval 1, probability 100, space 0, times -1 [ 211.254685][ T8] CPU: 0 UID: 0 PID: 8 Comm: kworker/R-netns Not tainted syzkaller #0 45964a5c932d45c81e53484b258bbb49855afb35 [ 211.254712][ T8] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 211.254745][ T8] Workqueue: netns cleanup_net [ 211.254827][ T8] Call Trace: [ 211.254844][ T8] [ 211.254857][ T8] __dump_stack+0x21/0x30 [ 211.254934][ T8] dump_stack_lvl+0x140/0x1c0 [ 211.254998][ T8] ? __cfi_dump_stack_lvl+0x10/0x10 [ 211.255062][ T8] ? __kasan_check_write+0x18/0x20 [ 211.255116][ T8] ? _raw_spin_lock+0x92/0x120 [ 211.255170][ T8] dump_stack+0x19/0x20 [ 211.255227][ T8] should_fail_ex+0x3c2/0x510 [ 211.255298][ T8] should_failslab+0xac/0x100 [ 211.255359][ T8] kmem_cache_alloc_node_noprof+0x45/0x420 [ 211.255412][ T8] ? __alloc_skb+0x10c/0x360 [ 211.255476][ T8] __alloc_skb+0x10c/0x360 [ 211.255538][ T8] __neigh_notify+0x83/0x140 [ 211.255601][ T8] neigh_cleanup_and_release+0x2c/0x1a0 [ 211.255666][ T8] neigh_flush_dev+0x79c/0x950 [ 211.255720][ T8] ? __kasan_check_write+0x18/0x20 [ 211.255770][ T8] __neigh_ifdown+0x45/0x470 [ 211.255825][ T8] neigh_ifdown+0x23/0x30 [ 211.255884][ T8] rt6_disable_ip+0x79e/0x810 [ 211.255931][ T8] ? __cfi__raw_spin_lock_irqsave+0x10/0x10 [ 211.255986][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 211.256040][ T8] ? __cfi_rt6_disable_ip+0x10/0x10 [ 211.256105][ T8] ? pneigh_queue_purge+0x570/0x5d0 [ 211.256155][ T8] ? __kasan_check_read+0x15/0x20 [ 211.256185][ T8] addrconf_ifdown+0x161/0x1970 [ 211.256225][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 211.256283][ T8] ? __try_to_del_timer_sync+0x2e8/0x440 [ 211.256356][ T8] ? addrconf_cleanup+0x150/0x150 [ 211.256400][ T8] ? __kasan_check_write+0x18/0x20 [ 211.256448][ T8] ? mutex_unlock+0x90/0x240 [ 211.256542][ T8] ? __cfi_mutex_unlock+0x10/0x10 [ 211.256612][ T8] ? __cfi_device_cmp+0x10/0x10 [ 211.256676][ T8] ? masq_device_event+0xe0/0xe0 [ 211.256743][ T8] addrconf_notify+0x17a/0xeb0 [ 211.256802][ T8] ? ip6mr_device_event+0x1ed/0x230 [ 211.256850][ T8] ? __cfi_addrconf_notify+0x10/0x10 [ 211.256912][ T8] notifier_call_chain+0x106/0x2b0 [ 211.256961][ T8] raw_notifier_call_chain+0x31/0x40 [ 211.257016][ T8] dev_close_many+0x332/0x4f0 [ 211.257065][ T8] ? __cfi_dev_close_many+0x10/0x10 [ 211.257123][ T8] ? __kasan_check_read+0x15/0x20 [ 211.257177][ T8] unregister_netdevice_many_notify+0x4bd/0x1be0 [ 211.257260][ T8] ? __cfi_unregister_netdevice_many_notify+0x10/0x10 [ 211.257328][ T8] ? __kasan_check_read+0x15/0x20 [ 211.257382][ T8] ? __kasan_check_read+0x15/0x20 [ 211.257437][ T8] ? unregister_netdevice_queue+0x18a/0x350 [ 211.257500][ T8] default_device_exit_batch+0x845/0x8d0 [ 211.257578][ T8] ? mutex_lock+0x97/0x1d0 [ 211.257662][ T8] ? __cfi_mutex_lock+0x10/0x10 [ 211.257729][ T8] ? __cfi_default_device_exit_batch+0x10/0x10 [ 211.257801][ T8] ? rtnl_unlock+0x12/0x20 [ 211.257873][ T8] ? __cfi_default_device_exit_batch+0x10/0x10 [ 211.257945][ T8] cleanup_net+0x744/0xc90 [ 211.258001][ T8] ? __cfi_cleanup_net+0x10/0x10 [ 211.258059][ T8] ? __set_cpus_allowed_ptr+0x1d6/0x2c0 [ 211.258108][ T8] ? __cfi___set_cpus_allowed_ptr+0x10/0x10 [ 211.258161][ T8] ? kick_pool+0xad/0x540 [ 211.258222][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 211.258308][ T8] process_scheduled_works+0x7f7/0x1060 [ 211.258377][ T8] rescuer_thread+0xce5/0x1620 [ 211.258432][ T8] ? _raw_spin_lock_irqsave+0xc1/0x160 [ 211.258504][ T8] kthread+0x2c7/0x360 [ 211.258557][ T8] ? __cfi_rescuer_thread+0x10/0x10 [ 211.258607][ T8] ? __cfi_kthread+0x10/0x10 [ 211.258659][ T8] ret_from_fork+0x67/0xa0 [ 211.258726][ T8] ? __cfi_kthread+0x10/0x10 [ 211.258763][ T8] ret_from_fork_asm+0x1a/0x30 [ 211.258816][ T8] [ 211.258906][ T8] FAULT_INJECTION: forcing a failure. [ 211.258906][ T8] name failslab, interval 1, probability 100, space 0, times -1 [ 211.262539][ T13] CPU: 1 UID: 0 PID: 13 Comm: kworker/u8:1 Not tainted syzkaller #0 45964a5c932d45c81e53484b258bbb49855afb35 [ 211.262570][ T13] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 211.262603][ T13] Workqueue: wg-kex-wg2 wg_packet_handshake_send_worker [ 211.262705][ T13] Call Trace: [ 211.262729][ T13] [ 211.262778][ T13] __dump_stack+0x21/0x30 [ 211.262864][ T13] dump_stack_lvl+0x140/0x1c0 [ 211.262916][ T13] ? __cfi_dump_stack_lvl+0x10/0x10 [ 211.262973][ T13] ? calc_wheel_index+0x1b9/0x8f0 [ 211.263036][ T13] ? __kasan_check_write+0x18/0x20 [ 211.263083][ T13] ? timer_update_keys+0xd0/0xd0 [ 211.263148][ T13] dump_stack+0x19/0x20 [ 211.263201][ T13] should_fail_ex+0x3c2/0x510 [ 211.263279][ T13] should_failslab+0xac/0x100 [ 211.263341][ T13] kmem_cache_alloc_node_noprof+0x45/0x420 [ 211.263396][ T13] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 211.263452][ T13] ? __alloc_skb+0x10c/0x360 [ 211.263514][ T13] ? __mod_timer+0x881/0xd20 [ 211.263574][ T13] __alloc_skb+0x10c/0x360 [ 211.263637][ T13] wg_socket_send_buffer_to_peer+0x3b/0x170 [ 211.263700][ T13] ? ktime_get_coarse_with_offset+0x157/0x1a0 [ 211.263767][ T13] wg_packet_handshake_send_worker+0x204/0x2a0 [ 211.263828][ T13] ? __cfi_wg_packet_handshake_send_worker+0x10/0x10 [ 211.263900][ T13] ? wake_up_process+0x14/0x20 [ 211.263945][ T13] ? kick_pool+0x3b7/0x540 [ 211.264003][ T13] process_scheduled_works+0x7f7/0x1060 [ 211.264076][ T13] worker_thread+0xc99/0x13f0 [ 211.264158][ T13] kthread+0x2c7/0x360 [ 211.264213][ T13] ? __cfi_worker_thread+0x10/0x10 [ 211.264259][ T13] ? __cfi_kthread+0x10/0x10 [ 211.264321][ T13] ret_from_fork+0x67/0xa0 [ 211.264402][ T13] ? __cfi_kthread+0x10/0x10 [ 211.264456][ T13] ret_from_fork_asm+0x1a/0x30 [ 211.264510][ T13] [ 211.264876][ T13] FAULT_INJECTION: forcing a failure. [ 211.264876][ T13] name failslab, interval 1, probability 100, space 0, times -1 [ 211.270474][ T8] CPU: 0 UID: 0 PID: 8 Comm: kworker/R-netns Not tainted syzkaller #0 45964a5c932d45c81e53484b258bbb49855afb35 [ 211.270500][ T8] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 211.270514][ T8] Workqueue: netns cleanup_net [ 211.270581][ T8] Call Trace: [ 211.270604][ T8] [ 211.270628][ T8] __dump_stack+0x21/0x30 [ 211.270693][ T8] dump_stack_lvl+0x140/0x1c0 [ 211.270766][ T8] ? __cfi_dump_stack_lvl+0x10/0x10 [ 211.270824][ T8] ? __kasan_check_write+0x18/0x20 [ 211.270872][ T8] ? _raw_spin_lock+0x92/0x120 [ 211.270925][ T8] dump_stack+0x19/0x20 [ 211.270986][ T8] should_fail_ex+0x3c2/0x510 [ 211.271035][ T8] should_failslab+0xac/0x100 [ 211.271072][ T8] kmem_cache_alloc_node_noprof+0x45/0x420 [ 211.271120][ T8] ? __alloc_skb+0x10c/0x360 [ 211.271189][ T8] __alloc_skb+0x10c/0x360 [ 211.271253][ T8] __neigh_notify+0x83/0x140 [ 211.271318][ T8] neigh_cleanup_and_release+0x2c/0x1a0 [ 211.271387][ T8] neigh_flush_dev+0x79c/0x950 [ 211.271442][ T8] ? __kasan_check_write+0x18/0x20 [ 211.271494][ T8] __neigh_ifdown+0x45/0x470 [ 211.271549][ T8] neigh_ifdown+0x23/0x30 [ 211.271617][ T8] rt6_disable_ip+0x79e/0x810 [ 211.271688][ T8] ? __cfi__raw_spin_lock_irqsave+0x10/0x10 [ 211.271746][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 211.271813][ T8] ? __cfi_rt6_disable_ip+0x10/0x10 [ 211.271875][ T8] ? pneigh_queue_purge+0x570/0x5d0 [ 211.271949][ T8] ? __kasan_check_read+0x15/0x20 [ 211.272034][ T8] addrconf_ifdown+0x161/0x1970 [ 211.272120][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 211.272186][ T8] ? __try_to_del_timer_sync+0x2e8/0x440 [ 211.272276][ T8] ? addrconf_cleanup+0x150/0x150 [ 211.272331][ T8] ? __kasan_check_write+0x18/0x20 [ 211.272391][ T8] ? mutex_unlock+0x90/0x240 [ 211.272464][ T8] ? __cfi_mutex_unlock+0x10/0x10 [ 211.272545][ T8] ? __cfi_device_cmp+0x10/0x10 [ 211.272611][ T8] ? masq_device_event+0xe0/0xe0 [ 211.272685][ T8] addrconf_notify+0x17a/0xeb0 [ 211.272794][ T8] ? ip6mr_device_event+0x1ed/0x230 [ 211.272868][ T8] ? __cfi_addrconf_notify+0x10/0x10 [ 211.272928][ T8] notifier_call_chain+0x106/0x2b0 [ 211.272978][ T8] raw_notifier_call_chain+0x31/0x40 [ 211.273025][ T8] dev_close_many+0x332/0x4f0 [ 211.273077][ T8] ? __cfi_dev_close_many+0x10/0x10 [ 211.273124][ T8] ? __kasan_check_read+0x15/0x20 [ 211.273169][ T8] unregister_netdevice_many_notify+0x4bd/0x1be0 [ 211.273241][ T8] ? __cfi_unregister_netdevice_many_notify+0x10/0x10 [ 211.273332][ T8] ? __kasan_check_read+0x15/0x20 [ 211.273395][ T8] ? __kasan_check_read+0x15/0x20 [ 211.273458][ T8] ? unregister_netdevice_queue+0x18a/0x350 [ 211.273528][ T8] default_device_exit_batch+0x845/0x8d0 [ 211.273600][ T8] ? mutex_lock+0x97/0x1d0 [ 211.273663][ T8] ? __cfi_mutex_lock+0x10/0x10 [ 211.273726][ T8] ? __cfi_default_device_exit_batch+0x10/0x10 [ 211.273807][ T8] ? rtnl_unlock+0x12/0x20 [ 211.273872][ T8] ? __cfi_default_device_exit_batch+0x10/0x10 [ 211.273941][ T8] cleanup_net+0x744/0xc90 [ 211.273996][ T8] ? __cfi_cleanup_net+0x10/0x10 [ 211.274057][ T8] ? __set_cpus_allowed_ptr+0x1d6/0x2c0 [ 211.274116][ T8] ? __cfi___set_cpus_allowed_ptr+0x10/0x10 [ 211.274184][ T8] ? kick_pool+0xad/0x540 [ 211.274239][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 211.274317][ T8] process_scheduled_works+0x7f7/0x1060 [ 211.274372][ T8] rescuer_thread+0xce5/0x1620 [ 211.274428][ T8] ? _raw_spin_lock_irqsave+0xc1/0x160 [ 211.274492][ T8] kthread+0x2c7/0x360 [ 211.274544][ T8] ? __cfi_rescuer_thread+0x10/0x10 [ 211.274606][ T8] ? __cfi_kthread+0x10/0x10 [ 211.274662][ T8] ret_from_fork+0x67/0xa0 [ 211.274726][ T8] ? __cfi_kthread+0x10/0x10 [ 211.274802][ T8] ret_from_fork_asm+0x1a/0x30 [ 211.274872][ T8] [ 211.275024][ T8] FAULT_INJECTION: forcing a failure. [ 211.275024][ T8] name failslab, interval 1, probability 100, space 0, times -1 [ 211.278248][ T13] CPU: 1 UID: 0 PID: 13 Comm: kworker/u8:1 Not tainted syzkaller #0 45964a5c932d45c81e53484b258bbb49855afb35 [ 211.278275][ T13] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 211.278289][ T13] Workqueue: wg-kex-wg0 wg_packet_handshake_send_worker [ 211.278344][ T13] Call Trace: [ 211.278362][ T13] [ 211.278391][ T13] __dump_stack+0x21/0x30 [ 211.278473][ T13] dump_stack_lvl+0x140/0x1c0 [ 211.278536][ T13] ? __cfi_dump_stack_lvl+0x10/0x10 [ 211.278597][ T13] ? calc_wheel_index+0x13a/0x8f0 [ 211.278659][ T13] ? __kasan_check_write+0x18/0x20 [ 211.278712][ T13] ? timer_update_keys+0xd0/0xd0 [ 211.278784][ T13] dump_stack+0x19/0x20 [ 211.278845][ T13] should_fail_ex+0x3c2/0x510 [ 211.278900][ T13] should_failslab+0xac/0x100 [ 211.278955][ T13] kmem_cache_alloc_node_noprof+0x45/0x420 [ 211.279008][ T13] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 211.279071][ T13] ? __alloc_skb+0x10c/0x360 [ 211.279131][ T13] ? __mod_timer+0x881/0xd20 [ 211.279186][ T13] __alloc_skb+0x10c/0x360 [ 211.279250][ T13] wg_socket_send_buffer_to_peer+0x3b/0x170 [ 211.279307][ T13] ? ktime_get_coarse_with_offset+0x157/0x1a0 [ 211.279374][ T13] wg_packet_handshake_send_worker+0x204/0x2a0 [ 211.279437][ T13] ? __cfi_wg_packet_handshake_send_worker+0x10/0x10 [ 211.279507][ T13] ? wake_up_process+0x14/0x20 [ 211.279550][ T13] ? kick_pool+0x3b7/0x540 [ 211.279594][ T13] process_scheduled_works+0x7f7/0x1060 [ 211.279631][ T13] worker_thread+0xc99/0x13f0 [ 211.279700][ T13] kthread+0x2c7/0x360 [ 211.279757][ T13] ? __cfi_worker_thread+0x10/0x10 [ 211.279825][ T13] ? __cfi_kthread+0x10/0x10 [ 211.279890][ T13] ret_from_fork+0x67/0xa0 [ 211.279961][ T13] ? __cfi_kthread+0x10/0x10 [ 211.280015][ T13] ret_from_fork_asm+0x1a/0x30 [ 211.280066][ T13] [ 211.280201][ T286] FAULT_INJECTION: forcing a failure. [ 211.280201][ T286] name failslab, interval 1, probability 100, space 0, times -1 [ 211.286012][ T8] CPU: 0 UID: 0 PID: 8 Comm: kworker/R-netns Not tainted syzkaller #0 45964a5c932d45c81e53484b258bbb49855afb35 [ 211.286041][ T8] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 211.286075][ T8] Workqueue: netns cleanup_net [ 211.286169][ T8] Call Trace: [ 211.286189][ T8] [ 211.286215][ T8] __dump_stack+0x21/0x30 [ 211.286295][ T8] dump_stack_lvl+0x140/0x1c0 [ 211.286368][ T8] ? __cfi_dump_stack_lvl+0x10/0x10 [ 211.286436][ T8] ? __kasan_check_read+0x15/0x20 [ 211.286499][ T8] dump_stack+0x19/0x20 [ 211.286593][ T8] should_fail_ex+0x3c2/0x510 [ 211.286662][ T8] should_failslab+0xac/0x100 [ 211.286732][ T8] kmem_cache_alloc_node_noprof+0x45/0x420 [ 211.286788][ T8] ? __cfi__raw_spin_lock_irqsave+0x10/0x10 [ 211.286850][ T8] ? __alloc_skb+0x10c/0x360 [ 211.286921][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 211.286992][ T8] __alloc_skb+0x10c/0x360 [ 211.287081][ T8] __ipv6_ifa_notify+0x205/0xee0 [ 211.287142][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 211.287201][ T8] ? snmp6_fill_stats+0x9b0/0x9b0 [ 211.287265][ T8] ? timer_delete+0x101/0x3e0 [ 211.287332][ T8] ? __kasan_check_write+0x18/0x20 [ 211.287389][ T8] ? work_grab_pending+0x301/0x830 [ 211.287466][ T8] ? neigh_ifdown+0x23/0x30 [ 211.287557][ T8] ? rt6_disable_ip+0x79e/0x810 [ 211.287625][ T8] ? mod_delayed_work_on+0x140/0x140 [ 211.287709][ T8] ? __kasan_check_write+0x18/0x20 [ 211.287763][ T8] ? _raw_spin_lock_bh+0x96/0x130 [ 211.287823][ T8] ? __cfi__raw_spin_lock_bh+0x10/0x10 [ 211.287894][ T8] ? __cancel_work+0x175/0x1f0 [ 211.287961][ T8] addrconf_ifdown+0xe01/0x1970 [ 211.288064][ T8] ? addrconf_cleanup+0x150/0x150 [ 211.288121][ T8] ? __kasan_check_write+0x18/0x20 [ 211.288171][ T8] ? mutex_unlock+0x90/0x240 [ 211.288258][ T8] ? __cfi_mutex_unlock+0x10/0x10 [ 211.288340][ T8] ? __cfi_device_cmp+0x10/0x10 [ 211.288429][ T8] ? masq_device_event+0xe0/0xe0 [ 211.288529][ T8] addrconf_notify+0x17a/0xeb0 [ 211.288593][ T8] ? ip6mr_device_event+0x1ed/0x230 [ 211.288653][ T8] ? __cfi_addrconf_notify+0x10/0x10 [ 211.288717][ T8] notifier_call_chain+0x106/0x2b0 [ 211.288772][ T8] raw_notifier_call_chain+0x31/0x40 [ 211.288828][ T8] dev_close_many+0x332/0x4f0 [ 211.288898][ T8] ? __cfi_dev_close_many+0x10/0x10 [ 211.288982][ T8] ? __kasan_check_read+0x15/0x20 [ 211.289049][ T8] unregister_netdevice_many_notify+0x4bd/0x1be0 [ 211.289152][ T8] ? __cfi_unregister_netdevice_many_notify+0x10/0x10 [ 211.289227][ T8] ? __kasan_check_read+0x15/0x20 [ 211.289296][ T8] ? __kasan_check_read+0x15/0x20 [ 211.289357][ T8] ? unregister_netdevice_queue+0x18a/0x350 [ 211.289438][ T8] default_device_exit_batch+0x845/0x8d0 [ 211.289528][ T8] ? mutex_lock+0x97/0x1d0 [ 211.289604][ T8] ? __cfi_mutex_lock+0x10/0x10 [ 211.289689][ T8] ? __cfi_default_device_exit_batch+0x10/0x10 [ 211.289791][ T8] ? rtnl_unlock+0x12/0x20 [ 211.289877][ T8] ? __cfi_default_device_exit_batch+0x10/0x10 [ 211.289968][ T8] cleanup_net+0x744/0xc90 [ 211.290033][ T8] ? __cfi_cleanup_net+0x10/0x10 [ 211.290105][ T8] ? __set_cpus_allowed_ptr+0x1d6/0x2c0 [ 211.290176][ T8] ? __cfi___set_cpus_allowed_ptr+0x10/0x10 [ 211.290239][ T8] ? kick_pool+0xad/0x540 [ 211.290333][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 211.290424][ T8] process_scheduled_works+0x7f7/0x1060 [ 211.290496][ T8] rescuer_thread+0xce5/0x1620 [ 211.290561][ T8] ? _raw_spin_lock_irqsave+0xc1/0x160 [ 211.290642][ T8] kthread+0x2c7/0x360 [ 211.290705][ T8] ? __cfi_rescuer_thread+0x10/0x10 [ 211.290762][ T8] ? __cfi_kthread+0x10/0x10 [ 211.290840][ T8] ret_from_fork+0x67/0xa0 [ 211.290904][ T8] ? __cfi_kthread+0x10/0x10 [ 211.290958][ T8] ret_from_fork_asm+0x1a/0x30 [ 211.291011][ T8] [ 211.291100][ T8] FAULT_INJECTION: forcing a failure. [ 211.291100][ T8] name failslab, interval 1, probability 100, space 0, times -1 [ 211.294213][ T286] CPU: 1 UID: 0 PID: 286 Comm: syz-executor Not tainted syzkaller #0 45964a5c932d45c81e53484b258bbb49855afb35 [ 211.294241][ T286] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 211.294263][ T286] Call Trace: [ 211.294293][ T286] [ 211.294323][ T286] __dump_stack+0x21/0x30 [ 211.294411][ T286] dump_stack_lvl+0x140/0x1c0 [ 211.294484][ T286] ? __cfi_dump_stack_lvl+0x10/0x10 [ 211.294548][ T286] ? dequeue_entity+0x88a/0x13b0 [ 211.294626][ T286] dump_stack+0x19/0x20 [ 211.294688][ T286] should_fail_ex+0x3c2/0x510 [ 211.294751][ T286] should_failslab+0xac/0x100 [ 211.294810][ T286] kmem_cache_alloc_node_noprof+0x45/0x420 [ 211.294856][ T286] ? dequeue_entities+0x1d2/0x1370 [ 211.294925][ T286] ? __alloc_skb+0x10c/0x360 [ 211.294986][ T286] __alloc_skb+0x10c/0x360 [ 211.295068][ T286] ? tcp_current_mss+0x539/0x8b0 [ 211.295118][ T286] tcp_stream_alloc_skb+0x43/0x370 [ 211.295166][ T286] tcp_sendmsg_locked+0xcbc/0x4ac0 [ 211.295221][ T286] ? avc_has_perm_noaudit+0x289/0x360 [ 211.295287][ T286] ? __kasan_check_write+0x18/0x20 [ 211.295342][ T286] ? __cfi__raw_spin_lock_bh+0x10/0x10 [ 211.295404][ T286] ? __kasan_check_write+0x18/0x20 [ 211.295462][ T286] ? __cfi_tcp_sendmsg_locked+0x10/0x10 [ 211.295512][ T286] ? avc_has_perm+0x155/0x240 [ 211.295584][ T286] ? hrtimer_reprogram+0x336/0x3d0 [ 211.295648][ T286] ? __cfi_tcp_sendmsg+0x10/0x10 [ 211.295693][ T286] tcp_sendmsg+0x3e/0xd0 [ 211.295762][ T286] ? __cfi_tcp_sendmsg+0x10/0x10 [ 211.295826][ T286] inet_sendmsg+0xb7/0x120 [ 211.295885][ T286] ? __cfi_inet_sendmsg+0x10/0x10 [ 211.295938][ T286] sock_write_iter+0x3bf/0x490 [ 211.295992][ T286] ? __cfi_sock_write_iter+0x10/0x10 [ 211.296053][ T286] ? usleep_range_state+0x150/0x150 [ 211.296119][ T286] vfs_write+0x762/0xfd0 [ 211.296172][ T286] ? __cfi_vfs_write+0x10/0x10 [ 211.296225][ T286] ? _copy_from_user+0x87/0xa0 [ 211.296290][ T286] ? __kasan_check_read+0x15/0x20 [ 211.296370][ T286] ksys_write+0x145/0x260 [ 211.296420][ T286] ? xfd_validate_state+0x68/0x140 [ 211.296507][ T286] ? __cfi_ksys_write+0x10/0x10 [ 211.296588][ T286] ? __kasan_check_write+0x18/0x20 [ 211.296633][ T286] ? fpregs_restore_userregs+0x11c/0x260 [ 211.296705][ T286] __x64_sys_write+0x7f/0x90 [ 211.296774][ T286] x64_sys_call+0x271c/0x2ee0 [ 211.296825][ T286] do_syscall_64+0x57/0xf0 [ 211.296902][ T286] ? clear_bhb_loop+0x50/0xa0 [ 211.296968][ T286] entry_SYSCALL_64_after_hwframe+0x76/0x7e [ 211.297033][ T286] RIP: 0033:0x7f8f10159017 [ 211.297080][ T286] Code: 48 89 fa 4c 89 df e8 a8 56 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff [ 211.297151][ T286] RSP: 002b:00007ffd93487580 EFLAGS: 00000202 ORIG_RAX: 0000000000000001 [ 211.297224][ T286] RAX: ffffffffffffffda RBX: 000055555ad48500 RCX: 00007f8f10159017 [ 211.297265][ T286] RDX: 0000000000000140 RSI: 00007f8f0d1ffec0 RDI: 0000000000000003 [ 211.297301][ T286] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 211.297331][ T286] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000140 [ 211.297367][ T286] R13: 000055555ad600a0 R14: 00007ffd93487b20 R15: 00007f8f0d1ffec0 [ 211.297412][ T286] [ 211.297619][ T37] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 211.302150][ T8] CPU: 0 UID: 0 PID: 8 Comm: kworker/R-netns Not tainted syzkaller #0 45964a5c932d45c81e53484b258bbb49855afb35 [ 211.302182][ T8] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 211.302198][ T8] Workqueue: netns cleanup_net [ 211.302277][ T8] Call Trace: [ 211.302312][ T8] [ 211.302333][ T8] __dump_stack+0x21/0x30 [ 211.302429][ T8] dump_stack_lvl+0x140/0x1c0 [ 211.302511][ T8] ? __cfi_dump_stack_lvl+0x10/0x10 [ 211.302587][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 211.302658][ T8] ? kvfree_call_rcu+0x40e/0x730 [ 211.302725][ T8] dump_stack+0x19/0x20 [ 211.302799][ T8] should_fail_ex+0x3c2/0x510 [ 211.302866][ T8] should_failslab+0xac/0x100 [ 211.302926][ T8] __kmalloc_cache_noprof+0x41/0x470 [ 211.302978][ T8] ? __dev_set_rx_mode+0x74/0x280 [ 211.303037][ T8] ? igmp6_group_dropped+0x3b7/0xc10 [ 211.303084][ T8] ? _raw_spin_unlock_bh+0x54/0x60 [ 211.303127][ T8] igmp6_group_dropped+0x3b7/0xc10 [ 211.303181][ T8] ? __ipv6_dev_mc_inc+0xa30/0xa30 [ 211.303228][ T8] ? mutex_lock+0x97/0x1d0 [ 211.303299][ T8] ? __kasan_check_write+0x18/0x20 [ 211.303352][ T8] ? __kasan_check_read+0x15/0x20 [ 211.303399][ T8] __ipv6_dev_mc_dec+0x29f/0x4c0 [ 211.303444][ T8] __ipv6_ifa_notify+0x7b1/0xee0 [ 211.303497][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 211.303557][ T8] ? snmp6_fill_stats+0x9b0/0x9b0 [ 211.303610][ T8] ? __kasan_check_write+0x18/0x20 [ 211.303663][ T8] ? work_grab_pending+0x301/0x830 [ 211.303763][ T8] ? neigh_ifdown+0x23/0x30 [ 211.303816][ T8] ? rt6_disable_ip+0x79e/0x810 [ 211.303872][ T8] ? mod_delayed_work_on+0x140/0x140 [ 211.303939][ T8] ? __kasan_check_write+0x18/0x20 [ 211.303993][ T8] ? _raw_spin_lock_bh+0x96/0x130 [ 211.304043][ T8] ? __cfi__raw_spin_lock_bh+0x10/0x10 [ 211.304109][ T8] ? __cancel_work+0x175/0x1f0 [ 211.304176][ T8] addrconf_ifdown+0xe01/0x1970 [ 211.304234][ T8] ? addrconf_cleanup+0x150/0x150 [ 211.304290][ T8] ? __kasan_check_write+0x18/0x20 [ 211.304345][ T8] ? mutex_unlock+0x90/0x240 [ 211.304439][ T8] ? __cfi_mutex_unlock+0x10/0x10 [ 211.304505][ T8] ? __cfi_device_cmp+0x10/0x10 [ 211.304578][ T8] ? masq_device_event+0xe0/0xe0 [ 211.304641][ T8] addrconf_notify+0x17a/0xeb0 [ 211.304696][ T8] ? ip6mr_device_event+0x1ed/0x230 [ 211.304742][ T8] ? __cfi_addrconf_notify+0x10/0x10 [ 211.304792][ T8] notifier_call_chain+0x106/0x2b0 [ 211.304842][ T8] raw_notifier_call_chain+0x31/0x40 [ 211.304893][ T8] dev_close_many+0x332/0x4f0 [ 211.304946][ T8] ? __cfi_dev_close_many+0x10/0x10 [ 211.304993][ T8] ? __kasan_check_read+0x15/0x20 [ 211.305041][ T8] unregister_netdevice_many_notify+0x4bd/0x1be0 [ 211.305142][ T8] ? __cfi_unregister_netdevice_many_notify+0x10/0x10 [ 211.305209][ T8] ? __kasan_check_read+0x15/0x20 [ 211.305270][ T8] ? __kasan_check_read+0x15/0x20 [ 211.305323][ T8] ? unregister_netdevice_queue+0x18a/0x350 [ 211.305396][ T8] default_device_exit_batch+0x845/0x8d0 [ 211.305469][ T8] ? mutex_lock+0x97/0x1d0 [ 211.305537][ T8] ? __cfi_mutex_lock+0x10/0x10 [ 211.305589][ T8] ? __cfi_default_device_exit_batch+0x10/0x10 [ 211.305667][ T8] ? rtnl_unlock+0x12/0x20 [ 211.305738][ T8] ? __cfi_default_device_exit_batch+0x10/0x10 [ 211.305814][ T8] cleanup_net+0x744/0xc90 [ 211.305869][ T8] ? __cfi_cleanup_net+0x10/0x10 [ 211.305930][ T8] ? __set_cpus_allowed_ptr+0x1d6/0x2c0 [ 211.305965][ T8] ? __cfi___set_cpus_allowed_ptr+0x10/0x10 [ 211.306019][ T8] ? kick_pool+0xad/0x540 [ 211.306085][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 211.306142][ T8] process_scheduled_works+0x7f7/0x1060 [ 211.306206][ T8] rescuer_thread+0xce5/0x1620 [ 211.306269][ T8] ? _raw_spin_lock_irqsave+0xc1/0x160 [ 211.306334][ T8] kthread+0x2c7/0x360 [ 211.306389][ T8] ? __cfi_rescuer_thread+0x10/0x10 [ 211.306452][ T8] ? __cfi_kthread+0x10/0x10 [ 211.306530][ T8] ret_from_fork+0x67/0xa0 [ 211.306616][ T8] ? __cfi_kthread+0x10/0x10 [ 211.306666][ T8] ret_from_fork_asm+0x1a/0x30 [ 211.306720][ T8] [ 211.306820][ T8] FAULT_INJECTION: forcing a failure. [ 211.306820][ T8] name failslab, interval 1, probability 100, space 0, times -1 [ 211.309946][ T37] task:kworker/u8:2 state:D stack:0 pid:46 tgid:46 ppid:2 flags:0x00004000 [ 211.309980][ T37] Workqueue: ipv6_addrconf addrconf_dad_work [ 211.317964][ T8] CPU: 0 UID: 0 PID: 8 Comm: kworker/R-netns Not tainted syzkaller #0 45964a5c932d45c81e53484b258bbb49855afb35 [ 211.318011][ T8] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 211.318056][ T8] Workqueue: netns cleanup_net [ 211.318112][ T8] Call Trace: [ 211.318134][ T8] [ 211.318140][ T8] __dump_stack+0x21/0x30 [ 211.318201][ T8] dump_stack_lvl+0x140/0x1c0 [ 211.318287][ T8] ? __cfi_dump_stack_lvl+0x10/0x10 [ 211.318345][ T8] ? stack_trace_save+0xaa/0x100 [ 211.318407][ T8] ? stack_depot_save_flags+0x38/0x800 [ 211.318462][ T8] dump_stack+0x19/0x20 [ 211.318525][ T8] should_fail_ex+0x3c2/0x510 [ 211.318580][ T8] should_failslab+0xac/0x100 [ 211.318642][ T8] kmem_cache_alloc_node_noprof+0x45/0x420 [ 211.318694][ T8] ? kthread+0x2c7/0x360 [ 211.318751][ T8] ? ret_from_fork+0x67/0xa0 [ 211.318821][ T8] ? __alloc_skb+0x10c/0x360 [ 211.318883][ T8] __alloc_skb+0x10c/0x360 [ 211.318953][ T8] __ipv6_ifa_notify+0x205/0xee0 [ 211.319012][ T8] ? snmp6_fill_stats+0x9b0/0x9b0 [ 211.319058][ T8] ? _raw_spin_lock+0x92/0x120 [ 211.319113][ T8] ? timer_delete+0x101/0x3e0 [ 211.319169][ T8] ? __cfi__raw_spin_lock+0x10/0x10 [ 211.319211][ T8] ? __kasan_check_write+0x18/0x20 [ 211.319260][ T8] ? work_grab_pending+0x301/0x830 [ 211.319321][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 211.319375][ T8] ? kvfree_call_rcu+0x40e/0x730 [ 211.319436][ T8] ? mod_delayed_work_on+0x140/0x140 [ 211.319522][ T8] ? __kasan_check_write+0x18/0x20 [ 211.319579][ T8] ? _raw_spin_lock_bh+0x96/0x130 [ 211.319632][ T8] ? __cfi__raw_spin_lock_bh+0x10/0x10 [ 211.319689][ T8] ? __cancel_work+0x175/0x1f0 [ 211.319746][ T8] addrconf_ifdown+0xe01/0x1970 [ 211.319800][ T8] ? addrconf_cleanup+0x150/0x150 [ 211.319840][ T8] ? __kasan_check_write+0x18/0x20 [ 211.319885][ T8] ? mutex_unlock+0x90/0x240 [ 211.319947][ T8] ? __cfi_mutex_unlock+0x10/0x10 [ 211.320013][ T8] ? __cfi_device_cmp+0x10/0x10 [ 211.320069][ T8] ? masq_device_event+0xe0/0xe0 [ 211.320133][ T8] addrconf_notify+0x17a/0xeb0 [ 211.320185][ T8] ? ip6mr_device_event+0x1ed/0x230 [ 211.320230][ T8] ? __cfi_addrconf_notify+0x10/0x10 [ 211.320289][ T8] notifier_call_chain+0x106/0x2b0 [ 211.320346][ T8] raw_notifier_call_chain+0x31/0x40 [ 211.320392][ T8] dev_close_many+0x332/0x4f0 [ 211.320442][ T8] ? __cfi_dev_close_many+0x10/0x10 [ 211.320488][ T8] ? __kasan_check_read+0x15/0x20 [ 211.320532][ T8] unregister_netdevice_many_notify+0x4bd/0x1be0 [ 211.320603][ T8] ? __cfi_unregister_netdevice_many_notify+0x10/0x10 [ 211.320674][ T8] ? __kasan_check_read+0x15/0x20 [ 211.320726][ T8] ? __kasan_check_read+0x15/0x20 [ 211.320778][ T8] ? unregister_netdevice_queue+0x18a/0x350 [ 211.320861][ T8] default_device_exit_batch+0x845/0x8d0 [ 211.320954][ T8] ? mutex_lock+0x97/0x1d0 [ 211.321016][ T8] ? __cfi_mutex_lock+0x10/0x10 [ 211.321079][ T8] ? __cfi_default_device_exit_batch+0x10/0x10 [ 211.321155][ T8] ? rtnl_unlock+0x12/0x20 [ 211.321208][ T8] ? __cfi_default_device_exit_batch+0x10/0x10 [ 211.321287][ T8] cleanup_net+0x744/0xc90 [ 211.321348][ T8] ? __cfi_cleanup_net+0x10/0x10 [ 211.321403][ T8] ? __set_cpus_allowed_ptr+0x1d6/0x2c0 [ 211.321461][ T8] ? __cfi___set_cpus_allowed_ptr+0x10/0x10 [ 211.321508][ T8] ? kick_pool+0xad/0x540 [ 211.321569][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 211.321655][ T8] process_scheduled_works+0x7f7/0x1060 [ 211.321722][ T8] rescuer_thread+0xce5/0x1620 [ 211.321787][ T8] ? _raw_spin_lock_irqsave+0xc1/0x160 [ 211.321861][ T8] kthread+0x2c7/0x360 [ 211.321923][ T8] ? __cfi_rescuer_thread+0x10/0x10 [ 211.321994][ T8] ? __cfi_kthread+0x10/0x10 [ 211.322060][ T8] ret_from_fork+0x67/0xa0 [ 211.322140][ T8] ? __cfi_kthread+0x10/0x10 [ 211.322212][ T8] ret_from_fork_asm+0x1a/0x30 [ 211.322297][ T8] [ 211.322348][ T8] FAULT_INJECTION: forcing a failure. [ 211.322348][ T8] name failslab, interval 1, probability 100, space 0, times -1 [ 211.323088][ T37] [ 211.323096][ T37] Call Trace: [ 211.323103][ T37] [ 211.323113][ T37] __schedule+0x1496/0x20b0 [ 211.331081][ T8] CPU: 0 UID: 0 PID: 8 Comm: kworker/R-netns Not tainted syzkaller #0 45964a5c932d45c81e53484b258bbb49855afb35 [ 211.331159][ T8] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 211.331193][ T8] Workqueue: netns cleanup_net [ 211.331255][ T8] Call Trace: [ 211.331272][ T8] [ 211.331292][ T8] __dump_stack+0x21/0x30 [ 211.331354][ T8] dump_stack_lvl+0x140/0x1c0 [ 211.331424][ T8] ? __cfi_dump_stack_lvl+0x10/0x10 [ 211.331488][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 211.331542][ T8] ? kvfree_call_rcu+0x40e/0x730 [ 211.331626][ T8] dump_stack+0x19/0x20 [ 211.331686][ T8] should_fail_ex+0x3c2/0x510 [ 211.331744][ T8] should_failslab+0xac/0x100 [ 211.331816][ T8] __kmalloc_cache_noprof+0x41/0x470 [ 211.331885][ T8] ? __dev_set_rx_mode+0x74/0x280 [ 211.331940][ T8] ? igmp6_group_dropped+0x3b7/0xc10 [ 211.332002][ T8] ? _raw_spin_unlock_bh+0x54/0x60 [ 211.332064][ T8] igmp6_group_dropped+0x3b7/0xc10 [ 211.332135][ T8] ? __ipv6_dev_mc_inc+0xa30/0xa30 [ 211.332190][ T8] ? mutex_lock+0x97/0x1d0 [ 211.332281][ T8] ? __kasan_check_write+0x18/0x20 [ 211.332334][ T8] ? __kasan_check_read+0x15/0x20 [ 211.332395][ T8] __ipv6_dev_mc_dec+0x29f/0x4c0 [ 211.332462][ T8] __ipv6_ifa_notify+0x7b1/0xee0 [ 211.332555][ T8] ? snmp6_fill_stats+0x9b0/0x9b0 [ 211.332630][ T8] ? _raw_spin_lock+0x92/0x120 [ 211.332693][ T8] ? __cfi__raw_spin_lock+0x10/0x10 [ 211.332779][ T8] ? __kasan_check_write+0x18/0x20 [ 211.332842][ T8] ? work_grab_pending+0x301/0x830 [ 211.332903][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 211.332959][ T8] ? kvfree_call_rcu+0x40e/0x730 [ 211.333011][ T8] ? mod_delayed_work_on+0x140/0x140 [ 211.333082][ T8] ? __kasan_check_write+0x18/0x20 [ 211.333135][ T8] ? _raw_spin_lock_bh+0x96/0x130 [ 211.333181][ T8] ? __cfi__raw_spin_lock_bh+0x10/0x10 [ 211.333249][ T8] ? __cancel_work+0x175/0x1f0 [ 211.333312][ T8] addrconf_ifdown+0xe01/0x1970 [ 211.333365][ T8] ? addrconf_cleanup+0x150/0x150 [ 211.333411][ T8] ? __kasan_check_write+0x18/0x20 [ 211.333449][ T8] ? mutex_unlock+0x90/0x240 [ 211.333518][ T8] ? __cfi_mutex_unlock+0x10/0x10 [ 211.333585][ T8] ? __cfi_device_cmp+0x10/0x10 [ 211.333655][ T8] ? masq_device_event+0xe0/0xe0 [ 211.333713][ T8] addrconf_notify+0x17a/0xeb0 [ 211.333767][ T8] ? ip6mr_device_event+0x1ed/0x230 [ 211.333813][ T8] ? __cfi_addrconf_notify+0x10/0x10 [ 211.333896][ T8] notifier_call_chain+0x106/0x2b0 [ 211.333953][ T8] raw_notifier_call_chain+0x31/0x40 [ 211.334005][ T8] dev_close_many+0x332/0x4f0 [ 211.334050][ T8] ? __cfi_dev_close_many+0x10/0x10 [ 211.334105][ T8] ? __kasan_check_read+0x15/0x20 [ 211.334156][ T8] unregister_netdevice_many_notify+0x4bd/0x1be0 [ 211.334230][ T8] ? __cfi_unregister_netdevice_many_notify+0x10/0x10 [ 211.334299][ T8] ? __kasan_check_read+0x15/0x20 [ 211.334346][ T8] ? __kasan_check_read+0x15/0x20 [ 211.334396][ T8] ? unregister_netdevice_queue+0x18a/0x350 [ 211.334466][ T8] default_device_exit_batch+0x845/0x8d0 [ 211.334537][ T8] ? mutex_lock+0x97/0x1d0 [ 211.334600][ T8] ? __cfi_mutex_lock+0x10/0x10 [ 211.334668][ T8] ? __cfi_default_device_exit_batch+0x10/0x10 [ 211.334741][ T8] ? rtnl_unlock+0x12/0x20 [ 211.334801][ T8] ? __cfi_default_device_exit_batch+0x10/0x10 [ 211.334871][ T8] cleanup_net+0x744/0xc90 [ 211.334930][ T8] ? __cfi_cleanup_net+0x10/0x10 [ 211.334983][ T8] ? __set_cpus_allowed_ptr+0x1d6/0x2c0 [ 211.335044][ T8] ? __cfi___set_cpus_allowed_ptr+0x10/0x10 [ 211.335106][ T8] ? kick_pool+0xad/0x540 [ 211.335166][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 211.335235][ T8] process_scheduled_works+0x7f7/0x1060 [ 211.335315][ T8] rescuer_thread+0xce5/0x1620 [ 211.335369][ T8] ? _raw_spin_lock_irqsave+0xc1/0x160 [ 211.335431][ T8] kthread+0x2c7/0x360 [ 211.335486][ T8] ? __cfi_rescuer_thread+0x10/0x10 [ 211.335539][ T8] ? __cfi_kthread+0x10/0x10 [ 211.335592][ T8] ret_from_fork+0x67/0xa0 [ 211.335660][ T8] ? __cfi_kthread+0x10/0x10 [ 211.335714][ T8] ret_from_fork_asm+0x1a/0x30 [ 211.335757][ T8] [ 211.336022][ T8] FAULT_INJECTION: forcing a failure. [ 211.336022][ T8] name failslab, interval 1, probability 100, space 0, times -1 [ 211.336080][ T8] CPU: 0 UID: 0 PID: 8 Comm: kworker/R-netns Not tainted syzkaller #0 45964a5c932d45c81e53484b258bbb49855afb35 [ 211.336104][ T8] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 211.336117][ T8] Workqueue: netns cleanup_net [ 211.336141][ T8] Call Trace: [ 211.336153][ T8] [ 211.336181][ T8] __dump_stack+0x21/0x30 [ 211.336266][ T8] dump_stack_lvl+0x140/0x1c0 [ 211.336342][ T8] ? __cfi_dump_stack_lvl+0x10/0x10 [ 211.336413][ T8] ? _raw_spin_lock_bh+0x96/0x130 [ 211.336467][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 211.336567][ T8] ? pneigh_queue_purge+0x570/0x5d0 [ 211.336634][ T8] ? timer_delete+0x101/0x3e0 [ 211.336692][ T8] dump_stack+0x19/0x20 [ 211.336753][ T8] should_fail_ex+0x3c2/0x510 [ 211.336810][ T8] should_failslab+0xac/0x100 [ 211.336873][ T8] kmem_cache_alloc_node_noprof+0x45/0x420 [ 211.336930][ T8] ? __alloc_skb+0x10c/0x360 [ 211.336996][ T8] __alloc_skb+0x10c/0x360 [ 211.337068][ T8] rtmsg_ifinfo_build_skb+0x7a/0x270 [ 211.337130][ T8] rtmsg_ifinfo+0x91/0x1a0 [ 211.337184][ T8] dev_close_many+0x27b/0x4f0 [ 211.337239][ T8] ? __cfi_dev_close_many+0x10/0x10 [ 211.337297][ T8] ? __kasan_check_read+0x15/0x20 [ 211.337353][ T8] unregister_netdevice_many_notify+0x4bd/0x1be0 [ 211.337430][ T8] ? __cfi_unregister_netdevice_many_notify+0x10/0x10 [ 211.337500][ T8] ? __kasan_check_read+0x15/0x20 [ 211.337549][ T8] ? __kasan_check_read+0x15/0x20 [ 211.337611][ T8] ? unregister_netdevice_queue+0x18a/0x350 [ 211.337708][ T8] default_device_exit_batch+0x845/0x8d0 [ 211.337798][ T8] ? mutex_lock+0x97/0x1d0 [ 211.337854][ T8] ? __cfi_mutex_lock+0x10/0x10 [ 211.337914][ T8] ? __cfi_default_device_exit_batch+0x10/0x10 [ 211.337986][ T8] ? rtnl_unlock+0x12/0x20 [ 211.338055][ T8] ? __cfi_default_device_exit_batch+0x10/0x10 [ 211.338117][ T8] cleanup_net+0x744/0xc90 [ 211.338171][ T8] ? __cfi_cleanup_net+0x10/0x10 [ 211.338226][ T8] ? __set_cpus_allowed_ptr+0x1d6/0x2c0 [ 211.338287][ T8] ? __cfi___set_cpus_allowed_ptr+0x10/0x10 [ 211.338338][ T8] ? kick_pool+0xad/0x540 [ 211.338387][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 211.338449][ T8] process_scheduled_works+0x7f7/0x1060 [ 211.338510][ T8] rescuer_thread+0xce5/0x1620 [ 211.338555][ T8] ? _raw_spin_lock_irqsave+0xc1/0x160 [ 211.338606][ T8] kthread+0x2c7/0x360 [ 211.338660][ T8] ? __cfi_rescuer_thread+0x10/0x10 [ 211.338715][ T8] ? __cfi_kthread+0x10/0x10 [ 211.338764][ T8] ret_from_fork+0x67/0xa0 [ 211.338829][ T8] ? __cfi_kthread+0x10/0x10 [ 211.338895][ T8] ret_from_fork_asm+0x1a/0x30 [ 211.338947][ T8] [ 211.339288][ T8] FAULT_INJECTION: forcing a failure. [ 211.339288][ T8] name failslab, interval 1, probability 100, space 0, times -1 [ 211.345012][ T37] ? __sched_text_start+0x10/0x10 [ 211.352732][ T8] CPU: 0 UID: 0 PID: 8 Comm: kworker/R-netns Not tainted syzkaller #0 45964a5c932d45c81e53484b258bbb49855afb35 [ 211.352809][ T8] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 211.352865][ T8] Workqueue: netns cleanup_net [ 211.352932][ T8] Call Trace: [ 211.352949][ T8] [ 211.352973][ T8] __dump_stack+0x21/0x30 [ 211.353076][ T8] dump_stack_lvl+0x140/0x1c0 [ 211.353146][ T8] ? __cfi_dump_stack_lvl+0x10/0x10 [ 211.353210][ T8] ? prb_first_seq+0x109/0x1d0 [ 211.353277][ T8] ? __cfi_prb_first_seq+0x10/0x10 [ 211.353332][ T8] dump_stack+0x19/0x20 [ 211.353393][ T8] should_fail_ex+0x3c2/0x510 [ 211.353455][ T8] should_failslab+0xac/0x100 [ 211.353511][ T8] kmem_cache_alloc_node_noprof+0x45/0x420 [ 211.353562][ T8] ? __kasan_check_write+0x18/0x20 [ 211.353607][ T8] ? __alloc_skb+0x10c/0x360 [ 211.353669][ T8] ? __cfi__raw_spin_lock_bh+0x10/0x10 [ 211.353724][ T8] __alloc_skb+0x10c/0x360 [ 211.353791][ T8] inet6_rt_notify+0x351/0x520 [ 211.353842][ T8] ? fib6_purge_rt+0x6f8/0x7b0 [ 211.353912][ T8] ? __cfi_inet6_rt_notify+0x10/0x10 [ 211.353966][ T8] fib6_del+0xba0/0xf50 [ 211.354024][ T8] ? __cfi_fib6_del+0x10/0x10 [ 211.354085][ T8] ? stack_trace_save+0xaa/0x100 [ 211.354147][ T8] ? stack_depot_save_flags+0x38/0x800 [ 211.354209][ T8] ? fib6_ifdown+0x2f1/0x4f0 [ 211.354278][ T8] fib6_clean_node+0x2b9/0x560 [ 211.354361][ T8] ? __cfi_fib6_clean_node+0x10/0x10 [ 211.354462][ T8] ? __kasan_check_write+0x18/0x20 [ 211.354511][ T8] ? _raw_spin_lock+0x92/0x120 [ 211.354564][ T8] ? __cfi__raw_spin_lock+0x10/0x10 [ 211.354616][ T8] fib6_walk_continue+0x518/0x740 [ 211.354682][ T8] __fib6_clean_all+0x2a2/0x440 [ 211.354741][ T8] ? __cfi_fib6_ifdown+0x10/0x10 [ 211.354787][ T8] ? fib6_clean_all+0x50/0x50 [ 211.354856][ T8] ? __cfi_fib6_clean_node+0x10/0x10 [ 211.354928][ T8] ? __cfi_fib6_ifdown+0x10/0x10 [ 211.354973][ T8] ? __cfi_fib6_ifdown+0x10/0x10 [ 211.355018][ T8] fib6_clean_all+0x2e/0x50 [ 211.355080][ T8] rt6_disable_ip+0x124/0x810 [ 211.355127][ T8] ? __cfi__raw_spin_lock_irqsave+0x10/0x10 [ 211.355187][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 211.355230][ T8] ? __cfi_rt6_disable_ip+0x10/0x10 [ 211.355285][ T8] ? pneigh_queue_purge+0x570/0x5d0 [ 211.355348][ T8] ? __kasan_check_read+0x15/0x20 [ 211.355398][ T8] addrconf_ifdown+0x161/0x1970 [ 211.355452][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 211.355506][ T8] ? __try_to_del_timer_sync+0x2e8/0x440 [ 211.355567][ T8] ? addrconf_cleanup+0x150/0x150 [ 211.355618][ T8] ? __kasan_check_write+0x18/0x20 [ 211.355694][ T8] ? mutex_unlock+0x90/0x240 [ 211.355765][ T8] ? __cfi_mutex_unlock+0x10/0x10 [ 211.355828][ T8] ? __cfi_device_cmp+0x10/0x10 [ 211.355890][ T8] ? masq_device_event+0xe0/0xe0 [ 211.355951][ T8] addrconf_notify+0x17a/0xeb0 [ 211.356004][ T8] ? ip6mr_device_event+0x1ed/0x230 [ 211.356051][ T8] ? __cfi_addrconf_notify+0x10/0x10 [ 211.356104][ T8] notifier_call_chain+0x106/0x2b0 [ 211.356155][ T8] raw_notifier_call_chain+0x31/0x40 [ 211.356200][ T8] dev_close_many+0x332/0x4f0 [ 211.356253][ T8] ? __cfi_dev_close_many+0x10/0x10 [ 211.356306][ T8] ? __kasan_check_read+0x15/0x20 [ 211.356350][ T8] unregister_netdevice_many_notify+0x4bd/0x1be0 [ 211.356411][ T8] ? __cfi_unregister_netdevice_many_notify+0x10/0x10 [ 211.356488][ T8] ? __kasan_check_read+0x15/0x20 [ 211.356559][ T8] ? __kasan_check_read+0x15/0x20 [ 211.356604][ T8] ? unregister_netdevice_queue+0x18a/0x350 [ 211.356679][ T8] default_device_exit_batch+0x845/0x8d0 [ 211.356751][ T8] ? mutex_lock+0x97/0x1d0 [ 211.356818][ T8] ? __cfi_mutex_lock+0x10/0x10 [ 211.356884][ T8] ? __cfi_default_device_exit_batch+0x10/0x10 [ 211.356960][ T8] ? rtnl_unlock+0x12/0x20 [ 211.357052][ T8] ? __cfi_default_device_exit_batch+0x10/0x10 [ 211.357137][ T8] cleanup_net+0x744/0xc90 [ 211.357202][ T8] ? __cfi_cleanup_net+0x10/0x10 [ 211.357268][ T8] ? __set_cpus_allowed_ptr+0x1d6/0x2c0 [ 211.357324][ T8] ? __cfi___set_cpus_allowed_ptr+0x10/0x10 [ 211.357381][ T8] ? kick_pool+0xad/0x540 [ 211.357439][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 211.357503][ T8] process_scheduled_works+0x7f7/0x1060 [ 211.357567][ T8] rescuer_thread+0xce5/0x1620 [ 211.357625][ T8] ? _raw_spin_lock_irqsave+0xc1/0x160 [ 211.357692][ T8] kthread+0x2c7/0x360 [ 211.357752][ T8] ? __cfi_rescuer_thread+0x10/0x10 [ 211.357813][ T8] ? __cfi_kthread+0x10/0x10 [ 211.357864][ T8] ret_from_fork+0x67/0xa0 [ 211.357891][ T8] ? __cfi_kthread+0x10/0x10 [ 211.357914][ T8] ret_from_fork_asm+0x1a/0x30 [ 211.357935][ T8] [ 211.358052][ T8] FAULT_INJECTION: forcing a failure. [ 211.358052][ T8] name failslab, interval 1, probability 100, space 0, times -1 [ 211.366112][ T37] ? kthread_data+0x54/0xc0 [ 211.373814][ T8] CPU: 0 UID: 0 PID: 8 Comm: kworker/R-netns Not tainted syzkaller #0 45964a5c932d45c81e53484b258bbb49855afb35 [ 211.373883][ T8] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 211.373923][ T8] Workqueue: netns cleanup_net [ 211.373990][ T8] Call Trace: [ 211.374007][ T8] [ 211.374025][ T8] __dump_stack+0x21/0x30 [ 211.374089][ T8] dump_stack_lvl+0x140/0x1c0 [ 211.374153][ T8] ? __cfi_dump_stack_lvl+0x10/0x10 [ 211.374224][ T8] dump_stack+0x19/0x20 [ 211.374286][ T8] should_fail_ex+0x3c2/0x510 [ 211.374339][ T8] should_failslab+0xac/0x100 [ 211.374401][ T8] kmem_cache_alloc_node_noprof+0x45/0x420 [ 211.374450][ T8] ? __kasan_check_write+0x18/0x20 [ 211.374499][ T8] ? __alloc_skb+0x10c/0x360 [ 211.374560][ T8] ? __cfi__raw_spin_lock_bh+0x10/0x10 [ 211.374618][ T8] __alloc_skb+0x10c/0x360 [ 211.374684][ T8] inet6_rt_notify+0x351/0x520 [ 211.374738][ T8] ? __cfi_inet6_rt_notify+0x10/0x10 [ 211.374779][ T8] ? call_fib_notifiers+0xa4/0xc0 [ 211.374825][ T8] fib6_del+0xba0/0xf50 [ 211.374895][ T8] ? __cfi_fib6_del+0x10/0x10 [ 211.374951][ T8] ? stack_trace_save+0xaa/0x100 [ 211.375012][ T8] ? fib6_ifdown+0x2f1/0x4f0 [ 211.375057][ T8] fib6_clean_node+0x2b9/0x560 [ 211.375129][ T8] ? __cfi_fib6_clean_node+0x10/0x10 [ 211.375195][ T8] ? __kasan_check_write+0x18/0x20 [ 211.375247][ T8] ? _raw_spin_lock+0x92/0x120 [ 211.375321][ T8] ? __cfi__raw_spin_lock+0x10/0x10 [ 211.375393][ T8] fib6_walk_continue+0x518/0x740 [ 211.375464][ T8] __fib6_clean_all+0x2a2/0x440 [ 211.375527][ T8] ? __cfi_fib6_ifdown+0x10/0x10 [ 211.375576][ T8] ? fib6_clean_all+0x50/0x50 [ 211.375639][ T8] ? __cfi_fib6_clean_node+0x10/0x10 [ 211.375704][ T8] ? __cfi_fib6_ifdown+0x10/0x10 [ 211.375760][ T8] ? __cfi_fib6_ifdown+0x10/0x10 [ 211.375799][ T8] fib6_clean_all+0x2e/0x50 [ 211.375862][ T8] rt6_disable_ip+0x124/0x810 [ 211.375913][ T8] ? __cfi__raw_spin_lock_irqsave+0x10/0x10 [ 211.375967][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 211.376019][ T8] ? __cfi_rt6_disable_ip+0x10/0x10 [ 211.376065][ T8] ? pneigh_queue_purge+0x570/0x5d0 [ 211.376127][ T8] ? __kasan_check_read+0x15/0x20 [ 211.376180][ T8] addrconf_ifdown+0x161/0x1970 [ 211.376226][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 211.376287][ T8] ? __try_to_del_timer_sync+0x2e8/0x440 [ 211.376349][ T8] ? addrconf_cleanup+0x150/0x150 [ 211.376403][ T8] ? __kasan_check_write+0x18/0x20 [ 211.376448][ T8] ? mutex_unlock+0x90/0x240 [ 211.376536][ T8] ? __cfi_mutex_unlock+0x10/0x10 [ 211.376606][ T8] ? __cfi_device_cmp+0x10/0x10 [ 211.376667][ T8] ? masq_device_event+0xe0/0xe0 [ 211.376744][ T8] addrconf_notify+0x17a/0xeb0 [ 211.376815][ T8] ? ip6mr_device_event+0x1ed/0x230 [ 211.376862][ T8] ? __cfi_addrconf_notify+0x10/0x10 [ 211.376915][ T8] notifier_call_chain+0x106/0x2b0 [ 211.376965][ T8] raw_notifier_call_chain+0x31/0x40 [ 211.377013][ T8] dev_close_many+0x332/0x4f0 [ 211.377059][ T8] ? __cfi_dev_close_many+0x10/0x10 [ 211.377115][ T8] ? __kasan_check_read+0x15/0x20 [ 211.377161][ T8] unregister_netdevice_many_notify+0x4bd/0x1be0 [ 211.377231][ T8] ? __cfi_unregister_netdevice_many_notify+0x10/0x10 [ 211.377303][ T8] ? __kasan_check_read+0x15/0x20 [ 211.377349][ T8] ? __kasan_check_read+0x15/0x20 [ 211.377394][ T8] ? unregister_netdevice_queue+0x18a/0x350 [ 211.377465][ T8] default_device_exit_batch+0x845/0x8d0 [ 211.377538][ T8] ? mutex_lock+0x97/0x1d0 [ 211.377593][ T8] ? __cfi_mutex_lock+0x10/0x10 [ 211.377655][ T8] ? __cfi_default_device_exit_batch+0x10/0x10 [ 211.377744][ T8] ? rtnl_unlock+0x12/0x20 [ 211.377809][ T8] ? __cfi_default_device_exit_batch+0x10/0x10 [ 211.377883][ T8] cleanup_net+0x744/0xc90 [ 211.377946][ T8] ? __cfi_cleanup_net+0x10/0x10 [ 211.378000][ T8] ? __set_cpus_allowed_ptr+0x1d6/0x2c0 [ 211.378053][ T8] ? __cfi___set_cpus_allowed_ptr+0x10/0x10 [ 211.378127][ T8] ? kick_pool+0xad/0x540 [ 211.378201][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 211.378259][ T8] process_scheduled_works+0x7f7/0x1060 [ 211.378316][ T8] rescuer_thread+0xce5/0x1620 [ 211.378376][ T8] ? _raw_spin_lock_irqsave+0xc1/0x160 [ 211.378438][ T8] kthread+0x2c7/0x360 [ 211.378486][ T8] ? __cfi_rescuer_thread+0x10/0x10 [ 211.378540][ T8] ? __cfi_kthread+0x10/0x10 [ 211.378594][ T8] ret_from_fork+0x67/0xa0 [ 211.378666][ T8] ? __cfi_kthread+0x10/0x10 [ 211.378720][ T8] ret_from_fork_asm+0x1a/0x30 [ 211.378763][ T8] [ 211.378790][ T8] FAULT_INJECTION: forcing a failure. [ 211.378790][ T8] name failslab, interval 1, probability 100, space 0, times -1 [ 211.378812][ T8] CPU: 0 UID: 0 PID: 8 Comm: kworker/R-netns Not tainted syzkaller #0 45964a5c932d45c81e53484b258bbb49855afb35 [ 211.378837][ T8] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 211.378864][ T8] Workqueue: netns cleanup_net [ 211.378947][ T8] Call Trace: [ 211.378966][ T8] [ 211.378986][ T8] __dump_stack+0x21/0x30 [ 211.379056][ T8] dump_stack_lvl+0x140/0x1c0 [ 211.379117][ T8] ? __cfi_dump_stack_lvl+0x10/0x10 [ 211.379165][ T8] dump_stack+0x19/0x20 [ 211.379231][ T8] should_fail_ex+0x3c2/0x510 [ 211.379287][ T8] should_failslab+0xac/0x100 [ 211.379337][ T8] kmem_cache_alloc_node_noprof+0x45/0x420 [ 211.379393][ T8] ? __kasan_check_write+0x18/0x20 [ 211.379440][ T8] ? __alloc_skb+0x10c/0x360 [ 211.379502][ T8] ? __cfi__raw_spin_lock_bh+0x10/0x10 [ 211.379557][ T8] __alloc_skb+0x10c/0x360 [ 211.379620][ T8] inet6_rt_notify+0x351/0x520 [ 211.379667][ T8] ? fib6_purge_rt+0x6f8/0x7b0 [ 211.379732][ T8] ? __cfi_inet6_rt_notify+0x10/0x10 [ 211.379791][ T8] ? call_fib_notifiers+0xa4/0xc0 [ 211.379836][ T8] fib6_del+0xba0/0xf50 [ 211.379900][ T8] ? __cfi_fib6_del+0x10/0x10 [ 211.379962][ T8] ? stack_trace_save+0xaa/0x100 [ 211.380018][ T8] ? fib6_ifdown+0x2f1/0x4f0 [ 211.380057][ T8] fib6_clean_node+0x2b9/0x560 [ 211.380148][ T8] ? __cfi_fib6_clean_node+0x10/0x10 [ 211.380218][ T8] ? __kasan_check_write+0x18/0x20 [ 211.380288][ T8] ? _raw_spin_lock+0x92/0x120 [ 211.380377][ T8] ? __cfi__raw_spin_lock+0x10/0x10 [ 211.380466][ T8] fib6_walk_continue+0x518/0x740 [ 211.380549][ T8] __fib6_clean_all+0x2a2/0x440 [ 211.380614][ T8] ? __cfi_fib6_ifdown+0x10/0x10 [ 211.380663][ T8] ? fib6_clean_all+0x50/0x50 [ 211.380736][ T8] ? __cfi_fib6_clean_node+0x10/0x10 [ 211.380799][ T8] ? __cfi_fib6_ifdown+0x10/0x10 [ 211.380856][ T8] ? __cfi_fib6_ifdown+0x10/0x10 [ 211.380906][ T8] fib6_clean_all+0x2e/0x50 [ 211.380978][ T8] rt6_disable_ip+0x124/0x810 [ 211.381033][ T8] ? __cfi__raw_spin_lock_irqsave+0x10/0x10 [ 211.381093][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 211.381157][ T8] ? __cfi_rt6_disable_ip+0x10/0x10 [ 211.381205][ T8] ? pneigh_queue_purge+0x570/0x5d0 [ 211.381282][ T8] ? __kasan_check_read+0x15/0x20 [ 211.381352][ T8] addrconf_ifdown+0x161/0x1970 [ 211.381399][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 211.381470][ T8] ? __try_to_del_timer_sync+0x2e8/0x440 [ 211.381534][ T8] ? addrconf_cleanup+0x150/0x150 [ 211.381584][ T8] ? __kasan_check_write+0x18/0x20 [ 211.381661][ T8] ? mutex_unlock+0x90/0x240 [ 211.381736][ T8] ? __cfi_mutex_unlock+0x10/0x10 [ 211.381831][ T8] ? __cfi_device_cmp+0x10/0x10 [ 211.381905][ T8] ? masq_device_event+0xe0/0xe0 [ 211.381979][ T8] addrconf_notify+0x17a/0xeb0 [ 211.382049][ T8] ? ip6mr_device_event+0x1ed/0x230 [ 211.382103][ T8] ? __cfi_addrconf_notify+0x10/0x10 [ 211.382174][ T8] notifier_call_chain+0x106/0x2b0 [ 211.382243][ T8] raw_notifier_call_chain+0x31/0x40 [ 211.382298][ T8] dev_close_many+0x332/0x4f0 [ 211.382358][ T8] ? __cfi_dev_close_many+0x10/0x10 [ 211.382421][ T8] ? __kasan_check_read+0x15/0x20 [ 211.382485][ T8] unregister_netdevice_many_notify+0x4bd/0x1be0 [ 211.382572][ T8] ? __cfi_unregister_netdevice_many_notify+0x10/0x10 [ 211.382653][ T8] ? __kasan_check_read+0x15/0x20 [ 211.382715][ T8] ? __kasan_check_read+0x15/0x20 [ 211.382750][ T8] ? unregister_netdevice_queue+0x18a/0x350 [ 211.382852][ T8] default_device_exit_batch+0x845/0x8d0 [ 211.382936][ T8] ? mutex_lock+0x97/0x1d0 [ 211.382998][ T8] ? __cfi_mutex_lock+0x10/0x10 [ 211.383059][ T8] ? __cfi_default_device_exit_batch+0x10/0x10 [ 211.383168][ T8] ? rtnl_unlock+0x12/0x20 [ 211.383253][ T8] ? __cfi_default_device_exit_batch+0x10/0x10 [ 211.383324][ T8] cleanup_net+0x744/0xc90 [ 211.383378][ T8] ? __cfi_cleanup_net+0x10/0x10 [ 211.383437][ T8] ? __set_cpus_allowed_ptr+0x1d6/0x2c0 [ 211.383478][ T8] ? __cfi___set_cpus_allowed_ptr+0x10/0x10 [ 211.383552][ T8] ? kick_pool+0xad/0x540 [ 211.383603][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 211.383662][ T8] process_scheduled_works+0x7f7/0x1060 [ 211.383717][ T8] rescuer_thread+0xce5/0x1620 [ 211.383766][ T8] ? _raw_spin_lock_irqsave+0xc1/0x160 [ 211.383833][ T8] kthread+0x2c7/0x360 [ 211.383885][ T8] ? __cfi_rescuer_thread+0x10/0x10 [ 211.383934][ T8] ? __cfi_kthread+0x10/0x10 [ 211.383993][ T8] ret_from_fork+0x67/0xa0 [ 211.384057][ T8] ? __cfi_kthread+0x10/0x10 [ 211.384105][ T8] ret_from_fork_asm+0x1a/0x30 [ 211.384159][ T8] [ 211.384338][ T8] FAULT_INJECTION: forcing a failure. [ 211.384338][ T8] name failslab, interval 1, probability 100, space 0, times -1 [ 211.386035][ T37] ? wq_worker_sleeping+0x68/0x260 [ 211.386064][ T37] schedule+0xc5/0x240 [ 211.394492][ T8] CPU: 0 UID: 0 PID: 8 Comm: kworker/R-netns Not tainted syzkaller #0 45964a5c932d45c81e53484b258bbb49855afb35 [ 211.394571][ T8] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 211.394606][ T8] Workqueue: netns cleanup_net [ 211.394667][ T8] Call Trace: [ 211.394685][ T8] [ 211.394703][ T8] __dump_stack+0x21/0x30 [ 211.394764][ T8] dump_stack_lvl+0x140/0x1c0 [ 211.394833][ T8] ? __cfi_dump_stack_lvl+0x10/0x10 [ 211.394895][ T8] ? fib6_clean_node+0x423/0x560 [ 211.394966][ T8] ? __cfi_fib6_clean_node+0x10/0x10 [ 211.395045][ T8] dump_stack+0x19/0x20 [ 211.395123][ T8] should_fail_ex+0x3c2/0x510 [ 211.395178][ T8] should_failslab+0xac/0x100 [ 211.395241][ T8] kmem_cache_alloc_node_noprof+0x45/0x420 [ 211.395294][ T8] ? __cfi__raw_spin_lock_irqsave+0x10/0x10 [ 211.395349][ T8] ? __alloc_skb+0x10c/0x360 [ 211.395410][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 211.395469][ T8] __alloc_skb+0x10c/0x360 [ 211.395533][ T8] __ipv6_ifa_notify+0x205/0xee0 [ 211.395585][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 211.395640][ T8] ? snmp6_fill_stats+0x9b0/0x9b0 [ 211.395694][ T8] ? timer_delete+0x101/0x3e0 [ 211.395751][ T8] ? __kasan_check_write+0x18/0x20 [ 211.395797][ T8] ? work_grab_pending+0x301/0x830 [ 211.395861][ T8] ? neigh_ifdown+0x23/0x30 [ 211.395936][ T8] ? rt6_disable_ip+0x79e/0x810 [ 211.395999][ T8] ? mod_delayed_work_on+0x140/0x140 [ 211.396061][ T8] ? __kasan_check_write+0x18/0x20 [ 211.396107][ T8] ? _raw_spin_lock_bh+0x96/0x130 [ 211.396161][ T8] ? __cfi__raw_spin_lock_bh+0x10/0x10 [ 211.396220][ T8] ? __cancel_work+0x175/0x1f0 [ 211.396290][ T8] addrconf_ifdown+0xe01/0x1970 [ 211.396338][ T8] ? addrconf_cleanup+0x150/0x150 [ 211.396390][ T8] ? __kasan_check_write+0x18/0x20 [ 211.396442][ T8] ? mutex_unlock+0x90/0x240 [ 211.396532][ T8] ? __cfi_mutex_unlock+0x10/0x10 [ 211.396609][ T8] ? __cfi_device_cmp+0x10/0x10 [ 211.396676][ T8] ? masq_device_event+0xe0/0xe0 [ 211.396738][ T8] addrconf_notify+0x17a/0xeb0 [ 211.396795][ T8] ? ip6mr_device_event+0x1ed/0x230 [ 211.396844][ T8] ? __cfi_addrconf_notify+0x10/0x10 [ 211.396903][ T8] notifier_call_chain+0x106/0x2b0 [ 211.396957][ T8] raw_notifier_call_chain+0x31/0x40 [ 211.397006][ T8] dev_close_many+0x332/0x4f0 [ 211.397061][ T8] ? __cfi_dev_close_many+0x10/0x10 [ 211.397121][ T8] ? __kasan_check_read+0x15/0x20 [ 211.397170][ T8] unregister_netdevice_many_notify+0x4bd/0x1be0 [ 211.397261][ T8] ? __cfi_unregister_netdevice_many_notify+0x10/0x10 [ 211.397359][ T8] ? __kasan_check_read+0x15/0x20 [ 211.397413][ T8] ? __kasan_check_read+0x15/0x20 [ 211.397464][ T8] ? unregister_netdevice_queue+0x18a/0x350 [ 211.397540][ T8] default_device_exit_batch+0x845/0x8d0 [ 211.397618][ T8] ? mutex_lock+0x97/0x1d0 [ 211.397694][ T8] ? __cfi_mutex_lock+0x10/0x10 [ 211.397769][ T8] ? __cfi_default_device_exit_batch+0x10/0x10 [ 211.397849][ T8] ? rtnl_unlock+0x12/0x20 [ 211.397913][ T8] ? __cfi_default_device_exit_batch+0x10/0x10 [ 211.397984][ T8] cleanup_net+0x744/0xc90 [ 211.398044][ T8] ? __cfi_cleanup_net+0x10/0x10 [ 211.398094][ T8] ? __set_cpus_allowed_ptr+0x1d6/0x2c0 [ 211.398149][ T8] ? __cfi___set_cpus_allowed_ptr+0x10/0x10 [ 211.398196][ T8] ? kick_pool+0xad/0x540 [ 211.398256][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 211.398313][ T8] process_scheduled_works+0x7f7/0x1060 [ 211.398374][ T8] rescuer_thread+0xce5/0x1620 [ 211.398430][ T8] ? _raw_spin_lock_irqsave+0xc1/0x160 [ 211.398494][ T8] kthread+0x2c7/0x360 [ 211.398547][ T8] ? __cfi_rescuer_thread+0x10/0x10 [ 211.398600][ T8] ? __cfi_kthread+0x10/0x10 [ 211.398650][ T8] ret_from_fork+0x67/0xa0 [ 211.398729][ T8] ? __cfi_kthread+0x10/0x10 [ 211.398767][ T8] ret_from_fork_asm+0x1a/0x30 [ 211.398815][ T8] [ 211.399026][ T8] FAULT_INJECTION: forcing a failure. [ 211.399026][ T8] name failslab, interval 1, probability 100, space 0, times -1 [ 211.399049][ T8] CPU: 0 UID: 0 PID: 8 Comm: kworker/R-netns Not tainted syzkaller #0 45964a5c932d45c81e53484b258bbb49855afb35 [ 211.399074][ T8] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 211.399087][ T8] Workqueue: netns cleanup_net [ 211.399152][ T8] Call Trace: [ 211.399175][ T8] [ 211.399198][ T8] __dump_stack+0x21/0x30 [ 211.399278][ T8] dump_stack_lvl+0x140/0x1c0 [ 211.399340][ T8] ? __cfi_dump_stack_lvl+0x10/0x10 [ 211.399405][ T8] ? _raw_spin_lock_bh+0x96/0x130 [ 211.399511][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 211.399561][ T8] ? pneigh_queue_purge+0x570/0x5d0 [ 211.399635][ T8] ? timer_delete+0x101/0x3e0 [ 211.399706][ T8] dump_stack+0x19/0x20 [ 211.399785][ T8] should_fail_ex+0x3c2/0x510 [ 211.399849][ T8] should_failslab+0xac/0x100 [ 211.399920][ T8] kmem_cache_alloc_node_noprof+0x45/0x420 [ 211.399981][ T8] ? __alloc_skb+0x10c/0x360 [ 211.400062][ T8] __alloc_skb+0x10c/0x360 [ 211.400136][ T8] rtmsg_ifinfo_build_skb+0x7a/0x270 [ 211.400206][ T8] rtmsg_ifinfo+0x91/0x1a0 [ 211.400278][ T8] dev_close_many+0x27b/0x4f0 [ 211.400338][ T8] ? __cfi_dev_close_many+0x10/0x10 [ 211.400394][ T8] ? __kasan_check_read+0x15/0x20 [ 211.400455][ T8] unregister_netdevice_many_notify+0x4bd/0x1be0 [ 211.400546][ T8] ? __cfi_unregister_netdevice_many_notify+0x10/0x10 [ 211.400690][ T8] ? __kasan_check_read+0x15/0x20 [ 211.400742][ T8] ? __kasan_check_read+0x15/0x20 [ 211.400788][ T8] ? unregister_netdevice_queue+0x18a/0x350 [ 211.400852][ T8] default_device_exit_batch+0x845/0x8d0 [ 211.400938][ T8] ? mutex_lock+0x97/0x1d0 [ 211.401002][ T8] ? __cfi_mutex_lock+0x10/0x10 [ 211.401064][ T8] ? __cfi_default_device_exit_batch+0x10/0x10 [ 211.401134][ T8] ? rtnl_unlock+0x12/0x20 [ 211.401208][ T8] ? __cfi_default_device_exit_batch+0x10/0x10 [ 211.401283][ T8] cleanup_net+0x744/0xc90 [ 211.401343][ T8] ? __cfi_cleanup_net+0x10/0x10 [ 211.401398][ T8] ? __set_cpus_allowed_ptr+0x1d6/0x2c0 [ 211.401450][ T8] ? __cfi___set_cpus_allowed_ptr+0x10/0x10 [ 211.401502][ T8] ? kick_pool+0xad/0x540 [ 211.401554][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 211.401622][ T8] process_scheduled_works+0x7f7/0x1060 [ 211.401687][ T8] rescuer_thread+0xce5/0x1620 [ 211.401754][ T8] ? _raw_spin_lock_irqsave+0xc1/0x160 [ 211.401834][ T8] kthread+0x2c7/0x360 [ 211.401898][ T8] ? __cfi_rescuer_thread+0x10/0x10 [ 211.401986][ T8] ? __cfi_kthread+0x10/0x10 [ 211.402069][ T8] ret_from_fork+0x67/0xa0 [ 211.402154][ T8] ? __cfi_kthread+0x10/0x10 [ 211.402218][ T8] ret_from_fork_asm+0x1a/0x30 [ 211.402290][ T8] [ 211.402548][ T8] FAULT_INJECTION: forcing a failure. [ 211.402548][ T8] name failslab, interval 1, probability 100, space 0, times -1 [ 211.406651][ T37] schedule_preempt_disabled+0x14/0x30 [ 211.414037][ T8] CPU: 0 UID: 0 PID: 8 Comm: kworker/R-netns Not tainted syzkaller #0 45964a5c932d45c81e53484b258bbb49855afb35 [ 211.414062][ T8] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 211.414110][ T8] Workqueue: netns cleanup_net [ 211.414192][ T8] Call Trace: [ 211.414217][ T8] [ 211.414244][ T8] __dump_stack+0x21/0x30 [ 211.414312][ T8] dump_stack_lvl+0x140/0x1c0 [ 211.414402][ T8] ? __cfi_dump_stack_lvl+0x10/0x10 [ 211.414470][ T8] ? prb_first_seq+0x109/0x1d0 [ 211.414527][ T8] ? __cfi_prb_first_seq+0x10/0x10 [ 211.414584][ T8] dump_stack+0x19/0x20 [ 211.414650][ T8] should_fail_ex+0x3c2/0x510 [ 211.414708][ T8] should_failslab+0xac/0x100 [ 211.414778][ T8] kmem_cache_alloc_node_noprof+0x45/0x420 [ 211.414838][ T8] ? __kasan_check_write+0x18/0x20 [ 211.414887][ T8] ? __alloc_skb+0x10c/0x360 [ 211.414953][ T8] ? __cfi__raw_spin_lock_bh+0x10/0x10 [ 211.415011][ T8] __alloc_skb+0x10c/0x360 [ 211.415079][ T8] inet6_rt_notify+0x351/0x520 [ 211.415136][ T8] ? fib6_purge_rt+0x6f8/0x7b0 [ 211.415206][ T8] ? __cfi_inet6_rt_notify+0x10/0x10 [ 211.415275][ T8] fib6_del+0xba0/0xf50 [ 211.415352][ T8] ? __cfi_fib6_del+0x10/0x10 [ 211.415418][ T8] ? stack_trace_save+0xaa/0x100 [ 211.415483][ T8] ? stack_depot_save_flags+0x38/0x800 [ 211.415570][ T8] ? fib6_ifdown+0x2f1/0x4f0 [ 211.415635][ T8] fib6_clean_node+0x2b9/0x560 [ 211.415706][ T8] ? __cfi_fib6_clean_node+0x10/0x10 [ 211.415765][ T8] ? __kasan_check_write+0x18/0x20 [ 211.415816][ T8] ? _raw_spin_lock+0x92/0x120 [ 211.415864][ T8] ? __cfi__raw_spin_lock+0x10/0x10 [ 211.415916][ T8] fib6_walk_continue+0x518/0x740 [ 211.415987][ T8] __fib6_clean_all+0x2a2/0x440 [ 211.416056][ T8] ? __cfi_fib6_ifdown+0x10/0x10 [ 211.416102][ T8] ? fib6_clean_all+0x50/0x50 [ 211.416165][ T8] ? __cfi_fib6_clean_node+0x10/0x10 [ 211.416230][ T8] ? __cfi_fib6_ifdown+0x10/0x10 [ 211.416290][ T8] ? __cfi_fib6_ifdown+0x10/0x10 [ 211.416335][ T8] fib6_clean_all+0x2e/0x50 [ 211.416398][ T8] rt6_disable_ip+0x124/0x810 [ 211.416445][ T8] ? __cfi__raw_spin_lock_irqsave+0x10/0x10 [ 211.416542][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 211.416614][ T8] ? __cfi_rt6_disable_ip+0x10/0x10 [ 211.416673][ T8] ? pneigh_queue_purge+0x570/0x5d0 [ 211.416749][ T8] ? __kasan_check_read+0x15/0x20 [ 211.416810][ T8] addrconf_ifdown+0x161/0x1970 [ 211.416862][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 211.416944][ T8] ? __try_to_del_timer_sync+0x2e8/0x440 [ 211.417041][ T8] ? addrconf_cleanup+0x150/0x150 [ 211.417106][ T8] ? __kasan_check_write+0x18/0x20 [ 211.417158][ T8] ? mutex_unlock+0x90/0x240 [ 211.417228][ T8] ? __cfi_mutex_unlock+0x10/0x10 [ 211.417308][ T8] ? __cfi_device_cmp+0x10/0x10 [ 211.417379][ T8] ? masq_device_event+0xe0/0xe0 [ 211.417449][ T8] addrconf_notify+0x17a/0xeb0 [ 211.417510][ T8] ? ip6mr_device_event+0x1ed/0x230 [ 211.417560][ T8] ? __cfi_addrconf_notify+0x10/0x10 [ 211.417639][ T8] notifier_call_chain+0x106/0x2b0 [ 211.417702][ T8] raw_notifier_call_chain+0x31/0x40 [ 211.417766][ T8] dev_close_many+0x332/0x4f0 [ 211.417812][ T8] ? __cfi_dev_close_many+0x10/0x10 [ 211.417865][ T8] ? __kasan_check_read+0x15/0x20 [ 211.417909][ T8] unregister_netdevice_many_notify+0x4bd/0x1be0 [ 211.417976][ T8] ? __cfi_unregister_netdevice_many_notify+0x10/0x10 [ 211.418040][ T8] ? __kasan_check_read+0x15/0x20 [ 211.418095][ T8] ? __kasan_check_read+0x15/0x20 [ 211.418144][ T8] ? unregister_netdevice_queue+0x18a/0x350 [ 211.418208][ T8] default_device_exit_batch+0x845/0x8d0 [ 211.418316][ T8] ? mutex_lock+0x97/0x1d0 [ 211.418404][ T8] ? __cfi_mutex_lock+0x10/0x10 [ 211.418472][ T8] ? __cfi_default_device_exit_batch+0x10/0x10 [ 211.418546][ T8] ? rtnl_unlock+0x12/0x20 [ 211.418609][ T8] ? __cfi_default_device_exit_batch+0x10/0x10 [ 211.418682][ T8] cleanup_net+0x744/0xc90 [ 211.418740][ T8] ? __cfi_cleanup_net+0x10/0x10 [ 211.418795][ T8] ? __set_cpus_allowed_ptr+0x1d6/0x2c0 [ 211.418849][ T8] ? __cfi___set_cpus_allowed_ptr+0x10/0x10 [ 211.418902][ T8] ? kick_pool+0xad/0x540 [ 211.418955][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 211.419011][ T8] process_scheduled_works+0x7f7/0x1060 [ 211.419073][ T8] rescuer_thread+0xce5/0x1620 [ 211.419126][ T8] ? _raw_spin_lock_irqsave+0xc1/0x160 [ 211.419192][ T8] kthread+0x2c7/0x360 [ 211.419252][ T8] ? __cfi_rescuer_thread+0x10/0x10 [ 211.419302][ T8] ? __cfi_kthread+0x10/0x10 [ 211.419356][ T8] ret_from_fork+0x67/0xa0 [ 211.419425][ T8] ? __cfi_kthread+0x10/0x10 [ 211.419478][ T8] ret_from_fork_asm+0x1a/0x30 [ 211.419524][ T8] [ 212.369656][ T8] FAULT_INJECTION: forcing a failure. [ 212.369656][ T8] name failslab, interval 1, probability 100, space 0, times -1 [ 212.371331][ T31] FAULT_INJECTION: forcing a failure. [ 212.371331][ T31] name failslab, interval 1, probability 100, space 0, times -1 [ 212.376386][ T8] CPU: 0 UID: 0 PID: 8 Comm: kworker/R-netns Not tainted syzkaller #0 45964a5c932d45c81e53484b258bbb49855afb35 [ 212.376479][ T8] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 212.376522][ T8] Workqueue: netns cleanup_net [ 212.376612][ T8] Call Trace: [ 212.376646][ T8] [ 212.376667][ T8] __dump_stack+0x21/0x30 [ 212.376751][ T8] dump_stack_lvl+0x140/0x1c0 [ 212.376819][ T8] ? __cfi_dump_stack_lvl+0x10/0x10 [ 212.376894][ T8] dump_stack+0x19/0x20 [ 212.376966][ T8] should_fail_ex+0x3c2/0x510 [ 212.377024][ T8] should_failslab+0xac/0x100 [ 212.377092][ T8] kmem_cache_alloc_node_noprof+0x45/0x420 [ 212.377144][ T8] ? __kasan_check_write+0x18/0x20 [ 212.377200][ T8] ? __alloc_skb+0x10c/0x360 [ 212.377266][ T8] ? __cfi__raw_spin_lock_bh+0x10/0x10 [ 212.377324][ T8] __alloc_skb+0x10c/0x360 [ 212.377397][ T8] inet6_rt_notify+0x351/0x520 [ 212.377455][ T8] ? __cfi_inet6_rt_notify+0x10/0x10 [ 212.377510][ T8] ? call_fib_notifiers+0xa4/0xc0 [ 212.377582][ T8] fib6_del+0xba0/0xf50 [ 212.377654][ T8] ? __cfi_fib6_del+0x10/0x10 [ 212.377712][ T8] ? stack_trace_save+0xaa/0x100 [ 212.377776][ T8] ? fib6_ifdown+0x2f1/0x4f0 [ 212.377826][ T8] fib6_clean_node+0x2b9/0x560 [ 212.377909][ T8] ? __cfi_fib6_clean_node+0x10/0x10 [ 212.377997][ T8] ? preempt_schedule_common+0x2d/0x60 [ 212.378061][ T8] ? preempt_schedule+0xc5/0xe0 [ 212.378115][ T8] ? __cfi_preempt_schedule+0x10/0x10 [ 212.378171][ T8] fib6_walk_continue+0x518/0x740 [ 212.378242][ T8] __fib6_clean_all+0x2a2/0x440 [ 212.378306][ T8] ? __cfi_fib6_ifdown+0x10/0x10 [ 212.378355][ T8] ? fib6_clean_all+0x50/0x50 [ 212.378413][ T8] ? __cfi_fib6_clean_node+0x10/0x10 [ 212.378477][ T8] ? __cfi_fib6_ifdown+0x10/0x10 [ 212.378528][ T8] ? __cfi_fib6_ifdown+0x10/0x10 [ 212.378574][ T8] fib6_clean_all+0x2e/0x50 [ 212.378645][ T8] rt6_disable_ip+0x124/0x810 [ 212.378695][ T8] ? __cfi__raw_spin_lock_irqsave+0x10/0x10 [ 212.378753][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 212.378812][ T8] ? __cfi_rt6_disable_ip+0x10/0x10 [ 212.378859][ T8] ? pneigh_queue_purge+0x570/0x5d0 [ 212.378927][ T8] ? __kasan_check_read+0x15/0x20 [ 212.378974][ T8] addrconf_ifdown+0x161/0x1970 [ 212.379027][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 212.379081][ T8] ? __try_to_del_timer_sync+0x2e8/0x440 [ 212.379136][ T8] ? addrconf_cleanup+0x150/0x150 [ 212.379184][ T8] ? __kasan_check_write+0x18/0x20 [ 212.379223][ T8] ? mutex_unlock+0x90/0x240 [ 212.379297][ T8] ? __cfi_mutex_unlock+0x10/0x10 [ 212.379381][ T8] ? __cfi_device_cmp+0x10/0x10 [ 212.379439][ T8] ? masq_device_event+0xe0/0xe0 [ 212.379501][ T8] addrconf_notify+0x17a/0xeb0 [ 212.379555][ T8] ? ip6mr_device_event+0x1ed/0x230 [ 212.379607][ T8] ? __cfi_addrconf_notify+0x10/0x10 [ 212.379669][ T8] notifier_call_chain+0x106/0x2b0 [ 212.379716][ T8] raw_notifier_call_chain+0x31/0x40 [ 212.379767][ T8] dev_close_many+0x332/0x4f0 [ 212.379818][ T8] ? __cfi_dev_close_many+0x10/0x10 [ 212.379866][ T8] ? __kasan_check_read+0x15/0x20 [ 212.379915][ T8] unregister_netdevice_many_notify+0x4bd/0x1be0 [ 212.379987][ T8] ? __cfi_unregister_netdevice_many_notify+0x10/0x10 [ 212.380054][ T8] ? __kasan_check_read+0x15/0x20 [ 212.380100][ T8] ? __kasan_check_read+0x15/0x20 [ 212.380155][ T8] ? unregister_netdevice_queue+0x18a/0x350 [ 212.380221][ T8] default_device_exit_batch+0x845/0x8d0 [ 212.380301][ T8] ? mutex_lock+0x97/0x1d0 [ 212.380362][ T8] ? __cfi_mutex_lock+0x10/0x10 [ 212.380424][ T8] ? __cfi_default_device_exit_batch+0x10/0x10 [ 212.380504][ T8] ? rtnl_unlock+0x12/0x20 [ 212.380568][ T8] ? __cfi_default_device_exit_batch+0x10/0x10 [ 212.380647][ T8] cleanup_net+0x744/0xc90 [ 212.380706][ T8] ? __cfi_cleanup_net+0x10/0x10 [ 212.380762][ T8] ? __set_cpus_allowed_ptr+0x1d6/0x2c0 [ 212.380820][ T8] ? __cfi___set_cpus_allowed_ptr+0x10/0x10 [ 212.380841][ T8] ? kick_pool+0xad/0x540 [ 212.380910][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 212.380982][ T8] process_scheduled_works+0x7f7/0x1060 [ 212.381045][ T8] rescuer_thread+0xce5/0x1620 [ 212.381095][ T8] ? _raw_spin_lock_irqsave+0xc1/0x160 [ 212.381153][ T8] kthread+0x2c7/0x360 [ 212.381207][ T8] ? __cfi_rescuer_thread+0x10/0x10 [ 212.381262][ T8] ? __cfi_kthread+0x10/0x10 [ 212.381315][ T8] ret_from_fork+0x67/0xa0 [ 212.381385][ T8] ? __cfi_kthread+0x10/0x10 [ 212.381440][ T8] ret_from_fork_asm+0x1a/0x30 [ 212.381488][ T8] [ 212.381576][ T8] FAULT_INJECTION: forcing a failure. [ 212.381576][ T8] name failslab, interval 1, probability 100, space 0, times -1 [ 212.385856][ T31] CPU: 1 UID: 0 PID: 31 Comm: kworker/1:0 Not tainted syzkaller #0 45964a5c932d45c81e53484b258bbb49855afb35 [ 212.385931][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 212.385965][ T31] Workqueue: 0x0 (events) [ 212.386031][ T31] Call Trace: [ 212.386043][ T31] [ 212.386060][ T31] __dump_stack+0x21/0x30 [ 212.386139][ T31] dump_stack_lvl+0x140/0x1c0 [ 212.386209][ T31] ? __cfi_dump_stack_lvl+0x10/0x10 [ 212.386275][ T31] ? ida_alloc_range+0xa44/0xa80 [ 212.386328][ T31] ? __kasan_check_write+0x18/0x20 [ 212.386375][ T31] dump_stack+0x19/0x20 [ 212.386450][ T31] should_fail_ex+0x3c2/0x510 [ 212.386502][ T31] should_failslab+0xac/0x100 [ 212.386562][ T31] __kmalloc_cache_node_noprof+0x46/0x430 [ 212.386617][ T31] ? create_worker+0x11b/0x920 [ 212.386670][ T31] create_worker+0x11b/0x920 [ 212.386740][ T31] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 212.386793][ T31] ? workqueue_prepare_cpu+0x190/0x190 [ 212.386862][ T31] ? __cfi_process_timeout+0x10/0x10 [ 212.386924][ T31] worker_thread+0x471/0x13f0 [ 212.386985][ T31] kthread+0x2c7/0x360 [ 212.387038][ T31] ? __cfi_worker_thread+0x10/0x10 [ 212.387091][ T31] ? __cfi_kthread+0x10/0x10 [ 212.387156][ T31] ret_from_fork+0x67/0xa0 [ 212.387219][ T31] ? __cfi_kthread+0x10/0x10 [ 212.387277][ T31] ret_from_fork_asm+0x1a/0x30 [ 212.387329][ T31] [ 212.387463][ T45] FAULT_INJECTION: forcing a failure. [ 212.387463][ T45] name failslab, interval 1, probability 100, space 0, times -1 [ 212.390807][ T8] CPU: 0 UID: 0 PID: 8 Comm: kworker/R-netns Not tainted syzkaller #0 45964a5c932d45c81e53484b258bbb49855afb35 [ 212.390892][ T8] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 212.390926][ T8] Workqueue: netns cleanup_net [ 212.390995][ T8] Call Trace: [ 212.391013][ T8] [ 212.391032][ T8] __dump_stack+0x21/0x30 [ 212.391094][ T8] dump_stack_lvl+0x140/0x1c0 [ 212.391142][ T8] ? __cfi_dump_stack_lvl+0x10/0x10 [ 212.391216][ T8] dump_stack+0x19/0x20 [ 212.391277][ T8] should_fail_ex+0x3c2/0x510 [ 212.391332][ T8] should_failslab+0xac/0x100 [ 212.391394][ T8] kmem_cache_alloc_node_noprof+0x45/0x420 [ 212.391446][ T8] ? __kasan_check_write+0x18/0x20 [ 212.391497][ T8] ? __alloc_skb+0x10c/0x360 [ 212.391552][ T8] ? __cfi__raw_spin_lock_bh+0x10/0x10 [ 212.391617][ T8] __alloc_skb+0x10c/0x360 [ 212.391720][ T8] inet6_rt_notify+0x351/0x520 [ 212.391769][ T8] ? fib6_purge_rt+0x6f8/0x7b0 [ 212.391851][ T8] ? __cfi_inet6_rt_notify+0x10/0x10 [ 212.391912][ T8] ? call_fib_notifiers+0xa4/0xc0 [ 212.391973][ T8] fib6_del+0xba0/0xf50 [ 212.392055][ T8] ? __cfi_fib6_del+0x10/0x10 [ 212.392137][ T8] ? stack_trace_save+0xaa/0x100 [ 212.392210][ T8] ? fib6_ifdown+0x2f1/0x4f0 [ 212.392279][ T8] fib6_clean_node+0x2b9/0x560 [ 212.392395][ T8] ? __cfi_fib6_clean_node+0x10/0x10 [ 212.392477][ T8] ? preempt_schedule_common+0x2d/0x60 [ 212.392551][ T8] ? preempt_schedule+0xc5/0xe0 [ 212.392623][ T8] ? __cfi_preempt_schedule+0x10/0x10 [ 212.392706][ T8] fib6_walk_continue+0x518/0x740 [ 212.392812][ T8] __fib6_clean_all+0x2a2/0x440 [ 212.392899][ T8] ? __cfi_fib6_ifdown+0x10/0x10 [ 212.392945][ T8] ? fib6_clean_all+0x50/0x50 [ 212.393008][ T8] ? __cfi_fib6_clean_node+0x10/0x10 [ 212.393077][ T8] ? __cfi_fib6_ifdown+0x10/0x10 [ 212.393130][ T8] ? __cfi_fib6_ifdown+0x10/0x10 [ 212.393164][ T8] fib6_clean_all+0x2e/0x50 [ 212.393226][ T8] rt6_disable_ip+0x124/0x810 [ 212.393276][ T8] ? __cfi__raw_spin_lock_irqsave+0x10/0x10 [ 212.393329][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 212.393383][ T8] ? __cfi_rt6_disable_ip+0x10/0x10 [ 212.393428][ T8] ? pneigh_queue_purge+0x570/0x5d0 [ 212.393495][ T8] ? __kasan_check_read+0x15/0x20 [ 212.393542][ T8] addrconf_ifdown+0x161/0x1970 [ 212.393588][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 212.393670][ T8] ? __try_to_del_timer_sync+0x2e8/0x440 [ 212.393754][ T8] ? addrconf_cleanup+0x150/0x150 [ 212.393800][ T8] ? __kasan_check_write+0x18/0x20 [ 212.393856][ T8] ? mutex_unlock+0x90/0x240 [ 212.393908][ T8] ? __cfi_mutex_unlock+0x10/0x10 [ 212.393984][ T8] ? __cfi_device_cmp+0x10/0x10 [ 212.394038][ T8] ? masq_device_event+0xe0/0xe0 [ 212.394100][ T8] addrconf_notify+0x17a/0xeb0 [ 212.394163][ T8] ? ip6mr_device_event+0x1ed/0x230 [ 212.394207][ T8] ? __cfi_addrconf_notify+0x10/0x10 [ 212.394261][ T8] notifier_call_chain+0x106/0x2b0 [ 212.394311][ T8] raw_notifier_call_chain+0x31/0x40 [ 212.394356][ T8] dev_close_many+0x332/0x4f0 [ 212.394409][ T8] ? __cfi_dev_close_many+0x10/0x10 [ 212.394454][ T8] ? __kasan_check_read+0x15/0x20 [ 212.394505][ T8] unregister_netdevice_many_notify+0x4bd/0x1be0 [ 212.394577][ T8] ? __cfi_unregister_netdevice_many_notify+0x10/0x10 [ 212.394649][ T8] ? __kasan_check_read+0x15/0x20 [ 212.394701][ T8] ? __kasan_check_read+0x15/0x20 [ 212.394747][ T8] ? unregister_netdevice_queue+0x18a/0x350 [ 212.394816][ T8] default_device_exit_batch+0x845/0x8d0 [ 212.394893][ T8] ? mutex_lock+0x97/0x1d0 [ 212.394945][ T8] ? __cfi_mutex_lock+0x10/0x10 [ 212.395010][ T8] ? __cfi_default_device_exit_batch+0x10/0x10 [ 212.395124][ T8] ? rtnl_unlock+0x12/0x20 [ 212.395189][ T8] ? __cfi_default_device_exit_batch+0x10/0x10 [ 212.395269][ T8] cleanup_net+0x744/0xc90 [ 212.395326][ T8] ? __cfi_cleanup_net+0x10/0x10 [ 212.395380][ T8] ? __set_cpus_allowed_ptr+0x1d6/0x2c0 [ 212.395433][ T8] ? __cfi___set_cpus_allowed_ptr+0x10/0x10 [ 212.395480][ T8] ? kick_pool+0xad/0x540 [ 212.395533][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 212.395593][ T8] process_scheduled_works+0x7f7/0x1060 [ 212.395662][ T8] rescuer_thread+0xce5/0x1620 [ 212.395718][ T8] ? _raw_spin_lock_irqsave+0xc1/0x160 [ 212.395762][ T8] kthread+0x2c7/0x360 [ 212.395840][ T8] ? __cfi_rescuer_thread+0x10/0x10 [ 212.395919][ T8] ? __cfi_kthread+0x10/0x10 [ 212.395975][ T8] ret_from_fork+0x67/0xa0 [ 212.396044][ T8] ? __cfi_kthread+0x10/0x10 [ 212.396097][ T8] ret_from_fork_asm+0x1a/0x30 [ 212.396147][ T8] [ 226.990441][ T45] CPU: 1 UID: 0 PID: 45 Comm: kworker/1:1 Not tainted syzkaller #0 45964a5c932d45c81e53484b258bbb49855afb35 [ 226.990465][ T45] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 226.990477][ T45] Workqueue: events_power_efficient neigh_periodic_work [ 226.990510][ T45] Call Trace: [ 226.990516][ T45] [ 226.990523][ T45] __dump_stack+0x21/0x30 [ 226.990547][ T45] dump_stack_lvl+0x140/0x1c0 [ 226.990568][ T45] ? __cfi_dump_stack_lvl+0x10/0x10 [ 226.990590][ T45] ? __sched_text_start+0x10/0x10 [ 226.990609][ T45] ? llist_del_first+0x114/0x180 [ 226.990625][ T45] dump_stack+0x19/0x20 [ 226.990645][ T45] should_fail_ex+0x3c2/0x510 [ 226.990663][ T45] should_failslab+0xac/0x100 [ 226.990682][ T45] kmem_cache_alloc_node_noprof+0x45/0x420 [ 226.990699][ T45] ? __alloc_skb+0x10c/0x360 [ 226.990720][ T45] __alloc_skb+0x10c/0x360 [ 226.990740][ T45] __neigh_notify+0x83/0x140 [ 226.990761][ T45] neigh_cleanup_and_release+0x2c/0x1a0 [ 226.990781][ T45] neigh_periodic_work+0x9b7/0xbb0 [ 226.990802][ T45] process_scheduled_works+0x7f7/0x1060 [ 226.990822][ T45] worker_thread+0xc99/0x13f0 [ 226.990840][ T45] kthread+0x2c7/0x360 [ 226.990857][ T45] ? __cfi_worker_thread+0x10/0x10 [ 226.990872][ T45] ? __cfi_kthread+0x10/0x10 [ 226.990888][ T45] ret_from_fork+0x67/0xa0 [ 226.990910][ T45] ? __cfi_kthread+0x10/0x10 [ 226.990927][ T45] ret_from_fork_asm+0x1a/0x30 [ 226.990942][ T45] [ 226.990997][ C1] FAULT_INJECTION: forcing a failure. [ 226.990997][ C1] name failslab, interval 1, probability 100, space 0, times -1 [ 226.991058][ C0] FAULT_INJECTION: forcing a failure. [ 226.991058][ C0] name failslab, interval 1, probability 100, space 0, times -1 [ 227.002491][ C1] CPU: 1 UID: 0 PID: 45 Comm: kworker/1:1 Not tainted syzkaller #0 45964a5c932d45c81e53484b258bbb49855afb35 [ 227.002582][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 227.002642][ C1] Workqueue: events_power_efficient neigh_periodic_work [ 227.002751][ C1] Call Trace: [ 227.002773][ C1] [ 227.002799][ C1] __dump_stack+0x21/0x30 [ 227.002885][ C1] dump_stack_lvl+0x140/0x1c0 [ 227.002957][ C1] ? __cfi_dump_stack_lvl+0x10/0x10 [ 227.003038][ C1] ? __cfi_check_preempt_wakeup_fair+0x10/0x10 [ 227.003114][ C1] dump_stack+0x19/0x20 [ 227.003179][ C1] should_fail_ex+0x3c2/0x510 [ 227.003234][ C1] should_failslab+0xac/0x100 [ 227.003297][ C1] kmem_cache_alloc_node_noprof+0x45/0x420 [ 227.003347][ C1] ? try_to_wake_up+0x111a/0x1fd0 [ 227.003408][ C1] ? __alloc_skb+0x10c/0x360 [ 227.003468][ C1] __alloc_skb+0x10c/0x360 [ 227.003528][ C1] wg_packet_send_keepalive+0x66/0x1d0 [ 227.003600][ C1] ? wg_expired_send_persistent_keepalive+0x48/0x80 [ 227.003657][ C1] wg_expired_send_persistent_keepalive+0x57/0x80 [ 227.003720][ C1] ? __cfi_wg_expired_send_persistent_keepalive+0x10/0x10 [ 227.003784][ C1] call_timer_fn+0x4c/0x300 [ 227.003849][ C1] ? __cfi_wg_expired_send_persistent_keepalive+0x10/0x10 [ 227.003912][ C1] __run_timer_base+0x6c0/0x9b0 [ 227.004004][ C1] ? timer_expire_remote+0xa0/0xa0 [ 227.004082][ C1] ? sched_clock+0x44/0x60 [ 227.004155][ C1] ? irqtime_account_irq+0x51/0x1c0 [ 227.004220][ C1] run_timer_softirq+0x35/0x70 [ 227.004282][ C1] handle_softirqs+0x1aa/0x620 [ 227.004340][ C1] __do_softirq+0xf/0x16 [ 227.004403][ C1] do_softirq+0xb8/0x110 [ 227.004449][ C1] [ 227.004472][ C1] [ 227.004491][ C1] ? __cfi_do_softirq+0x10/0x10 [ 227.004529][ C1] ? neigh_destroy+0x47c/0x5d0 [ 227.004594][ C1] __local_bh_enable_ip+0x74/0x80 [ 227.004641][ C1] _raw_write_unlock_bh+0x33/0x70 [ 227.004706][ C1] neigh_periodic_work+0xa6a/0xbb0 [ 227.004774][ C1] process_scheduled_works+0x7f7/0x1060 [ 227.004839][ C1] worker_thread+0xc99/0x13f0 [ 227.004912][ C1] kthread+0x2c7/0x360 [ 227.004969][ C1] ? __cfi_worker_thread+0x10/0x10 [ 227.005012][ C1] ? __cfi_kthread+0x10/0x10 [ 227.005053][ C1] ret_from_fork+0x67/0xa0 [ 227.005115][ C1] ? __cfi_kthread+0x10/0x10 [ 227.005177][ C1] ret_from_fork_asm+0x1a/0x30 [ 227.005230][ C1] [ 227.005260][ C1] FAULT_INJECTION: forcing a failure. [ 227.005260][ C1] name failslab, interval 1, probability 100, space 0, times -1 [ 227.012663][ C0] CPU: 0 UID: 0 PID: 8 Comm: kworker/R-netns Not tainted syzkaller #0 45964a5c932d45c81e53484b258bbb49855afb35 [ 227.012742][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 227.012804][ C0] Workqueue: netns cleanup_net [ 227.012896][ C0] Call Trace: [ 227.012915][ C0] [ 227.012934][ C0] __dump_stack+0x21/0x30 [ 227.012994][ C0] dump_stack_lvl+0x140/0x1c0 [ 227.013058][ C0] ? __cfi_dump_stack_lvl+0x10/0x10 [ 227.013122][ C0] ? enqueue_task+0x1049/0x1100 [ 227.013179][ C0] dump_stack+0x19/0x20 [ 227.013241][ C0] should_fail_ex+0x3c2/0x510 [ 227.013297][ C0] should_failslab+0xac/0x100 [ 227.013353][ C0] kmem_cache_alloc_node_noprof+0x45/0x420 [ 227.013400][ C0] ? __alloc_skb+0x10c/0x360 [ 227.013472][ C0] __alloc_skb+0x10c/0x360 [ 227.013537][ C0] ndisc_send_rs+0x322/0x880 ** 6 printk messages dropped ** [ 227.013942][ C0] __run_timer_base+0x6c0/0x9b0 ** 55 printk messages dropped ** [ 227.017236][ C0] ? _raw_spin_unlock_irqrestore+0x4a/0x70 ** 3 printk messages dropped ** [ 227.017477][ C0] kthread+0x2c7/0x360 ** 91 printk messages dropped ** [ 227.024917][ T286] ? xfd_validate_state+0x68/0x140 ** 50 printk messages dropped ** [ 227.032269][ C1] ? __cfi_do_softirq+0x10/0x10 ** 131 printk messages dropped ** [ 227.050839][ C1] kmem_cache_alloc_node_noprof+0x45/0x420 ** 60 printk messages dropped ** [ 227.055869][ T8] ? _raw_spin_lock_bh+0x96/0x130 ** 31 printk messages dropped ** [ 227.057940][ T8] ? __cfi___set_cpus_allowed_ptr+0x10/0x10 ** 55 printk messages dropped ** [ 227.071818][ T8] rescuer_thread+0xce5/0x1620 [ 227.071889][ T8] ? _raw_spin_lock_irqsave+0xc1/0x160 ** 2 printk messages dropped ** [ 227.072086][ T8] ? __cfi_kthread+0x10/0x10 ** 2 printk messages dropped ** [ 227.072335][ T8] ret_from_fork_asm+0x1a/0x30 ** 93 printk messages dropped ** [ 227.088527][ T37] ? __asan_set_shadow_00+0x12/0x20 ** 21 printk messages dropped ** [ 227.094829][ T8] ? stack_trace_save+0xaa/0x100 ** 92 printk messages dropped ** [ 227.105328][ T8] ? __kasan_check_write+0x18/0x20 ** 83 printk messages dropped ** [ 227.118786][ T8] ? __kasan_check_write+0x18/0x20 ** 84 printk messages dropped ** [ 227.133564][ T8] ? rtnl_unlock+0x12/0x20 ** 55 printk messages dropped ** [ 227.162293][ T8] ? __cfi_fib6_ifdown+0x10/0x10 ** 69 printk messages dropped ** [ 227.182589][ T8] ? __cfi__raw_spin_lock_bh+0x10/0x10 ** 100 printk messages dropped ** [ 227.193563][ T8] fib6_walk_continue+0x518/0x740 ** 72 printk messages dropped ** [ 227.204342][ T8] ? __alloc_skb+0x10c/0x360 ** 104 printk messages dropped ** [ 227.216896][ T8] ? __cfi_fib6_clean_node+0x10/0x10 ** 66 printk messages dropped ** [ 227.248745][ T8] ? __cfi_dump_stack_lvl+0x10/0x10 ** 66 printk messages dropped ** [ 227.260417][ T8] CPU: 0 UID: 0 PID: 8 Comm: kworker/R-netns Not tainted syzkaller #0 45964a5c932d45c81e53484b258bbb49855afb35 ** 48 printk messages dropped ** [ 227.263465][ T8] ? unregister_netdevice_queue+0x18a/0x350 ** 35 printk messages dropped ** [ 227.274519][ T8] should_failslab+0xac/0x100 ** 51 printk messages dropped ** [ 227.277579][ T8] rescuer_thread+0xce5/0x1620 ** 35 printk messages dropped ** [ 227.286997][ T8] ? snmp6_fill_stats+0x9b0/0x9b0 ** 58 printk messages dropped ** [ 227.290668][ T8] dump_stack_lvl+0x140/0x1c0 ** 93 printk messages dropped ** [ 227.301312][ T8] ? snmp6_fill_stats+0x9b0/0x9b0 ** 95 printk messages dropped ** [ 227.312449][ T8] process_scheduled_works+0x7f7/0x1060 ** 60 printk messages dropped ** [ 227.321794][ T8] ? __kasan_check_write+0x18/0x20 ** 87 printk messages dropped ** [ 227.331744][ T8] ? addrconf_cleanup+0x150/0x150 ** 32 printk messages dropped ** [ 227.333929][ T8] ? _raw_spin_lock_irqsave+0xc1/0x160 ** 81 printk messages dropped ** [ 227.357938][ T8] ? rtnl_unlock+0x12/0x20 [ 227.358001][ T8] ? __cfi_default_device_exit_batch+0x10/0x10 [ 227.358083][ T8] cleanup_net+0x744/0xc90 [ 227.358165][ T8] ? __cfi_cleanup_net+0x10/0x10 [ 227.358231][ T8] ? __set_cpus_allowed_ptr+0x1d6/0x2c0 [ 227.358287][ T8] ? __cfi___set_cpus_allowed_ptr+0x10/0x10 [ 227.358338][ T8] ? kick_pool+0xad/0x540 [ 227.358395][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 227.358489][ T8] process_scheduled_works+0x7f7/0x1060 [ 227.358544][ T8] rescuer_thread+0xce5/0x1620 [ 227.358598][ T8] ? _raw_spin_lock_irqsave+0xc1/0x160 [ 227.358660][ T8] kthread+0x2c7/0x360 [ 227.358714][ T8] ? __cfi_rescuer_thread+0x10/0x10 [ 227.358764][ T8] ? __cfi_kthread+0x10/0x10 [ 227.358823][ T8] ret_from_fork+0x67/0xa0 [ 227.358888][ T8] ? __cfi_kthread+0x10/0x10 [ 227.358942][ T8] ret_from_fork_asm+0x1a/0x30 [ 227.359000][ T8] [ 227.359269][ T8] FAULT_INJECTION: forcing a failure. [ 227.359269][ T8] name failslab, interval 1, probability 100, space 0, times -1 [ 227.359396][ T37] kthread+0x2c7/0x360 [ 227.364036][ T8] CPU: 0 UID: 0 PID: 8 Comm: kworker/R-netns Not tainted syzkaller #0 45964a5c932d45c81e53484b258bbb49855afb35 [ 227.364102][ T8] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 227.364148][ T8] Workqueue: netns cleanup_net [ 227.364215][ T8] Call Trace: [ 227.364226][ T8] [ 227.364244][ T8] __dump_stack+0x21/0x30 [ 227.364314][ T8] dump_stack_lvl+0x140/0x1c0 [ 227.364388][ T8] ? __cfi_dump_stack_lvl+0x10/0x10 [ 227.364455][ T8] ? rcu_preempt_deferred_qs_irqrestore+0x6d6/0xa50 [ 227.364547][ T8] dump_stack+0x19/0x20 [ 227.364610][ T8] should_fail_ex+0x3c2/0x510 [ 227.364662][ T8] should_failslab+0xac/0x100 [ 227.364719][ T8] kmem_cache_alloc_node_noprof+0x45/0x420 [ 227.364771][ T8] ? __cfi__raw_spin_lock_irqsave+0x10/0x10 [ 227.364827][ T8] ? __alloc_skb+0x10c/0x360 [ 227.364891][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 227.364946][ T8] __alloc_skb+0x10c/0x360 [ 227.365014][ T8] __ipv6_ifa_notify+0x205/0xee0 [ 227.365071][ T8] ? snmp6_fill_stats+0x9b0/0x9b0 [ 227.365122][ T8] ? timer_delete+0x101/0x3e0 [ 227.365176][ T8] ? __kasan_check_write+0x18/0x20 [ 227.365229][ T8] ? work_grab_pending+0x301/0x830 [ 227.365293][ T8] ? mod_delayed_work_on+0x140/0x140 [ 227.365353][ T8] ? __kasan_check_write+0x18/0x20 [ 227.365399][ T8] ? _raw_spin_lock_bh+0x96/0x130 [ 227.365452][ T8] ? __cfi__raw_spin_lock_bh+0x10/0x10 [ 227.365531][ T8] ? __cancel_work+0x175/0x1f0 [ 227.365618][ T8] addrconf_ifdown+0xe01/0x1970 [ 227.365666][ T8] ? addrconf_cleanup+0x150/0x150 [ 227.365712][ T8] ? __kasan_check_write+0x18/0x20 [ 227.365758][ T8] ? mutex_unlock+0x90/0x240 [ 227.365820][ T8] ? __cfi_mutex_unlock+0x10/0x10 [ 227.365889][ T8] ? __cfi_device_cmp+0x10/0x10 [ 227.365946][ T8] ? masq_device_event+0xe0/0xe0 [ 227.366013][ T8] addrconf_notify+0x17a/0xeb0 [ 227.366061][ T8] ? ip6mr_device_event+0x1ed/0x230 [ 227.366117][ T8] ? __cfi_addrconf_notify+0x10/0x10 [ 227.366172][ T8] notifier_call_chain+0x106/0x2b0 [ 227.366222][ T8] raw_notifier_call_chain+0x31/0x40 [ 227.366270][ T8] dev_close_many+0x332/0x4f0 [ 227.366323][ T8] ? __cfi_dev_close_many+0x10/0x10 [ 227.366367][ T8] ? __kasan_check_read+0x15/0x20 [ 227.366413][ T8] unregister_netdevice_many_notify+0x4bd/0x1be0 [ 227.366487][ T8] ? __cfi_unregister_netdevice_many_notify+0x10/0x10 [ 227.366552][ T8] ? __kasan_check_read+0x15/0x20 [ 227.366603][ T8] ? __kasan_check_read+0x15/0x20 [ 227.366649][ T8] ? unregister_netdevice_queue+0x18a/0x350 [ 227.366720][ T8] default_device_exit_batch+0x845/0x8d0 [ 227.366793][ T8] ? mutex_lock+0x97/0x1d0 [ 227.366858][ T8] ? __cfi_mutex_lock+0x10/0x10 [ 227.366941][ T8] ? __cfi_default_device_exit_batch+0x10/0x10 [ 227.367021][ T8] ? rtnl_unlock+0x12/0x20 [ 227.367098][ T8] ? __cfi_default_device_exit_batch+0x10/0x10 [ 227.367169][ T8] cleanup_net+0x744/0xc90 [ 227.367224][ T8] ? __cfi_cleanup_net+0x10/0x10 [ 227.367276][ T8] ? __set_cpus_allowed_ptr+0x1d6/0x2c0 [ 227.367325][ T8] ? __cfi___set_cpus_allowed_ptr+0x10/0x10 [ 227.367377][ T8] ? kick_pool+0xad/0x540 [ 227.367432][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 227.367497][ T8] process_scheduled_works+0x7f7/0x1060 [ 227.367559][ T8] rescuer_thread+0xce5/0x1620 [ 227.367613][ T8] ? _raw_spin_lock_irqsave+0xc1/0x160 [ 227.367677][ T8] kthread+0x2c7/0x360 [ 227.367732][ T8] ? __cfi_rescuer_thread+0x10/0x10 [ 227.367785][ T8] ? __cfi_kthread+0x10/0x10 [ 227.367839][ T8] ret_from_fork+0x67/0xa0 [ 227.367906][ T8] ? __cfi_kthread+0x10/0x10 [ 227.367959][ T8] ret_from_fork_asm+0x1a/0x30 [ 227.368001][ T8] [ 227.368226][ T39] FAULT_INJECTION: forcing a failure. [ 227.368226][ T39] name failslab, interval 1, probability 100, space 0, times -1 [ 227.373201][ T37] ? __cfi_worker_thread+0x10/0x10 [ 227.377840][ T39] CPU: 0 UID: 0 PID: 39 Comm: kworker/R-write Not tainted syzkaller #0 45964a5c932d45c81e53484b258bbb49855afb35 [ 227.377939][ T39] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 227.377983][ T39] Workqueue: writeback wb_workfn (flush-8:0) [ 227.378049][ T39] Call Trace: [ 227.378060][ T39] [ 227.378083][ T39] __dump_stack+0x21/0x30 [ 227.378148][ T39] dump_stack_lvl+0x140/0x1c0 [ 227.378225][ T39] ? __cfi_dump_stack_lvl+0x10/0x10 [ 227.378300][ T39] dump_stack+0x19/0x20 [ 227.378363][ T39] should_fail_ex+0x3c2/0x510 [ 227.378421][ T39] should_failslab+0xac/0x100 [ 227.378486][ T39] kmem_cache_alloc_noprof+0x42/0x410 [ 227.378532][ T39] ? ext4_init_io_end+0x44/0x1b0 [ 227.378603][ T39] ext4_init_io_end+0x44/0x1b0 [ 227.378667][ T39] ext4_do_writepages+0xac8/0x39f0 [ 227.378733][ T39] ? ext4_normal_submit_inode_data_buffers+0x270/0x270 [ 227.378811][ T39] ext4_writepages+0x28c/0x550 [ 227.378865][ T39] ? __cfi_ext4_writepages+0x10/0x10 [ 227.378931][ T39] ? __cfi__raw_spin_lock+0x10/0x10 [ 227.378981][ T39] ? __cfi_ext4_writepages+0x10/0x10 [ 227.379037][ T39] do_writepages+0x3d7/0x7f0 [ 227.379115][ T39] ? __cfi_do_writepages+0x10/0x10 [ 227.379193][ T39] ? __kasan_check_read+0x15/0x20 [ 227.379245][ T39] ? inode_io_list_move_locked+0x3b3/0x450 [ 227.379313][ T39] ? __kasan_check_write+0x18/0x20 [ 227.379377][ T39] ? _raw_spin_lock+0x92/0x120 [ 227.379438][ T39] __writeback_single_inode+0xc8/0xba0 [ 227.379502][ T39] writeback_sb_inodes+0x6a5/0xfb0 [ 227.379564][ T39] ? queue_io+0x690/0x690 [ 227.379635][ T39] ? __kasan_check_read+0x15/0x20 [ 227.379681][ T39] ? queue_io+0x3d9/0x690 [ 227.379736][ T39] __writeback_inodes_wb+0x129/0x280 [ 227.379800][ T39] writeback_inodes_wb+0x198/0x250 [ 227.379853][ T39] ? trace_writeback_pages_written+0x100/0x100 [ 227.379909][ T39] ? kthread_data+0x54/0xc0 [ 227.379961][ T39] wb_workfn+0xea1/0xef0 [ 227.380012][ T39] ? release_user_cpus_ptr+0x60/0x60 [ 227.380066][ T39] ? __kasan_check_write+0x18/0x20 [ 227.380113][ T39] ? _raw_spin_lock+0x92/0x120 [ 227.380173][ T39] ? __cfi_wb_workfn+0x10/0x10 [ 227.380227][ T39] ? _raw_spin_unlock+0x45/0x60 [ 227.380284][ T39] ? __set_cpus_allowed_ptr+0x1d6/0x2c0 [ 227.380336][ T39] ? __cfi___set_cpus_allowed_ptr+0x10/0x10 [ 227.380391][ T39] ? kick_pool+0xad/0x540 [ 227.380445][ T39] process_scheduled_works+0x7f7/0x1060 [ 227.380508][ T39] rescuer_thread+0xce5/0x1620 [ 227.380563][ T39] ? _raw_spin_lock_irqsave+0xc1/0x160 [ 227.380626][ T39] kthread+0x2c7/0x360 [ 227.380706][ T39] ? __cfi_rescuer_thread+0x10/0x10 [ 227.380778][ T39] ? __cfi_kthread+0x10/0x10 [ 227.380834][ T39] ret_from_fork+0x67/0xa0 [ 227.380900][ T39] ? __cfi_kthread+0x10/0x10 [ 227.380953][ T39] ret_from_fork_asm+0x1a/0x30 [ 227.381008][ T39] [ 227.381052][ T39] FAULT_INJECTION: forcing a failure. [ 227.381052][ T39] name failslab, interval 1, probability 100, space 0, times -1 [ 227.382208][ T37] ? __cfi_kthread+0x10/0x10 [ 227.386791][ T39] CPU: 0 UID: 0 PID: 39 Comm: kworker/R-write Not tainted syzkaller #0 45964a5c932d45c81e53484b258bbb49855afb35 [ 227.386857][ T39] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 227.386902][ T39] Workqueue: writeback wb_workfn (flush-8:0) [ 227.386966][ T39] Call Trace: [ 227.386978][ T39] [ 227.386995][ T39] __dump_stack+0x21/0x30 [ 227.387060][ T39] dump_stack_lvl+0x140/0x1c0 [ 227.387125][ T39] ? __cfi_dump_stack_lvl+0x10/0x10 [ 227.387196][ T39] dump_stack+0x19/0x20 [ 227.387257][ T39] should_fail_ex+0x3c2/0x510 [ 227.387295][ T39] should_failslab+0xac/0x100 [ 227.387356][ T39] kmem_cache_alloc_noprof+0x42/0x410 [ 227.387402][ T39] ? ext4_init_io_end+0x44/0x1b0 [ 227.387475][ T39] ext4_init_io_end+0x44/0x1b0 [ 227.387546][ T39] ext4_do_writepages+0xac8/0x39f0 [ 227.387609][ T39] ? ext4_normal_submit_inode_data_buffers+0x270/0x270 [ 227.387680][ T39] ext4_writepages+0x28c/0x550 [ 227.387738][ T39] ? __cfi_ext4_writepages+0x10/0x10 [ 227.387800][ T39] ? __cfi__raw_spin_lock+0x10/0x10 [ 227.387853][ T39] ? __cfi_ext4_writepages+0x10/0x10 [ 227.387915][ T39] do_writepages+0x3d7/0x7f0 [ 227.387991][ T39] ? __cfi_do_writepages+0x10/0x10 [ 227.388055][ T39] ? __kasan_check_read+0x15/0x20 [ 227.388101][ T39] ? inode_io_list_move_locked+0x3b3/0x450 [ 227.388155][ T39] ? __kasan_check_write+0x18/0x20 [ 227.388199][ T39] ? _raw_spin_lock+0x92/0x120 [ 227.388258][ T39] __writeback_single_inode+0xc8/0xba0 [ 227.388344][ T39] ? locked_inode_to_wb_and_lock_list+0x1ff/0x2d0 [ 227.388405][ T39] writeback_sb_inodes+0x6a5/0xfb0 [ 227.388469][ T39] ? queue_io+0x690/0x690 [ 227.388528][ T39] ? __kasan_check_read+0x15/0x20 [ 227.388574][ T39] ? queue_io+0x3d9/0x690 [ 227.388622][ T39] __writeback_inodes_wb+0x129/0x280 [ 227.388678][ T39] writeback_inodes_wb+0x198/0x250 [ 227.388729][ T39] ? trace_writeback_pages_written+0x100/0x100 [ 227.388784][ T39] ? kthread_data+0x54/0xc0 [ 227.388837][ T39] wb_workfn+0xea1/0xef0 [ 227.388878][ T39] ? release_user_cpus_ptr+0x60/0x60 [ 227.388932][ T39] ? __kasan_check_write+0x18/0x20 [ 227.388967][ T39] ? _raw_spin_lock+0x92/0x120 [ 227.389022][ T39] ? __cfi_wb_workfn+0x10/0x10 [ 227.389069][ T39] ? _raw_spin_unlock+0x45/0x60 [ 227.389113][ T39] ? __set_cpus_allowed_ptr+0x1d6/0x2c0 [ 227.389165][ T39] ? __cfi___set_cpus_allowed_ptr+0x10/0x10 [ 227.389218][ T39] ? kick_pool+0xad/0x540 [ 227.389280][ T39] process_scheduled_works+0x7f7/0x1060 [ 227.389334][ T39] rescuer_thread+0xce5/0x1620 [ 227.389388][ T39] ? _raw_spin_lock_irqsave+0xc1/0x160 [ 227.389453][ T39] kthread+0x2c7/0x360 [ 227.389525][ T39] ? __cfi_rescuer_thread+0x10/0x10 [ 227.389579][ T39] ? __cfi_kthread+0x10/0x10 [ 227.389633][ T39] ret_from_fork+0x67/0xa0 [ 227.389728][ T39] ? __cfi_kthread+0x10/0x10 [ 227.389786][ T39] ret_from_fork_asm+0x1a/0x30 [ 227.389833][ T39] [ 227.389921][ T8] FAULT_INJECTION: forcing a failure. [ 227.389921][ T8] name failslab, interval 1, probability 100, space 0, times -1 [ 227.391586][ T37] ret_from_fork+0x67/0xa0 [ 227.394562][ T8] CPU: 0 UID: 0 PID: 8 Comm: kworker/R-netns Not tainted syzkaller #0 45964a5c932d45c81e53484b258bbb49855afb35 [ 227.394629][ T8] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 227.394680][ T8] Workqueue: netns cleanup_net [ 227.394749][ T8] Call Trace: [ 227.394755][ T8] [ 227.394766][ T8] __dump_stack+0x21/0x30 [ 227.394819][ T8] dump_stack_lvl+0x140/0x1c0 [ 227.394892][ T8] ? __cfi_dump_stack_lvl+0x10/0x10 [ 227.394955][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 227.395001][ T8] ? kvfree_call_rcu+0x40e/0x730 [ 227.395065][ T8] dump_stack+0x19/0x20 [ 227.395133][ T8] should_fail_ex+0x3c2/0x510 [ 227.395186][ T8] should_failslab+0xac/0x100 [ 227.395242][ T8] __kmalloc_cache_noprof+0x41/0x470 [ 227.395290][ T8] ? __dev_set_rx_mode+0x74/0x280 [ 227.395343][ T8] ? igmp6_group_dropped+0x3b7/0xc10 [ 227.395384][ T8] ? _raw_spin_unlock_bh+0x54/0x60 [ 227.395442][ T8] igmp6_group_dropped+0x3b7/0xc10 [ 227.395522][ T8] ? __ipv6_dev_mc_inc+0xa30/0xa30 [ 227.395571][ T8] ? mutex_lock+0x97/0x1d0 [ 227.395641][ T8] ? __kasan_check_write+0x18/0x20 [ 227.395697][ T8] ? __kasan_check_read+0x15/0x20 [ 227.395748][ T8] __ipv6_dev_mc_dec+0x29f/0x4c0 [ 227.395796][ T8] __ipv6_ifa_notify+0x7b1/0xee0 [ 227.395856][ T8] ? snmp6_fill_stats+0x9b0/0x9b0 [ 227.395919][ T8] ? __kasan_check_write+0x18/0x20 [ 227.395957][ T8] ? work_grab_pending+0x301/0x830 [ 227.396027][ T8] ? mod_delayed_work_on+0x140/0x140 [ 227.396109][ T8] ? __kasan_check_write+0x18/0x20 [ 227.396165][ T8] ? _raw_spin_lock_bh+0x96/0x130 [ 227.396224][ T8] ? __cfi__raw_spin_lock_bh+0x10/0x10 [ 227.396281][ T8] ? __cancel_work+0x175/0x1f0 [ 227.396354][ T8] addrconf_ifdown+0xe01/0x1970 [ 227.396405][ T8] ? addrconf_cleanup+0x150/0x150 [ 227.396460][ T8] ? __kasan_check_write+0x18/0x20 [ 227.396513][ T8] ? mutex_unlock+0x90/0x240 [ 227.396585][ T8] ? __cfi_mutex_unlock+0x10/0x10 [ 227.396654][ T8] ? __cfi_device_cmp+0x10/0x10 [ 227.396720][ T8] ? masq_device_event+0xe0/0xe0 [ 227.396786][ T8] addrconf_notify+0x17a/0xeb0 [ 227.396841][ T8] ? ip6mr_device_event+0x1ed/0x230 [ 227.396890][ T8] ? __cfi_addrconf_notify+0x10/0x10 [ 227.396953][ T8] notifier_call_chain+0x106/0x2b0 [ 227.396997][ T8] raw_notifier_call_chain+0x31/0x40 [ 227.397046][ T8] dev_close_many+0x332/0x4f0 [ 227.397104][ T8] ? __cfi_dev_close_many+0x10/0x10 [ 227.397171][ T8] ? __kasan_check_read+0x15/0x20 [ 227.397216][ T8] unregister_netdevice_many_notify+0x4bd/0x1be0 [ 227.397287][ T8] ? __cfi_unregister_netdevice_many_notify+0x10/0x10 [ 227.397351][ T8] ? __kasan_check_read+0x15/0x20 [ 227.397400][ T8] ? __kasan_check_read+0x15/0x20 [ 227.397447][ T8] ? unregister_netdevice_queue+0x18a/0x350 [ 227.397540][ T8] default_device_exit_batch+0x845/0x8d0 [ 227.397612][ T8] ? mutex_lock+0x97/0x1d0 [ 227.397668][ T8] ? __cfi_mutex_lock+0x10/0x10 [ 227.397729][ T8] ? __cfi_default_device_exit_batch+0x10/0x10 [ 227.397791][ T8] ? rtnl_unlock+0x12/0x20 [ 227.397862][ T8] ? __cfi_default_device_exit_batch+0x10/0x10 [ 227.397928][ T8] cleanup_net+0x744/0xc90 [ 227.397979][ T8] ? __cfi_cleanup_net+0x10/0x10 [ 227.398055][ T8] ? __set_cpus_allowed_ptr+0x1d6/0x2c0 [ 227.398110][ T8] ? __cfi___set_cpus_allowed_ptr+0x10/0x10 [ 227.398166][ T8] ? kick_pool+0xad/0x540 [ 227.398232][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 227.398288][ T8] process_scheduled_works+0x7f7/0x1060 [ 227.398348][ T8] rescuer_thread+0xce5/0x1620 [ 227.398407][ T8] ? _raw_spin_lock_irqsave+0xc1/0x160 [ 227.398472][ T8] kthread+0x2c7/0x360 [ 227.398533][ T8] ? __cfi_rescuer_thread+0x10/0x10 [ 227.398586][ T8] ? __cfi_kthread+0x10/0x10 [ 227.398639][ T8] ret_from_fork+0x67/0xa0 [ 227.398702][ T8] ? __cfi_kthread+0x10/0x10 [ 227.398755][ T8] ret_from_fork_asm+0x1a/0x30 [ 227.398813][ T8] [ 227.398915][ T39] FAULT_INJECTION: forcing a failure. [ 227.398915][ T39] name failslab, interval 1, probability 100, space 0, times -1 [ 227.407405][ T37] ? __cfi_kthread+0x10/0x10 [ 227.419247][ T8] FAULT_INJECTION: forcing a failure. [ 227.419247][ T8] name failslab, interval 1, probability 100, space 0, times -1 [ 227.429179][ T37] ret_from_fork_asm+0x1a/0x30 [ 227.433944][ T310] CPU: 0 UID: 0 PID: 310 Comm: kworker/u8:4 Not tainted syzkaller #0 45964a5c932d45c81e53484b258bbb49855afb35 [ 227.434036][ T310] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 227.434070][ T310] Workqueue: 0x0 (kvfree_rcu_reclaim) [ 227.434134][ T310] Call Trace: [ 227.434151][ T310] [ 227.434171][ T310] __dump_stack+0x21/0x30 [ 227.434239][ T310] dump_stack_lvl+0x140/0x1c0 [ 227.434315][ T310] ? __cfi_dump_stack_lvl+0x10/0x10 [ 227.434389][ T310] ? ida_alloc_range+0xa44/0xa80 [ 227.434436][ T310] ? finish_task_switch+0x139/0x770 [ 227.434506][ T310] dump_stack+0x19/0x20 [ 227.434569][ T310] should_fail_ex+0x3c2/0x510 [ 227.434624][ T310] should_failslab+0xac/0x100 [ 227.434685][ T310] __kmalloc_cache_node_noprof+0x46/0x430 [ 227.434753][ T310] ? create_worker+0x11b/0x920 [ 227.434827][ T310] ? __kasan_check_write+0x18/0x20 [ 227.434882][ T310] ? _raw_spin_lock+0x92/0x120 [ 227.434935][ T310] create_worker+0x11b/0x920 [ 227.435004][ T310] ? enqueue_timer+0x1c5/0x4b0 [ 227.435069][ T310] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 227.435124][ T310] ? workqueue_prepare_cpu+0x190/0x190 [ 227.435196][ T310] ? __mod_timer+0x881/0xd20 [ 227.435252][ T310] worker_thread+0x471/0x13f0 [ 227.435316][ T310] kthread+0x2c7/0x360 [ 227.435371][ T310] ? __cfi_worker_thread+0x10/0x10 [ 227.435439][ T310] ? __cfi_kthread+0x10/0x10 [ 227.435523][ T310] ret_from_fork+0x67/0xa0 [ 227.435588][ T310] ? __cfi_kthread+0x10/0x10 [ 227.435641][ T310] ret_from_fork_asm+0x1a/0x30 [ 227.435688][ T310] [ 227.435741][ T8] CPU: 0 UID: 0 PID: 8 Comm: kworker/R-netns Not tainted syzkaller #0 45964a5c932d45c81e53484b258bbb49855afb35 [ 227.435796][ T8] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 227.435830][ T8] Workqueue: netns cleanup_net [ 227.435888][ T8] Call Trace: [ 227.435905][ T8] [ 227.435918][ T8] __dump_stack+0x21/0x30 [ 227.435984][ T8] dump_stack_lvl+0x140/0x1c0 [ 227.436047][ T8] ? __cfi_dump_stack_lvl+0x10/0x10 [ 227.436111][ T8] ? stack_trace_save+0xaa/0x100 [ 227.436167][ T8] ? stack_depot_save_flags+0x38/0x800 [ 227.436227][ T8] dump_stack+0x19/0x20 [ 227.436286][ T8] should_fail_ex+0x3c2/0x510 [ 227.436340][ T8] should_failslab+0xac/0x100 [ 227.436399][ T8] kmem_cache_alloc_node_noprof+0x45/0x420 [ 227.436448][ T8] ? kthread+0x2c7/0x360 [ 227.436509][ T8] ? ret_from_fork+0x67/0xa0 [ 227.436572][ T8] ? __alloc_skb+0x10c/0x360 [ 227.436635][ T8] __alloc_skb+0x10c/0x360 [ 227.436698][ T8] __ipv6_ifa_notify+0x205/0xee0 [ 227.436751][ T8] ? snmp6_fill_stats+0x9b0/0x9b0 [ 227.436816][ T8] ? _raw_spin_lock+0x92/0x120 [ 227.436863][ T8] ? timer_delete+0x101/0x3e0 [ 227.436917][ T8] ? __cfi__raw_spin_lock+0x10/0x10 [ 227.436965][ T8] ? __kasan_check_write+0x18/0x20 [ 227.437011][ T8] ? work_grab_pending+0x301/0x830 [ 227.437077][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 227.437136][ T8] ? kvfree_call_rcu+0x40e/0x730 [ 227.437189][ T8] ? mod_delayed_work_on+0x140/0x140 [ 227.437234][ T8] ? __kasan_check_write+0x18/0x20 [ 227.437287][ T8] ? _raw_spin_lock_bh+0x96/0x130 [ 227.437357][ T8] ? __cfi__raw_spin_lock_bh+0x10/0x10 [ 227.437426][ T8] ? __cancel_work+0x175/0x1f0 [ 227.437497][ T8] addrconf_ifdown+0xe01/0x1970 [ 227.437550][ T8] ? addrconf_cleanup+0x150/0x150 [ 227.437595][ T8] ? __kasan_check_write+0x18/0x20 [ 227.437641][ T8] ? mutex_unlock+0x90/0x240 [ 227.437702][ T8] ? __cfi_mutex_unlock+0x10/0x10 [ 227.437764][ T8] ? __cfi_device_cmp+0x10/0x10 [ 227.437819][ T8] ? masq_device_event+0xe0/0xe0 [ 227.437882][ T8] addrconf_notify+0x17a/0xeb0 [ 227.437936][ T8] ? ip6mr_device_event+0x1ed/0x230 [ 227.437986][ T8] ? __cfi_addrconf_notify+0x10/0x10 [ 227.438041][ T8] notifier_call_chain+0x106/0x2b0 [ 227.438088][ T8] raw_notifier_call_chain+0x31/0x40 [ 227.438140][ T8] dev_close_many+0x332/0x4f0 [ 227.438188][ T8] ? __cfi_dev_close_many+0x10/0x10 [ 227.438241][ T8] ? __kasan_check_read+0x15/0x20 [ 227.438287][ T8] unregister_netdevice_many_notify+0x4bd/0x1be0 [ 227.438359][ T8] ? __cfi_unregister_netdevice_many_notify+0x10/0x10 [ 227.438423][ T8] ? __kasan_check_read+0x15/0x20 [ 227.438481][ T8] ? __kasan_check_read+0x15/0x20 [ 227.438527][ T8] ? unregister_netdevice_queue+0x18a/0x350 [ 227.438591][ T8] default_device_exit_batch+0x845/0x8d0 [ 227.438670][ T8] ? mutex_lock+0x97/0x1d0 [ 227.438754][ T8] ? __cfi_mutex_lock+0x10/0x10 [ 227.438837][ T8] ? __cfi_default_device_exit_batch+0x10/0x10 [ 227.438915][ T8] ? rtnl_unlock+0x12/0x20 [ 227.438984][ T8] ? __cfi_default_device_exit_batch+0x10/0x10 [ 227.439056][ T8] cleanup_net+0x744/0xc90 [ 227.439118][ T8] ? __cfi_cleanup_net+0x10/0x10 [ 227.439171][ T8] ? __set_cpus_allowed_ptr+0x1d6/0x2c0 [ 227.439225][ T8] ? __cfi___set_cpus_allowed_ptr+0x10/0x10 [ 227.439272][ T8] ? kick_pool+0xad/0x540 [ 227.439327][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 227.439387][ T8] process_scheduled_works+0x7f7/0x1060 [ 227.439441][ T8] rescuer_thread+0xce5/0x1620 [ 227.439504][ T8] ? _raw_spin_lock_irqsave+0xc1/0x160 [ 227.439567][ T8] kthread+0x2c7/0x360 [ 227.439614][ T8] ? __cfi_rescuer_thread+0x10/0x10 [ 227.439674][ T8] ? __cfi_kthread+0x10/0x10 [ 227.439727][ T8] ret_from_fork+0x67/0xa0 [ 227.439789][ T8] ? __cfi_kthread+0x10/0x10 [ 227.439844][ T8] ret_from_fork_asm+0x1a/0x30 [ 227.439891][ T8] [ 227.439985][ T39] CPU: 0 UID: 0 PID: 39 Comm: kworker/R-write Not tainted syzkaller #0 45964a5c932d45c81e53484b258bbb49855afb35 [ 227.440048][ T39] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 227.440080][ T39] Workqueue: writeback wb_workfn (flush-8:0) [ 227.440151][ T39] Call Trace: [ 227.440174][ T39] [ 227.440203][ T39] __dump_stack+0x21/0x30 [ 227.440268][ T39] dump_stack_lvl+0x140/0x1c0 [ 227.440333][ T39] ? __cfi_dump_stack_lvl+0x10/0x10 [ 227.440399][ T39] dump_stack+0x19/0x20 [ 227.440454][ T39] should_fail_ex+0x3c2/0x510 [ 227.440522][ T39] should_failslab+0xac/0x100 [ 227.440578][ T39] kmem_cache_alloc_noprof+0x42/0x410 [ 227.440631][ T39] ? ext4_init_io_end+0x44/0x1b0 [ 227.440695][ T39] ext4_init_io_end+0x44/0x1b0 [ 227.440765][ T39] ext4_do_writepages+0xac8/0x39f0 [ 227.440829][ T39] ? ext4_normal_submit_inode_data_buffers+0x270/0x270 [ 227.440900][ T39] ext4_writepages+0x28c/0x550 [ 227.440968][ T39] ? __cfi_ext4_writepages+0x10/0x10 [ 227.441027][ T39] ? __cfi__raw_spin_lock+0x10/0x10 [ 227.441080][ T39] ? __cfi_ext4_writepages+0x10/0x10 [ 227.441141][ T39] do_writepages+0x3d7/0x7f0 [ 227.441216][ T39] ? __cfi_do_writepages+0x10/0x10 [ 227.441282][ T39] ? __kasan_check_read+0x15/0x20 [ 227.441334][ T39] ? inode_io_list_move_locked+0x3b3/0x450 [ 227.441389][ T39] ? __kasan_check_write+0x18/0x20 [ 227.441442][ T39] ? _raw_spin_lock+0x92/0x120 [ 227.441497][ T39] __writeback_single_inode+0xc8/0xba0 [ 227.441565][ T39] ? locked_inode_to_wb_and_lock_list+0x1ff/0x2d0 [ 227.441664][ T39] writeback_sb_inodes+0x6a5/0xfb0 [ 227.441739][ T39] ? queue_io+0x690/0x690 [ 227.441822][ T39] ? __kasan_check_read+0x15/0x20 [ 227.441877][ T39] ? queue_io+0x3d9/0x690 [ 227.441948][ T39] __writeback_inodes_wb+0x129/0x280 [ 227.442009][ T39] writeback_inodes_wb+0x198/0x250 [ 227.442072][ T39] ? trace_writeback_pages_written+0x100/0x100 [ 227.442144][ T39] ? kthread_data+0x54/0xc0 [ 227.442197][ T39] wb_workfn+0xea1/0xef0 [ 227.442258][ T39] ? release_user_cpus_ptr+0x60/0x60 [ 227.442323][ T39] ? __kasan_check_write+0x18/0x20 [ 227.442379][ T39] ? _raw_spin_lock+0x92/0x120 [ 227.442445][ T39] ? __cfi_wb_workfn+0x10/0x10 [ 227.442510][ T39] ? _raw_spin_unlock+0x45/0x60 [ 227.442583][ T39] ? __set_cpus_allowed_ptr+0x1d6/0x2c0 [ 227.442648][ T39] ? __cfi___set_cpus_allowed_ptr+0x10/0x10 [ 227.442710][ T39] ? kick_pool+0xad/0x540 [ 227.442794][ T39] process_scheduled_works+0x7f7/0x1060 [ 227.442881][ T39] rescuer_thread+0xce5/0x1620 [ 227.442949][ T39] ? _raw_spin_lock_irqsave+0xc1/0x160 [ 227.443027][ T39] kthread+0x2c7/0x360 [ 227.443087][ T39] ? __cfi_rescuer_thread+0x10/0x10 [ 227.443141][ T39] ? __cfi_kthread+0x10/0x10 [ 227.443197][ T39] ret_from_fork+0x67/0xa0 [ 227.443260][ T39] ? __cfi_kthread+0x10/0x10 [ 227.443318][ T39] ret_from_fork_asm+0x1a/0x30 [ 227.443366][ T39] [ 227.443408][ T39] FAULT_INJECTION: forcing a failure. [ 227.443408][ T39] name failslab, interval 1, probability 100, space 0, times -1 [ 227.444400][ T37] [ 227.449212][ T8] FAULT_INJECTION: forcing a failure. [ 227.449212][ T8] name failslab, interval 1, probability 100, space 0, times -1 [ 227.454465][ T37] INFO: task kworker/u8:3:309 blocked for more than 139 seconds. [ 227.459407][ T39] CPU: 0 UID: 0 PID: 39 Comm: kworker/R-write Not tainted syzkaller #0 45964a5c932d45c81e53484b258bbb49855afb35 [ 227.459472][ T39] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 227.459501][ T39] Workqueue: writeback wb_workfn (flush-8:0) [ 227.459563][ T39] Call Trace: [ 227.459581][ T39] [ 227.459599][ T39] __dump_stack+0x21/0x30 [ 227.459670][ T39] dump_stack_lvl+0x140/0x1c0 [ 227.459747][ T39] ? __cfi_dump_stack_lvl+0x10/0x10 [ 227.459820][ T39] dump_stack+0x19/0x20 [ 227.459881][ T39] should_fail_ex+0x3c2/0x510 [ 227.459936][ T39] should_failslab+0xac/0x100 [ 227.459976][ T39] kmem_cache_alloc_noprof+0x42/0x410 [ 227.460029][ T39] ? ext4_init_io_end+0x44/0x1b0 [ 227.460101][ T39] ext4_init_io_end+0x44/0x1b0 [ 227.460156][ T39] ext4_do_writepages+0xac8/0x39f0 [ 227.460216][ T39] ? ext4_normal_submit_inode_data_buffers+0x270/0x270 [ 227.460295][ T39] ext4_writepages+0x28c/0x550 [ 227.460351][ T39] ? __cfi_ext4_writepages+0x10/0x10 [ 227.460415][ T39] ? __cfi__raw_spin_lock+0x10/0x10 [ 227.460484][ T39] ? __cfi_ext4_writepages+0x10/0x10 [ 227.460541][ T39] do_writepages+0x3d7/0x7f0 [ 227.460624][ T39] ? __cfi_do_writepages+0x10/0x10 [ 227.460718][ T39] ? __kasan_check_read+0x15/0x20 [ 227.460763][ T39] ? inode_io_list_move_locked+0x3b3/0x450 [ 227.460810][ T39] ? __kasan_check_write+0x18/0x20 [ 227.460862][ T39] ? _raw_spin_lock+0x92/0x120 [ 227.460915][ T39] __writeback_single_inode+0xc8/0xba0 [ 227.460976][ T39] ? locked_inode_to_wb_and_lock_list+0x1ff/0x2d0 [ 227.461030][ T39] writeback_sb_inodes+0x6a5/0xfb0 [ 227.461093][ T39] ? queue_io+0x690/0x690 [ 227.461163][ T39] ? __kasan_check_read+0x15/0x20 [ 227.461209][ T39] ? queue_io+0x3d9/0x690 [ 227.461262][ T39] __writeback_inodes_wb+0x129/0x280 [ 227.461325][ T39] writeback_inodes_wb+0x198/0x250 [ 227.461378][ T39] ? trace_writeback_pages_written+0x100/0x100 [ 227.461432][ T39] ? kthread_data+0x54/0xc0 [ 227.461477][ T39] wb_workfn+0xea1/0xef0 [ 227.461529][ T39] ? release_user_cpus_ptr+0x60/0x60 [ 227.461579][ T39] ? __kasan_check_write+0x18/0x20 [ 227.461625][ T39] ? _raw_spin_lock+0x92/0x120 [ 227.461701][ T39] ? __cfi_wb_workfn+0x10/0x10 [ 227.461762][ T39] ? _raw_spin_unlock+0x45/0x60 [ 227.461828][ T39] ? __set_cpus_allowed_ptr+0x1d6/0x2c0 [ 227.461892][ T39] ? __cfi___set_cpus_allowed_ptr+0x10/0x10 [ 227.461956][ T39] ? kick_pool+0xad/0x540 [ 227.462036][ T39] process_scheduled_works+0x7f7/0x1060 [ 227.462129][ T39] rescuer_thread+0xce5/0x1620 [ 227.462199][ T39] ? _raw_spin_lock_irqsave+0xc1/0x160 [ 227.462273][ T39] kthread+0x2c7/0x360 [ 227.462338][ T39] ? __cfi_rescuer_thread+0x10/0x10 [ 227.462399][ T39] ? __cfi_kthread+0x10/0x10 [ 227.462478][ T39] ret_from_fork+0x67/0xa0 [ 227.462554][ T39] ? __cfi_kthread+0x10/0x10 [ 227.462625][ T39] ret_from_fork_asm+0x1a/0x30 [ 227.462680][ T39] [ 227.462722][ T39] FAULT_INJECTION: forcing a failure. [ 227.462722][ T39] name failslab, interval 1, probability 100, space 0, times -1 [ 227.463365][ T31] FAULT_INJECTION: forcing a failure. [ 227.463365][ T31] name failslab, interval 1, probability 100, space 0, times -1 [ 227.467979][ T8] CPU: 0 UID: 0 PID: 8 Comm: kworker/R-netns Not tainted syzkaller #0 45964a5c932d45c81e53484b258bbb49855afb35 [ 227.468048][ T8] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 227.468094][ T8] Workqueue: netns cleanup_net [ 227.468166][ T8] Call Trace: [ 227.468183][ T8] [ 227.468201][ T8] __dump_stack+0x21/0x30 [ 227.468271][ T8] dump_stack_lvl+0x140/0x1c0 [ 227.468324][ T8] ? __cfi_dump_stack_lvl+0x10/0x10 [ 227.468389][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 227.468443][ T8] ? kvfree_call_rcu+0x40e/0x730 [ 227.468512][ T8] dump_stack+0x19/0x20 [ 227.468577][ T8] should_fail_ex+0x3c2/0x510 [ 227.468623][ T8] should_failslab+0xac/0x100 [ 227.468684][ T8] __kmalloc_cache_noprof+0x41/0x470 [ 227.468732][ T8] ? __dev_set_rx_mode+0x74/0x280 [ 227.468792][ T8] ? igmp6_group_dropped+0x3b7/0xc10 [ 227.468841][ T8] ? _raw_spin_unlock_bh+0x54/0x60 [ 227.468894][ T8] igmp6_group_dropped+0x3b7/0xc10 [ 227.468947][ T8] ? __ipv6_dev_mc_inc+0xa30/0xa30 [ 227.468983][ T8] ? mutex_lock+0x97/0x1d0 [ 227.469047][ T8] ? __kasan_check_write+0x18/0x20 [ 227.469102][ T8] ? __kasan_check_read+0x15/0x20 [ 227.469149][ T8] __ipv6_dev_mc_dec+0x29f/0x4c0 [ 227.469197][ T8] __ipv6_ifa_notify+0x7b1/0xee0 [ 227.469259][ T8] ? snmp6_fill_stats+0x9b0/0x9b0 [ 227.469306][ T8] ? _raw_spin_lock+0x92/0x120 [ 227.469368][ T8] ? __cfi__raw_spin_lock+0x10/0x10 [ 227.469423][ T8] ? __kasan_check_write+0x18/0x20 [ 227.469501][ T8] ? work_grab_pending+0x301/0x830 [ 227.469577][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 227.469632][ T8] ? kvfree_call_rcu+0x40e/0x730 [ 227.469688][ T8] ? mod_delayed_work_on+0x140/0x140 [ 227.469749][ T8] ? __kasan_check_write+0x18/0x20 [ 227.469796][ T8] ? _raw_spin_lock_bh+0x96/0x130 [ 227.469849][ T8] ? __cfi__raw_spin_lock_bh+0x10/0x10 [ 227.469904][ T8] ? __cancel_work+0x175/0x1f0 [ 227.469963][ T8] addrconf_ifdown+0xe01/0x1970 [ 227.470016][ T8] ? addrconf_cleanup+0x150/0x150 [ 227.470063][ T8] ? __kasan_check_write+0x18/0x20 [ 227.470110][ T8] ? mutex_unlock+0x90/0x240 [ 227.470171][ T8] ? __cfi_mutex_unlock+0x10/0x10 [ 227.470236][ T8] ? __cfi_device_cmp+0x10/0x10 [ 227.470299][ T8] ? masq_device_event+0xe0/0xe0 [ 227.470361][ T8] addrconf_notify+0x17a/0xeb0 [ 227.470415][ T8] ? ip6mr_device_event+0x1ed/0x230 [ 227.470461][ T8] ? __cfi_addrconf_notify+0x10/0x10 [ 227.470516][ T8] notifier_call_chain+0x106/0x2b0 [ 227.470564][ T8] raw_notifier_call_chain+0x31/0x40 [ 227.470614][ T8] dev_close_many+0x332/0x4f0 [ 227.470662][ T8] ? __cfi_dev_close_many+0x10/0x10 [ 227.470708][ T8] ? __kasan_check_read+0x15/0x20 [ 227.470754][ T8] unregister_netdevice_many_notify+0x4bd/0x1be0 [ 227.470832][ T8] ? __cfi_unregister_netdevice_many_notify+0x10/0x10 [ 227.470924][ T8] ? __kasan_check_read+0x15/0x20 [ 227.470964][ T8] ? __kasan_check_read+0x15/0x20 [ 227.470994][ T8] ? unregister_netdevice_queue+0x18a/0x350 [ 227.471057][ T8] default_device_exit_batch+0x845/0x8d0 [ 227.471129][ T8] ? mutex_lock+0x97/0x1d0 [ 227.471192][ T8] ? __cfi_mutex_lock+0x10/0x10 [ 227.471261][ T8] ? __cfi_default_device_exit_batch+0x10/0x10 [ 227.471334][ T8] ? rtnl_unlock+0x12/0x20 [ 227.471396][ T8] ? __cfi_default_device_exit_batch+0x10/0x10 [ 227.471477][ T8] cleanup_net+0x744/0xc90 [ 227.471537][ T8] ? __cfi_cleanup_net+0x10/0x10 [ 227.471587][ T8] ? __set_cpus_allowed_ptr+0x1d6/0x2c0 [ 227.471663][ T8] ? __cfi___set_cpus_allowed_ptr+0x10/0x10 [ 227.471722][ T8] ? kick_pool+0xad/0x540 [ 227.471786][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 227.471858][ T8] process_scheduled_works+0x7f7/0x1060 [ 227.471933][ T8] rescuer_thread+0xce5/0x1620 [ 227.471992][ T8] ? _raw_spin_lock_irqsave+0xc1/0x160 [ 227.472066][ T8] kthread+0x2c7/0x360 [ 227.472130][ T8] ? __cfi_rescuer_thread+0x10/0x10 [ 227.472200][ T8] ? __cfi_kthread+0x10/0x10 [ 227.472277][ T8] ret_from_fork+0x67/0xa0 [ 227.472360][ T8] ? __cfi_kthread+0x10/0x10 [ 227.472430][ T8] ret_from_fork_asm+0x1a/0x30 [ 227.472492][ T8] [ 227.472819][ T8] FAULT_INJECTION: forcing a failure. [ 227.472819][ T8] name failslab, interval 1, probability 100, space 0, times -1 [ 227.478469][ T37] Not tainted syzkaller #0 [ 227.478483][ T37] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 227.483084][ T39] CPU: 0 UID: 0 PID: 39 Comm: kworker/R-write Not tainted syzkaller #0 45964a5c932d45c81e53484b258bbb49855afb35 [ 227.483171][ T39] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 227.483191][ T39] Workqueue: writeback wb_workfn (flush-8:0) [ 227.483263][ T39] Call Trace: [ 227.483283][ T39] [ 227.483301][ T39] __dump_stack+0x21/0x30 [ 227.483374][ T39] dump_stack_lvl+0x140/0x1c0 [ 227.483444][ T39] ? __cfi_dump_stack_lvl+0x10/0x10 [ 227.483522][ T39] dump_stack+0x19/0x20 [ 227.483591][ T39] should_fail_ex+0x3c2/0x510 [ 227.483647][ T39] should_failslab+0xac/0x100 [ 227.483701][ T39] kmem_cache_alloc_noprof+0x42/0x410 [ 227.483748][ T39] ? ext4_init_io_end+0x44/0x1b0 [ 227.483819][ T39] ext4_init_io_end+0x44/0x1b0 [ 227.483883][ T39] ext4_do_writepages+0xac8/0x39f0 [ 227.483936][ T39] ? ext4_normal_submit_inode_data_buffers+0x270/0x270 [ 227.484006][ T39] ext4_writepages+0x28c/0x550 [ 227.484070][ T39] ? __cfi_ext4_writepages+0x10/0x10 [ 227.484134][ T39] ? __cfi__raw_spin_lock+0x10/0x10 [ 227.484191][ T39] ? __cfi_ext4_writepages+0x10/0x10 [ 227.484255][ T39] do_writepages+0x3d7/0x7f0 [ 227.484329][ T39] ? __cfi_do_writepages+0x10/0x10 [ 227.484421][ T39] ? __kasan_check_read+0x15/0x20 [ 227.484483][ T39] ? inode_io_list_move_locked+0x3b3/0x450 [ 227.484534][ T39] ? __kasan_check_write+0x18/0x20 [ 227.484597][ T39] ? _raw_spin_lock+0x92/0x120 [ 227.484649][ T39] __writeback_single_inode+0xc8/0xba0 [ 227.484712][ T39] ? locked_inode_to_wb_and_lock_list+0x1ff/0x2d0 [ 227.484767][ T39] writeback_sb_inodes+0x6a5/0xfb0 [ 227.484828][ T39] ? queue_io+0x690/0x690 [ 227.484883][ T39] ? __kasan_check_read+0x15/0x20 [ 227.484936][ T39] ? queue_io+0x3d9/0x690 [ 227.484974][ T39] __writeback_inodes_wb+0x129/0x280 [ 227.485036][ T39] writeback_inodes_wb+0x198/0x250 [ 227.485081][ T39] ? trace_writeback_pages_written+0x100/0x100 [ 227.485143][ T39] ? kthread_data+0x54/0xc0 [ 227.485189][ T39] wb_workfn+0xea1/0xef0 [ 227.485236][ T39] ? release_user_cpus_ptr+0x60/0x60 [ 227.485293][ T39] ? __kasan_check_write+0x18/0x20 [ 227.485345][ T39] ? _raw_spin_lock+0x92/0x120 [ 227.485393][ T39] ? __cfi_wb_workfn+0x10/0x10 [ 227.485437][ T39] ? _raw_spin_unlock+0x45/0x60 [ 227.485505][ T39] ? __set_cpus_allowed_ptr+0x1d6/0x2c0 [ 227.485553][ T39] ? __cfi___set_cpus_allowed_ptr+0x10/0x10 [ 227.485605][ T39] ? kick_pool+0xad/0x540 [ 227.485660][ T39] process_scheduled_works+0x7f7/0x1060 [ 227.485720][ T39] rescuer_thread+0xce5/0x1620 [ 227.485776][ T39] ? _raw_spin_lock_irqsave+0xc1/0x160 [ 227.485841][ T39] kthread+0x2c7/0x360 [ 227.485894][ T39] ? __cfi_rescuer_thread+0x10/0x10 [ 227.485959][ T39] ? __cfi_kthread+0x10/0x10 [ 227.486031][ T39] ret_from_fork+0x67/0xa0 [ 227.486095][ T39] ? __cfi_kthread+0x10/0x10 [ 227.486150][ T39] ret_from_fork_asm+0x1a/0x30 [ 227.486201][ T39] [ 227.486238][ T39] FAULT_INJECTION: forcing a failure. [ 227.486238][ T39] name failslab, interval 1, probability 100, space 0, times -1 [ 227.487483][ T12] CPU: 1 UID: 0 PID: 12 Comm: kworker/u8:0 Not tainted syzkaller #0 45964a5c932d45c81e53484b258bbb49855afb35 [ 227.487572][ T12] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 227.487606][ T12] Workqueue: wg-kex-wg0 wg_packet_handshake_send_worker [ 227.487682][ T12] Call Trace: [ 227.487699][ T12] [ 227.487718][ T12] __dump_stack+0x21/0x30 [ 227.487781][ T12] dump_stack_lvl+0x140/0x1c0 [ 227.487857][ T12] ? __cfi_dump_stack_lvl+0x10/0x10 [ 227.487922][ T12] ? calc_wheel_index+0x13a/0x8f0 [ 227.487999][ T12] ? __kasan_check_write+0x18/0x20 [ 227.488047][ T12] ? timer_update_keys+0xd0/0xd0 [ 227.488109][ T12] dump_stack+0x19/0x20 [ 227.488180][ T12] should_fail_ex+0x3c2/0x510 [ 227.488233][ T12] should_failslab+0xac/0x100 [ 227.488288][ T12] kmem_cache_alloc_node_noprof+0x45/0x420 [ 227.488340][ T12] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 227.488401][ T12] ? __alloc_skb+0x10c/0x360 [ 227.488445][ T12] ? __mod_timer+0x881/0xd20 [ 227.488486][ T12] __alloc_skb+0x10c/0x360 [ 227.488548][ T12] wg_socket_send_buffer_to_peer+0x3b/0x170 [ 227.488618][ T12] ? ktime_get_coarse_with_offset+0x157/0x1a0 [ 227.488671][ T12] wg_packet_handshake_send_worker+0x204/0x2a0 [ 227.488732][ T12] ? __cfi_wg_packet_handshake_send_worker+0x10/0x10 [ 227.488804][ T12] ? wake_up_process+0x14/0x20 [ 227.488848][ T12] ? kick_pool+0x3b7/0x540 [ 227.488903][ T12] process_scheduled_works+0x7f7/0x1060 [ 227.488981][ T12] worker_thread+0xc99/0x13f0 [ 227.489059][ T12] kthread+0x2c7/0x360 [ 227.489113][ T12] ? __cfi_worker_thread+0x10/0x10 [ 227.489160][ T12] ? __cfi_kthread+0x10/0x10 [ 227.489215][ T12] ret_from_fork+0x67/0xa0 [ 227.489283][ T12] ? __cfi_kthread+0x10/0x10 [ 227.489336][ T12] ret_from_fork_asm+0x1a/0x30 [ 227.489388][ T12] [ 227.489868][ T12] FAULT_INJECTION: forcing a failure. [ 227.489868][ T12] name failslab, interval 1, probability 100, space 0, times -1 [ 227.492062][ T8] CPU: 0 UID: 0 PID: 8 Comm: kworker/R-netns Not tainted syzkaller #0 45964a5c932d45c81e53484b258bbb49855afb35 [ 227.492138][ T8] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 227.492192][ T8] Workqueue: netns cleanup_net [ 227.492270][ T8] Call Trace: [ 227.492290][ T8] [ 227.492313][ T8] __dump_stack+0x21/0x30 [ 227.492395][ T8] dump_stack_lvl+0x140/0x1c0 [ 227.492478][ T8] ? __cfi_dump_stack_lvl+0x10/0x10 [ 227.492553][ T8] ? _raw_spin_lock_bh+0x96/0x130 [ 227.492623][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 227.492689][ T8] ? pneigh_queue_purge+0x570/0x5d0 [ 227.492785][ T8] ? timer_delete+0x101/0x3e0 [ 227.492854][ T8] dump_stack+0x19/0x20 [ 227.492918][ T8] should_fail_ex+0x3c2/0x510 [ 227.492968][ T8] should_failslab+0xac/0x100 [ 227.493023][ T8] kmem_cache_alloc_node_noprof+0x45/0x420 [ 227.493068][ T8] ? __alloc_skb+0x10c/0x360 [ 227.493133][ T8] __alloc_skb+0x10c/0x360 [ 227.493195][ T8] rtmsg_ifinfo_build_skb+0x7a/0x270 [ 227.493249][ T8] rtmsg_ifinfo+0x91/0x1a0 [ 227.493296][ T8] dev_close_many+0x27b/0x4f0 [ 227.493344][ T8] ? __cfi_dev_close_many+0x10/0x10 [ 227.493410][ T8] ? __kasan_check_read+0x15/0x20 [ 227.493461][ T8] unregister_netdevice_many_notify+0x4bd/0x1be0 [ 227.493542][ T8] ? __cfi_unregister_netdevice_many_notify+0x10/0x10 [ 227.493637][ T8] ? __kasan_check_read+0x15/0x20 [ 227.493689][ T8] ? __kasan_check_read+0x15/0x20 [ 227.493741][ T8] ? unregister_netdevice_queue+0x18a/0x350 [ 227.493817][ T8] default_device_exit_batch+0x845/0x8d0 [ 227.493889][ T8] ? mutex_lock+0x97/0x1d0 [ 227.493946][ T8] ? __cfi_mutex_lock+0x10/0x10 [ 227.494006][ T8] ? __cfi_default_device_exit_batch+0x10/0x10 [ 227.494084][ T8] ? rtnl_unlock+0x12/0x20 [ 227.494149][ T8] ? __cfi_default_device_exit_batch+0x10/0x10 [ 227.494222][ T8] cleanup_net+0x744/0xc90 [ 227.494284][ T8] ? __cfi_cleanup_net+0x10/0x10 [ 227.494341][ T8] ? __set_cpus_allowed_ptr+0x1d6/0x2c0 [ 227.494389][ T8] ? __cfi___set_cpus_allowed_ptr+0x10/0x10 [ 227.494442][ T8] ? kick_pool+0xad/0x540 [ 227.494504][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 227.494561][ T8] process_scheduled_works+0x7f7/0x1060 [ 227.494616][ T8] rescuer_thread+0xce5/0x1620 [ 227.494695][ T8] ? _raw_spin_lock_irqsave+0xc1/0x160 [ 227.494766][ T8] kthread+0x2c7/0x360 [ 227.494819][ T8] ? __cfi_rescuer_thread+0x10/0x10 [ 227.494873][ T8] ? __cfi_kthread+0x10/0x10 [ 227.494939][ T8] ret_from_fork+0x67/0xa0 [ 227.495014][ T8] ? __cfi_kthread+0x10/0x10 [ 227.495081][ T8] ret_from_fork_asm+0x1a/0x30 [ 227.495129][ T8] [ 227.495387][ T8] FAULT_INJECTION: forcing a failure. [ 227.495387][ T8] name failslab, interval 1, probability 100, space 0, times -1 [ 227.499801][ T37] task:kworker/u8:3 state:D stack:0 pid:309 tgid:309 ppid:2 flags:0x00004000 [ 227.499832][ T37] Workqueue: events_unbound linkwatch_event [ 227.508593][ T8] CPU: 0 UID: 0 PID: 8 Comm: kworker/R-netns Not tainted syzkaller #0 45964a5c932d45c81e53484b258bbb49855afb35 [ 227.508619][ T8] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 227.508647][ T8] Workqueue: netns cleanup_net [ 227.508725][ T8] Call Trace: [ 227.508749][ T8] [ 227.508762][ T8] __dump_stack+0x21/0x30 [ 227.508825][ T8] dump_stack_lvl+0x140/0x1c0 [ 227.508889][ T8] ? __cfi_dump_stack_lvl+0x10/0x10 [ 227.508953][ T8] ? prb_first_seq+0x109/0x1d0 [ 227.509002][ T8] ? __cfi_prb_first_seq+0x10/0x10 [ 227.509056][ T8] dump_stack+0x19/0x20 [ 227.509112][ T8] should_fail_ex+0x3c2/0x510 [ 227.509165][ T8] should_failslab+0xac/0x100 [ 227.509220][ T8] kmem_cache_alloc_node_noprof+0x45/0x420 [ 227.509267][ T8] ? __kasan_check_write+0x18/0x20 [ 227.509309][ T8] ? __alloc_skb+0x10c/0x360 [ 227.509366][ T8] ? __cfi__raw_spin_lock_bh+0x10/0x10 [ 227.509426][ T8] __alloc_skb+0x10c/0x360 [ 227.509493][ T8] inet6_rt_notify+0x351/0x520 [ 227.509545][ T8] ? fib6_purge_rt+0x6f8/0x7b0 [ 227.509615][ T8] ? __cfi_inet6_rt_notify+0x10/0x10 [ 227.509666][ T8] fib6_del+0xba0/0xf50 [ 227.509730][ T8] ? __cfi_fib6_del+0x10/0x10 [ 227.509780][ T8] ? stack_trace_save+0xaa/0x100 [ 227.509842][ T8] ? stack_depot_save_flags+0x38/0x800 [ 227.509899][ T8] ? fib6_ifdown+0x2f1/0x4f0 [ 227.509950][ T8] fib6_clean_node+0x2b9/0x560 [ 227.510011][ T8] ? __cfi_fib6_clean_node+0x10/0x10 [ 227.510081][ T8] ? __kasan_check_write+0x18/0x20 [ 227.510151][ T8] ? _raw_spin_lock+0x92/0x120 [ 227.510214][ T8] ? __cfi__raw_spin_lock+0x10/0x10 [ 227.510270][ T8] fib6_walk_continue+0x518/0x740 [ 227.510342][ T8] __fib6_clean_all+0x2a2/0x440 [ 227.510403][ T8] ? __cfi_fib6_ifdown+0x10/0x10 [ 227.510462][ T8] ? fib6_clean_all+0x50/0x50 [ 227.510520][ T8] ? __cfi_fib6_clean_node+0x10/0x10 [ 227.510594][ T8] ? __cfi_fib6_ifdown+0x10/0x10 [ 227.510645][ T8] ? __cfi_fib6_ifdown+0x10/0x10 [ 227.510691][ T8] fib6_clean_all+0x2e/0x50 [ 227.510752][ T8] rt6_disable_ip+0x124/0x810 [ 227.510798][ T8] ? __cfi__raw_spin_lock_irqsave+0x10/0x10 [ 227.510852][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 227.510906][ T8] ? __cfi_rt6_disable_ip+0x10/0x10 [ 227.510952][ T8] ? pneigh_queue_purge+0x570/0x5d0 [ 227.511012][ T8] ? __kasan_check_read+0x15/0x20 [ 227.511063][ T8] addrconf_ifdown+0x161/0x1970 [ 227.511111][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 227.511164][ T8] ? __try_to_del_timer_sync+0x2e8/0x440 [ 227.511224][ T8] ? addrconf_cleanup+0x150/0x150 [ 227.511271][ T8] ? __kasan_check_write+0x18/0x20 [ 227.511322][ T8] ? mutex_unlock+0x90/0x240 [ 227.511385][ T8] ? __cfi_mutex_unlock+0x10/0x10 [ 227.511441][ T8] ? __cfi_device_cmp+0x10/0x10 [ 227.511534][ T8] ? masq_device_event+0xe0/0xe0 [ 227.511602][ T8] addrconf_notify+0x17a/0xeb0 [ 227.511685][ T8] ? ip6mr_device_event+0x1ed/0x230 [ 227.511745][ T8] ? __cfi_addrconf_notify+0x10/0x10 [ 227.511810][ T8] notifier_call_chain+0x106/0x2b0 [ 227.511870][ T8] raw_notifier_call_chain+0x31/0x40 [ 227.511933][ T8] dev_close_many+0x332/0x4f0 [ 227.511991][ T8] ? __cfi_dev_close_many+0x10/0x10 [ 227.512060][ T8] ? __kasan_check_read+0x15/0x20 [ 227.512113][ T8] unregister_netdevice_many_notify+0x4bd/0x1be0 [ 227.512204][ T8] ? __cfi_unregister_netdevice_many_notify+0x10/0x10 [ 227.512286][ T8] ? __kasan_check_read+0x15/0x20 [ 227.512343][ T8] ? __kasan_check_read+0x15/0x20 [ 227.512403][ T8] ? unregister_netdevice_queue+0x18a/0x350 [ 227.512495][ T8] default_device_exit_batch+0x845/0x8d0 [ 227.512579][ T8] ? mutex_lock+0x97/0x1d0 [ 227.512651][ T8] ? __cfi_mutex_lock+0x10/0x10 [ 227.512732][ T8] ? __cfi_default_device_exit_batch+0x10/0x10 [ 227.512836][ T8] ? rtnl_unlock+0x12/0x20 [ 227.512944][ T8] ? __cfi_default_device_exit_batch+0x10/0x10 [ 227.513022][ T8] cleanup_net+0x744/0xc90 [ 227.513077][ T8] ? __cfi_cleanup_net+0x10/0x10 [ 227.513131][ T8] ? __set_cpus_allowed_ptr+0x1d6/0x2c0 [ 227.513183][ T8] ? __cfi___set_cpus_allowed_ptr+0x10/0x10 [ 227.513230][ T8] ? kick_pool+0xad/0x540 [ 227.513298][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 227.513353][ T8] process_scheduled_works+0x7f7/0x1060 [ 227.513413][ T8] rescuer_thread+0xce5/0x1620 [ 227.513480][ T8] ? _raw_spin_lock_irqsave+0xc1/0x160 [ 227.513545][ T8] kthread+0x2c7/0x360 [ 227.513597][ T8] ? __cfi_rescuer_thread+0x10/0x10 [ 227.513650][ T8] ? __cfi_kthread+0x10/0x10 [ 227.513711][ T8] ret_from_fork+0x67/0xa0 [ 227.513776][ T8] ? __cfi_kthread+0x10/0x10 [ 227.513830][ T8] ret_from_fork_asm+0x1a/0x30 [ 227.513882][ T8] [ 227.513938][ T8] FAULT_INJECTION: forcing a failure. [ 227.513938][ T8] name failslab, interval 1, probability 100, space 0, times -1 [ 227.515553][ T31] CPU: 1 UID: 0 PID: 31 Comm: kworker/1:0 Not tainted syzkaller #0 45964a5c932d45c81e53484b258bbb49855afb35 [ 227.515585][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 227.515601][ T31] Workqueue: 0x0 (events) [ 227.515627][ T31] Call Trace: [ 227.515651][ T31] [ 227.515681][ T31] __dump_stack+0x21/0x30 [ 227.515783][ T31] dump_stack_lvl+0x140/0x1c0 [ 227.515872][ T31] ? __cfi_dump_stack_lvl+0x10/0x10 [ 227.515974][ T31] ? ida_alloc_range+0xa44/0xa80 [ 227.516035][ T31] ? __kasan_check_write+0x18/0x20 [ 227.516096][ T31] dump_stack+0x19/0x20 [ 227.516178][ T31] should_fail_ex+0x3c2/0x510 [ 227.516241][ T31] should_failslab+0xac/0x100 [ 227.516307][ T31] __kmalloc_cache_node_noprof+0x46/0x430 [ 227.516370][ T31] ? create_worker+0x11b/0x920 [ 227.516453][ T31] create_worker+0x11b/0x920 [ 227.516550][ T31] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 227.516607][ T31] ? workqueue_prepare_cpu+0x190/0x190 [ 227.516678][ T31] ? __cfi_process_timeout+0x10/0x10 [ 227.516742][ T31] worker_thread+0x471/0x13f0 [ 227.516801][ T31] kthread+0x2c7/0x360 [ 227.516853][ T31] ? __cfi_worker_thread+0x10/0x10 [ 227.516921][ T31] ? __cfi_kthread+0x10/0x10 [ 227.516975][ T31] ret_from_fork+0x67/0xa0 [ 227.517034][ T31] ? __cfi_kthread+0x10/0x10 [ 227.517102][ T31] ret_from_fork_asm+0x1a/0x30 [ 227.517173][ T31] [ 227.517262][ T13] CPU: 1 UID: 0 PID: 13 Comm: kworker/u8:1 Not tainted syzkaller #0 45964a5c932d45c81e53484b258bbb49855afb35 [ 227.517324][ T13] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 227.517360][ T13] Workqueue: wg-kex-wg2 wg_packet_handshake_send_worker [ 227.517425][ T13] Call Trace: [ 227.517442][ T13] [ 227.517455][ T13] __dump_stack+0x21/0x30 [ 227.517519][ T13] dump_stack_lvl+0x140/0x1c0 [ 227.517581][ T13] ? __cfi_dump_stack_lvl+0x10/0x10 [ 227.517644][ T13] ? calc_wheel_index+0x1b9/0x8f0 [ 227.517706][ T13] ? __kasan_check_write+0x18/0x20 [ 227.517757][ T13] ? timer_update_keys+0xd0/0xd0 [ 227.517819][ T13] dump_stack+0x19/0x20 [ 227.517882][ T13] should_fail_ex+0x3c2/0x510 [ 227.517936][ T13] should_failslab+0xac/0x100 [ 227.518007][ T13] kmem_cache_alloc_node_noprof+0x45/0x420 [ 227.518059][ T13] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 227.518112][ T13] ? __alloc_skb+0x10c/0x360 [ 227.518173][ T13] ? __mod_timer+0x881/0xd20 [ 227.518229][ T13] __alloc_skb+0x10c/0x360 [ 227.518294][ T13] wg_socket_send_buffer_to_peer+0x3b/0x170 [ 227.518364][ T13] ? ktime_get_coarse_with_offset+0x157/0x1a0 [ 227.518424][ T13] wg_packet_handshake_send_worker+0x204/0x2a0 [ 227.518504][ T13] ? __cfi_wg_packet_handshake_send_worker+0x10/0x10 [ 227.518603][ T13] ? wake_up_process+0x14/0x20 [ 227.518647][ T13] ? kick_pool+0x3b7/0x540 [ 227.518702][ T13] process_scheduled_works+0x7f7/0x1060 [ 227.518762][ T13] worker_thread+0xc99/0x13f0 [ 227.518824][ T13] kthread+0x2c7/0x360 [ 227.518877][ T13] ? __cfi_worker_thread+0x10/0x10 [ 227.518924][ T13] ? __cfi_kthread+0x10/0x10 [ 227.518981][ T13] ret_from_fork+0x67/0xa0 [ 227.519050][ T13] ? __cfi_kthread+0x10/0x10 [ 227.519104][ T13] ret_from_fork_asm+0x1a/0x30 [ 227.519157][ T13] [ 227.519552][ T13] FAULT_INJECTION: forcing a failure. [ 227.519552][ T13] name failslab, interval 1, probability 100, space 0, times -1 [ 227.523694][ T8] CPU: 0 UID: 0 PID: 8 Comm: kworker/R-netns Not tainted syzkaller #0 45964a5c932d45c81e53484b258bbb49855afb35 [ 227.523720][ T8] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 227.523732][ T8] Workqueue: netns cleanup_net [ 227.523785][ T8] Call Trace: [ 227.523802][ T8] [ 227.523826][ T8] __dump_stack+0x21/0x30 [ 227.523918][ T8] dump_stack_lvl+0x140/0x1c0 [ 227.523986][ T8] ? __cfi_dump_stack_lvl+0x10/0x10 [ 227.524058][ T8] dump_stack+0x19/0x20 [ 227.524119][ T8] should_fail_ex+0x3c2/0x510 [ 227.524174][ T8] should_failslab+0xac/0x100 [ 227.524229][ T8] kmem_cache_alloc_node_noprof+0x45/0x420 [ 227.524280][ T8] ? __kasan_check_write+0x18/0x20 [ 227.524332][ T8] ? __alloc_skb+0x10c/0x360 [ 227.524389][ T8] ? __cfi__raw_spin_lock_bh+0x10/0x10 [ 227.524442][ T8] __alloc_skb+0x10c/0x360 [ 227.524514][ T8] inet6_rt_notify+0x351/0x520 [ 227.524569][ T8] ? __cfi_inet6_rt_notify+0x10/0x10 [ 227.524621][ T8] ? call_fib_notifiers+0xa4/0xc0 [ 227.524669][ T8] fib6_del+0xba0/0xf50 [ 227.524746][ T8] ? __cfi_fib6_del+0x10/0x10 [ 227.524802][ T8] ? stack_trace_save+0xaa/0x100 [ 227.524857][ T8] ? fib6_ifdown+0x2f1/0x4f0 [ 227.524909][ T8] fib6_clean_node+0x2b9/0x560 [ 227.524977][ T8] ? __cfi_fib6_clean_node+0x10/0x10 [ 227.525041][ T8] ? __kasan_check_write+0x18/0x20 [ 227.525080][ T8] ? _raw_spin_lock+0x92/0x120 [ 227.525127][ T8] ? __cfi__raw_spin_lock+0x10/0x10 [ 227.525190][ T8] fib6_walk_continue+0x518/0x740 [ 227.525264][ T8] __fib6_clean_all+0x2a2/0x440 [ 227.525334][ T8] ? __cfi_fib6_ifdown+0x10/0x10 [ 227.525387][ T8] ? fib6_clean_all+0x50/0x50 [ 227.525459][ T8] ? __cfi_fib6_clean_node+0x10/0x10 [ 227.525524][ T8] ? __cfi_fib6_ifdown+0x10/0x10 [ 227.525575][ T8] ? __cfi_fib6_ifdown+0x10/0x10 [ 227.525622][ T8] fib6_clean_all+0x2e/0x50 [ 227.525684][ T8] rt6_disable_ip+0x124/0x810 [ 227.525731][ T8] ? __cfi__raw_spin_lock_irqsave+0x10/0x10 [ 227.525787][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 227.525846][ T8] ? __cfi_rt6_disable_ip+0x10/0x10 [ 227.525894][ T8] ? pneigh_queue_purge+0x570/0x5d0 [ 227.525960][ T8] ? __kasan_check_read+0x15/0x20 [ 227.525999][ T8] addrconf_ifdown+0x161/0x1970 [ 227.526048][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 227.526102][ T8] ? __try_to_del_timer_sync+0x2e8/0x440 [ 227.526158][ T8] ? addrconf_cleanup+0x150/0x150 [ 227.526203][ T8] ? __kasan_check_write+0x18/0x20 [ 227.526256][ T8] ? mutex_unlock+0x90/0x240 [ 227.526321][ T8] ? __cfi_mutex_unlock+0x10/0x10 [ 227.526377][ T8] ? __cfi_device_cmp+0x10/0x10 [ 227.526434][ T8] ? masq_device_event+0xe0/0xe0 [ 227.526505][ T8] addrconf_notify+0x17a/0xeb0 [ 227.526558][ T8] ? ip6mr_device_event+0x1ed/0x230 [ 227.526615][ T8] ? __cfi_addrconf_notify+0x10/0x10 [ 227.526688][ T8] notifier_call_chain+0x106/0x2b0 [ 227.526740][ T8] raw_notifier_call_chain+0x31/0x40 [ 227.526787][ T8] dev_close_many+0x332/0x4f0 [ 227.526839][ T8] ? __cfi_dev_close_many+0x10/0x10 [ 227.526892][ T8] ? __kasan_check_read+0x15/0x20 [ 227.526939][ T8] unregister_netdevice_many_notify+0x4bd/0x1be0 [ 227.527002][ T8] ? __cfi_unregister_netdevice_many_notify+0x10/0x10 [ 227.527070][ T8] ? __kasan_check_read+0x15/0x20 [ 227.527119][ T8] ? __kasan_check_read+0x15/0x20 [ 227.527164][ T8] ? unregister_netdevice_queue+0x18a/0x350 [ 227.527233][ T8] default_device_exit_batch+0x845/0x8d0 [ 227.527300][ T8] ? mutex_lock+0x97/0x1d0 [ 227.527363][ T8] ? __cfi_mutex_lock+0x10/0x10 [ 227.527423][ T8] ? __cfi_default_device_exit_batch+0x10/0x10 [ 227.527512][ T8] ? rtnl_unlock+0x12/0x20 [ 227.527581][ T8] ? __cfi_default_device_exit_batch+0x10/0x10 [ 227.527648][ T8] cleanup_net+0x744/0xc90 [ 227.527709][ T8] ? __cfi_cleanup_net+0x10/0x10 [ 227.527762][ T8] ? __set_cpus_allowed_ptr+0x1d6/0x2c0 [ 227.527816][ T8] ? __cfi___set_cpus_allowed_ptr+0x10/0x10 [ 227.527862][ T8] ? kick_pool+0xad/0x540 [ 227.527917][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 227.527988][ T8] process_scheduled_works+0x7f7/0x1060 [ 227.528071][ T8] rescuer_thread+0xce5/0x1620 [ 227.528131][ T8] ? _raw_spin_lock_irqsave+0xc1/0x160 [ 227.528193][ T8] kthread+0x2c7/0x360 [ 227.528242][ T8] ? __cfi_rescuer_thread+0x10/0x10 [ 227.528297][ T8] ? __cfi_kthread+0x10/0x10 [ 227.528352][ T8] ret_from_fork+0x67/0xa0 [ 227.528416][ T8] ? __cfi_kthread+0x10/0x10 [ 227.528480][ T8] ret_from_fork_asm+0x1a/0x30 [ 227.528526][ T8] [ 227.528652][ T39] CPU: 0 UID: 0 PID: 39 Comm: kworker/R-write Not tainted syzkaller #0 45964a5c932d45c81e53484b258bbb49855afb35 [ 227.528713][ T39] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 227.528742][ T39] Workqueue: writeback wb_workfn (flush-8:0) [ 227.528798][ T39] Call Trace: [ 227.528815][ T39] [ 227.528833][ T39] __dump_stack+0x21/0x30 [ 227.528896][ T39] dump_stack_lvl+0x140/0x1c0 [ 227.528956][ T39] ? __cfi_dump_stack_lvl+0x10/0x10 [ 227.529028][ T39] dump_stack+0x19/0x20 [ 227.529087][ T39] should_fail_ex+0x3c2/0x510 [ 227.529140][ T39] should_failslab+0xac/0x100 [ 227.529194][ T39] kmem_cache_alloc_noprof+0x42/0x410 [ 227.529245][ T39] ? ext4_init_io_end+0x44/0x1b0 [ 227.529311][ T39] ext4_init_io_end+0x44/0x1b0 [ 227.529400][ T39] ext4_do_writepages+0xac8/0x39f0 [ 227.529493][ T39] ? ext4_normal_submit_inode_data_buffers+0x270/0x270 [ 227.529565][ T39] ext4_writepages+0x28c/0x550 [ 227.529621][ T39] ? __cfi_ext4_writepages+0x10/0x10 [ 227.529686][ T39] ? __cfi__raw_spin_lock+0x10/0x10 [ 227.529741][ T39] ? __cfi_ext4_writepages+0x10/0x10 [ 227.529791][ T39] do_writepages+0x3d7/0x7f0 [ 227.529851][ T39] ? __cfi_do_writepages+0x10/0x10 [ 227.529917][ T39] ? __kasan_check_read+0x15/0x20 [ 227.529966][ T39] ? inode_io_list_move_locked+0x3b3/0x450 [ 227.530020][ T39] ? __kasan_check_write+0x18/0x20 [ 227.530067][ T39] ? _raw_spin_lock+0x92/0x120 [ 227.530119][ T39] __writeback_single_inode+0xc8/0xba0 [ 227.530172][ T39] ? locked_inode_to_wb_and_lock_list+0x1ff/0x2d0 [ 227.530228][ T39] writeback_sb_inodes+0x6a5/0xfb0 [ 227.530279][ T39] ? queue_io+0x690/0x690 [ 227.530342][ T39] ? __kasan_check_read+0x15/0x20 [ 227.530393][ T39] ? queue_io+0x3d9/0x690 [ 227.530446][ T39] __writeback_inodes_wb+0x129/0x280 [ 227.530510][ T39] writeback_inodes_wb+0x198/0x250 [ 227.530556][ T39] ? trace_writeback_pages_written+0x100/0x100 [ 227.530616][ T39] ? kthread_data+0x54/0xc0 [ 227.530665][ T39] wb_workfn+0xea1/0xef0 [ 227.530710][ T39] ? release_user_cpus_ptr+0x60/0x60 [ 227.530782][ T39] ? __kasan_check_write+0x18/0x20 [ 227.530829][ T39] ? _raw_spin_lock+0x92/0x120 [ 227.530876][ T39] ? __cfi_wb_workfn+0x10/0x10 [ 227.530923][ T39] ? _raw_spin_unlock+0x45/0x60 [ 227.530981][ T39] ? __set_cpus_allowed_ptr+0x1d6/0x2c0 [ 227.531029][ T39] ? __cfi___set_cpus_allowed_ptr+0x10/0x10 [ 227.531082][ T39] ? kick_pool+0xad/0x540 [ 227.531135][ T39] process_scheduled_works+0x7f7/0x1060 [ 227.531190][ T39] rescuer_thread+0xce5/0x1620 [ 227.531242][ T39] ? _raw_spin_lock_irqsave+0xc1/0x160 [ 227.531305][ T39] kthread+0x2c7/0x360 [ 227.531358][ T39] ? __cfi_rescuer_thread+0x10/0x10 [ 227.531410][ T39] ? __cfi_kthread+0x10/0x10 [ 227.531471][ T39] ret_from_fork+0x67/0xa0 [ 227.531528][ T39] ? __cfi_kthread+0x10/0x10 [ 227.531551][ T39] ret_from_fork_asm+0x1a/0x30 [ 227.531572][ T39] [ 227.531587][ T39] FAULT_INJECTION: forcing a failure. [ 227.531587][ T39] name failslab, interval 1, probability 100, space 0, times -1 [ 227.531624][ T39] CPU: 0 UID: 0 PID: 39 Comm: kworker/R-write Not tainted syzkaller #0 45964a5c932d45c81e53484b258bbb49855afb35 [ 227.531653][ T39] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 227.531683][ T39] Workqueue: writeback wb_workfn (flush-8:0) [ 227.531779][ T39] Call Trace: [ 227.531793][ T39] [ 227.531823][ T39] __dump_stack+0x21/0x30 [ 227.531915][ T39] dump_stack_lvl+0x140/0x1c0 [ 227.531986][ T39] ? __cfi_dump_stack_lvl+0x10/0x10 [ 227.532075][ T39] dump_stack+0x19/0x20 [ 227.532150][ T39] should_fail_ex+0x3c2/0x510 [ 227.532218][ T39] should_failslab+0xac/0x100 [ 227.532284][ T39] kmem_cache_alloc_noprof+0x42/0x410 [ 227.532346][ T39] ? ext4_init_io_end+0x44/0x1b0 [ 227.532428][ T39] ext4_init_io_end+0x44/0x1b0 [ 227.532522][ T39] ext4_do_writepages+0xac8/0x39f0 [ 227.532599][ T39] ? ext4_normal_submit_inode_data_buffers+0x270/0x270 [ 227.532693][ T39] ext4_writepages+0x28c/0x550 [ 227.532780][ T39] ? __cfi_ext4_writepages+0x10/0x10 [ 227.532855][ T39] ? __cfi__raw_spin_lock+0x10/0x10 [ 227.532915][ T39] ? __cfi_ext4_writepages+0x10/0x10 [ 227.532976][ T39] do_writepages+0x3d7/0x7f0 [ 227.533049][ T39] ? __cfi_do_writepages+0x10/0x10 [ 227.533125][ T39] ? __kasan_check_read+0x15/0x20 [ 227.533182][ T39] ? inode_io_list_move_locked+0x3b3/0x450 [ 227.533243][ T39] ? __kasan_check_write+0x18/0x20 [ 227.533297][ T39] ? _raw_spin_lock+0x92/0x120 [ 227.533354][ T39] __writeback_single_inode+0xc8/0xba0 [ 227.533415][ T39] ? locked_inode_to_wb_and_lock_list+0x1ff/0x2d0 [ 227.533472][ T39] writeback_sb_inodes+0x6a5/0xfb0 [ 227.533536][ T39] ? queue_io+0x690/0x690 [ 227.533604][ T39] ? __kasan_check_read+0x15/0x20 [ 227.533650][ T39] ? queue_io+0x3d9/0x690 [ 227.533698][ T39] __writeback_inodes_wb+0x129/0x280 [ 227.533759][ T39] writeback_inodes_wb+0x198/0x250 [ 227.533812][ T39] ? trace_writeback_pages_written+0x100/0x100 [ 227.533867][ T39] ? kthread_data+0x54/0xc0 [ 227.533923][ T39] wb_workfn+0xea1/0xef0 [ 227.533963][ T39] ? release_user_cpus_ptr+0x60/0x60 [ 227.534016][ T39] ? __kasan_check_write+0x18/0x20 [ 227.534068][ T39] ? _raw_spin_lock+0x92/0x120 [ 227.534114][ T39] ? __cfi_wb_workfn+0x10/0x10 [ 227.534160][ T39] ? _raw_spin_unlock+0x45/0x60 [ 227.534219][ T39] ? __set_cpus_allowed_ptr+0x1d6/0x2c0 [ 227.534267][ T39] ? __cfi___set_cpus_allowed_ptr+0x10/0x10 [ 227.534319][ T39] ? kick_pool+0xad/0x540 [ 227.534374][ T39] process_scheduled_works+0x7f7/0x1060 [ 227.534437][ T39] rescuer_thread+0xce5/0x1620 [ 227.534499][ T39] ? _raw_spin_lock_irqsave+0xc1/0x160 [ 227.534583][ T39] kthread+0x2c7/0x360 [ 227.534646][ T39] ? __cfi_rescuer_thread+0x10/0x10 [ 227.534713][ T39] ? __cfi_kthread+0x10/0x10 [ 227.534761][ T39] ret_from_fork+0x67/0xa0 [ 227.534829][ T39] ? __cfi_kthread+0x10/0x10 [ 227.534884][ T39] ret_from_fork_asm+0x1a/0x30 [ 227.534933][ T39] [ 227.534955][ T39] FAULT_INJECTION: forcing a failure. [ 227.534955][ T39] name failslab, interval 1, probability 100, space 0, times -1 [ 227.540513][ T12] CPU: 1 UID: 0 PID: 12 Comm: kworker/u8:0 Not tainted syzkaller #0 45964a5c932d45c81e53484b258bbb49855afb35 [ 227.540540][ T12] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 227.540554][ T12] Workqueue: wg-kex-wg1 wg_packet_handshake_send_worker [ 227.540625][ T12] Call Trace: [ 227.540631][ T12] [ 227.540655][ T12] __dump_stack+0x21/0x30 [ 227.540744][ T12] dump_stack_lvl+0x140/0x1c0 [ 227.540808][ T12] ? __cfi_dump_stack_lvl+0x10/0x10 [ 227.540877][ T12] ? calc_wheel_index+0x1b9/0x8f0 [ 227.540939][ T12] ? __kasan_check_write+0x18/0x20 [ 227.540995][ T12] ? timer_update_keys+0xd0/0xd0 [ 227.541064][ T12] dump_stack+0x19/0x20 [ 227.541125][ T12] should_fail_ex+0x3c2/0x510 [ 227.541179][ T12] should_failslab+0xac/0x100 [ 227.541249][ T12] kmem_cache_alloc_node_noprof+0x45/0x420 [ 227.541301][ T12] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 227.541355][ T12] ? __alloc_skb+0x10c/0x360 [ 227.541417][ T12] ? __mod_timer+0x881/0xd20 [ 227.541468][ T12] __alloc_skb+0x10c/0x360 [ 227.541533][ T12] wg_socket_send_buffer_to_peer+0x3b/0x170 [ 227.541606][ T12] ? ktime_get_coarse_with_offset+0x157/0x1a0 [ 227.541673][ T12] wg_packet_handshake_send_worker+0x204/0x2a0 [ 227.541749][ T12] ? __cfi_wg_packet_handshake_send_worker+0x10/0x10 [ 227.541830][ T12] ? _raw_spin_lock_irq+0x93/0x120 [ 227.541900][ T12] ? kick_pool+0xad/0x540 [ 227.541973][ T12] process_scheduled_works+0x7f7/0x1060 [ 227.542060][ T12] worker_thread+0xc99/0x13f0 [ 227.542159][ T12] kthread+0x2c7/0x360 [ 227.542224][ T12] ? __cfi_worker_thread+0x10/0x10 [ 227.542287][ T12] ? __cfi_kthread+0x10/0x10 [ 227.542353][ T12] ret_from_fork+0x67/0xa0 [ 227.542434][ T12] ? __cfi_kthread+0x10/0x10 [ 227.542507][ T12] ret_from_fork_asm+0x1a/0x30 [ 227.542570][ T12] [ 227.543068][ T12] FAULT_INJECTION: forcing a failure. [ 227.543068][ T12] name failslab, interval 1, probability 100, space 0, times -1 [ 227.548568][ T39] CPU: 0 UID: 0 PID: 39 Comm: kworker/R-write Not tainted syzkaller #0 45964a5c932d45c81e53484b258bbb49855afb35 [ 227.548652][ T39] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 227.548692][ T39] Workqueue: writeback wb_workfn (flush-8:0) [ 227.548761][ T39] Call Trace: [ 227.548772][ T39] [ 227.548797][ T39] __dump_stack+0x21/0x30 [ 227.548863][ T39] dump_stack_lvl+0x140/0x1c0 [ 227.548927][ T39] ? __cfi_dump_stack_lvl+0x10/0x10 [ 227.549003][ T39] dump_stack+0x19/0x20 [ 227.549074][ T39] should_fail_ex+0x3c2/0x510 [ 227.549129][ T39] should_failslab+0xac/0x100 [ 227.549189][ T39] kmem_cache_alloc_noprof+0x42/0x410 [ 227.549237][ T39] ? ext4_init_io_end+0x44/0x1b0 [ 227.549300][ T39] ext4_init_io_end+0x44/0x1b0 [ 227.549364][ T39] ext4_do_writepages+0xac8/0x39f0 [ 227.549434][ T39] ? ext4_normal_submit_inode_data_buffers+0x270/0x270 [ 227.549503][ T39] ext4_writepages+0x28c/0x550 [ 227.549562][ T39] ? __cfi_ext4_writepages+0x10/0x10 [ 227.549618][ T39] ? __cfi__raw_spin_lock+0x10/0x10 [ 227.549674][ T39] ? __cfi_ext4_writepages+0x10/0x10 [ 227.549729][ T39] do_writepages+0x3d7/0x7f0 [ 227.549806][ T39] ? __cfi_do_writepages+0x10/0x10 [ 227.549871][ T39] ? __kasan_check_read+0x15/0x20 [ 227.549918][ T39] ? inode_io_list_move_locked+0x3b3/0x450 [ 227.549975][ T39] ? __kasan_check_write+0x18/0x20 [ 227.550035][ T39] ? _raw_spin_lock+0x92/0x120 [ 227.550089][ T39] __writeback_single_inode+0xc8/0xba0 [ 227.550155][ T39] ? locked_inode_to_wb_and_lock_list+0x1ff/0x2d0 [ 227.550216][ T39] writeback_sb_inodes+0x6a5/0xfb0 [ 227.550275][ T39] ? queue_io+0x690/0x690 [ 227.550343][ T39] ? __kasan_check_read+0x15/0x20 [ 227.550389][ T39] ? queue_io+0x3d9/0x690 [ 227.550453][ T39] __writeback_inodes_wb+0x129/0x280 [ 227.550508][ T39] writeback_inodes_wb+0x198/0x250 [ 227.550560][ T39] ? trace_writeback_pages_written+0x100/0x100 [ 227.550617][ T39] ? kthread_data+0x54/0xc0 [ 227.550663][ T39] wb_workfn+0xea1/0xef0 [ 227.550714][ T39] ? release_user_cpus_ptr+0x60/0x60 [ 227.550760][ T39] ? __kasan_check_write+0x18/0x20 [ 227.550806][ T39] ? _raw_spin_lock+0x92/0x120 [ 227.550860][ T39] ? __cfi_wb_workfn+0x10/0x10 [ 227.550907][ T39] ? _raw_spin_unlock+0x45/0x60 [ 227.550959][ T39] ? __set_cpus_allowed_ptr+0x1d6/0x2c0 [ 227.551005][ T39] ? __cfi___set_cpus_allowed_ptr+0x10/0x10 [ 227.551048][ T39] ? kick_pool+0xad/0x540 [ 227.551107][ T39] process_scheduled_works+0x7f7/0x1060 [ 227.551163][ T39] rescuer_thread+0xce5/0x1620 [ 227.551216][ T39] ? _raw_spin_lock_irqsave+0xc1/0x160 [ 227.551268][ T39] kthread+0x2c7/0x360 [ 227.551321][ T39] ? __cfi_rescuer_thread+0x10/0x10 [ 227.551364][ T39] ? __cfi_kthread+0x10/0x10 [ 227.551429][ T39] ret_from_fork+0x67/0xa0 [ 227.551526][ T39] ? __cfi_kthread+0x10/0x10 [ 227.551587][ T39] ret_from_fork_asm+0x1a/0x30 [ 227.551632][ T39] [ 227.551705][ T39] FAULT_INJECTION: forcing a failure. [ 227.551705][ T39] name failslab, interval 1, probability 100, space 0, times -1 [ 227.557422][ T37] [ 227.557429][ T37] Call Trace: [ 227.557438][ T37] [ 227.557447][ T37] __schedule+0x1496/0x20b0 [ 227.565234][ T8] FAULT_INJECTION: forcing a failure. [ 227.565234][ T8] name failslab, interval 1, probability 100, space 0, times -1 [ 227.570726][ T45] FAULT_INJECTION: forcing a failure. [ 227.570726][ T45] name failslab, interval 1, probability 100, space 0, times -1 [ 227.578088][ T8] CPU: 0 UID: 0 PID: 8 Comm: kworker/R-netns Not tainted syzkaller #0 45964a5c932d45c81e53484b258bbb49855afb35 [ 227.578145][ T8] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 227.578184][ T8] Workqueue: netns cleanup_net [ 227.578260][ T8] Call Trace: [ 227.578277][ T8] [ 227.578294][ T8] __dump_stack+0x21/0x30 [ 227.578359][ T8] dump_stack_lvl+0x140/0x1c0 [ 227.578428][ T8] ? __cfi_dump_stack_lvl+0x10/0x10 [ 227.578502][ T8] dump_stack+0x19/0x20 [ 227.578564][ T8] should_fail_ex+0x3c2/0x510 [ 227.578620][ T8] should_failslab+0xac/0x100 [ 227.578682][ T8] kmem_cache_alloc_node_noprof+0x45/0x420 [ 227.578734][ T8] ? __kasan_check_write+0x18/0x20 [ 227.578781][ T8] ? __alloc_skb+0x10c/0x360 [ 227.578842][ T8] ? __cfi__raw_spin_lock_bh+0x10/0x10 [ 227.578902][ T8] __alloc_skb+0x10c/0x360 [ 227.578950][ T8] inet6_rt_notify+0x351/0x520 [ 227.579005][ T8] ? __cfi_inet6_rt_notify+0x10/0x10 [ 227.579052][ T8] ? call_fib_notifiers+0xa4/0xc0 [ 227.579105][ T8] fib6_del+0xba0/0xf50 [ 227.579174][ T8] ? __cfi_fib6_del+0x10/0x10 [ 227.579230][ T8] ? stack_trace_save+0xaa/0x100 [ 227.579291][ T8] ? fib6_ifdown+0x2f1/0x4f0 [ 227.579338][ T8] fib6_clean_node+0x2b9/0x560 [ 227.579403][ T8] ? __cfi_fib6_clean_node+0x10/0x10 [ 227.579484][ T8] ? preempt_schedule_common+0x2d/0x60 [ 227.579552][ T8] ? preempt_schedule+0xc5/0xe0 [ 227.579629][ T8] ? __cfi_preempt_schedule+0x10/0x10 [ 227.579697][ T8] fib6_walk_continue+0x518/0x740 [ 227.579766][ T8] __fib6_clean_all+0x2a2/0x440 [ 227.579837][ T8] ? __cfi_fib6_ifdown+0x10/0x10 [ 227.579885][ T8] ? fib6_clean_all+0x50/0x50 [ 227.579946][ T8] ? __cfi_fib6_clean_node+0x10/0x10 [ 227.580007][ T8] ? __cfi_fib6_ifdown+0x10/0x10 [ 227.580059][ T8] ? __cfi_fib6_ifdown+0x10/0x10 [ 227.580104][ T8] fib6_clean_all+0x2e/0x50 [ 227.580166][ T8] rt6_disable_ip+0x124/0x810 [ 227.580213][ T8] ? __cfi__raw_spin_lock_irqsave+0x10/0x10 [ 227.580269][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 227.580324][ T8] ? __cfi_rt6_disable_ip+0x10/0x10 [ 227.580374][ T8] ? pneigh_queue_purge+0x570/0x5d0 [ 227.580426][ T8] ? __kasan_check_read+0x15/0x20 [ 227.580488][ T8] addrconf_ifdown+0x161/0x1970 [ 227.580539][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 227.580595][ T8] ? __try_to_del_timer_sync+0x2e8/0x440 [ 227.580651][ T8] ? addrconf_cleanup+0x150/0x150 [ 227.580697][ T8] ? __kasan_check_write+0x18/0x20 [ 227.580749][ T8] ? mutex_unlock+0x90/0x240 [ 227.580810][ T8] ? __cfi_mutex_unlock+0x10/0x10 [ 227.580867][ T8] ? __cfi_device_cmp+0x10/0x10 [ 227.580928][ T8] ? masq_device_event+0xe0/0xe0 [ 227.581002][ T8] addrconf_notify+0x17a/0xeb0 [ 227.581073][ T8] ? ip6mr_device_event+0x1ed/0x230 [ 227.581113][ T8] ? __cfi_addrconf_notify+0x10/0x10 [ 227.581171][ T8] notifier_call_chain+0x106/0x2b0 [ 227.581220][ T8] raw_notifier_call_chain+0x31/0x40 [ 227.581265][ T8] dev_close_many+0x332/0x4f0 [ 227.581318][ T8] ? __cfi_dev_close_many+0x10/0x10 [ 227.581364][ T8] ? __kasan_check_read+0x15/0x20 [ 227.581415][ T8] unregister_netdevice_many_notify+0x4bd/0x1be0 [ 227.581497][ T8] ? __cfi_unregister_netdevice_many_notify+0x10/0x10 [ 227.581560][ T8] ? __kasan_check_read+0x15/0x20 [ 227.581624][ T8] ? __kasan_check_read+0x15/0x20 [ 227.581689][ T8] ? unregister_netdevice_queue+0x18a/0x350 [ 227.581765][ T8] default_device_exit_batch+0x845/0x8d0 [ 227.581857][ T8] ? mutex_lock+0x97/0x1d0 [ 227.581932][ T8] ? __cfi_mutex_lock+0x10/0x10 [ 227.582000][ T8] ? __cfi_default_device_exit_batch+0x10/0x10 [ 227.582093][ T8] ? rtnl_unlock+0x12/0x20 [ 227.582176][ T8] ? __cfi_default_device_exit_batch+0x10/0x10 [ 227.582260][ T8] cleanup_net+0x744/0xc90 [ 227.582332][ T8] ? __cfi_cleanup_net+0x10/0x10 [ 227.582423][ T8] ? __set_cpus_allowed_ptr+0x1d6/0x2c0 [ 227.582500][ T8] ? __cfi___set_cpus_allowed_ptr+0x10/0x10 [ 227.582561][ T8] ? kick_pool+0xad/0x540 [ 227.582632][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 227.582697][ T8] process_scheduled_works+0x7f7/0x1060 [ 227.582789][ T8] rescuer_thread+0xce5/0x1620 [ 227.582874][ T8] ? _raw_spin_lock_irqsave+0xc1/0x160 [ 227.582938][ T8] kthread+0x2c7/0x360 [ 227.582994][ T8] ? __cfi_rescuer_thread+0x10/0x10 [ 227.583048][ T8] ? __cfi_kthread+0x10/0x10 [ 227.583102][ T8] ret_from_fork+0x67/0xa0 [ 227.583165][ T8] ? __cfi_kthread+0x10/0x10 [ 227.583224][ T8] ret_from_fork_asm+0x1a/0x30 [ 227.583270][ T8] [ 227.583331][ T8] FAULT_INJECTION: forcing a failure. [ 227.583331][ T8] name failslab, interval 1, probability 100, space 0, times -1 [ 227.585713][ T45] CPU: 1 UID: 0 PID: 45 Comm: kworker/1:1 Not tainted syzkaller #0 45964a5c932d45c81e53484b258bbb49855afb35 [ 227.585739][ T45] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 227.585753][ T45] Workqueue: events_power_efficient neigh_periodic_work [ 227.585781][ T45] Call Trace: [ 227.585795][ T45] [ 227.585821][ T45] __dump_stack+0x21/0x30 [ 227.585908][ T45] dump_stack_lvl+0x140/0x1c0 [ 227.585985][ T45] ? __cfi_dump_stack_lvl+0x10/0x10 [ 227.586049][ T45] ? __sched_text_start+0x10/0x10 [ 227.586099][ T45] ? _raw_spin_lock+0x92/0x120 [ 227.586164][ T45] dump_stack+0x19/0x20 [ 227.586228][ T45] should_fail_ex+0x3c2/0x510 [ 227.586271][ T45] should_failslab+0xac/0x100 [ 227.586328][ T45] kmem_cache_alloc_node_noprof+0x45/0x420 [ 227.586395][ T45] ? __alloc_skb+0x10c/0x360 [ 227.586455][ T45] __alloc_skb+0x10c/0x360 [ 227.586520][ T45] __neigh_notify+0x83/0x140 [ 227.586582][ T45] neigh_cleanup_and_release+0x2c/0x1a0 [ 227.586647][ T45] neigh_periodic_work+0x9b7/0xbb0 [ 227.586728][ T45] process_scheduled_works+0x7f7/0x1060 [ 227.586790][ T45] worker_thread+0xc99/0x13f0 [ 227.586845][ T45] kthread+0x2c7/0x360 [ 227.586900][ T45] ? __cfi_worker_thread+0x10/0x10 [ 227.586969][ T45] ? __cfi_kthread+0x10/0x10 [ 227.587023][ T45] ret_from_fork+0x67/0xa0 [ 227.587092][ T45] ? __cfi_kthread+0x10/0x10 [ 227.587149][ T45] ret_from_fork_asm+0x1a/0x30 [ 227.587201][ T45] [ 227.587305][ T45] FAULT_INJECTION: forcing a failure. [ 227.587305][ T45] name failslab, interval 1, probability 100, space 0, times -1 [ 227.593930][ T8] CPU: 0 UID: 0 PID: 8 Comm: kworker/R-netns Not tainted syzkaller #0 45964a5c932d45c81e53484b258bbb49855afb35 [ 227.593987][ T8] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 227.594032][ T8] Workqueue: netns cleanup_net [ 227.594099][ T8] Call Trace: [ 227.594116][ T8] [ 227.594133][ T8] __dump_stack+0x21/0x30 [ 227.594198][ T8] dump_stack_lvl+0x140/0x1c0 [ 227.594264][ T8] ? __cfi_dump_stack_lvl+0x10/0x10 [ 227.594335][ T8] dump_stack+0x19/0x20 [ 227.594396][ T8] should_fail_ex+0x3c2/0x510 [ 227.594460][ T8] should_failslab+0xac/0x100 [ 227.594516][ T8] kmem_cache_alloc_node_noprof+0x45/0x420 [ 227.594569][ T8] ? __kasan_check_write+0x18/0x20 [ 227.594616][ T8] ? __alloc_skb+0x10c/0x360 [ 227.594686][ T8] ? __cfi__raw_spin_lock_bh+0x10/0x10 [ 227.594730][ T8] __alloc_skb+0x10c/0x360 [ 227.594782][ T8] inet6_rt_notify+0x351/0x520 [ 227.594834][ T8] ? __cfi_inet6_rt_notify+0x10/0x10 [ 227.594888][ T8] ? call_fib_notifiers+0xa4/0xc0 [ 227.594933][ T8] fib6_del+0xba0/0xf50 [ 227.594995][ T8] ? __cfi_fib6_del+0x10/0x10 [ 227.595060][ T8] ? stack_trace_save+0xaa/0x100 [ 227.595115][ T8] ? fib6_ifdown+0x2f1/0x4f0 [ 227.595166][ T8] fib6_clean_node+0x2b9/0x560 [ 227.595231][ T8] ? __cfi_fib6_clean_node+0x10/0x10 [ 227.595302][ T8] ? preempt_schedule_common+0x2d/0x60 [ 227.595375][ T8] ? preempt_schedule+0xc5/0xe0 [ 227.595474][ T8] ? __cfi_preempt_schedule+0x10/0x10 [ 227.595551][ T8] fib6_walk_continue+0x518/0x740 [ 227.595624][ T8] __fib6_clean_all+0x2a2/0x440 [ 227.595690][ T8] ? __cfi_fib6_ifdown+0x10/0x10 [ 227.595737][ T8] ? fib6_clean_all+0x50/0x50 [ 227.595798][ T8] ? __cfi_fib6_clean_node+0x10/0x10 [ 227.595863][ T8] ? __cfi_fib6_ifdown+0x10/0x10 [ 227.595915][ T8] ? __cfi_fib6_ifdown+0x10/0x10 [ 227.595950][ T8] fib6_clean_all+0x2e/0x50 [ 227.596012][ T8] rt6_disable_ip+0x124/0x810 [ 227.596059][ T8] ? __cfi__raw_spin_lock_irqsave+0x10/0x10 [ 227.596114][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 227.596175][ T8] ? __cfi_rt6_disable_ip+0x10/0x10 [ 227.596220][ T8] ? pneigh_queue_purge+0x570/0x5d0 [ 227.596286][ T8] ? __kasan_check_read+0x15/0x20 [ 227.596335][ T8] addrconf_ifdown+0x161/0x1970 [ 227.596382][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 227.596450][ T8] ? __try_to_del_timer_sync+0x2e8/0x440 [ 227.596507][ T8] ? addrconf_cleanup+0x150/0x150 [ 227.596557][ T8] ? __kasan_check_write+0x18/0x20 [ 227.596604][ T8] ? mutex_unlock+0x90/0x240 [ 227.596660][ T8] ? __cfi_mutex_unlock+0x10/0x10 [ 227.596729][ T8] ? __cfi_device_cmp+0x10/0x10 [ 227.596796][ T8] ? masq_device_event+0xe0/0xe0 [ 227.596884][ T8] addrconf_notify+0x17a/0xeb0 [ 227.596948][ T8] ? ip6mr_device_event+0x1ed/0x230 [ 227.596993][ T8] ? __cfi_addrconf_notify+0x10/0x10 [ 227.597048][ T8] notifier_call_chain+0x106/0x2b0 [ 227.597101][ T8] raw_notifier_call_chain+0x31/0x40 [ 227.597147][ T8] dev_close_many+0x332/0x4f0 [ 227.597192][ T8] ? __cfi_dev_close_many+0x10/0x10 [ 227.597245][ T8] ? __kasan_check_read+0x15/0x20 [ 227.597295][ T8] unregister_netdevice_many_notify+0x4bd/0x1be0 [ 227.597360][ T8] ? __cfi_unregister_netdevice_many_notify+0x10/0x10 [ 227.597425][ T8] ? __kasan_check_read+0x15/0x20 [ 227.597491][ T8] ? __kasan_check_read+0x15/0x20 [ 227.597537][ T8] ? unregister_netdevice_queue+0x18a/0x350 [ 227.597601][ T8] default_device_exit_batch+0x845/0x8d0 [ 227.597674][ T8] ? mutex_lock+0x97/0x1d0 [ 227.597737][ T8] ? __cfi_mutex_lock+0x10/0x10 [ 227.597788][ T8] ? __cfi_default_device_exit_batch+0x10/0x10 [ 227.597861][ T8] ? rtnl_unlock+0x12/0x20 [ 227.597931][ T8] ? __cfi_default_device_exit_batch+0x10/0x10 [ 227.597993][ T8] cleanup_net+0x744/0xc90 [ 227.598052][ T8] ? __cfi_cleanup_net+0x10/0x10 [ 227.598107][ T8] ? __set_cpus_allowed_ptr+0x1d6/0x2c0 [ 227.598169][ T8] ? __cfi___set_cpus_allowed_ptr+0x10/0x10 [ 227.598237][ T8] ? kick_pool+0xad/0x540 [ 227.598304][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 227.598379][ T8] process_scheduled_works+0x7f7/0x1060 [ 227.598437][ T8] rescuer_thread+0xce5/0x1620 [ 227.598500][ T8] ? _raw_spin_lock_irqsave+0xc1/0x160 [ 227.598567][ T8] kthread+0x2c7/0x360 [ 227.598617][ T8] ? __cfi_rescuer_thread+0x10/0x10 [ 227.598670][ T8] ? __cfi_kthread+0x10/0x10 [ 227.598734][ T8] ret_from_fork+0x67/0xa0 [ 227.598804][ T8] ? __cfi_kthread+0x10/0x10 [ 227.598860][ T8] ret_from_fork_asm+0x1a/0x30 [ 227.598906][ T8] [ 227.598974][ T8] FAULT_INJECTION: forcing a failure. [ 227.598974][ T8] name failslab, interval 1, probability 100, space 0, times -1 [ 227.601832][ T45] CPU: 1 UID: 0 PID: 45 Comm: kworker/1:1 Not tainted syzkaller #0 45964a5c932d45c81e53484b258bbb49855afb35 [ 227.601863][ T45] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 227.601880][ T45] Workqueue: events_power_efficient neigh_periodic_work [ 227.601966][ T45] Call Trace: [ 227.601993][ T45] [ 227.602020][ T45] __dump_stack+0x21/0x30 [ 227.602103][ T45] dump_stack_lvl+0x140/0x1c0 [ 227.602188][ T45] ? __cfi_dump_stack_lvl+0x10/0x10 [ 227.602271][ T45] ? __kasan_check_write+0x18/0x20 [ 227.602335][ T45] ? llist_del_first+0x114/0x180 [ 227.602399][ T45] dump_stack+0x19/0x20 [ 227.602469][ T45] should_fail_ex+0x3c2/0x510 [ 227.602533][ T45] should_failslab+0xac/0x100 [ 227.602592][ T45] kmem_cache_alloc_node_noprof+0x45/0x420 [ 227.602664][ T45] ? __alloc_skb+0x10c/0x360 [ 227.602741][ T45] __alloc_skb+0x10c/0x360 [ 227.602844][ T45] __neigh_notify+0x83/0x140 [ 227.602917][ T45] neigh_cleanup_and_release+0x2c/0x1a0 [ 227.602990][ T45] neigh_periodic_work+0x9b7/0xbb0 [ 227.603060][ T45] process_scheduled_works+0x7f7/0x1060 [ 227.603118][ T45] worker_thread+0xc99/0x13f0 [ 227.603178][ T45] kthread+0x2c7/0x360 [ 227.603233][ T45] ? __cfi_worker_thread+0x10/0x10 [ 227.603288][ T45] ? __cfi_kthread+0x10/0x10 [ 227.603342][ T45] ret_from_fork+0x67/0xa0 [ 227.603436][ T45] ? __cfi_kthread+0x10/0x10 [ 227.603499][ T45] ret_from_fork_asm+0x1a/0x30 [ 227.603553][ T45] [ 227.603621][ T39] CPU: 1 UID: 0 PID: 39 Comm: kworker/R-write Not tainted syzkaller #0 45964a5c932d45c81e53484b258bbb49855afb35 [ 227.603682][ T39] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 227.603717][ T39] Workqueue: writeback wb_workfn (flush-8:0) [ 227.603778][ T39] Call Trace: [ 227.603790][ T39] [ 227.603807][ T39] __dump_stack+0x21/0x30 [ 227.603870][ T39] dump_stack_lvl+0x140/0x1c0 [ 227.603949][ T39] ? __cfi_dump_stack_lvl+0x10/0x10 [ 227.604019][ T39] dump_stack+0x19/0x20 [ 227.604076][ T39] should_fail_ex+0x3c2/0x510 [ 227.604137][ T39] should_failslab+0xac/0x100 [ 227.604199][ T39] kmem_cache_alloc_noprof+0x42/0x410 [ 227.604245][ T39] ? ext4_init_io_end+0x44/0x1b0 [ 227.604316][ T39] ext4_init_io_end+0x44/0x1b0 [ 227.604380][ T39] ext4_do_writepages+0xac8/0x39f0 [ 227.604442][ T39] ? ext4_normal_submit_inode_data_buffers+0x270/0x270 [ 227.604514][ T39] ext4_writepages+0x28c/0x550 [ 227.604577][ T39] ? __cfi_ext4_writepages+0x10/0x10 [ 227.604643][ T39] ? __cfi__raw_spin_lock+0x10/0x10 [ 227.604696][ T39] ? __cfi_ext4_writepages+0x10/0x10 [ 227.604776][ T39] do_writepages+0x3d7/0x7f0 [ 227.604872][ T39] ? __cfi_do_writepages+0x10/0x10 [ 227.604937][ T39] ? __kasan_check_read+0x15/0x20 [ 227.604990][ T39] ? inode_io_list_move_locked+0x3b3/0x450 [ 227.605051][ T39] ? __kasan_check_write+0x18/0x20 [ 227.605099][ T39] ? _raw_spin_lock+0x92/0x120 [ 227.605157][ T39] __writeback_single_inode+0xc8/0xba0 [ 227.605205][ T39] ? locked_inode_to_wb_and_lock_list+0x1ff/0x2d0 [ 227.605268][ T39] writeback_sb_inodes+0x6a5/0xfb0 [ 227.605336][ T39] ? queue_io+0x690/0x690 [ 227.605405][ T39] ? __kasan_check_read+0x15/0x20 [ 227.605464][ T39] ? queue_io+0x3d9/0x690 [ 227.605526][ T39] __writeback_inodes_wb+0x129/0x280 [ 227.605589][ T39] writeback_inodes_wb+0x198/0x250 [ 227.605642][ T39] ? trace_writeback_pages_written+0x100/0x100 [ 227.605704][ T39] ? kthread_data+0x54/0xc0 [ 227.605749][ T39] wb_workfn+0xea1/0xef0 [ 227.605797][ T39] ? release_user_cpus_ptr+0x60/0x60 [ 227.605851][ T39] ? __kasan_check_write+0x18/0x20 [ 227.605902][ T39] ? _raw_spin_lock+0x92/0x120 [ 227.605963][ T39] ? __cfi_wb_workfn+0x10/0x10 [ 227.606010][ T39] ? _raw_spin_unlock+0x45/0x60 [ 227.606069][ T39] ? __set_cpus_allowed_ptr+0x1d6/0x2c0 [ 227.606123][ T39] ? __cfi___set_cpus_allowed_ptr+0x10/0x10 [ 227.606194][ T39] ? kick_pool+0xad/0x540 [ 227.606267][ T39] process_scheduled_works+0x7f7/0x1060 [ 227.606334][ T39] rescuer_thread+0xce5/0x1620 [ 227.606400][ T39] ? _raw_spin_lock_irqsave+0xc1/0x160 [ 227.606467][ T39] kthread+0x2c7/0x360 [ 227.606520][ T39] ? __cfi_rescuer_thread+0x10/0x10 [ 227.606569][ T39] ? __cfi_kthread+0x10/0x10 [ 227.606630][ T39] ret_from_fork+0x67/0xa0 [ 227.606693][ T39] ? __cfi_kthread+0x10/0x10 [ 227.606747][ T39] ret_from_fork_asm+0x1a/0x30 [ 227.606801][ T39] [ 227.606838][ T39] FAULT_INJECTION: forcing a failure. [ 227.606838][ T39] name failslab, interval 1, probability 100, space 0, times -1 [ 227.609955][ T8] CPU: 0 UID: 0 PID: 8 Comm: kworker/R-netns Not tainted syzkaller #0 45964a5c932d45c81e53484b258bbb49855afb35 [ 227.609981][ T8] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 227.609995][ T8] Workqueue: netns cleanup_net [ 227.610018][ T8] Call Trace: [ 227.610025][ T8] [ 227.610048][ T8] __dump_stack+0x21/0x30 [ 227.610136][ T8] dump_stack_lvl+0x140/0x1c0 [ 227.610192][ T8] ? __cfi_dump_stack_lvl+0x10/0x10 [ 227.610271][ T8] dump_stack+0x19/0x20 [ 227.610329][ T8] should_fail_ex+0x3c2/0x510 [ 227.610404][ T8] should_failslab+0xac/0x100 [ 227.610471][ T8] kmem_cache_alloc_node_noprof+0x45/0x420 [ 227.610513][ T8] ? __kasan_check_write+0x18/0x20 [ 227.610558][ T8] ? __alloc_skb+0x10c/0x360 [ 227.610623][ T8] ? __cfi__raw_spin_lock_bh+0x10/0x10 [ 227.610677][ T8] __alloc_skb+0x10c/0x360 [ 227.610748][ T8] inet6_rt_notify+0x351/0x520 [ 227.610797][ T8] ? __cfi_inet6_rt_notify+0x10/0x10 [ 227.610855][ T8] ? call_fib_notifiers+0xa4/0xc0 [ 227.610892][ T8] fib6_del+0xba0/0xf50 [ 227.610972][ T8] ? __cfi_fib6_del+0x10/0x10 [ 227.611034][ T8] ? stack_trace_save+0xaa/0x100 [ 227.611096][ T8] ? fib6_ifdown+0x2f1/0x4f0 [ 227.611143][ T8] fib6_clean_node+0x2b9/0x560 [ 227.611217][ T8] ? __cfi_fib6_clean_node+0x10/0x10 [ 227.611283][ T8] ? preempt_schedule_common+0x2d/0x60 [ 227.611334][ T8] ? preempt_schedule+0xc5/0xe0 [ 227.611390][ T8] ? __cfi_preempt_schedule+0x10/0x10 [ 227.611460][ T8] fib6_walk_continue+0x518/0x740 [ 227.611556][ T8] __fib6_clean_all+0x2a2/0x440 [ 227.611664][ T8] ? __cfi_fib6_ifdown+0x10/0x10 [ 227.611728][ T8] ? fib6_clean_all+0x50/0x50 [ 227.611802][ T8] ? __cfi_fib6_clean_node+0x10/0x10 [ 227.611884][ T8] ? __cfi_fib6_ifdown+0x10/0x10 [ 227.611940][ T8] ? __cfi_fib6_ifdown+0x10/0x10 [ 227.611995][ T8] fib6_clean_all+0x2e/0x50 [ 227.612067][ T8] rt6_disable_ip+0x124/0x810 [ 227.612132][ T8] ? __cfi__raw_spin_lock_irqsave+0x10/0x10 [ 227.612204][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 227.612273][ T8] ? __cfi_rt6_disable_ip+0x10/0x10 [ 227.612333][ T8] ? pneigh_queue_purge+0x570/0x5d0 [ 227.612406][ T8] ? __kasan_check_read+0x15/0x20 [ 227.612469][ T8] addrconf_ifdown+0x161/0x1970 [ 227.612529][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 227.612595][ T8] ? __try_to_del_timer_sync+0x2e8/0x440 [ 227.612676][ T8] ? addrconf_cleanup+0x150/0x150 [ 227.612729][ T8] ? __kasan_check_write+0x18/0x20 [ 227.612784][ T8] ? mutex_unlock+0x90/0x240 [ 227.612890][ T8] ? __cfi_mutex_unlock+0x10/0x10 [ 227.612981][ T8] ? __cfi_device_cmp+0x10/0x10 [ 227.613043][ T8] ? masq_device_event+0xe0/0xe0 [ 227.613103][ T8] addrconf_notify+0x17a/0xeb0 [ 227.613161][ T8] ? ip6mr_device_event+0x1ed/0x230 [ 227.613207][ T8] ? __cfi_addrconf_notify+0x10/0x10 [ 227.613261][ T8] notifier_call_chain+0x106/0x2b0 [ 227.613314][ T8] raw_notifier_call_chain+0x31/0x40 [ 227.613361][ T8] dev_close_many+0x332/0x4f0 [ 227.613407][ T8] ? __cfi_dev_close_many+0x10/0x10 [ 227.613468][ T8] ? __kasan_check_read+0x15/0x20 [ 227.613515][ T8] unregister_netdevice_many_notify+0x4bd/0x1be0 [ 227.613586][ T8] ? __cfi_unregister_netdevice_many_notify+0x10/0x10 [ 227.613651][ T8] ? __kasan_check_read+0x15/0x20 [ 227.613701][ T8] ? __kasan_check_read+0x15/0x20 [ 227.613747][ T8] ? unregister_netdevice_queue+0x18a/0x350 [ 227.613810][ T8] default_device_exit_batch+0x845/0x8d0 [ 227.613884][ T8] ? mutex_lock+0x97/0x1d0 [ 227.613940][ T8] ? __cfi_mutex_lock+0x10/0x10 [ 227.613999][ T8] ? __cfi_default_device_exit_batch+0x10/0x10 [ 227.614071][ T8] ? rtnl_unlock+0x12/0x20 [ 227.614134][ T8] ? __cfi_default_device_exit_batch+0x10/0x10 [ 227.614207][ T8] cleanup_net+0x744/0xc90 [ 227.614268][ T8] ? __cfi_cleanup_net+0x10/0x10 [ 227.614341][ T8] ? __set_cpus_allowed_ptr+0x1d6/0x2c0 [ 227.614382][ T8] ? __cfi___set_cpus_allowed_ptr+0x10/0x10 [ 227.614430][ T8] ? kick_pool+0xad/0x540 [ 227.614492][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 227.614549][ T8] process_scheduled_works+0x7f7/0x1060 [ 227.614605][ T8] rescuer_thread+0xce5/0x1620 [ 227.614670][ T8] ? _raw_spin_lock_irqsave+0xc1/0x160 [ 227.614755][ T8] kthread+0x2c7/0x360 [ 227.614812][ T8] ? __cfi_rescuer_thread+0x10/0x10 [ 227.614870][ T8] ? __cfi_kthread+0x10/0x10 [ 227.614929][ T8] ret_from_fork+0x67/0xa0 [ 227.614992][ T8] ? __cfi_kthread+0x10/0x10 [ 227.615050][ T8] ret_from_fork_asm+0x1a/0x30 [ 227.615107][ T8] [ 227.615287][ T8] FAULT_INJECTION: forcing a failure. [ 227.615287][ T8] name failslab, interval 1, probability 100, space 0, times -1 [ 227.618088][ T39] CPU: 1 UID: 0 PID: 39 Comm: kworker/R-write Not tainted syzkaller #0 45964a5c932d45c81e53484b258bbb49855afb35 [ 227.618115][ T39] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 227.618129][ T39] Workqueue: writeback wb_workfn (flush-8:0) [ 227.618162][ T39] Call Trace: [ 227.618190][ T39] [ 227.618214][ T39] __dump_stack+0x21/0x30 [ 227.618313][ T39] dump_stack_lvl+0x140/0x1c0 [ 227.618378][ T39] ? __cfi_dump_stack_lvl+0x10/0x10 [ 227.618453][ T39] dump_stack+0x19/0x20 [ 227.618523][ T39] should_fail_ex+0x3c2/0x510 [ 227.618579][ T39] should_failslab+0xac/0x100 [ 227.618634][ T39] kmem_cache_alloc_noprof+0x42/0x410 [ 227.618685][ T39] ? ext4_init_io_end+0x44/0x1b0 [ 227.618750][ T39] ext4_init_io_end+0x44/0x1b0 [ 227.618819][ T39] ext4_do_writepages+0xac8/0x39f0 [ 227.618884][ T39] ? ext4_normal_submit_inode_data_buffers+0x270/0x270 [ 227.618967][ T39] ext4_writepages+0x28c/0x550 [ 227.619029][ T39] ? __cfi_ext4_writepages+0x10/0x10 [ 227.619094][ T39] ? __cfi__raw_spin_lock+0x10/0x10 [ 227.619148][ T39] ? __cfi_ext4_writepages+0x10/0x10 [ 227.619226][ T39] do_writepages+0x3d7/0x7f0 [ 227.619320][ T39] ? __cfi_do_writepages+0x10/0x10 [ 227.619389][ T39] ? __kasan_check_read+0x15/0x20 [ 227.619433][ T39] ? inode_io_list_move_locked+0x3b3/0x450 [ 227.619484][ T39] ? __kasan_check_write+0x18/0x20 [ 227.619536][ T39] ? _raw_spin_lock+0x92/0x120 [ 227.619594][ T39] __writeback_single_inode+0xc8/0xba0 [ 227.619679][ T39] ? locked_inode_to_wb_and_lock_list+0x1ff/0x2d0 [ 227.619756][ T39] writeback_sb_inodes+0x6a5/0xfb0 [ 227.619822][ T39] ? queue_io+0x690/0x690 [ 227.619892][ T39] ? __kasan_check_read+0x15/0x20 [ 227.619956][ T39] ? queue_io+0x3d9/0x690 [ 227.620015][ T39] __writeback_inodes_wb+0x129/0x280 [ 227.620088][ T39] writeback_inodes_wb+0x198/0x250 [ 227.620144][ T39] ? trace_writeback_pages_written+0x100/0x100 [ 227.620206][ T39] ? kthread_data+0x54/0xc0 [ 227.620263][ T39] wb_workfn+0xea1/0xef0 [ 227.620313][ T39] ? release_user_cpus_ptr+0x60/0x60 [ 227.620378][ T39] ? __kasan_check_write+0x18/0x20 [ 227.620427][ T39] ? _raw_spin_lock+0x92/0x120 [ 227.620488][ T39] ? __cfi_wb_workfn+0x10/0x10 [ 227.620551][ T39] ? _raw_spin_unlock+0x45/0x60 [ 227.620611][ T39] ? __set_cpus_allowed_ptr+0x1d6/0x2c0 [ 227.620663][ T39] ? __cfi___set_cpus_allowed_ptr+0x10/0x10 [ 227.620720][ T39] ? kick_pool+0xad/0x540 [ 227.620781][ T39] process_scheduled_works+0x7f7/0x1060 [ 227.620848][ T39] rescuer_thread+0xce5/0x1620 [ 227.620913][ T39] ? _raw_spin_lock_irqsave+0xc1/0x160 [ 227.620990][ T39] kthread+0x2c7/0x360 [ 227.621070][ T39] ? __cfi_rescuer_thread+0x10/0x10 [ 227.621138][ T39] ? __cfi_kthread+0x10/0x10 [ 227.621203][ T39] ret_from_fork+0x67/0xa0 [ 227.621273][ T39] ? __cfi_kthread+0x10/0x10 [ 227.621331][ T39] ret_from_fork_asm+0x1a/0x30 [ 227.621386][ T39] [ 227.621483][ T37] ? __sched_text_start+0x10/0x10 [ 227.625512][ T8] CPU: 0 UID: 0 PID: 8 Comm: kworker/R-netns Not tainted syzkaller #0 45964a5c932d45c81e53484b258bbb49855afb35 [ 227.625541][ T8] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 227.625556][ T8] Workqueue: netns cleanup_net [ 227.625638][ T8] Call Trace: [ 227.625661][ T8] [ 227.625684][ T8] __dump_stack+0x21/0x30 [ 227.625754][ T8] dump_stack_lvl+0x140/0x1c0 [ 227.625824][ T8] ? __cfi_dump_stack_lvl+0x10/0x10 [ 227.625889][ T8] ? _raw_spin_lock+0x92/0x120 [ 227.625945][ T8] dump_stack+0x19/0x20 [ 227.626003][ T8] should_fail_ex+0x3c2/0x510 [ 227.626057][ T8] should_failslab+0xac/0x100 [ 227.626116][ T8] kmem_cache_alloc_node_noprof+0x45/0x420 [ 227.626164][ T8] ? __alloc_skb+0x10c/0x360 [ 227.626227][ T8] ? __rcu_read_unlock+0xc0/0xc0 [ 227.626298][ T8] __alloc_skb+0x10c/0x360 [ 227.626359][ T8] __neigh_notify+0x83/0x140 [ 227.626422][ T8] neigh_cleanup_and_release+0x2c/0x1a0 [ 227.626496][ T8] neigh_flush_dev+0x79c/0x950 [ 227.626549][ T8] ? __kasan_check_write+0x18/0x20 [ 227.626602][ T8] __neigh_ifdown+0x45/0x470 [ 227.626657][ T8] neigh_ifdown+0x23/0x30 [ 227.626711][ T8] rt6_disable_ip+0x79e/0x810 [ 227.626771][ T8] ? __cfi__raw_spin_lock_irqsave+0x10/0x10 [ 227.626826][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 227.626880][ T8] ? __cfi_rt6_disable_ip+0x10/0x10 [ 227.626928][ T8] ? pneigh_queue_purge+0x570/0x5d0 [ 227.627000][ T8] ? __kasan_check_read+0x15/0x20 [ 227.627062][ T8] addrconf_ifdown+0x161/0x1970 [ 227.627135][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 227.627190][ T8] ? __try_to_del_timer_sync+0x2e8/0x440 [ 227.627246][ T8] ? addrconf_cleanup+0x150/0x150 [ 227.627292][ T8] ? __kasan_check_write+0x18/0x20 [ 227.627343][ T8] ? mutex_unlock+0x90/0x240 [ 227.627401][ T8] ? __cfi_mutex_unlock+0x10/0x10 [ 227.627494][ T8] ? __cfi_device_cmp+0x10/0x10 [ 227.627560][ T8] ? masq_device_event+0xe0/0xe0 [ 227.627622][ T8] addrconf_notify+0x17a/0xeb0 [ 227.627674][ T8] ? ip6mr_device_event+0x1ed/0x230 [ 227.627740][ T8] ? __cfi_addrconf_notify+0x10/0x10 [ 227.627798][ T8] notifier_call_chain+0x106/0x2b0 [ 227.627844][ T8] raw_notifier_call_chain+0x31/0x40 [ 227.627891][ T8] dev_close_many+0x332/0x4f0 [ 227.627943][ T8] ? __cfi_dev_close_many+0x10/0x10 [ 227.627991][ T8] ? __kasan_check_read+0x15/0x20 [ 227.628042][ T8] unregister_netdevice_many_notify+0x4bd/0x1be0 [ 227.628106][ T8] ? __cfi_unregister_netdevice_many_notify+0x10/0x10 [ 227.628159][ T8] ? __kasan_check_read+0x15/0x20 [ 227.628210][ T8] ? __kasan_check_read+0x15/0x20 [ 227.628258][ T8] ? unregister_netdevice_queue+0x18a/0x350 [ 227.628349][ T8] default_device_exit_batch+0x845/0x8d0 [ 227.628432][ T8] ? mutex_lock+0x97/0x1d0 [ 227.628531][ T8] ? __cfi_mutex_lock+0x10/0x10 [ 227.628596][ T8] ? __cfi_default_device_exit_batch+0x10/0x10 [ 227.628682][ T8] ? rtnl_unlock+0x12/0x20 [ 227.628746][ T8] ? __cfi_default_device_exit_batch+0x10/0x10 [ 227.628816][ T8] cleanup_net+0x744/0xc90 [ 227.628871][ T8] ? __cfi_cleanup_net+0x10/0x10 [ 227.628957][ T8] ? __set_cpus_allowed_ptr+0x1d6/0x2c0 [ 227.629014][ T8] ? __cfi___set_cpus_allowed_ptr+0x10/0x10 [ 227.629065][ T8] ? kick_pool+0xad/0x540 [ 227.629128][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 227.629187][ T8] process_scheduled_works+0x7f7/0x1060 [ 227.629251][ T8] rescuer_thread+0xce5/0x1620 [ 227.629308][ T8] ? _raw_spin_lock_irqsave+0xc1/0x160 [ 227.629382][ T8] kthread+0x2c7/0x360 [ 227.629449][ T8] ? __cfi_rescuer_thread+0x10/0x10 [ 227.629506][ T8] ? __cfi_kthread+0x10/0x10 [ 227.629573][ T8] ret_from_fork+0x67/0xa0 [ 227.629644][ T8] ? __cfi_kthread+0x10/0x10 [ 227.629699][ T8] ret_from_fork_asm+0x1a/0x30 [ 227.629747][ T8] [ 227.629938][ T8] FAULT_INJECTION: forcing a failure. [ 227.629938][ T8] name failslab, interval 1, probability 100, space 0, times -1 [ 227.633464][ T286] CPU: 1 UID: 0 PID: 286 Comm: syz-executor Not tainted syzkaller #0 45964a5c932d45c81e53484b258bbb49855afb35 [ 227.633491][ T286] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 227.633530][ T286] Call Trace: [ 227.633553][ T286] [ 227.633582][ T286] __dump_stack+0x21/0x30 [ 227.633664][ T286] dump_stack_lvl+0x140/0x1c0 [ 227.633728][ T286] ? __cfi_dump_stack_lvl+0x10/0x10 [ 227.633790][ T286] ? dequeue_entity+0x88a/0x13b0 [ 227.633860][ T286] dump_stack+0x19/0x20 [ 227.633925][ T286] should_fail_ex+0x3c2/0x510 [ 227.633988][ T286] should_failslab+0xac/0x100 [ 227.634042][ T286] kmem_cache_alloc_node_noprof+0x45/0x420 [ 227.634096][ T286] ? dequeue_entities+0x1d2/0x1370 [ 227.634166][ T286] ? __alloc_skb+0x10c/0x360 [ 227.634229][ T286] __alloc_skb+0x10c/0x360 [ 227.634292][ T286] ? tcp_current_mss+0x539/0x8b0 [ 227.634337][ T286] tcp_stream_alloc_skb+0x43/0x370 [ 227.634387][ T286] tcp_sendmsg_locked+0xcbc/0x4ac0 [ 227.634434][ T286] ? avc_has_perm_noaudit+0x289/0x360 [ 227.634503][ T286] ? __kasan_check_write+0x18/0x20 [ 227.634622][ T286] ? __cfi__raw_spin_lock_bh+0x10/0x10 [ 227.634712][ T286] ? __kasan_check_write+0x18/0x20 [ 227.634776][ T286] ? __cfi_tcp_sendmsg_locked+0x10/0x10 [ 227.634837][ T286] ? avc_has_perm+0x155/0x240 [ 227.634907][ T286] ? hrtimer_reprogram+0x336/0x3d0 [ 227.635022][ T286] ? __cfi_tcp_sendmsg+0x10/0x10 [ 227.635096][ T286] tcp_sendmsg+0x3e/0xd0 [ 227.635149][ T286] ? __cfi_tcp_sendmsg+0x10/0x10 [ 227.635209][ T286] inet_sendmsg+0xb7/0x120 [ 227.635273][ T286] ? __cfi_inet_sendmsg+0x10/0x10 [ 227.635343][ T286] sock_write_iter+0x3bf/0x490 [ 227.635408][ T286] ? __cfi_sock_write_iter+0x10/0x10 [ 227.635474][ T286] ? usleep_range_state+0x150/0x150 [ 227.635537][ T286] vfs_write+0x762/0xfd0 [ 227.635597][ T286] ? __cfi_vfs_write+0x10/0x10 [ 227.635659][ T286] ? _copy_from_user+0x87/0xa0 [ 227.635741][ T286] ? __kasan_check_read+0x15/0x20 [ 227.635803][ T286] ksys_write+0x145/0x260 [ 227.635876][ T286] ? xfd_validate_state+0x68/0x140 [ 227.635947][ T286] ? __cfi_ksys_write+0x10/0x10 [ 227.636000][ T286] ? __kasan_check_write+0x18/0x20 [ 227.636045][ T286] ? fpregs_restore_userregs+0x11c/0x260 [ 227.636108][ T286] __x64_sys_write+0x7f/0x90 [ 227.636162][ T286] x64_sys_call+0x271c/0x2ee0 [ 227.636206][ T286] do_syscall_64+0x57/0xf0 [ 227.636261][ T286] ? clear_bhb_loop+0x50/0xa0 [ 227.636331][ T286] entry_SYSCALL_64_after_hwframe+0x76/0x7e [ 227.636415][ T286] RIP: 0033:0x7f8f10159017 [ 227.636459][ T286] Code: 48 89 fa 4c 89 df e8 a8 56 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff [ 227.636504][ T286] RSP: 002b:00007ffd93487580 EFLAGS: 00000202 ORIG_RAX: 0000000000000001 [ 227.636554][ T286] RAX: ffffffffffffffda RBX: 000055555ad48500 RCX: 00007f8f10159017 [ 227.636592][ T286] RDX: 0000000000000140 RSI: 00007f8f0d1ffec0 RDI: 0000000000000003 [ 227.636626][ T286] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 227.636655][ T286] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000140 [ 227.636679][ T286] R13: 000055555ad600a0 R14: 00007ffd93487b20 R15: 00007f8f0d1ffec0 [ 227.636717][ T286] [ 227.636812][ T12] CPU: 1 UID: 0 PID: 12 Comm: kworker/u8:0 Not tainted syzkaller #0 45964a5c932d45c81e53484b258bbb49855afb35 [ 227.636874][ T12] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 227.636903][ T12] Workqueue: wg-kex-wg1 wg_packet_handshake_send_worker [ 227.636981][ T12] Call Trace: [ 227.636993][ T12] [ 227.637011][ T12] __dump_stack+0x21/0x30 [ 227.637081][ T12] dump_stack_lvl+0x140/0x1c0 [ 227.637161][ T12] ? __cfi_dump_stack_lvl+0x10/0x10 [ 227.637223][ T12] ? calc_wheel_index+0x1b9/0x8f0 [ 227.637291][ T12] ? __kasan_check_write+0x18/0x20 [ 227.637347][ T12] ? timer_update_keys+0xd0/0xd0 [ 227.637428][ T12] dump_stack+0x19/0x20 [ 227.637490][ T12] should_fail_ex+0x3c2/0x510 [ 227.637560][ T12] should_failslab+0xac/0x100 [ 227.637625][ T12] kmem_cache_alloc_node_noprof+0x45/0x420 [ 227.637680][ T12] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 227.637750][ T12] ? __alloc_skb+0x10c/0x360 [ 227.637842][ T12] ? __mod_timer+0x881/0xd20 [ 227.637900][ T12] __alloc_skb+0x10c/0x360 [ 227.637983][ T12] wg_socket_send_buffer_to_peer+0x3b/0x170 [ 227.638052][ T12] ? ktime_get_coarse_with_offset+0x157/0x1a0 [ 227.638112][ T12] wg_packet_handshake_send_worker+0x204/0x2a0 [ 227.638179][ T12] ? __cfi_wg_packet_handshake_send_worker+0x10/0x10 [ 227.638254][ T12] ? _raw_spin_lock_irq+0x93/0x120 [ 227.638313][ T12] ? kick_pool+0xad/0x540 [ 227.638382][ T12] process_scheduled_works+0x7f7/0x1060 [ 227.638438][ T12] worker_thread+0xc99/0x13f0 [ 227.638495][ T12] kthread+0x2c7/0x360 [ 227.638547][ T12] ? __cfi_worker_thread+0x10/0x10 [ 227.638594][ T12] ? __cfi_kthread+0x10/0x10 [ 227.638654][ T12] ret_from_fork+0x67/0xa0 [ 227.638718][ T12] ? __cfi_kthread+0x10/0x10 [ 227.638772][ T12] ret_from_fork_asm+0x1a/0x30 [ 227.638823][ T12] [ 227.639349][ T12] FAULT_INJECTION: forcing a failure. [ 227.639349][ T12] name failslab, interval 1, probability 100, space 0, times -1 [ 227.641934][ T8] CPU: 0 UID: 0 PID: 8 Comm: kworker/R-netns Not tainted syzkaller #0 45964a5c932d45c81e53484b258bbb49855afb35 [ 227.641966][ T8] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 227.641981][ T8] Workqueue: netns cleanup_net [ 227.642077][ T8] Call Trace: [ 227.642104][ T8] [ 227.642119][ T8] __dump_stack+0x21/0x30 [ 227.642217][ T8] dump_stack_lvl+0x140/0x1c0 [ 227.642291][ T8] ? __cfi_dump_stack_lvl+0x10/0x10 [ 227.642372][ T8] ? __kasan_check_read+0x15/0x20 [ 227.642443][ T8] dump_stack+0x19/0x20 [ 227.642517][ T8] should_fail_ex+0x3c2/0x510 [ 227.642589][ T8] should_failslab+0xac/0x100 [ 227.642662][ T8] kmem_cache_alloc_node_noprof+0x45/0x420 [ 227.642723][ T8] ? __cfi__raw_spin_lock_irqsave+0x10/0x10 [ 227.642798][ T8] ? __alloc_skb+0x10c/0x360 [ 227.642875][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 227.642931][ T8] __alloc_skb+0x10c/0x360 [ 227.642999][ T8] __ipv6_ifa_notify+0x205/0xee0 [ 227.643051][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 227.643107][ T8] ? snmp6_fill_stats+0x9b0/0x9b0 [ 227.643161][ T8] ? timer_delete+0x101/0x3e0 [ 227.643215][ T8] ? __kasan_check_write+0x18/0x20 [ 227.643268][ T8] ? work_grab_pending+0x301/0x830 [ 227.643323][ T8] ? neigh_ifdown+0x23/0x30 [ 227.643378][ T8] ? rt6_disable_ip+0x79e/0x810 [ 227.643431][ T8] ? mod_delayed_work_on+0x140/0x140 [ 227.643518][ T8] ? __kasan_check_write+0x18/0x20 [ 227.643573][ T8] ? _raw_spin_lock_bh+0x96/0x130 [ 227.643627][ T8] ? __cfi__raw_spin_lock_bh+0x10/0x10 [ 227.643680][ T8] ? __cancel_work+0x175/0x1f0 [ 227.643743][ T8] addrconf_ifdown+0xe01/0x1970 [ 227.643796][ T8] ? addrconf_cleanup+0x150/0x150 [ 227.643841][ T8] ? __kasan_check_write+0x18/0x20 [ 227.643895][ T8] ? mutex_unlock+0x90/0x240 [ 227.643962][ T8] ? __cfi_mutex_unlock+0x10/0x10 [ 227.644023][ T8] ? __cfi_device_cmp+0x10/0x10 [ 227.644080][ T8] ? masq_device_event+0xe0/0xe0 [ 227.644143][ T8] addrconf_notify+0x17a/0xeb0 [ 227.644195][ T8] ? ip6mr_device_event+0x1ed/0x230 [ 227.644242][ T8] ? __cfi_addrconf_notify+0x10/0x10 [ 227.644297][ T8] notifier_call_chain+0x106/0x2b0 [ 227.644342][ T8] raw_notifier_call_chain+0x31/0x40 [ 227.644395][ T8] dev_close_many+0x332/0x4f0 [ 227.644444][ T8] ? __cfi_dev_close_many+0x10/0x10 [ 227.644498][ T8] ? __kasan_check_read+0x15/0x20 [ 227.644544][ T8] unregister_netdevice_many_notify+0x4bd/0x1be0 [ 227.644616][ T8] ? __cfi_unregister_netdevice_many_notify+0x10/0x10 [ 227.644681][ T8] ? __kasan_check_read+0x15/0x20 [ 227.644728][ T8] ? __kasan_check_read+0x15/0x20 [ 227.644774][ T8] ? unregister_netdevice_queue+0x18a/0x350 [ 227.644852][ T8] default_device_exit_batch+0x845/0x8d0 [ 227.644942][ T8] ? mutex_lock+0x97/0x1d0 [ 227.645008][ T8] ? __cfi_mutex_lock+0x10/0x10 [ 227.645070][ T8] ? __cfi_default_device_exit_batch+0x10/0x10 [ 227.645148][ T8] ? rtnl_unlock+0x12/0x20 [ 227.645213][ T8] ? __cfi_default_device_exit_batch+0x10/0x10 [ 227.645287][ T8] cleanup_net+0x744/0xc90 [ 227.645347][ T8] ? __cfi_cleanup_net+0x10/0x10 [ 227.645401][ T8] ? __set_cpus_allowed_ptr+0x1d6/0x2c0 [ 227.645457][ T8] ? __cfi___set_cpus_allowed_ptr+0x10/0x10 [ 227.645512][ T8] ? kick_pool+0xad/0x540 [ 227.645559][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 227.645621][ T8] process_scheduled_works+0x7f7/0x1060 [ 227.645682][ T8] rescuer_thread+0xce5/0x1620 [ 227.645730][ T8] ? _raw_spin_lock_irqsave+0xc1/0x160 [ 227.645793][ T8] kthread+0x2c7/0x360 [ 227.645846][ T8] ? __cfi_rescuer_thread+0x10/0x10 [ 227.645900][ T8] ? __cfi_kthread+0x10/0x10 [ 227.645950][ T8] ret_from_fork+0x67/0xa0 [ 227.646013][ T8] ? __cfi_kthread+0x10/0x10 [ 227.646084][ T8] ret_from_fork_asm+0x1a/0x30 [ 227.646132][ T8] [ 227.646211][ T8] FAULT_INJECTION: forcing a failure. [ 227.646211][ T8] name failslab, interval 1, probability 100, space 0, times -1 [ 227.650070][ T286] FAULT_INJECTION: forcing a failure. [ 227.650070][ T286] name failslab, interval 1, probability 100, space 0, times -1 [ 227.650093][ T286] CPU: 1 UID: 0 PID: 286 Comm: syz-executor Not tainted syzkaller #0 45964a5c932d45c81e53484b258bbb49855afb35 [ 227.650155][ T286] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 227.650194][ T286] Call Trace: [ 227.650216][ T286] [ 227.650235][ T286] __dump_stack+0x21/0x30 [ 227.650309][ T286] dump_stack_lvl+0x140/0x1c0 [ 227.650379][ T286] ? __cfi_dump_stack_lvl+0x10/0x10 [ 227.650446][ T286] ? dequeue_entity+0x88a/0x13b0 [ 227.650517][ T286] dump_stack+0x19/0x20 [ 227.650580][ T286] should_fail_ex+0x3c2/0x510 [ 227.650634][ T286] should_failslab+0xac/0x100 [ 227.650689][ T286] kmem_cache_alloc_node_noprof+0x45/0x420 [ 227.650741][ T286] ? dequeue_entities+0x1d2/0x1370 [ 227.650810][ T286] ? __alloc_skb+0x10c/0x360 [ 227.650873][ T286] __alloc_skb+0x10c/0x360 [ 227.650944][ T286] ? tcp_current_mss+0x539/0x8b0 [ 227.650989][ T286] tcp_stream_alloc_skb+0x43/0x370 [ 227.651042][ T286] tcp_sendmsg_locked+0xcbc/0x4ac0 [ 227.651094][ T286] ? avc_has_perm_noaudit+0x289/0x360 [ 227.651146][ T286] ? __kasan_check_write+0x18/0x20 [ 227.651192][ T286] ? __cfi__raw_spin_lock_bh+0x10/0x10 [ 227.651244][ T286] ? __kasan_check_write+0x18/0x20 [ 227.651306][ T286] ? __cfi_tcp_sendmsg_locked+0x10/0x10 [ 227.651358][ T286] ? avc_has_perm+0x155/0x240 [ 227.651412][ T286] ? __cfi_tcp_sendmsg+0x10/0x10 [ 227.651453][ T286] tcp_sendmsg+0x3e/0xd0 [ 227.651496][ T286] ? __cfi_tcp_sendmsg+0x10/0x10 [ 227.651548][ T286] inet_sendmsg+0xb7/0x120 [ 227.651655][ T286] ? __cfi_inet_sendmsg+0x10/0x10 [ 227.651712][ T286] sock_write_iter+0x3bf/0x490 [ 227.651783][ T286] ? __cfi_sock_write_iter+0x10/0x10 [ 227.651856][ T286] ? usleep_range_state+0x150/0x150 [ 227.651926][ T286] vfs_write+0x762/0xfd0 [ 227.651998][ T286] ? __cfi_vfs_write+0x10/0x10 [ 227.652059][ T286] ? _copy_from_user+0x87/0xa0 [ 227.652141][ T286] ? __kasan_check_read+0x15/0x20 [ 227.652196][ T286] ksys_write+0x145/0x260 [ 227.652257][ T286] ? xfd_validate_state+0x68/0x140 [ 227.652339][ T286] ? __cfi_ksys_write+0x10/0x10 [ 227.652401][ T286] ? __kasan_check_write+0x18/0x20 [ 227.652456][ T286] ? fpregs_restore_userregs+0x11c/0x260 [ 227.652528][ T286] __x64_sys_write+0x7f/0x90 [ 227.652591][ T286] x64_sys_call+0x271c/0x2ee0 [ 227.652643][ T286] do_syscall_64+0x57/0xf0 [ 227.652706][ T286] ? clear_bhb_loop+0x50/0xa0 [ 227.652795][ T286] entry_SYSCALL_64_after_hwframe+0x76/0x7e [ 227.652874][ T286] RIP: 0033:0x7f8f10159017 [ 227.652912][ T286] Code: 48 89 fa 4c 89 df e8 a8 56 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff [ 227.652979][ T286] RSP: 002b:00007ffd93487580 EFLAGS: 00000202 ORIG_RAX: 0000000000000001 [ 227.653050][ T286] RAX: ffffffffffffffda RBX: 000055555ad48500 RCX: 00007f8f10159017 [ 227.653091][ T286] RDX: 0000000000000140 RSI: 00007f8f0d1ffec0 RDI: 0000000000000003 [ 227.653121][ T286] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 227.653153][ T286] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000140 [ 227.653182][ T286] R13: 000055555ad600a0 R14: 00007ffd93487b20 R15: 00007f8f0d1ffec0 [ 227.653226][ T286] [ 227.653296][ T13] CPU: 1 UID: 0 PID: 13 Comm: kworker/u8:1 Not tainted syzkaller #0 45964a5c932d45c81e53484b258bbb49855afb35 [ 227.653358][ T13] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 227.653386][ T13] Workqueue: wg-kex-wg0 wg_packet_handshake_send_worker [ 227.653451][ T13] Call Trace: [ 227.653468][ T13] [ 227.653486][ T13] __dump_stack+0x21/0x30 [ 227.653549][ T13] dump_stack_lvl+0x140/0x1c0 [ 227.653611][ T13] ? __cfi_dump_stack_lvl+0x10/0x10 [ 227.653669][ T13] ? calc_wheel_index+0x13a/0x8f0 [ 227.653726][ T13] ? __kasan_check_write+0x18/0x20 [ 227.653777][ T13] ? timer_update_keys+0xd0/0xd0 [ 227.653839][ T13] dump_stack+0x19/0x20 [ 227.653895][ T13] should_fail_ex+0x3c2/0x510 [ 227.653962][ T13] should_failslab+0xac/0x100 [ 227.654017][ T13] kmem_cache_alloc_node_noprof+0x45/0x420 [ 227.654070][ T13] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 227.654117][ T13] ? __alloc_skb+0x10c/0x360 [ 227.654180][ T13] ? __mod_timer+0x881/0xd20 [ 227.654245][ T13] __alloc_skb+0x10c/0x360 [ 227.654314][ T13] wg_socket_send_buffer_to_peer+0x3b/0x170 [ 227.654408][ T13] ? ktime_get_coarse_with_offset+0x157/0x1a0 [ 227.654474][ T13] wg_packet_handshake_send_worker+0x204/0x2a0 [ 227.654538][ T13] ? __cfi_wg_packet_handshake_send_worker+0x10/0x10 [ 227.654609][ T13] ? _raw_spin_lock_irq+0x93/0x120 [ 227.654679][ T13] ? kick_pool+0xad/0x540 [ 227.654746][ T13] process_scheduled_works+0x7f7/0x1060 [ 227.654808][ T13] worker_thread+0xc99/0x13f0 [ 227.654869][ T13] kthread+0x2c7/0x360 [ 227.654923][ T13] ? __cfi_worker_thread+0x10/0x10 [ 227.654976][ T13] ? __cfi_kthread+0x10/0x10 [ 227.655030][ T13] ret_from_fork+0x67/0xa0 [ 227.655099][ T13] ? __cfi_kthread+0x10/0x10 [ 227.655146][ T13] ret_from_fork_asm+0x1a/0x30 [ 227.655198][ T13] [ 227.655623][ T13] FAULT_INJECTION: forcing a failure. [ 227.655623][ T13] name failslab, interval 1, probability 100, space 0, times -1 [ 227.657653][ T8] CPU: 0 UID: 0 PID: 8 Comm: kworker/R-netns Not tainted syzkaller #0 45964a5c932d45c81e53484b258bbb49855afb35 [ 227.657680][ T8] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 227.657694][ T8] Workqueue: netns cleanup_net [ 227.657718][ T8] Call Trace: [ 227.657724][ T8] [ 227.657752][ T8] __dump_stack+0x21/0x30 [ 227.657845][ T8] dump_stack_lvl+0x140/0x1c0 [ 227.657915][ T8] ? __cfi_dump_stack_lvl+0x10/0x10 [ 227.657969][ T8] ? stack_trace_save+0xaa/0x100 [ 227.658020][ T8] ? stack_depot_save_flags+0x38/0x800 [ 227.658082][ T8] dump_stack+0x19/0x20 [ 227.658145][ T8] should_fail_ex+0x3c2/0x510 [ 227.658201][ T8] should_failslab+0xac/0x100 [ 227.658256][ T8] kmem_cache_alloc_node_noprof+0x45/0x420 [ 227.658310][ T8] ? kthread+0x2c7/0x360 [ 227.658358][ T8] ? ret_from_fork+0x67/0xa0 [ 227.658430][ T8] ? __alloc_skb+0x10c/0x360 [ 227.658499][ T8] __alloc_skb+0x10c/0x360 [ 227.658563][ T8] __ipv6_ifa_notify+0x205/0xee0 [ 227.658612][ T8] ? snmp6_fill_stats+0x9b0/0x9b0 [ 227.658667][ T8] ? _raw_spin_lock+0x92/0x120 [ 227.658719][ T8] ? timer_delete+0x101/0x3e0 [ 227.658767][ T8] ? __cfi__raw_spin_lock+0x10/0x10 [ 227.658827][ T8] ? __kasan_check_write+0x18/0x20 [ 227.658872][ T8] ? work_grab_pending+0x301/0x830 [ 227.658931][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 227.658991][ T8] ? kvfree_call_rcu+0x40e/0x730 [ 227.659046][ T8] ? mod_delayed_work_on+0x140/0x140 [ 227.659108][ T8] ? __kasan_check_write+0x18/0x20 [ 227.659155][ T8] ? _raw_spin_lock_bh+0x96/0x130 [ 227.659216][ T8] ? __cfi__raw_spin_lock_bh+0x10/0x10 [ 227.659296][ T8] ? __cancel_work+0x175/0x1f0 [ 227.659359][ T8] addrconf_ifdown+0xe01/0x1970 [ 227.659406][ T8] ? addrconf_cleanup+0x150/0x150 [ 227.659461][ T8] ? __kasan_check_write+0x18/0x20 [ 227.659512][ T8] ? mutex_unlock+0x90/0x240 [ 227.659574][ T8] ? __cfi_mutex_unlock+0x10/0x10 [ 227.659634][ T8] ? __cfi_device_cmp+0x10/0x10 [ 227.659695][ T8] ? masq_device_event+0xe0/0xe0 [ 227.659755][ T8] addrconf_notify+0x17a/0xeb0 [ 227.659810][ T8] ? ip6mr_device_event+0x1ed/0x230 [ 227.659846][ T8] ? __cfi_addrconf_notify+0x10/0x10 [ 227.659907][ T8] notifier_call_chain+0x106/0x2b0 [ 227.659949][ T8] raw_notifier_call_chain+0x31/0x40 [ 227.659995][ T8] dev_close_many+0x332/0x4f0 [ 227.660047][ T8] ? __cfi_dev_close_many+0x10/0x10 [ 227.660093][ T8] ? __kasan_check_read+0x15/0x20 [ 227.660154][ T8] unregister_netdevice_many_notify+0x4bd/0x1be0 [ 227.660233][ T8] ? __cfi_unregister_netdevice_many_notify+0x10/0x10 [ 227.660297][ T8] ? __kasan_check_read+0x15/0x20 [ 227.660348][ T8] ? __kasan_check_read+0x15/0x20 [ 227.660395][ T8] ? unregister_netdevice_queue+0x18a/0x350 [ 227.660460][ T8] default_device_exit_batch+0x845/0x8d0 [ 227.660531][ T8] ? mutex_lock+0x97/0x1d0 [ 227.660611][ T8] ? __cfi_mutex_lock+0x10/0x10 [ 227.660690][ T8] ? __cfi_default_device_exit_batch+0x10/0x10 [ 227.660764][ T8] ? rtnl_unlock+0x12/0x20 [ 227.660829][ T8] ? __cfi_default_device_exit_batch+0x10/0x10 [ 227.660902][ T8] cleanup_net+0x744/0xc90 [ 227.660951][ T8] ? __cfi_cleanup_net+0x10/0x10 [ 227.661006][ T8] ? __set_cpus_allowed_ptr+0x1d6/0x2c0 [ 227.661058][ T8] ? __cfi___set_cpus_allowed_ptr+0x10/0x10 [ 227.661105][ T8] ? kick_pool+0xad/0x540 [ 227.661159][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 227.661212][ T8] process_scheduled_works+0x7f7/0x1060 [ 227.661271][ T8] rescuer_thread+0xce5/0x1620 [ 227.661332][ T8] ? _raw_spin_lock_irqsave+0xc1/0x160 [ 227.661402][ T8] kthread+0x2c7/0x360 [ 227.661466][ T8] ? __cfi_rescuer_thread+0x10/0x10 [ 227.661541][ T8] ? __cfi_kthread+0x10/0x10 [ 227.661597][ T8] ret_from_fork+0x67/0xa0 [ 227.661717][ T8] ? __cfi_kthread+0x10/0x10 [ 227.661781][ T8] ret_from_fork_asm+0x1a/0x30 [ 227.661844][ T8] [ 227.662136][ T8] FAULT_INJECTION: forcing a failure. [ 227.662136][ T8] name failslab, interval 1, probability 100, space 0, times -1 [ 227.666062][ T286] FAULT_INJECTION: forcing a failure. [ 227.666062][ T286] name failslab, interval 1, probability 100, space 0, times -1 [ 227.666088][ T286] CPU: 1 UID: 0 PID: 286 Comm: syz-executor Not tainted syzkaller #0 45964a5c932d45c81e53484b258bbb49855afb35 [ 227.666167][ T286] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 227.666224][ T286] Call Trace: [ 227.666253][ T286] [ 227.666280][ T286] __dump_stack+0x21/0x30 [ 227.666362][ T286] dump_stack_lvl+0x140/0x1c0 [ 227.666430][ T286] ? __cfi_dump_stack_lvl+0x10/0x10 [ 227.666503][ T286] ? dequeue_entity+0x88a/0x13b0 [ 227.666578][ T286] dump_stack+0x19/0x20 [ 227.666651][ T286] should_fail_ex+0x3c2/0x510 [ 227.666709][ T286] should_failslab+0xac/0x100 [ 227.666768][ T286] kmem_cache_alloc_node_noprof+0x45/0x420 [ 227.666830][ T286] ? dequeue_entities+0x1d2/0x1370 [ 227.666900][ T286] ? __alloc_skb+0x10c/0x360 [ 227.666981][ T286] __alloc_skb+0x10c/0x360 [ 227.667042][ T286] ? tcp_current_mss+0x539/0x8b0 [ 227.667101][ T286] tcp_stream_alloc_skb+0x43/0x370 [ 227.667158][ T286] tcp_sendmsg_locked+0xcbc/0x4ac0 [ 227.667209][ T286] ? avc_has_perm_noaudit+0x289/0x360 [ 227.667276][ T286] ? __kasan_check_write+0x18/0x20 [ 227.667333][ T286] ? __cfi__raw_spin_lock_bh+0x10/0x10 [ 227.667393][ T286] ? __kasan_check_write+0x18/0x20 [ 227.667445][ T286] ? __cfi_tcp_sendmsg_locked+0x10/0x10 [ 227.667500][ T286] ? avc_has_perm+0x155/0x240 [ 227.667579][ T286] ? hrtimer_reprogram+0x336/0x3d0 [ 227.667674][ T286] ? __cfi_tcp_sendmsg+0x10/0x10 [ 227.667728][ T286] tcp_sendmsg+0x3e/0xd0 [ 227.667780][ T286] ? __cfi_tcp_sendmsg+0x10/0x10 [ 227.667828][ T286] inet_sendmsg+0xb7/0x120 [ 227.667887][ T286] ? __cfi_inet_sendmsg+0x10/0x10 [ 227.667953][ T286] sock_write_iter+0x3bf/0x490 [ 227.668018][ T286] ? __cfi_sock_write_iter+0x10/0x10 [ 227.668082][ T286] ? usleep_range_state+0x150/0x150 [ 227.668161][ T286] vfs_write+0x762/0xfd0 [ 227.668229][ T286] ? __cfi_vfs_write+0x10/0x10 [ 227.668286][ T286] ? _copy_from_user+0x87/0xa0 [ 227.668370][ T286] ? __kasan_check_read+0x15/0x20 [ 227.668433][ T286] ksys_write+0x145/0x260 [ 227.668488][ T286] ? xfd_validate_state+0x68/0x140 [ 227.668568][ T286] ? __cfi_ksys_write+0x10/0x10 [ 227.668630][ T286] ? __kasan_check_write+0x18/0x20 [ 227.668685][ T286] ? fpregs_restore_userregs+0x11c/0x260 [ 227.668765][ T286] __x64_sys_write+0x7f/0x90 [ 227.668826][ T286] x64_sys_call+0x271c/0x2ee0 [ 227.668879][ T286] do_syscall_64+0x57/0xf0 [ 227.668957][ T286] ? clear_bhb_loop+0x50/0xa0 [ 227.669057][ T286] entry_SYSCALL_64_after_hwframe+0x76/0x7e [ 227.669136][ T286] RIP: 0033:0x7f8f10159017 [ 227.669185][ T286] Code: 48 89 fa 4c 89 df e8 a8 56 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff [ 227.669251][ T286] RSP: 002b:00007ffd93487580 EFLAGS: 00000202 ORIG_RAX: 0000000000000001 [ 227.669330][ T286] RAX: ffffffffffffffda RBX: 000055555ad48500 RCX: 00007f8f10159017 [ 227.669367][ T286] RDX: 0000000000000140 RSI: 00007f8f0d1ffec0 RDI: 0000000000000003 [ 227.669401][ T286] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 227.669429][ T286] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000140 [ 227.669468][ T286] R13: 000055555ad600a0 R14: 00007ffd93487b20 R15: 00007f8f0d1ffec0 [ 227.669511][ T286] [ 227.669581][ T37] ? kthread_data+0x54/0xc0 [ 227.674254][ T8] CPU: 0 UID: 0 PID: 8 Comm: kworker/R-netns Not tainted syzkaller #0 45964a5c932d45c81e53484b258bbb49855afb35 [ 227.674283][ T8] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 227.674305][ T8] Workqueue: netns cleanup_net [ 227.674390][ T8] Call Trace: [ 227.674415][ T8] [ 227.674429][ T8] __dump_stack+0x21/0x30 [ 227.674517][ T8] dump_stack_lvl+0x140/0x1c0 [ 227.674585][ T8] ? __cfi_dump_stack_lvl+0x10/0x10 [ 227.674663][ T8] ? _raw_spin_lock_bh+0x96/0x130 [ 227.674737][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 227.674805][ T8] ? pneigh_queue_purge+0x570/0x5d0 [ 227.674873][ T8] ? timer_delete+0x101/0x3e0 [ 227.674934][ T8] dump_stack+0x19/0x20 [ 227.675002][ T8] should_fail_ex+0x3c2/0x510 [ 227.675069][ T8] should_failslab+0xac/0x100 [ 227.675130][ T8] kmem_cache_alloc_node_noprof+0x45/0x420 [ 227.675186][ T8] ? __alloc_skb+0x10c/0x360 [ 227.675260][ T8] __alloc_skb+0x10c/0x360 [ 227.675328][ T8] rtmsg_ifinfo_build_skb+0x7a/0x270 [ 227.675386][ T8] rtmsg_ifinfo+0x91/0x1a0 [ 227.675453][ T8] dev_close_many+0x27b/0x4f0 [ 227.675511][ T8] ? __cfi_dev_close_many+0x10/0x10 [ 227.675562][ T8] ? __kasan_check_read+0x15/0x20 [ 227.675617][ T8] unregister_netdevice_many_notify+0x4bd/0x1be0 [ 227.675692][ T8] ? __cfi_unregister_netdevice_many_notify+0x10/0x10 [ 227.675774][ T8] ? __kasan_check_read+0x15/0x20 [ 227.675857][ T8] ? __kasan_check_read+0x15/0x20 [ 227.675943][ T8] ? unregister_netdevice_queue+0x18a/0x350 [ 227.676021][ T8] default_device_exit_batch+0x845/0x8d0 [ 227.676098][ T8] ? mutex_lock+0x97/0x1d0 [ 227.676163][ T8] ? __cfi_mutex_lock+0x10/0x10 [ 227.676230][ T8] ? __cfi_default_device_exit_batch+0x10/0x10 [ 227.676310][ T8] ? rtnl_unlock+0x12/0x20 [ 227.676386][ T8] ? __cfi_default_device_exit_batch+0x10/0x10 [ 227.676474][ T8] cleanup_net+0x744/0xc90 [ 227.676540][ T8] ? __cfi_cleanup_net+0x10/0x10 [ 227.676610][ T8] ? __set_cpus_allowed_ptr+0x1d6/0x2c0 [ 227.676683][ T8] ? __cfi___set_cpus_allowed_ptr+0x10/0x10 [ 227.676750][ T8] ? kick_pool+0xad/0x540 [ 227.676801][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 227.676863][ T8] process_scheduled_works+0x7f7/0x1060 [ 227.676919][ T8] rescuer_thread+0xce5/0x1620 [ 227.676977][ T8] ? _raw_spin_lock_irqsave+0xc1/0x160 [ 227.677041][ T8] kthread+0x2c7/0x360 [ 227.677098][ T8] ? __cfi_rescuer_thread+0x10/0x10 [ 227.677168][ T8] ? __cfi_kthread+0x10/0x10 [ 227.677240][ T8] ret_from_fork+0x67/0xa0 [ 227.677311][ T8] ? __cfi_kthread+0x10/0x10 [ 227.677366][ T8] ret_from_fork_asm+0x1a/0x30 [ 227.677408][ T8] [ 227.677829][ T8] FAULT_INJECTION: forcing a failure. [ 227.677829][ T8] name failslab, interval 1, probability 100, space 0, times -1 [ 227.688981][ T12] CPU: 1 UID: 0 PID: 12 Comm: kworker/u8:0 Not tainted syzkaller #0 45964a5c932d45c81e53484b258bbb49855afb35 [ 227.689027][ T12] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 227.689080][ T12] Workqueue: wg-kex-wg0 wg_packet_handshake_send_worker [ 227.689169][ T12] Call Trace: [ 227.689193][ T12] [ 227.689206][ T12] __dump_stack+0x21/0x30 [ 227.689279][ T12] dump_stack_lvl+0x140/0x1c0 [ 227.689356][ T12] ? __cfi_dump_stack_lvl+0x10/0x10 [ 227.689427][ T12] ? calc_wheel_index+0x13a/0x8f0 [ 227.689507][ T12] ? __kasan_check_write+0x18/0x20 [ 227.689556][ T12] ? timer_update_keys+0xd0/0xd0 [ 227.689623][ T12] dump_stack+0x19/0x20 [ 227.689692][ T12] should_fail_ex+0x3c2/0x510 [ 227.689750][ T12] should_failslab+0xac/0x100 [ 227.689810][ T12] kmem_cache_alloc_node_noprof+0x45/0x420 [ 227.689867][ T12] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 227.689943][ T12] ? __alloc_skb+0x10c/0x360 [ 227.690010][ T12] ? __mod_timer+0x881/0xd20 [ 227.690073][ T12] __alloc_skb+0x10c/0x360 [ 227.690141][ T12] wg_socket_send_buffer_to_peer+0x3b/0x170 [ 227.690211][ T12] ? ktime_get_coarse_with_offset+0x157/0x1a0 [ 227.690272][ T12] wg_packet_handshake_send_worker+0x204/0x2a0 [ 227.690342][ T12] ? __cfi_wg_packet_handshake_send_worker+0x10/0x10 [ 227.690444][ T12] ? _raw_spin_lock_irq+0x93/0x120 [ 227.690519][ T12] ? kick_pool+0xad/0x540 [ 227.690603][ T12] process_scheduled_works+0x7f7/0x1060 [ 227.690669][ T12] worker_thread+0xc99/0x13f0 [ 227.690735][ T12] kthread+0x2c7/0x360 [ 227.690793][ T12] ? __cfi_worker_thread+0x10/0x10 [ 227.690843][ T12] ? __cfi_kthread+0x10/0x10 [ 227.690908][ T12] ret_from_fork+0x67/0xa0 [ 227.690986][ T12] ? __cfi_kthread+0x10/0x10 [ 227.691051][ T12] ret_from_fork_asm+0x1a/0x30 [ 227.691101][ T12] [ 227.691194][ T286] FAULT_INJECTION: forcing a failure. [ 227.691194][ T286] name failslab, interval 1, probability 100, space 0, times -1 [ 227.697857][ T8] CPU: 0 UID: 0 PID: 8 Comm: kworker/R-netns Not tainted syzkaller #0 45964a5c932d45c81e53484b258bbb49855afb35 [ 227.697892][ T8] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 227.697946][ T8] Workqueue: netns cleanup_net [ 227.698007][ T8] Call Trace: [ 227.698032][ T8] [ 227.698055][ T8] __dump_stack+0x21/0x30 [ 227.698120][ T8] dump_stack_lvl+0x140/0x1c0 [ 227.698199][ T8] ? __cfi_dump_stack_lvl+0x10/0x10 [ 227.698266][ T8] ? _raw_spin_lock_bh+0x96/0x130 [ 227.698315][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 227.698383][ T8] ? pneigh_queue_purge+0x570/0x5d0 [ 227.698449][ T8] ? timer_delete+0x101/0x3e0 [ 227.698509][ T8] dump_stack+0x19/0x20 [ 227.698567][ T8] should_fail_ex+0x3c2/0x510 [ 227.698629][ T8] should_failslab+0xac/0x100 [ 227.698686][ T8] kmem_cache_alloc_node_noprof+0x45/0x420 [ 227.698750][ T8] ? __alloc_skb+0x10c/0x360 [ 227.698821][ T8] __alloc_skb+0x10c/0x360 [ 227.698887][ T8] rtmsg_ifinfo_build_skb+0x7a/0x270 [ 227.698947][ T8] rtmsg_ifinfo+0x91/0x1a0 [ 227.699002][ T8] dev_close_many+0x27b/0x4f0 [ 227.699050][ T8] ? __cfi_dev_close_many+0x10/0x10 [ 227.699104][ T8] ? __kasan_check_read+0x15/0x20 [ 227.699153][ T8] unregister_netdevice_many_notify+0x4bd/0x1be0 [ 227.699225][ T8] ? __cfi_unregister_netdevice_many_notify+0x10/0x10 [ 227.699292][ T8] ? __kasan_check_read+0x15/0x20 [ 227.699354][ T8] ? __kasan_check_read+0x15/0x20 [ 227.699419][ T8] ? unregister_netdevice_queue+0x18a/0x350 [ 227.699502][ T8] default_device_exit_batch+0x845/0x8d0 [ 227.699580][ T8] ? mutex_lock+0x97/0x1d0 [ 227.699643][ T8] ? __cfi_mutex_lock+0x10/0x10 [ 227.699700][ T8] ? __cfi_default_device_exit_batch+0x10/0x10 [ 227.699762][ T8] ? rtnl_unlock+0x12/0x20 [ 227.699838][ T8] ? __cfi_default_device_exit_batch+0x10/0x10 [ 227.699923][ T8] cleanup_net+0x744/0xc90 [ 227.699973][ T8] ? __cfi_cleanup_net+0x10/0x10 [ 227.700041][ T8] ? __set_cpus_allowed_ptr+0x1d6/0x2c0 [ 227.700103][ T8] ? __cfi___set_cpus_allowed_ptr+0x10/0x10 [ 227.700150][ T8] ? kick_pool+0xad/0x540 [ 227.700203][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 227.700268][ T8] process_scheduled_works+0x7f7/0x1060 [ 227.700328][ T8] rescuer_thread+0xce5/0x1620 [ 227.700384][ T8] ? _raw_spin_lock_irqsave+0xc1/0x160 [ 227.700457][ T8] kthread+0x2c7/0x360 [ 227.700511][ T8] ? __cfi_rescuer_thread+0x10/0x10 [ 227.700567][ T8] ? __cfi_kthread+0x10/0x10 [ 227.700622][ T8] ret_from_fork+0x67/0xa0 [ 227.700687][ T8] ? __cfi_kthread+0x10/0x10 [ 227.700769][ T8] ret_from_fork_asm+0x1a/0x30 [ 227.700836][ T8] [ 227.701017][ T8] FAULT_INJECTION: forcing a failure. [ 227.701017][ T8] name failslab, interval 1, probability 100, space 0, times -1 [ 227.705529][ T13] CPU: 1 UID: 0 PID: 13 Comm: kworker/u8:1 Not tainted syzkaller #0 45964a5c932d45c81e53484b258bbb49855afb35 [ 227.705571][ T13] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 227.705628][ T13] Workqueue: wg-kex-wg2 wg_packet_handshake_send_worker [ 227.705709][ T13] Call Trace: [ 227.705727][ T13] [ 227.705746][ T13] __dump_stack+0x21/0x30 [ 227.705817][ T13] dump_stack_lvl+0x140/0x1c0 [ 227.705884][ T13] ? __cfi_dump_stack_lvl+0x10/0x10 [ 227.705957][ T13] ? calc_wheel_index+0x1b9/0x8f0 [ 227.706020][ T13] ? __kasan_check_write+0x18/0x20 [ 227.706073][ T13] ? timer_update_keys+0xd0/0xd0 [ 227.706139][ T13] dump_stack+0x19/0x20 [ 227.706200][ T13] should_fail_ex+0x3c2/0x510 [ 227.706255][ T13] should_failslab+0xac/0x100 [ 227.706307][ T13] kmem_cache_alloc_node_noprof+0x45/0x420 [ 227.706360][ T13] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 227.706416][ T13] ? __alloc_skb+0x10c/0x360 [ 227.706462][ T13] ? __mod_timer+0x881/0xd20 [ 227.706507][ T13] __alloc_skb+0x10c/0x360 [ 227.706584][ T13] wg_socket_send_buffer_to_peer+0x3b/0x170 [ 227.706648][ T13] ? ktime_get_coarse_with_offset+0x157/0x1a0 [ 227.706701][ T13] wg_packet_handshake_send_worker+0x204/0x2a0 [ 227.706764][ T13] ? __cfi_wg_packet_handshake_send_worker+0x10/0x10 [ 227.706829][ T13] ? _raw_spin_lock_irq+0x93/0x120 [ 227.706884][ T13] ? kick_pool+0xad/0x540 [ 227.706955][ T13] process_scheduled_works+0x7f7/0x1060 [ 227.707029][ T13] worker_thread+0xc99/0x13f0 [ 227.707110][ T13] kthread+0x2c7/0x360 [ 227.707165][ T13] ? __cfi_worker_thread+0x10/0x10 [ 227.707216][ T13] ? __cfi_kthread+0x10/0x10 [ 227.707273][ T13] ret_from_fork+0x67/0xa0 [ 227.707337][ T13] ? __cfi_kthread+0x10/0x10 [ 227.707390][ T13] ret_from_fork_asm+0x1a/0x30 [ 227.707438][ T13] [ 227.707524][ T45] FAULT_INJECTION: forcing a failure. [ 227.707524][ T45] name failslab, interval 1, probability 100, space 0, times -1 [ 227.713264][ T8] CPU: 0 UID: 0 PID: 8 Comm: kworker/R-netns Not tainted syzkaller #0 45964a5c932d45c81e53484b258bbb49855afb35 [ 227.713313][ T8] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 227.713370][ T8] Workqueue: netns cleanup_net [ 227.713443][ T8] Call Trace: [ 227.713455][ T8] [ 227.713474][ T8] __dump_stack+0x21/0x30 [ 227.713566][ T8] dump_stack_lvl+0x140/0x1c0 [ 227.713635][ T8] ? __cfi_dump_stack_lvl+0x10/0x10 [ 227.713709][ T8] dump_stack+0x19/0x20 [ 227.713765][ T8] should_fail_ex+0x3c2/0x510 [ 227.713817][ T8] should_failslab+0xac/0x100 [ 227.713880][ T8] kmem_cache_alloc_node_noprof+0x45/0x420 [ 227.713928][ T8] ? __alloc_skb+0x10c/0x360 [ 227.713993][ T8] __alloc_skb+0x10c/0x360 [ 227.714058][ T8] __neigh_notify+0x83/0x140 [ 227.714133][ T8] neigh_cleanup_and_release+0x2c/0x1a0 [ 227.714197][ T8] neigh_flush_dev+0x79c/0x950 [ 227.714259][ T8] ? _raw_write_lock_bh+0x96/0xf0 [ 227.714326][ T8] __neigh_ifdown+0x45/0x470 [ 227.714383][ T8] ? inetdev_event+0x224/0x1240 [ 227.714444][ T8] neigh_ifdown+0x23/0x30 [ 227.714500][ T8] arp_ifdown+0x20/0x30 [ 227.714558][ T8] fib_netdev_event+0x58a/0x5d0 [ 227.714612][ T8] ? __cfi_fib_netdev_event+0x10/0x10 [ 227.714673][ T8] notifier_call_chain+0x106/0x2b0 [ 227.714717][ T8] raw_notifier_call_chain+0x31/0x40 [ 227.714772][ T8] dev_close_many+0x332/0x4f0 [ 227.714845][ T8] ? __cfi_dev_close_many+0x10/0x10 [ 227.714912][ T8] ? __kasan_check_read+0x15/0x20 [ 227.714957][ T8] unregister_netdevice_many_notify+0x4bd/0x1be0 [ 227.715032][ T8] ? __cfi_unregister_netdevice_many_notify+0x10/0x10 [ 227.715104][ T8] ? __kasan_check_read+0x15/0x20 [ 227.715150][ T8] ? __kasan_check_read+0x15/0x20 [ 227.715197][ T8] ? unregister_netdevice_queue+0x18a/0x350 [ 227.715269][ T8] default_device_exit_batch+0x845/0x8d0 [ 227.715343][ T8] ? mutex_lock+0x97/0x1d0 [ 227.715407][ T8] ? __cfi_mutex_lock+0x10/0x10 [ 227.715471][ T8] ? __cfi_default_device_exit_batch+0x10/0x10 [ 227.715543][ T8] ? rtnl_unlock+0x12/0x20 [ 227.715614][ T8] ? __cfi_default_device_exit_batch+0x10/0x10 [ 227.715687][ T8] cleanup_net+0x744/0xc90 [ 227.715744][ T8] ? __cfi_cleanup_net+0x10/0x10 [ 227.715787][ T8] ? __set_cpus_allowed_ptr+0x1d6/0x2c0 [ 227.715857][ T8] ? __cfi___set_cpus_allowed_ptr+0x10/0x10 [ 227.715912][ T8] ? kick_pool+0xad/0x540 [ 227.715963][ T8] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 227.716022][ T8] process_scheduled_works+0x7f7/0x1060 [ 227.716080][ T8] rescuer_thread+0xce5/0x1620 [ 227.716141][ T8] ? _raw_spin_lock_irqsave+0xc1/0x160 [ 227.716234][ T8] kthread+0x2c7/0x360 [ 227.716286][ T8] ? __cfi_rescuer_thread+0x10/0x10 [ 227.716342][ T8] ? __cfi_kthread+0x10/0x10 [ 227.716396][ T8] ret_from_fork+0x67/0xa0 [ 227.716474][ T8] ? __cfi_kthread+0x10/0x10 [ 227.716542][ T8] ret_from_fork_asm+0x1a/0x30 [ 227.716603][ T8] [ 227.716726][ T8] FAULT_INJECTION: forcing a failure. [ 227.716726][ T8] name failslab, interval 1, probability 100, space 0, times -1 [ 227.721271][ T45] CPU: 1 UID: 0 PID: 45 Comm: kworker/1:1 Not tainted syzkaller #0 45964a5c932d45c81e53484b258bbb49855afb35 [ 227.721299][ T45] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 227.721312][ T45] Workqueue: events_power_efficient neigh_periodic_work [ 227.721402][ T45] Call Trace: [ 227.721426][ T45] [ 227.721439][ T45] __dump_stack+0x21/0x30 [ 227.721501][ T45] dump_stack_lvl+0x140/0x1c0 [ 227.721581][ T45] ? __cfi_dump_stack_lvl+0x10/0x10 [ 227.721673][ T45] ? __sched_text_start+0x10/0x10 [ 227.721742][ T45] ? _raw_spin_lock+0x92/0x120 [ 227.721805][ T45] dump_stack+0x19/0x20 [ 227.721888][ T45] should_fail_ex+0x3c2/0x510 [ 227.721962][ T45] should_failslab+0xac/0x100 [ 227.722035][ T45] kmem_cache_alloc_node_noprof+0x45/0x420 [ 227.722099][ T45] ? __alloc_skb+0x10c/0x360 [ 227.722180][ T45] __alloc_skb+0x10c/0x360 [ 227.722257][ T45] __neigh_notify+0x83/0x140 [ 227.722343][ T45] neigh_cleanup_and_release+0x2c/0x1a0 [ 227.722419][ T45] neigh_periodic_work+0x9b7/0xbb0 [ 227.722497][ T45] process_scheduled_works+0x7f7/0x1060 [ 227.722571][ T45] worker_thread+0xc99/0x13f0 [ 227.722647][ T45] kthread+0x2c7/0x360 [ 227.722713][ T45] ? __cfi_worker_thread+0x10/0x10 [ 227.722787][ T45] ? __cfi_kthread+0x10/0x10 [ 227.722902][ T45] ret_from_fork+0x67/0xa0 [ 227.722996][ T45] ? __cfi_kthread+0x10/0x10 [ 227.723050][ T45] ret_from_fork_asm+0x1a/0x30 [ 227.723105][ T45] [ 227.723176][ T286] CPU: 1 UID: 0 PID: 286 Comm: syz-executor Not tainted syzkaller #0 45964a5c932d45c81e53484b258bbb49855afb35 [ 227.723233][ T286] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 227.723262][ T286] Call Trace: [ 227.723281][ T286] [ 227.723300][ T286] __dump_stack+0x21/0x30