Warning: Permanently added '10.128.0.27' (ED25519) to the list of known hosts. 2026/06/28 18:56:50 parsed 1 programs 2026/06/28 18:56:50 serving rpc on tcp://40735 [ 24.597416][ T28] audit: type=1400 audit(1782673010.769:64): avc: denied { node_bind } for pid=295 comm="syz-execprog" saddr=::1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:node_t tclass=tcp_socket permissive=1 [ 24.618120][ T28] audit: type=1400 audit(1782673010.769:65): avc: denied { module_request } for pid=295 comm="syz-execprog" kmod="net-pf-2-proto-262-type-1" scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:kernel_t tclass=system permissive=1 [ 25.323376][ T28] audit: type=1400 audit(1782673011.489:66): avc: denied { mounton } for pid=301 comm="syz-executor" path="/syzcgroup/unified" dev="sda1" ino=2024 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:root_t tclass=dir permissive=1 [ 25.324403][ T301] cgroup: Unknown subsys name 'net' [ 25.346467][ T28] audit: type=1400 audit(1782673011.489:67): avc: denied { mount } for pid=301 comm="syz-executor" name="/" dev="cgroup2" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1 [ 25.373708][ T28] audit: type=1400 audit(1782673011.519:68): avc: denied { unmount } for pid=301 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1 [ 25.373822][ T301] cgroup: Unknown subsys name 'devices' [ 25.518533][ T301] cgroup: Unknown subsys name 'hugetlb' [ 25.524117][ T301] cgroup: Unknown subsys name 'rlimit' [ 25.630741][ T28] audit: type=1400 audit(1782673011.799:69): avc: denied { setattr } for pid=301 comm="syz-executor" name="raw-gadget" dev="devtmpfs" ino=258 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:device_t tclass=chr_file permissive=1 [ 25.653947][ T28] audit: type=1400 audit(1782673011.799:70): avc: denied { create } for pid=301 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 25.662581][ T305] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). [ 25.674338][ T28] audit: type=1400 audit(1782673011.799:71): avc: denied { write } for pid=301 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 25.703078][ T28] audit: type=1400 audit(1782673011.799:72): avc: denied { read } for pid=301 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 Setting up swapspace version 1, size = 127995904 bytes [ 25.723217][ T28] audit: type=1400 audit(1782673011.799:73): avc: denied { mounton } for pid=301 comm="syz-executor" path="/proc/sys/fs/binfmt_misc" dev="binfmt_misc" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:binfmt_misc_fs_t tclass=dir permissive=1 [ 25.758225][ T301] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 26.369128][ T307] request_module fs-gadgetfs succeeded, but still no fs? [ 26.952550][ T350] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.959602][ T350] bridge0: port 1(bridge_slave_0) entered disabled state [ 26.967033][ T350] device bridge_slave_0 entered promiscuous mode [ 26.973801][ T350] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.980850][ T350] bridge0: port 2(bridge_slave_1) entered disabled state [ 26.988142][ T350] device bridge_slave_1 entered promiscuous mode [ 27.022653][ T350] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.029700][ T350] bridge0: port 2(bridge_slave_1) entered forwarding state [ 27.036978][ T350] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.043989][ T350] bridge0: port 1(bridge_slave_0) entered forwarding state [ 27.062578][ T329] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 27.070073][ T329] bridge0: port 1(bridge_slave_0) entered disabled state [ 27.077295][ T329] bridge0: port 2(bridge_slave_1) entered disabled state [ 27.085790][ T329] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 27.094056][ T329] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.101086][ T329] bridge0: port 1(bridge_slave_0) entered forwarding state [ 27.110300][ T329] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 27.118467][ T329] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.125465][ T329] bridge0: port 2(bridge_slave_1) entered forwarding state [ 27.136590][ T329] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 27.145551][ T329] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 27.158366][ T329] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 27.168728][ T329] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 27.176850][ T329] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 27.184151][ T329] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 27.192164][ T350] device veth0_vlan entered promiscuous mode [ 27.201495][ T329] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 27.210482][ T350] device veth1_macvtap entered promiscuous mode [ 27.219273][ T329] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 27.229071][ T329] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 27.255654][ T350] syz-executor (350) used greatest stack depth: 21688 bytes left 2026/06/28 18:56:53 executed programs: 0 [ 27.527537][ T369] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.534566][ T369] bridge0: port 1(bridge_slave_0) entered disabled state [ 27.542616][ T369] device bridge_slave_0 entered promiscuous mode [ 27.555943][ T369] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.563005][ T369] bridge0: port 2(bridge_slave_1) entered disabled state [ 27.570322][ T369] device bridge_slave_1 entered promiscuous mode [ 27.604505][ T369] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.611545][ T369] bridge0: port 2(bridge_slave_1) entered forwarding state [ 27.618787][ T369] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.625792][ T369] bridge0: port 1(bridge_slave_0) entered forwarding state [ 27.647238][ T329] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 27.655088][ T329] bridge0: port 1(bridge_slave_0) entered disabled state [ 27.662319][ T329] bridge0: port 2(bridge_slave_1) entered disabled state [ 27.675215][ T329] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 27.683584][ T329] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.690598][ T329] bridge0: port 1(bridge_slave_0) entered forwarding state [ 27.699873][ T329] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 27.708057][ T329] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.715062][ T329] bridge0: port 2(bridge_slave_1) entered forwarding state [ 27.727119][ T329] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 27.740338][ T329] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 27.748683][ T329] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 27.761255][ T329] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 27.769705][ T329] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 27.786930][ T329] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 27.795262][ T329] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 27.803255][ T329] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 27.810736][ T329] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 27.824980][ T369] device veth0_vlan entered promiscuous mode [ 27.833911][ T329] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 27.842105][ T329] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 27.850958][ T369] device veth1_macvtap entered promiscuous mode [ 27.859844][ T329] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 27.867854][ T329] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 27.876023][ T329] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 27.890132][ T329] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 27.898324][ T329] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 27.923409][ T374] ================================================================== [ 27.931491][ T374] BUG: KASAN: use-after-free in rcu_segcblist_enqueue+0x9c/0xb0 [ 27.939121][ T374] Write of size 8 at addr ffff888112271990 by task syz.2.17/374 [ 27.946729][ T374] [ 27.949038][ T374] CPU: 0 PID: 374 Comm: syz.2.17 Not tainted syzkaller #0 [ 27.956123][ T374] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 27.966165][ T374] Call Trace: [ 27.969430][ T374] [ 27.972355][ T374] __dump_stack+0x21/0x24 [ 27.976672][ T374] dump_stack_lvl+0x110/0x170 [ 27.981334][ T374] ? __cfi_dump_stack_lvl+0x8/0x8 [ 27.986345][ T374] ? rcu_segcblist_enqueue+0x9c/0xb0 [ 27.991615][ T374] print_address_description+0x71/0x200 [ 27.997143][ T374] print_report+0x4a/0x60 [ 28.001455][ T374] kasan_report+0x122/0x150 [ 28.005943][ T374] ? rcu_segcblist_enqueue+0x9c/0xb0 [ 28.011211][ T374] __asan_report_store8_noabort+0x17/0x20 [ 28.016910][ T374] rcu_segcblist_enqueue+0x9c/0xb0 [ 28.022006][ T374] call_rcu+0x554/0xf50 [ 28.026146][ T374] ? __cfi_call_rcu+0x10/0x10 [ 28.030810][ T374] ? __kasan_check_write+0x14/0x20 [ 28.035901][ T374] ? selinux_inode_free_security+0x21f/0x230 [ 28.041866][ T374] security_inode_free+0xc5/0xe0 [ 28.046787][ T374] __destroy_inode+0x175/0x500 [ 28.051536][ T374] evict+0x777/0x8c0 [ 28.055422][ T374] ? proc_nr_inodes+0x2f0/0x2f0 [ 28.060254][ T374] ? _raw_spin_lock+0x94/0xf0 [ 28.064913][ T374] ? __cfi__raw_spin_lock+0x10/0x10 [ 28.070091][ T374] ? __kasan_check_write+0x14/0x20 [ 28.075180][ T374] iput+0x633/0x690 [ 28.078971][ T374] dentry_unlink_inode+0x346/0x3f0 [ 28.084061][ T374] __dentry_kill+0x46c/0x680 [ 28.088634][ T374] dentry_kill+0xc0/0x2a0 [ 28.093392][ T374] dput+0x42/0x80 [ 28.097032][ T374] __fput+0x5c0/0x8f0 [ 28.101008][ T374] ____fput+0x15/0x20 [ 28.104974][ T374] task_work_run+0x1e1/0x250 [ 28.109548][ T374] ? __cfi_task_work_run+0x10/0x10 [ 28.114643][ T374] ? free_nsproxy+0x21f/0x270 [ 28.119313][ T374] do_exit+0xaf2/0x2850 [ 28.123470][ T374] ? _raw_spin_lock+0x94/0xf0 [ 28.128130][ T374] ? __cfi_do_exit+0x10/0x10 [ 28.132707][ T374] ? plist_del+0x3ec/0x400 [ 28.137110][ T374] ? _raw_spin_unlock+0x4c/0x70 [ 28.141947][ T374] ? __kasan_check_write+0x14/0x20 [ 28.147041][ T374] ? _raw_spin_lock_irq+0x95/0xf0 [ 28.152046][ T374] do_group_exit+0x21b/0x2e0 [ 28.156618][ T374] ? __kasan_check_write+0x14/0x20 [ 28.161708][ T374] ? recalc_sigpending+0x168/0x1c0 [ 28.166800][ T374] get_signal+0x1382/0x14f0 [ 28.171290][ T374] arch_do_signal_or_restart+0xd1/0x11c0 [ 28.176904][ T374] ? do_futex+0x2e2/0x430 [ 28.181215][ T374] ? __cfi_do_futex+0x10/0x10 [ 28.185955][ T374] ? __cfi_arch_do_signal_or_restart+0x10/0x10 [ 28.192087][ T374] ? __se_sys_futex+0x136/0x310 [ 28.196918][ T374] exit_to_user_mode_loop+0x7a/0xb0 [ 28.202097][ T374] exit_to_user_mode_prepare+0x87/0xd0 [ 28.207539][ T374] syscall_exit_to_user_mode+0x1a/0x30 [ 28.212977][ T374] do_syscall_64+0x58/0xa0 [ 28.217375][ T374] ? clear_bhb_loop+0x30/0x80 [ 28.222029][ T374] ? clear_bhb_loop+0x30/0x80 [ 28.226683][ T374] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 28.232558][ T374] RIP: 0033:0x7f5cb799ce59 [ 28.236967][ T374] Code: Unable to access opcode bytes at 0x7f5cb799ce2f. [ 28.243960][ T374] RSP: 002b:00007f5cb883a0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 28.252361][ T374] RAX: fffffffffffffe00 RBX: 00007f5cb7c15fa8 RCX: 00007f5cb799ce59 [ 28.260313][ T374] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f5cb7c15fa8 [ 28.268263][ T374] RBP: 00007f5cb7c15fa0 R08: 0000000000000000 R09: 0000000000000000 [ 28.276211][ T374] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 28.284159][ T374] R13: 00007f5cb7c16038 R14: 00007fffa42e6530 R15: 00007fffa42e6618 [ 28.292460][ T374] [ 28.295461][ T374] [ 28.297761][ T374] Allocated by task 374: [ 28.301988][ T374] kasan_set_track+0x4b/0x70 [ 28.306561][ T374] kasan_save_alloc_info+0x1f/0x30 [ 28.311649][ T374] __kasan_kmalloc+0x95/0xb0 [ 28.316221][ T374] __kmalloc+0xb4/0x1e0 [ 28.320357][ T374] l2tp_session_create+0x38/0xbd0 [ 28.325386][ T374] pppol2tp_connect+0xbf5/0x1640 [ 28.330307][ T374] __sys_connect+0x3da/0x460 [ 28.334877][ T374] __x64_sys_connect+0x7a/0x90 [ 28.339620][ T374] x64_sys_call+0x88d/0x9a0 [ 28.344104][ T374] do_syscall_64+0x4c/0xa0 [ 28.348502][ T374] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 28.354378][ T374] [ 28.356680][ T374] Freed by task 10: [ 28.360460][ T374] kasan_set_track+0x4b/0x70 [ 28.365028][ T374] kasan_save_free_info+0x2b/0x40 [ 28.370031][ T374] ____kasan_slab_free+0x132/0x180 [ 28.375123][ T374] __kasan_slab_free+0x11/0x20 [ 28.379868][ T374] slab_free_freelist_hook+0xc2/0x190 [ 28.385219][ T374] __kmem_cache_free+0xb7/0x1b0 [ 28.390051][ T374] kfree+0x6f/0xf0 [ 28.393752][ T374] l2tp_session_put+0xaf/0x1a0 [ 28.398492][ T374] l2tp_session_delete+0x3df/0x4d0 [ 28.403584][ T374] l2tp_tunnel_del_work+0x199/0x410 [ 28.408761][ T374] process_one_work+0x717/0xc30 [ 28.413599][ T374] worker_thread+0xa4d/0x11d0 [ 28.418253][ T374] kthread+0x281/0x320 [ 28.422304][ T374] ret_from_fork+0x1f/0x30 [ 28.426702][ T374] [ 28.429008][ T374] Last potentially related work creation: [ 28.434696][ T374] kasan_save_stack+0x3a/0x60 [ 28.439354][ T374] __kasan_record_aux_stack+0xb6/0xc0 [ 28.444704][ T374] kasan_record_aux_stack_noalloc+0xb/0x10 [ 28.450488][ T374] call_rcu+0xcf/0xf50 [ 28.454538][ T374] pppol2tp_release+0x1e3/0x2b0 [ 28.459369][ T374] sock_close+0xc9/0x220 [ 28.463597][ T374] __fput+0x1fd/0x8f0 [ 28.467558][ T374] ____fput+0x15/0x20 [ 28.471520][ T374] task_work_run+0x1e1/0x250 [ 28.476091][ T374] do_exit+0xaf2/0x2850 [ 28.480232][ T374] do_group_exit+0x21b/0x2e0 [ 28.484804][ T374] get_signal+0x1382/0x14f0 [ 28.489289][ T374] arch_do_signal_or_restart+0xd1/0x11c0 [ 28.494900][ T374] exit_to_user_mode_loop+0x7a/0xb0 [ 28.500081][ T374] exit_to_user_mode_prepare+0x87/0xd0 [ 28.505522][ T374] syscall_exit_to_user_mode+0x1a/0x30 [ 28.510959][ T374] do_syscall_64+0x58/0xa0 [ 28.515358][ T374] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 28.521234][ T374] [ 28.523538][ T374] The buggy address belongs to the object at ffff888112271800 [ 28.523538][ T374] which belongs to the cache kmalloc-512 of size 512 [ 28.537564][ T374] The buggy address is located 400 bytes inside of [ 28.537564][ T374] 512-byte region [ffff888112271800, ffff888112271a00) [ 28.550814][ T374] [ 28.553115][ T374] The buggy address belongs to the physical page: [ 28.559511][ T374] page:ffffea0004489c00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x112270 [ 28.569731][ T374] head:ffffea0004489c00 order:2 compound_mapcount:0 compound_pincount:0 [ 28.578029][ T374] flags: 0x4000000000010200(slab|head|zone=1) [ 28.584088][ T374] raw: 4000000000010200 ffffea0004510f00 dead000000000002 ffff888100042f00 [ 28.592648][ T374] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 [ 28.601202][ T374] page dumped because: kasan: bad access detected [ 28.607592][ T374] page_owner tracks the page as allocated [ 28.613280][ T374] page last allocated via order 2, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 117, tgid 117 (udevadm), ts 3916371241, free_ts 3907243343 [ 28.633831][ T374] post_alloc_hook+0x1f5/0x210 [ 28.638582][ T374] prep_new_page+0x1c/0x110 [ 28.643065][ T374] get_page_from_freelist+0x2ca9/0x2d20 [ 28.648600][ T374] __alloc_pages+0x1fa/0x610 [ 28.653178][ T374] alloc_slab_page+0x6e/0xf0 [ 28.657749][ T374] new_slab+0x98/0x3e0 [ 28.661798][ T374] ___slab_alloc+0x70f/0xb70 [ 28.666371][ T374] __slab_alloc+0x5e/0xa0 [ 28.670690][ T374] __kmem_cache_alloc_node+0x204/0x2d0 [ 28.676129][ T374] __kmalloc_node_track_caller+0xa1/0x1e0 [ 28.681832][ T374] __alloc_skb+0x226/0x4a0 [ 28.686227][ T374] alloc_uevent_skb+0x85/0x240 [ 28.690977][ T374] kobject_uevent_net_broadcast+0x343/0x5b0 [ 28.696853][ T374] kobject_uevent_env+0x541/0x720 [ 28.701862][ T374] kobject_synth_uevent+0x457/0x940 [ 28.707049][ T374] uevent_store+0x25/0x70 [ 28.711361][ T374] page last free stack trace: [ 28.716010][ T374] free_unref_page_prepare+0x80c/0x820 [ 28.721449][ T374] free_unref_page+0x93/0x530 [ 28.726107][ T374] __free_pages+0x67/0x100 [ 28.730504][ T374] free_pages+0x82/0x90 [ 28.734642][ T374] __stack_depot_save+0x45f/0x490 [ 28.739653][ T374] kasan_set_track+0x60/0x70 [ 28.744222][ T374] kasan_save_free_info+0x2b/0x40 [ 28.749223][ T374] ____kasan_slab_free+0x132/0x180 [ 28.754315][ T374] __kasan_slab_free+0x11/0x20 [ 28.759057][ T374] slab_free_freelist_hook+0xc2/0x190 [ 28.764406][ T374] __kmem_cache_free+0xb7/0x1b0 [ 28.769239][ T374] kfree+0x6f/0xf0 [ 28.772937][ T374] kobject_uevent_env+0x35c/0x720 [ 28.777948][ T374] kobject_synth_uevent+0x457/0x940 [ 28.783129][ T374] uevent_store+0x25/0x70 [ 28.787445][ T374] dev_attr_store+0x6c/0x90 [ 28.792381][ T374] [ 28.794696][ T374] Memory state around the buggy address: [ 28.800333][ T374] ffff888112271880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.808375][ T374] ffff888112271900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.816417][ T374] >ffff888112271980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.824467][ T374] ^ [ 28.829041][ T374] ffff888112271a00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 28.837106][ T374] ffff888112271a80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 28.845142][ T374] ================================================================== [ 28.853175][ T374] Disabling lock debugging due to kernel taint