Warning: Permanently added '10.128.0.67' (ED25519) to the list of known hosts. 2026/08/08 14:12:23 parsed 1 programs 2026/08/08 14:12:23 serving rpc on tcp://36025 [ 24.994343][ T28] audit: type=1400 audit(1786198343.044:64): avc: denied { node_bind } for pid=296 comm="syz-execprog" saddr=::1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:node_t tclass=tcp_socket permissive=1 [ 25.015417][ T28] audit: type=1400 audit(1786198343.044:65): avc: denied { module_request } for pid=296 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 [ 26.326407][ T28] audit: type=1400 audit(1786198344.384:66): avc: denied { mounton } for pid=303 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 [ 26.330166][ T303] cgroup: Unknown subsys name 'net' [ 26.349089][ T28] audit: type=1400 audit(1786198344.384:67): avc: denied { mount } for pid=303 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 [ 26.376443][ T28] audit: type=1400 audit(1786198344.414:68): avc: denied { unmount } for pid=303 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1 [ 26.377101][ T303] cgroup: Unknown subsys name 'devices' [ 26.518367][ T303] cgroup: Unknown subsys name 'hugetlb' [ 26.524048][ T303] cgroup: Unknown subsys name 'rlimit' [ 26.648983][ T28] audit: type=1400 audit(1786198344.704:69): avc: denied { setattr } for pid=303 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 [ 26.672274][ T28] audit: type=1400 audit(1786198344.704:70): avc: denied { create } for pid=303 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 26.692801][ T28] audit: type=1400 audit(1786198344.704:71): avc: denied { write } for pid=303 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 26.713237][ T28] audit: type=1400 audit(1786198344.704:72): avc: denied { read } for pid=303 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 [ 26.733681][ T28] audit: type=1400 audit(1786198344.704:73): avc: denied { mounton } for pid=303 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 [ 26.743222][ T306] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). [ 26.806227][ T303] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 27.648469][ T308] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.655593][ T308] bridge0: port 1(bridge_slave_0) entered disabled state [ 27.663502][ T308] device bridge_slave_0 entered promiscuous mode [ 27.671131][ T308] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.678442][ T308] bridge0: port 2(bridge_slave_1) entered disabled state [ 27.686266][ T308] device bridge_slave_1 entered promiscuous mode [ 27.752820][ T308] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.759968][ T308] bridge0: port 2(bridge_slave_1) entered forwarding state [ 27.767342][ T308] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.774407][ T308] bridge0: port 1(bridge_slave_0) entered forwarding state [ 27.796549][ T8] bridge0: port 1(bridge_slave_0) entered disabled state [ 27.803996][ T8] bridge0: port 2(bridge_slave_1) entered disabled state [ 27.811887][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 27.819571][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 27.829105][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 27.837636][ T8] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.844711][ T8] bridge0: port 1(bridge_slave_0) entered forwarding state [ 27.853943][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 27.862393][ T8] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.869497][ T8] bridge0: port 2(bridge_slave_1) entered forwarding state [ 27.883248][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 27.892894][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 27.908661][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 27.921627][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 27.930523][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 27.938336][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 27.946807][ T308] device veth0_vlan entered promiscuous mode [ 27.957918][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 27.967435][ T308] device veth1_macvtap entered promiscuous mode [ 27.978426][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 27.989386][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 28.009045][ T308] request_module fs-gadgetfs succeeded, but still no fs? [ 28.040165][ T308] syz-executor (308) used greatest stack depth: 21536 bytes left [ 28.506947][ T43] device bridge_slave_1 left promiscuous mode [ 28.513180][ T43] bridge0: port 2(bridge_slave_1) entered disabled state [ 28.523851][ T43] device bridge_slave_0 left promiscuous mode [ 28.530422][ T43] bridge0: port 1(bridge_slave_0) entered disabled state [ 28.541507][ T43] device veth1_macvtap left promiscuous mode [ 28.552227][ T43] device veth0_vlan left promiscuous mode 2026/08/08 14:12:27 executed programs: 0 [ 29.196929][ T369] bridge0: port 1(bridge_slave_0) entered blocking state [ 29.203995][ T369] bridge0: port 1(bridge_slave_0) entered disabled state [ 29.211535][ T369] device bridge_slave_0 entered promiscuous mode [ 29.218537][ T369] bridge0: port 2(bridge_slave_1) entered blocking state [ 29.225581][ T369] bridge0: port 2(bridge_slave_1) entered disabled state [ 29.233243][ T369] device bridge_slave_1 entered promiscuous mode [ 29.280813][ T369] bridge0: port 2(bridge_slave_1) entered blocking state [ 29.287895][ T369] bridge0: port 2(bridge_slave_1) entered forwarding state [ 29.295161][ T369] bridge0: port 1(bridge_slave_0) entered blocking state [ 29.302272][ T369] bridge0: port 1(bridge_slave_0) entered forwarding state [ 29.324024][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 29.331906][ T10] bridge0: port 1(bridge_slave_0) entered disabled state [ 29.339285][ T10] bridge0: port 2(bridge_slave_1) entered disabled state [ 29.348820][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 29.357199][ T10] bridge0: port 1(bridge_slave_0) entered blocking state [ 29.364261][ T10] bridge0: port 1(bridge_slave_0) entered forwarding state [ 29.373220][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 29.381929][ T10] bridge0: port 2(bridge_slave_1) entered blocking state [ 29.389035][ T10] bridge0: port 2(bridge_slave_1) entered forwarding state [ 29.402458][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 29.412754][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 29.428272][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 29.440910][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 29.449477][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 29.457304][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 29.465687][ T369] device veth0_vlan entered promiscuous mode [ 29.487388][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 29.497170][ T369] device veth1_macvtap entered promiscuous mode [ 29.508355][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 29.519287][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 29.596100][ C1] ================================================================== [ 29.604243][ C1] BUG: KASAN: use-after-free in rcu_cblist_dequeue+0x6c/0xb0 [ 29.611676][ C1] Read of size 8 at addr ffff888112d47190 by task ksoftirqd/1/23 [ 29.619425][ C1] [ 29.621792][ C1] CPU: 1 PID: 23 Comm: ksoftirqd/1 Not tainted syzkaller #0 [ 29.629112][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 29.639215][ C1] Call Trace: [ 29.642554][ C1] [ 29.645510][ C1] __dump_stack+0x21/0x24 [ 29.649906][ C1] dump_stack_lvl+0x110/0x170 [ 29.654618][ C1] ? __cfi_dump_stack_lvl+0x8/0x8 [ 29.659680][ C1] ? debug_smp_processor_id+0x17/0x20 [ 29.665101][ C1] ? rcu_cblist_dequeue+0x6c/0xb0 [ 29.670180][ C1] print_address_description+0x71/0x200 [ 29.675776][ C1] print_report+0x4a/0x60 [ 29.680140][ C1] kasan_report+0x122/0x150 [ 29.684681][ C1] ? rcu_cblist_dequeue+0x6c/0xb0 [ 29.689738][ C1] __asan_report_load8_noabort+0x14/0x20 [ 29.695396][ C1] rcu_cblist_dequeue+0x6c/0xb0 [ 29.700288][ C1] rcu_do_batch+0x4bc/0xc30 [ 29.704833][ C1] ? rcu_core+0xf00/0xf00 [ 29.709251][ C1] rcu_core+0x486/0xf00 [ 29.713440][ C1] ? kvm_sched_clock_read+0x18/0x40 [ 29.718677][ C1] ? sched_clock+0x9/0x10 [ 29.723052][ C1] ? rcu_cpu_kthread_park+0x90/0x90 [ 29.728283][ C1] ? __this_cpu_preempt_check+0x13/0x20 [ 29.733868][ C1] ? rcu_softirq_qs+0xd5/0x340 [ 29.738764][ C1] ? __cfi_rcu_softirq_qs+0x10/0x10 [ 29.744005][ C1] ? irqtime_account_irq+0x75/0x240 [ 29.749239][ C1] rcu_core_si+0x9/0x10 [ 29.753434][ C1] handle_softirqs+0x1d7/0x600 [ 29.758244][ C1] ? __cfi_run_ksoftirqd+0x10/0x10 [ 29.763447][ C1] run_ksoftirqd+0x28/0x30 [ 29.767909][ C1] smpboot_thread_fn+0x48c/0x8e0 [ 29.772889][ C1] kthread+0x281/0x320 [ 29.777008][ C1] ? __cfi_smpboot_thread_fn+0x10/0x10 [ 29.782518][ C1] ? __cfi_kthread+0x10/0x10 [ 29.787145][ C1] ret_from_fork+0x1f/0x30 [ 29.791603][ C1] [ 29.794654][ C1] [ 29.797006][ C1] Allocated by task 373: [ 29.801345][ C1] kasan_set_track+0x4b/0x70 [ 29.805994][ C1] kasan_save_alloc_info+0x1f/0x30 [ 29.811151][ C1] __kasan_kmalloc+0x95/0xb0 [ 29.815797][ C1] __kmalloc+0xb4/0x1e0 [ 29.819988][ C1] l2tp_session_create+0x38/0xbd0 [ 29.825064][ C1] pppol2tp_connect+0xbf5/0x1640 [ 29.830038][ C1] __sys_connect+0x3da/0x460 [ 29.834688][ C1] __x64_sys_connect+0x7a/0x90 [ 29.839494][ C1] x64_sys_call+0x88d/0x9a0 [ 29.844037][ C1] do_syscall_64+0x4c/0xa0 [ 29.848495][ C1] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 29.854423][ C1] [ 29.856774][ C1] Freed by task 10: [ 29.860713][ C1] kasan_set_track+0x4b/0x70 [ 29.865389][ C1] kasan_save_free_info+0x2b/0x40 [ 29.870461][ C1] ____kasan_slab_free+0x132/0x180 [ 29.875618][ C1] __kasan_slab_free+0x11/0x20 [ 29.880425][ C1] slab_free_freelist_hook+0xc2/0x190 [ 29.885818][ C1] __kmem_cache_free+0xb7/0x1b0 [ 29.890690][ C1] kfree+0x6f/0xf0 [ 29.894562][ C1] l2tp_session_put+0xaf/0x1a0 [ 29.899358][ C1] l2tp_session_delete+0x3df/0x4d0 [ 29.904508][ C1] l2tp_tunnel_del_work+0x199/0x410 [ 29.909735][ C1] process_one_work+0x717/0xc30 [ 29.914606][ C1] worker_thread+0xa4d/0x11d0 [ 29.919303][ C1] kthread+0x281/0x320 [ 29.923396][ C1] ret_from_fork+0x1f/0x30 [ 29.927844][ C1] [ 29.930183][ C1] Last potentially related work creation: [ 29.935914][ C1] kasan_save_stack+0x3a/0x60 [ 29.940625][ C1] __kasan_record_aux_stack+0xb6/0xc0 [ 29.946012][ C1] kasan_record_aux_stack_noalloc+0xb/0x10 [ 29.951830][ C1] call_rcu+0xcf/0xf50 [ 29.955930][ C1] pppol2tp_release+0x1e3/0x2b0 [ 29.960824][ C1] sock_close+0xc9/0x220 [ 29.965097][ C1] __fput+0x1fd/0x8f0 [ 29.969107][ C1] ____fput+0x15/0x20 [ 29.973117][ C1] task_work_run+0x1e1/0x250 [ 29.977731][ C1] exit_to_user_mode_loop+0x9b/0xb0 [ 29.982951][ C1] exit_to_user_mode_prepare+0x87/0xd0 [ 29.988433][ C1] syscall_exit_to_user_mode+0x1a/0x30 [ 29.993908][ C1] do_syscall_64+0x58/0xa0 [ 29.998344][ C1] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 30.004264][ C1] [ 30.006605][ C1] The buggy address belongs to the object at ffff888112d47000 [ 30.006605][ C1] which belongs to the cache kmalloc-512 of size 512 [ 30.020671][ C1] The buggy address is located 400 bytes inside of [ 30.020671][ C1] 512-byte region [ffff888112d47000, ffff888112d47200) [ 30.033969][ C1] [ 30.036311][ C1] The buggy address belongs to the physical page: [ 30.042767][ C1] page:ffffea00044b5100 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x112d44 [ 30.053019][ C1] head:ffffea00044b5100 order:2 compound_mapcount:0 compound_pincount:0 [ 30.061361][ C1] flags: 0x4000000000010200(slab|head|zone=1) [ 30.067464][ C1] raw: 4000000000010200 ffffea00044ad100 dead000000000002 ffff888100042f00 [ 30.076069][ C1] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 [ 30.084660][ C1] page dumped because: kasan: bad access detected [ 30.091091][ C1] page_owner tracks the page as allocated [ 30.096838][ C1] page last allocated via order 2, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 111, tgid 111 (udevd), ts 6071507442, free_ts 0 [ 30.116484][ C1] post_alloc_hook+0x1f5/0x210 [ 30.121285][ C1] prep_new_page+0x1c/0x110 [ 30.125816][ C1] get_page_from_freelist+0x2ca9/0x2d20 [ 30.131421][ C1] __alloc_pages+0x1fa/0x610 [ 30.136034][ C1] alloc_slab_page+0x6e/0xf0 [ 30.140643][ C1] new_slab+0x98/0x3e0 [ 30.144727][ C1] ___slab_alloc+0x70f/0xb70 [ 30.149345][ C1] __slab_alloc+0x5e/0xa0 [ 30.153701][ C1] __kmem_cache_alloc_node+0x204/0x2d0 [ 30.159180][ C1] __kmalloc_node_track_caller+0xa1/0x1e0 [ 30.164914][ C1] __alloc_skb+0x226/0x4a0 [ 30.169346][ C1] alloc_skb_with_frags+0xa8/0x620 [ 30.174504][ C1] sock_alloc_send_pskb+0x87f/0x9a0 [ 30.179754][ C1] unix_dgram_sendmsg+0x5c1/0x1710 [ 30.184891][ C1] sock_write_iter+0x2ea/0x3f0 [ 30.189688][ C1] vfs_write+0x5ef/0xd00 [ 30.193954][ C1] page_owner free stack trace missing [ 30.199358][ C1] [ 30.201697][ C1] Memory state around the buggy address: [ 30.207336][ C1] ffff888112d47080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.215420][ C1] ffff888112d47100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.223505][ C1] >ffff888112d47180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.231577][ C1] ^ [ 30.236180][ C1] ffff888112d47200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 30.244266][ C1] ffff888112d47280: fc fc fc fc fc