rocess permissive=1 [ 15.620917][ T28] audit: type=1400 audit(1792771020.421:63): avc: denied { siginh } for pid=231 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 Warning: Permanently added '10.128.0.112' (ED25519) to the list of known hosts. 2026/10/23 15:57:08 parsed 1 programs 2026/10/23 15:57:08 serving rpc on tcp://39501 [ 24.117552][ T28] audit: type=1400 audit(1792771028.921:64): 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 [ 24.138461][ T28] audit: type=1400 audit(1792771028.921:65): 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 [ 24.858051][ T28] audit: type=1400 audit(1792771029.661:66): 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 [ 24.859085][ T303] cgroup: Unknown subsys name 'net' [ 24.880751][ T28] audit: type=1400 audit(1792771029.661:67): 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 [ 24.908022][ T28] audit: type=1400 audit(1792771029.691:68): 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 [ 24.908180][ T303] cgroup: Unknown subsys name 'devices' [ 25.053195][ T303] cgroup: Unknown subsys name 'hugetlb' [ 25.058818][ T303] cgroup: Unknown subsys name 'rlimit' [ 25.166554][ T28] audit: type=1400 audit(1792771029.971:69): 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 [ 25.189721][ T28] audit: type=1400 audit(1792771029.971:70): 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 [ 25.210208][ T28] audit: type=1400 audit(1792771029.971:71): 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 [ 25.227655][ T306] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). [ 25.230609][ T28] audit: type=1400 audit(1792771029.971:72): 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 [ 25.259179][ T28] audit: type=1400 audit(1792771029.971:73): 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 Setting up swapspace version 1, size = 127995904 bytes [ 25.375259][ T303] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 26.002343][ T308] request_module fs-gadgetfs succeeded, but still no fs? [ 26.313245][ T325] syz-executor (325) used greatest stack depth: 22656 bytes left [ 26.390992][ T341] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.398080][ T341] bridge0: port 1(bridge_slave_0) entered disabled state [ 26.405772][ T341] device bridge_slave_0 entered promiscuous mode [ 26.413403][ T341] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.420415][ T341] bridge0: port 2(bridge_slave_1) entered disabled state [ 26.427788][ T341] device bridge_slave_1 entered promiscuous mode [ 26.464613][ T341] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.471668][ T341] bridge0: port 2(bridge_slave_1) entered forwarding state [ 26.478915][ T341] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.485943][ T341] bridge0: port 1(bridge_slave_0) entered forwarding state [ 26.502799][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 26.510416][ T8] bridge0: port 1(bridge_slave_0) entered disabled state [ 26.517786][ T8] bridge0: port 2(bridge_slave_1) entered disabled state [ 26.526836][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 26.535219][ T8] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.542257][ T8] bridge0: port 1(bridge_slave_0) entered forwarding state [ 26.551608][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 26.559750][ T8] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.566789][ T8] bridge0: port 2(bridge_slave_1) entered forwarding state [ 26.577675][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 26.586785][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 26.600397][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 26.610933][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 26.619038][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 26.626690][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 26.634931][ T341] device veth0_vlan entered promiscuous mode [ 26.647032][ T341] device veth1_macvtap entered promiscuous mode [ 26.654081][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 26.664321][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 26.674275][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 26.699195][ T341] syz-executor (341) used greatest stack depth: 21632 bytes left 2026/10/23 15:57:11 executed programs: 0 [ 27.112983][ T370] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.120038][ T370] bridge0: port 1(bridge_slave_0) entered disabled state [ 27.127592][ T370] device bridge_slave_0 entered promiscuous mode [ 27.140308][ T370] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.147420][ T370] bridge0: port 2(bridge_slave_1) entered disabled state [ 27.154896][ T370] device bridge_slave_1 entered promiscuous mode [ 27.192817][ T370] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.199888][ T370] bridge0: port 2(bridge_slave_1) entered forwarding state [ 27.207160][ T370] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.214206][ T370] bridge0: port 1(bridge_slave_0) entered forwarding state [ 27.236785][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 27.244706][ T8] bridge0: port 1(bridge_slave_0) entered disabled state [ 27.252538][ T8] bridge0: port 2(bridge_slave_1) entered disabled state [ 27.261069][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 27.269565][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 27.277854][ T8] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.284887][ T8] bridge0: port 1(bridge_slave_0) entered forwarding state [ 27.301832][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 27.310154][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 27.318581][ T8] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.325631][ T8] bridge0: port 2(bridge_slave_1) entered forwarding state [ 27.333086][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 27.341153][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 27.349165][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 27.357215][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 27.368187][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 27.376518][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 27.390538][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 27.398577][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 27.406959][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 27.414582][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 27.426639][ T370] device veth0_vlan entered promiscuous mode [ 27.435905][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 27.444104][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 27.453173][ T370] device veth1_macvtap entered promiscuous mode [ 27.464880][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 27.472458][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 27.480587][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 27.490205][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 27.498712][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 27.561614][ C1] ================================================================== [ 27.569715][ C1] BUG: KASAN: use-after-free in rcu_cblist_dequeue+0x6c/0xb0 [ 27.577103][ C1] Read of size 8 at addr ffff888127e00590 by task ksoftirqd/1/23 [ 27.584807][ C1] [ 27.587114][ C1] CPU: 1 PID: 23 Comm: ksoftirqd/1 Not tainted syzkaller #0 [ 27.594381][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026 [ 27.604423][ C1] Call Trace: [ 27.607691][ C1] [ 27.610624][ C1] __dump_stack+0x21/0x24 [ 27.614955][ C1] dump_stack_lvl+0x110/0x170 [ 27.619623][ C1] ? __cfi_dump_stack_lvl+0x8/0x8 [ 27.624634][ C1] ? debug_smp_processor_id+0x17/0x20 [ 27.629994][ C1] ? rcu_cblist_dequeue+0x6c/0xb0 [ 27.635006][ C1] print_address_description+0x71/0x200 [ 27.640540][ C1] print_report+0x4a/0x60 [ 27.644857][ C1] kasan_report+0x122/0x150 [ 27.649436][ C1] ? rcu_cblist_dequeue+0x6c/0xb0 [ 27.654447][ C1] __asan_report_load8_noabort+0x14/0x20 [ 27.660062][ C1] rcu_cblist_dequeue+0x6c/0xb0 [ 27.664897][ C1] rcu_do_batch+0x4bc/0xc30 [ 27.669428][ C1] ? rcu_core+0xf00/0xf00 [ 27.673770][ C1] ? _raw_spin_unlock_irqrestore+0x5a/0x80 [ 27.679582][ C1] ? rcu_report_qs_rnp+0x2b9/0x390 [ 27.684690][ C1] rcu_core+0x486/0xf00 [ 27.688839][ C1] ? rcu_cpu_kthread_park+0x90/0x90 [ 27.694025][ C1] ? __this_cpu_preempt_check+0x13/0x20 [ 27.699562][ C1] ? rcu_softirq_qs+0xd5/0x340 [ 27.704331][ C1] ? __cfi_rcu_softirq_qs+0x10/0x10 [ 27.709541][ C1] ? __schedule+0xcbb/0x1700 [ 27.714171][ C1] rcu_core_si+0x9/0x10 [ 27.718345][ C1] handle_softirqs+0x1dd/0x5f0 [ 27.723112][ C1] ? __cfi_run_ksoftirqd+0x10/0x10 [ 27.728222][ C1] run_ksoftirqd+0x28/0x30 [ 27.732635][ C1] smpboot_thread_fn+0x48c/0x8e0 [ 27.737582][ C1] kthread+0x281/0x320 [ 27.741686][ C1] ? __cfi_smpboot_thread_fn+0x10/0x10 [ 27.747147][ C1] ? __cfi_kthread+0x10/0x10 [ 27.751727][ C1] ret_from_fork+0x1f/0x30 [ 27.756136][ C1] [ 27.759137][ C1] [ 27.761439][ C1] Allocated by task 374: [ 27.765661][ C1] kasan_set_track+0x4b/0x70 [ 27.770236][ C1] kasan_save_alloc_info+0x1f/0x30 [ 27.775326][ C1] __kasan_kmalloc+0x95/0xb0 [ 27.779900][ C1] __kmalloc+0xb4/0x1e0 [ 27.784034][ C1] l2tp_session_create+0x38/0xbd0 [ 27.789046][ C1] pppol2tp_connect+0xbf5/0x1640 [ 27.793973][ C1] __sys_connect+0x3da/0x460 [ 27.798564][ C1] __x64_sys_connect+0x7a/0x90 [ 27.803333][ C1] x64_sys_call+0x88d/0x9a0 [ 27.807833][ C1] do_syscall_64+0x4c/0xa0 [ 27.812239][ C1] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 27.818124][ C1] [ 27.820428][ C1] Freed by task 8: [ 27.824122][ C1] kasan_set_track+0x4b/0x70 [ 27.828700][ C1] kasan_save_free_info+0x2b/0x40 [ 27.833710][ C1] ____kasan_slab_free+0x132/0x180 [ 27.838808][ C1] __kasan_slab_free+0x11/0x20 [ 27.843554][ C1] slab_free_freelist_hook+0xc2/0x190 [ 27.848908][ C1] __kmem_cache_free+0xb7/0x1b0 [ 27.853745][ C1] kfree+0x6f/0xf0 [ 27.857446][ C1] l2tp_session_put+0xaf/0x1a0 [ 27.862193][ C1] l2tp_session_delete+0x3df/0x4d0 [ 27.867291][ C1] l2tp_tunnel_del_work+0x199/0x410 [ 27.872474][ C1] process_one_work+0x717/0xc30 [ 27.877307][ C1] worker_thread+0xa4d/0x11d0 [ 27.881963][ C1] kthread+0x281/0x320 [ 27.886018][ C1] ret_from_fork+0x1f/0x30 [ 27.890420][ C1] [ 27.892728][ C1] Last potentially related work creation: [ 27.898419][ C1] kasan_save_stack+0x3a/0x60 [ 27.903083][ C1] __kasan_record_aux_stack+0xb6/0xc0 [ 27.908436][ C1] kasan_record_aux_stack_noalloc+0xb/0x10 [ 27.914220][ C1] call_rcu+0xcf/0xf50 [ 27.918279][ C1] pppol2tp_release+0x1e3/0x2b0 [ 27.923116][ C1] sock_close+0xc9/0x220 [ 27.927342][ C1] __fput+0x1fd/0x8f0 [ 27.931309][ C1] ____fput+0x15/0x20 [ 27.935363][ C1] task_work_run+0x1e1/0x250 [ 27.939938][ C1] exit_to_user_mode_loop+0x9b/0xb0 [ 27.945118][ C1] exit_to_user_mode_prepare+0x87/0xd0 [ 27.950558][ C1] syscall_exit_to_user_mode+0x1a/0x30 [ 27.956002][ C1] do_syscall_64+0x58/0xa0 [ 27.960402][ C1] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 27.966283][ C1] [ 27.968592][ C1] The buggy address belongs to the object at ffff888127e00400 [ 27.968592][ C1] which belongs to the cache kmalloc-512 of size 512 [ 27.982621][ C1] The buggy address is located 400 bytes inside of [ 27.982621][ C1] 512-byte region [ffff888127e00400, ffff888127e00600) [ 27.995881][ C1] [ 27.998183][ C1] The buggy address belongs to the physical page: [ 28.004573][ C1] page:ffffea00049f8000 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x127e00 [ 28.014802][ C1] head:ffffea00049f8000 order:2 compound_mapcount:0 compound_pincount:0 [ 28.023102][ C1] flags: 0x4000000000010200(slab|head|zone=1) [ 28.029161][ C1] raw: 4000000000010200 0000000000000000 dead000000000122 ffff888100042f00 [ 28.037761][ C1] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 [ 28.046333][ C1] page dumped because: kasan: bad access detected [ 28.052739][ C1] page_owner tracks the page as allocated [ 28.058433][ C1] page last allocated via order 2, migratetype Unmovable, gfp_mask 0x1d20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 370, tgid 370 (syz-executor), ts 27516260273, free_ts 26927670336 [ 28.080991][ C1] post_alloc_hook+0x1f5/0x210 [ 28.085747][ C1] prep_new_page+0x1c/0x110 [ 28.090234][ C1] get_page_from_freelist+0x2ca9/0x2d20 [ 28.095769][ C1] __alloc_pages+0x1fa/0x610 [ 28.100344][ C1] alloc_slab_page+0x6e/0xf0 [ 28.104916][ C1] new_slab+0x98/0x3e0 [ 28.108966][ C1] ___slab_alloc+0x70f/0xb70 [ 28.113554][ C1] __slab_alloc+0x5e/0xa0 [ 28.117865][ C1] __kmem_cache_alloc_node+0x204/0x2d0 [ 28.123308][ C1] __kmalloc_node_track_caller+0xa1/0x1e0 [ 28.129014][ C1] __alloc_skb+0x226/0x4a0 [ 28.133415][ C1] rtmsg_ifa+0xfa/0x1e0 [ 28.137556][ C1] __inet_insert_ifa+0x83f/0xa30 [ 28.142479][ C1] inet_rtm_newaddr+0x8be/0x1650 [ 28.147404][ C1] rtnetlink_rcv_msg+0xb28/0xde0 [ 28.152334][ C1] netlink_rcv_skb+0x200/0x450 [ 28.157082][ C1] page last free stack trace: [ 28.161731][ C1] free_unref_page_prepare+0x81b/0x820 [ 28.167186][ C1] free_unref_page+0x93/0x530 [ 28.171848][ C1] __free_pages+0x67/0x100 [ 28.176249][ C1] free_pages+0x82/0x90 [ 28.180405][ C1] kasan_depopulate_vmalloc_pte+0x6b/0x90 [ 28.186108][ C1] __apply_to_page_range+0x8db/0xc80 [ 28.191380][ C1] apply_to_existing_page_range+0x38/0x50 [ 28.197089][ C1] kasan_release_vmalloc+0x97/0xb0 [ 28.202182][ C1] __purge_vmap_area_lazy+0xf09/0x1870 [ 28.207628][ C1] drain_vmap_area_work+0x3e/0xd0 [ 28.212636][ C1] process_one_work+0x717/0xc30 [ 28.217470][ C1] worker_thread+0xa4d/0x11d0 [ 28.222132][ C1] kthread+0x281/0x320 [ 28.226183][ C1] ret_from_fork+0x1f/0x30 [ 28.230586][ C1] [ 28.232894][ C1] Memory state around the buggy address: [ 28.238506][ C1] ffff888127e00480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.246552][ C1] ffff888127e00500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.254594][ C1] >ffff888127e00580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.262639][ C1] ^ [ 28.267203][ C1] ffff888127e00600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 28.275243][ C1] ffff888127e00680: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 28.283283][ C1] ================================================================== [ 28.291369][ C1] Disabling lock debugging due to kernel taint