rocess permissive=1 [ 15.384178][ T24] audit: type=1400 audit(1786621819.590:63): avc: denied { siginh } for pid=217 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 Warning: Permanently added '10.128.1.102' (ED25519) to the list of known hosts. 2026/08/13 11:50:29 parsed 1 programs 2026/08/13 11:50:29 serving rpc on tcp://35025 [ 25.567328][ T24] audit: type=1400 audit(1786621829.820:64): avc: denied { node_bind } for pid=287 comm="syz-execprog" saddr=::1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:node_t tclass=tcp_socket permissive=1 [ 25.588096][ T24] audit: type=1400 audit(1786621829.830:65): avc: denied { create } for pid=287 comm="syz-execprog" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=rawip_socket permissive=1 [ 25.608794][ T24] audit: type=1400 audit(1786621829.830:66): avc: denied { module_request } for pid=287 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 [ 26.563384][ T24] audit: type=1400 audit(1786621830.820:67): avc: denied { mounton } for pid=293 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 [ 26.567514][ T293] cgroup: Unknown subsys name 'net' [ 26.586674][ T24] audit: type=1400 audit(1786621830.820:68): avc: denied { mount } for pid=293 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 [ 26.613654][ T24] audit: type=1400 audit(1786621830.850:69): avc: denied { unmount } for pid=293 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1 [ 26.614185][ T293] cgroup: Unknown subsys name 'devices' [ 26.760023][ T293] cgroup: Unknown subsys name 'hugetlb' [ 26.765848][ T293] cgroup: Unknown subsys name 'rlimit' [ 26.975558][ T24] audit: type=1400 audit(1786621831.230:70): avc: denied { setattr } for pid=293 comm="syz-executor" name="raw-gadget" dev="devtmpfs" ino=253 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:device_t tclass=chr_file permissive=1 [ 26.999124][ T24] audit: type=1400 audit(1786621831.230:71): avc: denied { create } for pid=293 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 [ 27.020154][ T24] audit: type=1400 audit(1786621831.230:72): avc: denied { write } for pid=293 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 27.040651][ T24] audit: type=1400 audit(1786621831.240:73): avc: denied { read } for pid=293 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 27.064260][ T297] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). [ 27.108929][ T293] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 27.512836][ T300] request_module fs-gadgetfs succeeded, but still no fs? [ 27.526001][ T300] cgroup: cgroup: disabling cgroup2 socket matching due to net_prio or net_cls activation [ 27.942513][ T324] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.949940][ T324] bridge0: port 1(bridge_slave_0) entered disabled state [ 27.957747][ T324] device bridge_slave_0 entered promiscuous mode [ 27.966156][ T324] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.973541][ T324] bridge0: port 2(bridge_slave_1) entered disabled state [ 27.981205][ T324] device bridge_slave_1 entered promiscuous mode [ 28.027142][ T324] bridge0: port 2(bridge_slave_1) entered blocking state [ 28.035051][ T324] bridge0: port 2(bridge_slave_1) entered forwarding state [ 28.042849][ T324] bridge0: port 1(bridge_slave_0) entered blocking state [ 28.050053][ T324] bridge0: port 1(bridge_slave_0) entered forwarding state [ 28.068661][ T9] bridge0: port 1(bridge_slave_0) entered disabled state [ 28.076128][ T9] bridge0: port 2(bridge_slave_1) entered disabled state [ 28.084063][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 28.092400][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 28.102736][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 28.110997][ T9] bridge0: port 1(bridge_slave_0) entered blocking state [ 28.118456][ T9] bridge0: port 1(bridge_slave_0) entered forwarding state [ 28.128499][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 28.137426][ T9] bridge0: port 2(bridge_slave_1) entered blocking state [ 28.144787][ T9] bridge0: port 2(bridge_slave_1) entered forwarding state [ 28.159148][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 28.176065][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 28.185403][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 28.197066][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 28.205296][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 28.213164][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 28.221683][ T324] device veth0_vlan entered promiscuous mode [ 28.232343][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 28.242689][ T324] device veth1_macvtap entered promiscuous mode [ 28.253427][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 28.263912][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready 2026/08/13 11:50:33 executed programs: 0 [ 28.903382][ T376] bridge0: port 1(bridge_slave_0) entered blocking state [ 28.910741][ T376] bridge0: port 1(bridge_slave_0) entered disabled state [ 28.918315][ T376] device bridge_slave_0 entered promiscuous mode [ 28.925260][ T376] bridge0: port 2(bridge_slave_1) entered blocking state [ 28.932946][ T376] bridge0: port 2(bridge_slave_1) entered disabled state [ 28.941190][ T376] device bridge_slave_1 entered promiscuous mode [ 28.995218][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 29.003075][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 29.012743][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 29.022073][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 29.030442][ T9] bridge0: port 1(bridge_slave_0) entered blocking state [ 29.037483][ T9] bridge0: port 1(bridge_slave_0) entered forwarding state [ 29.045122][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 29.054708][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 29.063460][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 29.071728][ T9] bridge0: port 2(bridge_slave_1) entered blocking state [ 29.078794][ T9] bridge0: port 2(bridge_slave_1) entered forwarding state [ 29.090580][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 29.106452][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 29.121096][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 29.138611][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 29.147107][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 29.155359][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 29.164887][ T376] device veth0_vlan entered promiscuous mode [ 29.182232][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 29.191971][ T376] device veth1_macvtap entered promiscuous mode [ 29.203356][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 29.212502][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 29.222374][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 29.252139][ T380] ================================================================== [ 29.260277][ T380] BUG: KASAN: use-after-free in mutex_lock+0x85/0xf0 [ 29.267314][ T380] Write of size 8 at addr ffff8881114fdd50 by task syz.2.17/380 [ 29.275029][ T380] [ 29.277368][ T380] CPU: 0 PID: 380 Comm: syz.2.17 Not tainted syzkaller #0 [ 29.284522][ T380] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 29.294898][ T380] Call Trace: [ 29.298352][ T380] __dump_stack+0x21/0x24 [ 29.302709][ T380] dump_stack_lvl+0x1a7/0x208 [ 29.307696][ T380] ? show_regs_print_info+0x18/0x18 [ 29.313704][ T380] ? thaw_kernel_threads+0x220/0x220 [ 29.319106][ T380] ? debug_smp_processor_id+0x17/0x20 [ 29.324784][ T380] print_address_description+0x7f/0x2c0 [ 29.330516][ T380] ? mutex_lock+0x85/0xf0 [ 29.334856][ T380] kasan_report+0x100/0x140 [ 29.339382][ T380] ? mutex_lock+0x85/0xf0 [ 29.343868][ T380] kasan_check_range+0x249/0x2a0 [ 29.349066][ T380] __kasan_check_write+0x14/0x20 [ 29.354051][ T380] mutex_lock+0x85/0xf0 [ 29.358219][ T380] ? mutex_trylock+0xb0/0xb0 [ 29.362832][ T380] ? l2tp_session_put+0xb2/0x1a0 [ 29.367769][ T380] ? l2tp_session_delete+0x3a9/0x4a0 [ 29.373058][ T380] pppol2tp_release+0x178/0x2b0 [ 29.377934][ T380] sock_close+0xb8/0x200 [ 29.382199][ T380] ? sock_mmap+0xa0/0xa0 [ 29.386533][ T380] __fput+0x2dc/0x730 [ 29.390709][ T380] ____fput+0x15/0x20 [ 29.394699][ T380] task_work_run+0x127/0x190 [ 29.399513][ T380] exit_to_user_mode_loop+0xcb/0xe0 [ 29.404807][ T380] exit_to_user_mode_prepare+0x76/0xa0 [ 29.410274][ T380] syscall_exit_to_user_mode+0x1d/0x40 [ 29.415730][ T380] do_syscall_64+0x3d/0x40 [ 29.420252][ T380] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 29.426729][ T380] RIP: 0033:0x7f593b4c80d9 [ 29.431252][ T380] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 [ 29.452097][ T380] RSP: 002b:00007ffc69fdac88 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 [ 29.461174][ T380] RAX: 0000000000000000 RBX: 00007ffc69fdad70 RCX: 00007f593b4c80d9 [ 29.469846][ T380] RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 [ 29.478050][ T380] RBP: 0000000000007226 R08: 0000000000000001 R09: 0000000000000000 [ 29.486137][ T380] R10: 0000001b33720000 R11: 0000000000000246 R12: 0000000000000000 [ 29.494477][ T380] R13: 00007f593b74ffac R14: 00007f593b74ffa8 R15: 00007f593b74ffa0 [ 29.502883][ T380] [ 29.505217][ T380] Allocated by task 380: [ 29.509607][ T380] __kasan_kmalloc+0xd4/0x100 [ 29.514713][ T380] __kmalloc+0x19f/0x330 [ 29.519235][ T380] l2tp_session_create+0x39/0xb60 [ 29.524284][ T380] pppol2tp_connect+0xbf5/0x1640 [ 29.529588][ T380] __sys_connect+0x3ce/0x450 [ 29.534599][ T380] __x64_sys_connect+0x7a/0x90 [ 29.539988][ T380] do_syscall_64+0x31/0x40 [ 29.544411][ T380] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 29.550886][ T380] [ 29.553377][ T380] Freed by task 380: [ 29.557283][ T380] kasan_set_track+0x4a/0x70 [ 29.562093][ T380] kasan_set_free_info+0x23/0x40 [ 29.567039][ T380] ____kasan_slab_free+0x125/0x160 [ 29.572255][ T380] __kasan_slab_free+0x11/0x20 [ 29.577023][ T380] slab_free_freelist_hook+0xc5/0x190 [ 29.582517][ T380] kfree+0xc0/0x270 [ 29.586389][ T380] l2tp_session_put+0xb2/0x1a0 [ 29.591161][ T380] l2tp_session_delete+0x3a9/0x4a0 [ 29.596355][ T380] pppol2tp_release+0x169/0x2b0 [ 29.602433][ T380] sock_close+0xb8/0x200 [ 29.607914][ T380] __fput+0x2dc/0x730 [ 29.612671][ T380] ____fput+0x15/0x20 [ 29.617556][ T380] task_work_run+0x127/0x190 [ 29.625335][ T380] exit_to_user_mode_loop+0xcb/0xe0 [ 29.631689][ T380] exit_to_user_mode_prepare+0x76/0xa0 [ 29.640291][ T380] syscall_exit_to_user_mode+0x1d/0x40 [ 29.648563][ T380] do_syscall_64+0x3d/0x40 [ 29.654594][ T380] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 29.663773][ T380] [ 29.666356][ T380] The buggy address belongs to the object at ffff8881114fdc00 [ 29.666356][ T380] which belongs to the cache kmalloc-512 of size 512 [ 29.683640][ T380] The buggy address is located 336 bytes inside of [ 29.683640][ T380] 512-byte region [ffff8881114fdc00, ffff8881114fde00) [ 29.698171][ T380] The buggy address belongs to the page: [ 29.704521][ T380] page:ffffea0004453f00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1114fc [ 29.715597][ T380] head:ffffea0004453f00 order:2 compound_mapcount:0 compound_pincount:0 [ 29.724662][ T380] flags: 0x4000000000010200(slab|head) [ 29.730134][ T380] raw: 4000000000010200 dead000000000100 dead000000000122 ffff888100043080 [ 29.738812][ T380] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 [ 29.747600][ T380] page dumped because: kasan: bad access detected [ 29.754135][ T380] page_owner tracks the page as allocated [ 29.759987][ T380] 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 376, ts 29239690378, free_ts 29237159405 [ 29.780662][ T380] prep_new_page+0x176/0x190 [ 29.785254][ T380] get_page_from_freelist+0x225f/0x23f0 [ 29.790946][ T380] __alloc_pages_nodemask+0x29a/0x640 [ 29.796420][ T380] new_slab+0x84/0x3f0 [ 29.800488][ T380] ___slab_alloc+0x2f8/0x4c0 [ 29.805109][ T380] __slab_alloc+0x63/0xa0 [ 29.809483][ T380] __kmalloc_track_caller+0x1e4/0x310 [ 29.814986][ T380] __alloc_skb+0xdc/0x520 [ 29.819319][ T380] netlink_sendmsg+0x693/0xb70 [ 29.824081][ T380] __sys_sendto+0x467/0x620 [ 29.828585][ T380] __x64_sys_sendto+0xe5/0x100 [ 29.833424][ T380] do_syscall_64+0x31/0x40 [ 29.837990][ T380] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 29.843935][ T380] page last free stack trace: [ 29.848983][ T380] __free_pages_ok+0x80b/0x830 [ 29.853748][ T380] __free_pages+0xd8/0x390 [ 29.858161][ T380] __free_slab+0xcf/0x190 [ 29.862483][ T380] unfreeze_partials+0x150/0x180 [ 29.867412][ T380] put_cpu_partial+0xc1/0x180 [ 29.872088][ T380] __slab_free+0x2c9/0x3a0 [ 29.876681][ T380] ___cache_free+0x10e/0x130 [ 29.881367][ T380] qlink_free+0x50/0x90 [ 29.885606][ T380] qlist_free_all+0x5f/0xb0 [ 29.890192][ T380] kasan_quarantine_reduce+0x14a/0x160 [ 29.895671][ T380] __kasan_slab_alloc+0x2f/0xe0 [ 29.900529][ T380] slab_post_alloc_hook+0x5d/0x2f0 [ 29.905639][ T380] kmem_cache_alloc_trace+0x155/0x2e0 [ 29.911126][ T380] selinux_sk_alloc_security+0x63/0x140 [ 29.916672][ T380] security_sk_alloc+0x72/0xa0 [ 29.921517][ T380] sk_prot_alloc+0x12e/0x340 [ 29.926194][ T380] [ 29.928631][ T380] Memory state around the buggy address: [ 29.934258][ T380] ffff8881114fdc00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 29.942446][ T380] ffff8881114fdc80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 29.950556][ T380] >ffff8881114fdd00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 29.958624][ T380] ^ [ 29.965702][ T380] ffff8881114fdd80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 29.973806][ T380] ffff8881114fde00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 29.982013][ T380] ================================================================== [ 29.990081][ T380] Disabling lock debugging due to kernel taint