rocess permissive=1 [ 21.525234][ T30] audit: type=1400 audit(1783155024.726:63): avc: denied { siginh } for pid=265 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 Warning: Permanently added '10.128.0.191' (ED25519) to the list of known hosts. 2026/07/04 08:50:34 parsed 1 programs 2026/07/04 08:50:34 serving rpc on tcp://40243 [ 31.090054][ T30] audit: type=1400 audit(1783155034.336:64): avc: denied { node_bind } for pid=293 comm="syz-execprog" saddr=::1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:node_t tclass=tcp_socket permissive=1 [ 31.110764][ T30] audit: type=1400 audit(1783155034.336:65): avc: denied { module_request } for pid=293 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 [ 32.060512][ T30] audit: type=1400 audit(1783155035.306:66): avc: denied { mounton } for pid=300 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 [ 32.063608][ T300] cgroup: Unknown subsys name 'net' [ 32.083164][ T30] audit: type=1400 audit(1783155035.306:67): avc: denied { mount } for pid=300 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 [ 32.110486][ T30] audit: type=1400 audit(1783155035.336:68): avc: denied { unmount } for pid=300 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1 [ 32.110897][ T300] cgroup: Unknown subsys name 'devices' [ 32.255296][ T300] cgroup: Unknown subsys name 'hugetlb' [ 32.260930][ T300] cgroup: Unknown subsys name 'rlimit' [ 32.406770][ T30] audit: type=1400 audit(1783155035.656:69): avc: denied { setattr } for pid=300 comm="syz-executor" name="raw-gadget" dev="devtmpfs" ino=254 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:device_t tclass=chr_file permissive=1 [ 32.429977][ T30] audit: type=1400 audit(1783155035.656:70): avc: denied { create } for pid=300 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 32.450375][ T30] audit: type=1400 audit(1783155035.656:71): avc: denied { write } for pid=300 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 32.470636][ T30] audit: type=1400 audit(1783155035.656:72): avc: denied { read } for pid=300 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 32.490820][ T30] audit: type=1400 audit(1783155035.656:73): avc: denied { mounton } for pid=300 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 [ 32.493229][ T303] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). Setting up swapspace version 1, size = 127995904 bytes [ 32.585205][ T300] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 33.014025][ T305] request_module fs-gadgetfs succeeded, but still no fs? [ 33.129968][ T314] bridge0: port 1(bridge_slave_0) entered blocking state [ 33.137304][ T314] bridge0: port 1(bridge_slave_0) entered disabled state [ 33.144946][ T314] device bridge_slave_0 entered promiscuous mode [ 33.152574][ T314] bridge0: port 2(bridge_slave_1) entered blocking state [ 33.159655][ T314] bridge0: port 2(bridge_slave_1) entered disabled state [ 33.167100][ T314] device bridge_slave_1 entered promiscuous mode [ 33.210145][ T314] bridge0: port 2(bridge_slave_1) entered blocking state [ 33.217405][ T314] bridge0: port 2(bridge_slave_1) entered forwarding state [ 33.224796][ T314] bridge0: port 1(bridge_slave_0) entered blocking state [ 33.231837][ T314] bridge0: port 1(bridge_slave_0) entered forwarding state [ 33.250780][ T45] bridge0: port 1(bridge_slave_0) entered disabled state [ 33.258102][ T45] bridge0: port 2(bridge_slave_1) entered disabled state [ 33.266063][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 33.273703][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 33.283231][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 33.291566][ T45] bridge0: port 1(bridge_slave_0) entered blocking state [ 33.298624][ T45] bridge0: port 1(bridge_slave_0) entered forwarding state [ 33.308077][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 33.316301][ T45] bridge0: port 2(bridge_slave_1) entered blocking state [ 33.323371][ T45] bridge0: port 2(bridge_slave_1) entered forwarding state [ 33.335610][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 33.345563][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 33.359579][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 33.370768][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 33.379000][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 33.386599][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 33.395695][ T314] device veth0_vlan entered promiscuous mode [ 33.405202][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 33.414800][ T314] device veth1_macvtap entered promiscuous mode [ 33.423937][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 33.434489][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 33.468626][ T314] syz-executor (314) used greatest stack depth: 21504 bytes left [ 34.075557][ T8] device bridge_slave_1 left promiscuous mode [ 34.081744][ T8] bridge0: port 2(bridge_slave_1) entered disabled state [ 34.089759][ T8] device bridge_slave_0 left promiscuous mode [ 34.096013][ T8] bridge0: port 1(bridge_slave_0) entered disabled state [ 34.104660][ T8] device veth1_macvtap left promiscuous mode [ 34.110691][ T8] device veth0_vlan left promiscuous mode 2026/07/04 08:50:37 executed programs: 0 [ 34.394469][ T367] bridge0: port 1(bridge_slave_0) entered blocking state [ 34.401544][ T367] bridge0: port 1(bridge_slave_0) entered disabled state [ 34.409018][ T367] device bridge_slave_0 entered promiscuous mode [ 34.415925][ T367] bridge0: port 2(bridge_slave_1) entered blocking state [ 34.423019][ T367] bridge0: port 2(bridge_slave_1) entered disabled state [ 34.430495][ T367] device bridge_slave_1 entered promiscuous mode [ 34.479634][ T367] bridge0: port 2(bridge_slave_1) entered blocking state [ 34.486702][ T367] bridge0: port 2(bridge_slave_1) entered forwarding state [ 34.493994][ T367] bridge0: port 1(bridge_slave_0) entered blocking state [ 34.501109][ T367] bridge0: port 1(bridge_slave_0) entered forwarding state [ 34.519095][ T315] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 34.526769][ T315] bridge0: port 1(bridge_slave_0) entered disabled state [ 34.534457][ T315] bridge0: port 2(bridge_slave_1) entered disabled state [ 34.546462][ T315] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 34.555052][ T315] bridge0: port 1(bridge_slave_0) entered blocking state [ 34.562073][ T315] bridge0: port 1(bridge_slave_0) entered forwarding state [ 34.569624][ T315] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 34.578255][ T315] bridge0: port 2(bridge_slave_1) entered blocking state [ 34.585308][ T315] bridge0: port 2(bridge_slave_1) entered forwarding state [ 34.596221][ T315] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 34.605383][ T315] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 34.619368][ T315] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 34.630339][ T315] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 34.638533][ T315] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 34.646084][ T315] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 34.654618][ T367] device veth0_vlan entered promiscuous mode [ 34.664329][ T315] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 34.673353][ T367] device veth1_macvtap entered promiscuous mode [ 34.682287][ T315] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 34.691999][ T315] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 34.714893][ T372] ================================================================== [ 34.723016][ T372] BUG: KASAN: use-after-free in mutex_lock+0x8e/0x1c0 [ 34.729795][ T372] Write of size 8 at addr ffff88811079ad50 by task syz.2.17/372 [ 34.737418][ T372] [ 34.739747][ T372] CPU: 0 PID: 372 Comm: syz.2.17 Not tainted syzkaller #0 [ 34.746857][ T372] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 34.756917][ T372] Call Trace: [ 34.760209][ T372] [ 34.763133][ T372] __dump_stack+0x21/0x30 [ 34.767458][ T372] dump_stack_lvl+0x110/0x170 [ 34.772134][ T372] ? show_regs_print_info+0x20/0x20 [ 34.777317][ T372] ? load_image+0x3f0/0x3f0 [ 34.781811][ T372] print_address_description+0x7f/0x2c0 [ 34.787351][ T372] ? mutex_lock+0x8e/0x1c0 [ 34.791761][ T372] kasan_report+0x10f/0x150 [ 34.796263][ T372] ? mutex_lock+0x8e/0x1c0 [ 34.800672][ T372] kasan_check_range+0x249/0x2a0 [ 34.805600][ T372] __kasan_check_write+0x14/0x20 [ 34.810532][ T372] mutex_lock+0x8e/0x1c0 [ 34.814763][ T372] ? wait_for_completion_killable_timeout+0x10/0x10 [ 34.821339][ T372] ? l2tp_session_put+0xaf/0x1a0 [ 34.826267][ T372] ? l2tp_session_delete+0x3a9/0x4a0 [ 34.831546][ T372] pppol2tp_release+0x178/0x2b0 [ 34.836386][ T372] sock_close+0xb8/0x200 [ 34.840620][ T372] ? sock_mmap+0xa0/0xa0 [ 34.844848][ T372] __fput+0x22b/0x900 [ 34.848827][ T372] ____fput+0x15/0x20 [ 34.852804][ T372] task_work_run+0x127/0x190 [ 34.857388][ T372] exit_to_user_mode_loop+0xd0/0xe0 [ 34.862582][ T372] exit_to_user_mode_prepare+0x87/0xd0 [ 34.868033][ T372] syscall_exit_to_user_mode+0x1a/0x30 [ 34.873497][ T372] do_syscall_64+0x58/0xa0 [ 34.877935][ T372] ? clear_bhb_loop+0x50/0xa0 [ 34.882612][ T372] ? clear_bhb_loop+0x50/0xa0 [ 34.887286][ T372] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 34.893175][ T372] RIP: 0033:0x7fa310eb6e59 [ 34.897597][ T372] 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 [ 34.917211][ T372] RSP: 002b:00007ffd164db7e8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 [ 34.925633][ T372] RAX: 0000000000000000 RBX: 00007ffd164db8d0 RCX: 00007fa310eb6e59 [ 34.933612][ T372] RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 [ 34.941601][ T372] RBP: 0000000000008778 R08: 0000000000000001 R09: 0000000000000000 [ 34.949694][ T372] R10: 0000001b32e20000 R11: 0000000000000246 R12: 0000000000000000 [ 34.957659][ T372] R13: 00007fa31113efac R14: 00007fa31113efa8 R15: 00007fa31113efa0 [ 34.965651][ T372] [ 34.968666][ T372] [ 34.970983][ T372] Allocated by task 372: [ 34.975235][ T372] __kasan_kmalloc+0xd4/0x100 [ 34.979908][ T372] __kmalloc+0x13d/0x2c0 [ 34.984145][ T372] l2tp_session_create+0x39/0xb60 [ 34.989165][ T372] pppol2tp_connect+0xbf5/0x1640 [ 34.994103][ T372] __sys_connect+0x3cb/0x450 [ 34.998691][ T372] __x64_sys_connect+0x7a/0x90 [ 35.003457][ T372] x64_sys_call+0x7c/0x9a0 [ 35.007972][ T372] do_syscall_64+0x4c/0xa0 [ 35.012411][ T372] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 35.018298][ T372] [ 35.020626][ T372] Freed by task 372: [ 35.024509][ T372] kasan_set_track+0x4a/0x70 [ 35.029109][ T372] kasan_set_free_info+0x23/0x40 [ 35.034034][ T372] ____kasan_slab_free+0x125/0x160 [ 35.039134][ T372] __kasan_slab_free+0x11/0x20 [ 35.043888][ T372] slab_free_freelist_hook+0xc2/0x190 [ 35.049249][ T372] kfree+0xc4/0x270 [ 35.053049][ T372] l2tp_session_put+0xaf/0x1a0 [ 35.057840][ T372] l2tp_session_delete+0x3a9/0x4a0 [ 35.062952][ T372] pppol2tp_release+0x169/0x2b0 [ 35.067801][ T372] sock_close+0xb8/0x200 [ 35.072043][ T372] __fput+0x22b/0x900 [ 35.076043][ T372] ____fput+0x15/0x20 [ 35.080020][ T372] task_work_run+0x127/0x190 [ 35.084599][ T372] exit_to_user_mode_loop+0xd0/0xe0 [ 35.089792][ T372] exit_to_user_mode_prepare+0x87/0xd0 [ 35.095245][ T372] syscall_exit_to_user_mode+0x1a/0x30 [ 35.100784][ T372] do_syscall_64+0x58/0xa0 [ 35.105193][ T372] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 35.111073][ T372] [ 35.113396][ T372] The buggy address belongs to the object at ffff88811079ac00 [ 35.113396][ T372] which belongs to the cache kmalloc-512 of size 512 [ 35.127469][ T372] The buggy address is located 336 bytes inside of [ 35.127469][ T372] 512-byte region [ffff88811079ac00, ffff88811079ae00) [ 35.140755][ T372] The buggy address belongs to the page: [ 35.146388][ T372] page:ffffea000441e600 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x110798 [ 35.156646][ T372] head:ffffea000441e600 order:2 compound_mapcount:0 compound_pincount:0 [ 35.164985][ T372] flags: 0x4000000000010200(slab|head|zone=1) [ 35.171073][ T372] raw: 4000000000010200 0000000000000000 0000000100000001 ffff888100042f00 [ 35.179770][ T372] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 [ 35.188353][ T372] page dumped because: kasan: bad access detected [ 35.194880][ T372] page_owner tracks the page as allocated [ 35.200697][ T372] page last allocated via order 2, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 107, ts 5370596328, free_ts 0 [ 35.218775][ T372] post_alloc_hook+0x192/0x1b0 [ 35.223555][ T372] prep_new_page+0x1c/0x110 [ 35.228067][ T372] get_page_from_freelist+0x2c3a/0x2cd0 [ 35.233625][ T372] __alloc_pages+0x1a2/0x460 [ 35.238224][ T372] new_slab+0xa0/0x4d0 [ 35.242307][ T372] ___slab_alloc+0x3ac/0x840 [ 35.246991][ T372] __slab_alloc+0x49/0x90 [ 35.251368][ T372] __kmalloc_track_caller+0x169/0x2c0 [ 35.256740][ T372] __alloc_skb+0x210/0x730 [ 35.261169][ T372] alloc_skb_with_frags+0xa8/0x620 [ 35.266544][ T372] sock_alloc_send_pskb+0x87f/0x9a0 [ 35.271750][ T372] unix_dgram_sendmsg+0x6f3/0x19b0 [ 35.276864][ T372] sock_write_iter+0x2a6/0x3a0 [ 35.281628][ T372] vfs_write+0x831/0xfd0 [ 35.286044][ T372] ksys_write+0x14a/0x260 [ 35.290374][ T372] __x64_sys_write+0x7b/0x90 [ 35.294964][ T372] page_owner free stack trace missing [ 35.300335][ T372] [ 35.302666][ T372] Memory state around the buggy address: [ 35.308302][ T372] ffff88811079ac00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 35.316378][ T372] ffff88811079ac80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 35.324445][ T372] >ffff88811079ad00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 35.332509][ T372] ^ [ 35.339181][ T372] ffff88811079ad80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 35.347240][ T372] ffff88811079ae00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 35.355385][ T372] ================================================================== [ 35.363443][ T372] Disabling lock debugging due to kernel taint