cess permissive=1 [ 14.541585][ T24] audit: type=1400 audit(1786241296.509:63): 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 '10.128.1.98' (ED25519) to the list of known hosts. 2026/08/09 02:08:25 parsed 1 programs 2026/08/09 02:08:25 serving rpc on tcp://42369 [ 23.068225][ T24] audit: type=1400 audit(1786241305.059:64): 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 [ 23.089334][ T24] audit: type=1400 audit(1786241305.059:65): 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 [ 23.109163][ T24] audit: type=1400 audit(1786241305.059:66): 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 [ 23.667792][ T24] audit: type=1400 audit(1786241305.659:67): 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 [ 23.668792][ T293] cgroup: Unknown subsys name 'net' [ 23.690439][ T24] audit: type=1400 audit(1786241305.659:68): 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 [ 23.717671][ T24] audit: type=1400 audit(1786241305.689:69): 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 [ 23.717817][ T293] cgroup: Unknown subsys name 'devices' [ 23.831456][ T293] cgroup: Unknown subsys name 'hugetlb' [ 23.837065][ T293] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 23.979234][ T24] audit: type=1400 audit(1786241305.969:70): 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 [ 23.992358][ T297] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). [ 24.002404][ T24] audit: type=1400 audit(1786241305.969:71): 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 [ 24.031304][ T293] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 24.031359][ T24] audit: type=1400 audit(1786241305.969:72): 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 [ 24.060254][ T24] audit: type=1400 audit(1786241305.969:73): 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 [ 24.413528][ T299] request_module fs-gadgetfs succeeded, but still no fs? [ 24.423404][ T299] cgroup: cgroup: disabling cgroup2 socket matching due to net_prio or net_cls activation [ 24.889464][ T338] bridge0: port 1(bridge_slave_0) entered blocking state [ 24.897261][ T338] bridge0: port 1(bridge_slave_0) entered disabled state [ 24.904802][ T338] device bridge_slave_0 entered promiscuous mode [ 24.911628][ T338] bridge0: port 2(bridge_slave_1) entered blocking state [ 24.918633][ T338] bridge0: port 2(bridge_slave_1) entered disabled state [ 24.925993][ T338] device bridge_slave_1 entered promiscuous mode [ 24.962560][ T338] bridge0: port 2(bridge_slave_1) entered blocking state [ 24.969606][ T338] bridge0: port 2(bridge_slave_1) entered forwarding state [ 24.976858][ T338] bridge0: port 1(bridge_slave_0) entered blocking state [ 24.983878][ T338] bridge0: port 1(bridge_slave_0) entered forwarding state [ 24.998681][ T325] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 25.006433][ T325] bridge0: port 1(bridge_slave_0) entered disabled state [ 25.013686][ T325] bridge0: port 2(bridge_slave_1) entered disabled state [ 25.023784][ T325] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 25.032346][ T325] bridge0: port 1(bridge_slave_0) entered blocking state [ 25.039359][ T325] bridge0: port 1(bridge_slave_0) entered forwarding state [ 25.046702][ T325] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 25.054919][ T325] bridge0: port 2(bridge_slave_1) entered blocking state [ 25.061941][ T325] bridge0: port 2(bridge_slave_1) entered forwarding state [ 25.073695][ T325] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 25.082452][ T325] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 25.094460][ T325] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 25.104620][ T325] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 25.112682][ T325] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 25.119980][ T325] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 25.128202][ T338] device veth0_vlan entered promiscuous mode [ 25.137078][ T325] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 25.145836][ T338] device veth1_macvtap entered promiscuous mode [ 25.154382][ T325] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 25.163918][ T325] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready 2026/08/09 02:08:27 executed programs: 0 [ 25.495009][ T365] bridge0: port 1(bridge_slave_0) entered blocking state [ 25.502111][ T365] bridge0: port 1(bridge_slave_0) entered disabled state [ 25.509310][ T365] device bridge_slave_0 entered promiscuous mode [ 25.521156][ T365] bridge0: port 2(bridge_slave_1) entered blocking state [ 25.528186][ T365] bridge0: port 2(bridge_slave_1) entered disabled state [ 25.535779][ T365] device bridge_slave_1 entered promiscuous mode [ 25.572003][ T365] bridge0: port 2(bridge_slave_1) entered blocking state [ 25.579026][ T365] bridge0: port 2(bridge_slave_1) entered forwarding state [ 25.586278][ T365] bridge0: port 1(bridge_slave_0) entered blocking state [ 25.593294][ T365] bridge0: port 1(bridge_slave_0) entered forwarding state [ 25.612842][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 25.620402][ T9] bridge0: port 1(bridge_slave_0) entered disabled state [ 25.627565][ T9] bridge0: port 2(bridge_slave_1) entered disabled state [ 25.637928][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 25.646186][ T9] bridge0: port 1(bridge_slave_0) entered blocking state [ 25.653222][ T9] bridge0: port 1(bridge_slave_0) entered forwarding state [ 25.672810][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 25.681284][ T9] bridge0: port 2(bridge_slave_1) entered blocking state [ 25.688297][ T9] bridge0: port 2(bridge_slave_1) entered forwarding state [ 25.695762][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 25.703844][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 25.713423][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 25.725292][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 25.733264][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 25.740682][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 25.748752][ T365] device veth0_vlan entered promiscuous mode [ 25.758328][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 25.767070][ T365] device veth1_macvtap entered promiscuous mode [ 25.775699][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 25.785102][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 25.805628][ T403] ================================================================== [ 25.813725][ T403] BUG: KASAN: use-after-free in mutex_lock+0x85/0xf0 [ 25.820408][ T403] Write of size 8 at addr ffff888110f55550 by task syz.2.17/403 [ 25.828016][ T403] [ 25.830338][ T403] CPU: 1 PID: 403 Comm: syz.2.17 Not tainted syzkaller #0 [ 25.837415][ T403] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 25.847459][ T403] Call Trace: [ 25.850730][ T403] __dump_stack+0x21/0x24 [ 25.855052][ T403] dump_stack_lvl+0x1a7/0x208 [ 25.859703][ T403] ? show_regs_print_info+0x18/0x18 [ 25.864881][ T403] ? thaw_kernel_threads+0x220/0x220 [ 25.870151][ T403] ? debug_smp_processor_id+0x17/0x20 [ 25.875593][ T403] print_address_description+0x7f/0x2c0 [ 25.881113][ T403] ? mutex_lock+0x85/0xf0 [ 25.885419][ T403] kasan_report+0x100/0x140 [ 25.889903][ T403] ? mutex_lock+0x85/0xf0 [ 25.894207][ T403] kasan_check_range+0x249/0x2a0 [ 25.899128][ T403] __kasan_check_write+0x14/0x20 [ 25.904041][ T403] mutex_lock+0x85/0xf0 [ 25.908172][ T403] ? mutex_trylock+0xb0/0xb0 [ 25.912739][ T403] ? l2tp_session_put+0xb2/0x1a0 [ 25.917652][ T403] ? l2tp_session_delete+0x3a9/0x4a0 [ 25.922911][ T403] pppol2tp_release+0x178/0x2b0 [ 25.927750][ T403] sock_close+0xb8/0x200 [ 25.931967][ T403] ? sock_mmap+0xa0/0xa0 [ 25.936185][ T403] __fput+0x2dc/0x730 [ 25.940141][ T403] ____fput+0x15/0x20 [ 25.944095][ T403] task_work_run+0x127/0x190 [ 25.948660][ T403] exit_to_user_mode_loop+0xcb/0xe0 [ 25.953831][ T403] exit_to_user_mode_prepare+0x76/0xa0 [ 25.959266][ T403] syscall_exit_to_user_mode+0x1d/0x40 [ 25.964700][ T403] do_syscall_64+0x3d/0x40 [ 25.969093][ T403] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 25.974959][ T403] RIP: 0033:0x7f992e6330d9 [ 25.979352][ T403] 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 [ 25.998932][ T403] RSP: 002b:00007ffe5463b4c8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 [ 26.007336][ T403] RAX: 0000000000000000 RBX: 00007ffe5463b5b0 RCX: 00007f992e6330d9 [ 26.015394][ T403] RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 [ 26.023373][ T403] RBP: 00000000000064b8 R08: 0000000000000001 R09: 0000000000000000 [ 26.031321][ T403] R10: 0000001b32c20000 R11: 0000000000000246 R12: 0000000000000000 [ 26.039267][ T403] R13: 00007f992e8bafac R14: 00007f992e8bafa8 R15: 00007f992e8bafa0 [ 26.047214][ T403] [ 26.049516][ T403] Allocated by task 403: [ 26.053736][ T403] __kasan_kmalloc+0xd4/0x100 [ 26.058387][ T403] __kmalloc+0x19f/0x330 [ 26.062604][ T403] l2tp_session_create+0x39/0xb60 [ 26.067605][ T403] pppol2tp_connect+0xbf5/0x1640 [ 26.072517][ T403] __sys_connect+0x3ce/0x450 [ 26.077081][ T403] __x64_sys_connect+0x7a/0x90 [ 26.081831][ T403] do_syscall_64+0x31/0x40 [ 26.086253][ T403] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 26.092117][ T403] [ 26.094426][ T403] Freed by task 403: [ 26.098297][ T403] kasan_set_track+0x4a/0x70 [ 26.102859][ T403] kasan_set_free_info+0x23/0x40 [ 26.107769][ T403] ____kasan_slab_free+0x125/0x160 [ 26.112851][ T403] __kasan_slab_free+0x11/0x20 [ 26.117616][ T403] slab_free_freelist_hook+0xc5/0x190 [ 26.122993][ T403] kfree+0xc0/0x270 [ 26.126781][ T403] l2tp_session_put+0xb2/0x1a0 [ 26.131517][ T403] l2tp_session_delete+0x3a9/0x4a0 [ 26.136719][ T403] pppol2tp_release+0x169/0x2b0 [ 26.141545][ T403] sock_close+0xb8/0x200 [ 26.145762][ T403] __fput+0x2dc/0x730 [ 26.149724][ T403] ____fput+0x15/0x20 [ 26.153680][ T403] task_work_run+0x127/0x190 [ 26.158244][ T403] exit_to_user_mode_loop+0xcb/0xe0 [ 26.163423][ T403] exit_to_user_mode_prepare+0x76/0xa0 [ 26.168859][ T403] syscall_exit_to_user_mode+0x1d/0x40 [ 26.174291][ T403] do_syscall_64+0x3d/0x40 [ 26.178684][ T403] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 26.184544][ T403] [ 26.186854][ T403] The buggy address belongs to the object at ffff888110f55400 [ 26.186854][ T403] which belongs to the cache kmalloc-512 of size 512 [ 26.200967][ T403] The buggy address is located 336 bytes inside of [ 26.200967][ T403] 512-byte region [ffff888110f55400, ffff888110f55600) [ 26.214205][ T403] The buggy address belongs to the page: [ 26.219823][ T403] page:ffffea000443d500 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x110f54 [ 26.230029][ T403] head:ffffea000443d500 order:2 compound_mapcount:0 compound_pincount:0 [ 26.238325][ T403] flags: 0x4000000000010200(slab|head) [ 26.243759][ T403] raw: 4000000000010200 dead000000000100 dead000000000122 ffff888100043080 [ 26.252318][ T403] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 [ 26.260877][ T403] page dumped because: kasan: bad access detected [ 26.267260][ T403] page_owner tracks the page as allocated [ 26.272960][ T403] 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 365, ts 25796945433, free_ts 25773871001 [ 26.293336][ T403] prep_new_page+0x176/0x190 [ 26.297900][ T403] get_page_from_freelist+0x225f/0x23f0 [ 26.303421][ T403] __alloc_pages_nodemask+0x29a/0x640 [ 26.308763][ T403] new_slab+0x84/0x3f0 [ 26.312803][ T403] ___slab_alloc+0x2f8/0x4c0 [ 26.317364][ T403] __slab_alloc+0x63/0xa0 [ 26.321665][ T403] kmem_cache_alloc_trace+0x1a8/0x2e0 [ 26.327010][ T403] rtnl_newlink+0x14b/0x1830 [ 26.331572][ T403] rtnetlink_rcv_msg+0x9e9/0xca0 [ 26.336481][ T403] netlink_rcv_skb+0x1e9/0x430 [ 26.341217][ T403] rtnetlink_rcv+0x1c/0x20 [ 26.345604][ T403] netlink_unicast+0x86c/0xa30 [ 26.350344][ T403] netlink_sendmsg+0x949/0xb70 [ 26.355082][ T403] __sys_sendto+0x467/0x620 [ 26.359556][ T403] __x64_sys_sendto+0xe5/0x100 [ 26.364291][ T403] do_syscall_64+0x31/0x40 [ 26.368677][ T403] page last free stack trace: [ 26.373325][ T403] __free_pages_ok+0x80b/0x830 [ 26.378057][ T403] __free_pages+0xd8/0x390 [ 26.382442][ T403] __free_slab+0xcf/0x190 [ 26.386745][ T403] unfreeze_partials+0x150/0x180 [ 26.391650][ T403] put_cpu_partial+0xc1/0x180 [ 26.396296][ T403] __slab_free+0x2c9/0x3a0 [ 26.400686][ T403] ___cache_free+0x10e/0x130 [ 26.405246][ T403] qlink_free+0x50/0x90 [ 26.409372][ T403] qlist_free_all+0x5f/0xb0 [ 26.413846][ T403] kasan_quarantine_reduce+0x14a/0x160 [ 26.419273][ T403] __kasan_slab_alloc+0x2f/0xe0 [ 26.424096][ T403] slab_post_alloc_hook+0x5d/0x2f0 [ 26.429179][ T403] kmem_cache_alloc+0x15a/0x2d0 [ 26.434003][ T403] sock_alloc_inode+0x1b/0xb0 [ 26.438653][ T403] new_inode_pseudo+0x62/0x210 [ 26.443386][ T403] __sock_create+0x12c/0x770 [ 26.447945][ T403] [ 26.450245][ T403] Memory state around the buggy address: [ 26.455852][ T403] ffff888110f55400: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 26.463888][ T403] ffff888110f55480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 26.471929][ T403] >ffff888110f55500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 26.479957][ T403] ^ [ 26.486690][ T403] ffff888110f55580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 26.494722][ T403] ffff888110f55600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 26.502751][ T403] ================================================================== [ 26.510778][ T403] Disabling lock debugging due to kernel taint