rocess permissive=1 [ 14.962197][ T30] audit: type=1400 audit(1784248933.045:63): avc: denied { siginh } for pid=223 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 Warning: Permanently added '10.128.1.124' (ED25519) to the list of known hosts. 2026/07/17 00:42:21 parsed 1 programs 2026/07/17 00:42:21 serving rpc on tcp://41299 [ 23.297088][ T30] audit: type=1400 audit(1784248941.385:64): 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 [ 23.317875][ T30] audit: type=1400 audit(1784248941.385:65): 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 [ 23.805580][ T30] audit: type=1400 audit(1784248941.895:66): avc: denied { mounton } for pid=299 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 [ 23.806453][ T299] cgroup: Unknown subsys name 'net' [ 23.828250][ T30] audit: type=1400 audit(1784248941.895:67): avc: denied { mount } for pid=299 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 [ 23.855453][ T30] audit: type=1400 audit(1784248941.925:68): avc: denied { unmount } for pid=299 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1 [ 23.855600][ T299] cgroup: Unknown subsys name 'devices' [ 23.969372][ T299] cgroup: Unknown subsys name 'hugetlb' [ 23.974955][ T299] cgroup: Unknown subsys name 'rlimit' [ 24.144472][ T30] audit: type=1400 audit(1784248942.235:69): avc: denied { setattr } for pid=299 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 [ 24.167703][ T30] audit: type=1400 audit(1784248942.235:70): avc: denied { create } for pid=299 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 [ 24.172264][ T304] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). [ 24.188218][ T30] audit: type=1400 audit(1784248942.235:71): avc: denied { write } for pid=299 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 24.216838][ T30] audit: type=1400 audit(1784248942.235:72): avc: denied { read } for pid=299 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 24.225218][ T299] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 24.237545][ T30] audit: type=1400 audit(1784248942.235:73): avc: denied { mounton } for pid=299 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 [ 24.569706][ T307] request_module fs-gadgetfs succeeded, but still no fs? [ 25.016399][ T352] bridge0: port 1(bridge_slave_0) entered blocking state [ 25.023489][ T352] bridge0: port 1(bridge_slave_0) entered disabled state [ 25.030905][ T352] device bridge_slave_0 entered promiscuous mode [ 25.037712][ T352] bridge0: port 2(bridge_slave_1) entered blocking state [ 25.044750][ T352] bridge0: port 2(bridge_slave_1) entered disabled state [ 25.052087][ T352] device bridge_slave_1 entered promiscuous mode [ 25.087057][ T352] bridge0: port 2(bridge_slave_1) entered blocking state [ 25.094096][ T352] bridge0: port 2(bridge_slave_1) entered forwarding state [ 25.101449][ T352] bridge0: port 1(bridge_slave_0) entered blocking state [ 25.108554][ T352] bridge0: port 1(bridge_slave_0) entered forwarding state [ 25.124576][ T335] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 25.132022][ T335] bridge0: port 1(bridge_slave_0) entered disabled state [ 25.139195][ T335] bridge0: port 2(bridge_slave_1) entered disabled state [ 25.147512][ T335] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 25.155766][ T335] bridge0: port 1(bridge_slave_0) entered blocking state [ 25.162784][ T335] bridge0: port 1(bridge_slave_0) entered forwarding state [ 25.171296][ T335] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 25.179401][ T335] bridge0: port 2(bridge_slave_1) entered blocking state [ 25.186389][ T335] bridge0: port 2(bridge_slave_1) entered forwarding state [ 25.196527][ T335] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 25.205178][ T335] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 25.217078][ T335] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 25.227123][ T335] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 25.235130][ T335] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 25.242603][ T335] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 25.250651][ T352] device veth0_vlan entered promiscuous mode [ 25.259250][ T335] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 25.267876][ T352] device veth1_macvtap entered promiscuous mode [ 25.275902][ T335] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 25.285131][ T335] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 25.308770][ T352] syz-executor (352) used greatest stack depth: 21960 bytes left 2026/07/17 00:42:23 executed programs: 0 [ 25.513525][ T368] bridge0: port 1(bridge_slave_0) entered blocking state [ 25.520600][ T368] bridge0: port 1(bridge_slave_0) entered disabled state [ 25.527798][ T368] device bridge_slave_0 entered promiscuous mode [ 25.534774][ T368] bridge0: port 2(bridge_slave_1) entered blocking state [ 25.541892][ T368] bridge0: port 2(bridge_slave_1) entered disabled state [ 25.549350][ T368] device bridge_slave_1 entered promiscuous mode [ 25.581407][ T368] bridge0: port 2(bridge_slave_1) entered blocking state [ 25.588442][ T368] bridge0: port 2(bridge_slave_1) entered forwarding state [ 25.595678][ T368] bridge0: port 1(bridge_slave_0) entered blocking state [ 25.602705][ T368] bridge0: port 1(bridge_slave_0) entered forwarding state [ 25.617079][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 25.624729][ T10] bridge0: port 1(bridge_slave_0) entered disabled state [ 25.632275][ T10] bridge0: port 2(bridge_slave_1) entered disabled state [ 25.646580][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 25.654754][ T10] bridge0: port 1(bridge_slave_0) entered blocking state [ 25.661768][ T10] bridge0: port 1(bridge_slave_0) entered forwarding state [ 25.673480][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 25.681633][ T10] bridge0: port 2(bridge_slave_1) entered blocking state [ 25.688648][ T10] bridge0: port 2(bridge_slave_1) entered forwarding state [ 25.699055][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 25.707661][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 25.723201][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 25.733111][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 25.741303][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 25.748848][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 25.756723][ T368] device veth0_vlan entered promiscuous mode [ 25.771029][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 25.779850][ T368] device veth1_macvtap entered promiscuous mode [ 25.788595][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 25.801163][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 25.819362][ T372] ================================================================== [ 25.827433][ T372] BUG: KASAN: use-after-free in mutex_lock+0x8e/0x1c0 [ 25.834197][ T372] Write of size 8 at addr ffff888110be5550 by task syz.2.17/372 [ 25.841795][ T372] [ 25.844096][ T372] CPU: 0 PID: 372 Comm: syz.2.17 Not tainted syzkaller #0 [ 25.851166][ T372] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/25/2026 [ 25.861193][ T372] Call Trace: [ 25.864442][ T372] [ 25.867342][ T372] __dump_stack+0x21/0x30 [ 25.871640][ T372] dump_stack_lvl+0x110/0x170 [ 25.876291][ T372] ? show_regs_print_info+0x20/0x20 [ 25.881456][ T372] ? load_image+0x3f0/0x3f0 [ 25.885936][ T372] print_address_description+0x7f/0x2c0 [ 25.891448][ T372] ? mutex_lock+0x8e/0x1c0 [ 25.895843][ T372] kasan_report+0x10f/0x150 [ 25.900327][ T372] ? mutex_lock+0x8e/0x1c0 [ 25.904717][ T372] kasan_check_range+0x249/0x2a0 [ 25.909623][ T372] __kasan_check_write+0x14/0x20 [ 25.914550][ T372] mutex_lock+0x8e/0x1c0 [ 25.918761][ T372] ? wait_for_completion_killable_timeout+0x10/0x10 [ 25.925331][ T372] ? l2tp_session_put+0xaf/0x1a0 [ 25.930236][ T372] ? l2tp_session_delete+0x3a9/0x4a0 [ 25.935494][ T372] pppol2tp_release+0x178/0x2b0 [ 25.940313][ T372] sock_close+0xb8/0x200 [ 25.944522][ T372] ? sock_mmap+0xa0/0xa0 [ 25.948740][ T372] __fput+0x22b/0x900 [ 25.952688][ T372] ____fput+0x15/0x20 [ 25.956634][ T372] task_work_run+0x127/0x190 [ 25.961200][ T372] exit_to_user_mode_loop+0xd0/0xe0 [ 25.966379][ T372] exit_to_user_mode_prepare+0x87/0xd0 [ 25.971889][ T372] syscall_exit_to_user_mode+0x1a/0x30 [ 25.977319][ T372] do_syscall_64+0x58/0xa0 [ 25.981710][ T372] ? clear_bhb_loop+0x50/0xa0 [ 25.986357][ T372] ? clear_bhb_loop+0x50/0xa0 [ 25.991012][ T372] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 25.996869][ T372] RIP: 0033:0x7fe123d8be59 [ 26.001248][ 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 [ 26.020817][ T372] RSP: 002b:00007ffc26095c28 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 [ 26.029208][ T372] RAX: 0000000000000000 RBX: 00007ffc26095d10 RCX: 00007fe123d8be59 [ 26.037159][ T372] RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 [ 26.045105][ T372] RBP: 00000000000064d2 R08: 0000000000000001 R09: 0000000000000000 [ 26.053048][ T372] R10: 0000001b32f20000 R11: 0000000000000246 R12: 0000000000000000 [ 26.060994][ T372] R13: 00007fe124013fac R14: 00007fe124013fa8 R15: 00007fe124013fa0 [ 26.068938][ T372] [ 26.071925][ T372] [ 26.074216][ T372] Allocated by task 372: [ 26.078420][ T372] __kasan_kmalloc+0xd4/0x100 [ 26.083067][ T372] __kmalloc+0x13d/0x2c0 [ 26.087274][ T372] l2tp_session_create+0x39/0xb60 [ 26.092263][ T372] pppol2tp_connect+0xbf5/0x1640 [ 26.097164][ T372] __sys_connect+0x3cb/0x450 [ 26.101718][ T372] __x64_sys_connect+0x7a/0x90 [ 26.106448][ T372] x64_sys_call+0x7c/0x9a0 [ 26.110832][ T372] do_syscall_64+0x4c/0xa0 [ 26.115214][ T372] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 26.121070][ T372] [ 26.123362][ T372] Freed by task 372: [ 26.127216][ T372] kasan_set_track+0x4a/0x70 [ 26.131781][ T372] kasan_set_free_info+0x23/0x40 [ 26.136683][ T372] ____kasan_slab_free+0x125/0x160 [ 26.141756][ T372] __kasan_slab_free+0x11/0x20 [ 26.146497][ T372] slab_free_freelist_hook+0xc2/0x190 [ 26.151845][ T372] kfree+0xc4/0x270 [ 26.155622][ T372] l2tp_session_put+0xaf/0x1a0 [ 26.160350][ T372] l2tp_session_delete+0x3a9/0x4a0 [ 26.165425][ T372] pppol2tp_release+0x169/0x2b0 [ 26.170241][ T372] sock_close+0xb8/0x200 [ 26.174445][ T372] __fput+0x22b/0x900 [ 26.178393][ T372] ____fput+0x15/0x20 [ 26.182339][ T372] task_work_run+0x127/0x190 [ 26.186891][ T372] exit_to_user_mode_loop+0xd0/0xe0 [ 26.192063][ T372] exit_to_user_mode_prepare+0x87/0xd0 [ 26.197485][ T372] syscall_exit_to_user_mode+0x1a/0x30 [ 26.202910][ T372] do_syscall_64+0x58/0xa0 [ 26.207290][ T372] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 26.213147][ T372] [ 26.215437][ T372] The buggy address belongs to the object at ffff888110be5400 [ 26.215437][ T372] which belongs to the cache kmalloc-512 of size 512 [ 26.229456][ T372] The buggy address is located 336 bytes inside of [ 26.229456][ T372] 512-byte region [ffff888110be5400, ffff888110be5600) [ 26.242702][ T372] The buggy address belongs to the page: [ 26.248308][ T372] page:ffffea000442f900 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x110be4 [ 26.258510][ T372] head:ffffea000442f900 order:2 compound_mapcount:0 compound_pincount:0 [ 26.266796][ T372] flags: 0x4000000000010200(slab|head|zone=1) [ 26.272840][ T372] raw: 4000000000010200 0000000000000000 dead000000000122 ffff888100042f00 [ 26.281394][ T372] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 [ 26.289939][ T372] page dumped because: kasan: bad access detected [ 26.296314][ T372] page_owner tracks the page as allocated [ 26.301999][ T372] 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 368, ts 25815233865, free_ts 25673492522 [ 26.322360][ T372] post_alloc_hook+0x192/0x1b0 [ 26.327095][ T372] prep_new_page+0x1c/0x110 [ 26.331559][ T372] get_page_from_freelist+0x2c3a/0x2cd0 [ 26.337065][ T372] __alloc_pages+0x1a2/0x460 [ 26.341618][ T372] new_slab+0xa0/0x4d0 [ 26.345648][ T372] ___slab_alloc+0x3ac/0x840 [ 26.350204][ T372] __slab_alloc+0x49/0x90 [ 26.354520][ T372] kmem_cache_alloc_trace+0x146/0x270 [ 26.359865][ T372] blkcg_css_alloc+0x65/0xb90 [ 26.364513][ T372] cgroup_apply_control_enable+0x37b/0xdb0 [ 26.370319][ T372] cgroup_mkdir+0x1171/0x13d0 [ 26.374987][ T372] kernfs_iop_mkdir+0x1a3/0x2b0 [ 26.379806][ T372] vfs_mkdir+0x38b/0x590 [ 26.384011][ T372] do_mkdirat+0x174/0x4d0 [ 26.388304][ T372] __x64_sys_mkdirat+0x89/0xa0 [ 26.393050][ T372] x64_sys_call+0x37e/0x9a0 [ 26.397532][ T372] page last free stack trace: [ 26.402173][ T372] free_unref_page_prepare+0x5fa/0x600 [ 26.407603][ T372] free_unref_page+0xae/0x540 [ 26.412247][ T372] __free_pages+0x6c/0x100 [ 26.416627][ T372] __free_slab+0xe5/0x1e0 [ 26.420931][ T372] __unfreeze_partials+0x15a/0x190 [ 26.426007][ T372] put_cpu_partial+0xc6/0x120 [ 26.430649][ T372] __slab_free+0x1d4/0x290 [ 26.435038][ T372] ___cache_free+0x104/0x120 [ 26.439594][ T372] qlink_free+0x4d/0x90 [ 26.443713][ T372] qlist_free_all+0x5f/0xb0 [ 26.448186][ T372] kasan_quarantine_reduce+0x14a/0x170 [ 26.453620][ T372] __kasan_slab_alloc+0x2f/0xe0 [ 26.458435][ T372] slab_post_alloc_hook+0x4f/0x2b0 [ 26.463512][ T372] kmem_cache_alloc+0xf7/0x260 [ 26.468240][ T372] __alloc_skb+0xe4/0x730 [ 26.472536][ T372] netlink_ack+0x35c/0xb10 [ 26.476918][ T372] [ 26.479212][ T372] Memory state around the buggy address: [ 26.484804][ T372] ffff888110be5400: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 26.492827][ T372] ffff888110be5480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 26.500850][ T372] >ffff888110be5500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 26.508879][ T372] ^ [ 26.515522][ T372] ffff888110be5580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 26.523565][ T372] ffff888110be5600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 26.531587][ T372] ================================================================== [ 26.539621][ T372] Disabling lock debugging due to kernel taint