ess permissive=1 [ 14.426808][ T28] audit: type=1400 audit(1782664974.381:63): avc: denied { siginh } for pid=225 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 Warning: Permanently added '10.128.1.89' (ED25519) to the list of known hosts. 2026/06/28 16:43:04 parsed 1 programs 2026/06/28 16:43:04 serving rpc on tcp://43609 [ 24.080311][ T28] audit: type=1400 audit(1782664984.041:64): 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 [ 24.101184][ T28] audit: type=1400 audit(1782664984.051:65): 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 [ 24.907510][ T28] audit: type=1400 audit(1782664984.871:66): avc: denied { mounton } for pid=301 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 [ 24.908501][ T301] cgroup: Unknown subsys name 'net' [ 24.930758][ T28] audit: type=1400 audit(1782664984.871:67): avc: denied { mount } for pid=301 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 [ 24.958061][ T28] audit: type=1400 audit(1782664984.901:68): avc: denied { unmount } for pid=301 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1 [ 24.958213][ T301] cgroup: Unknown subsys name 'devices' [ 25.102432][ T301] cgroup: Unknown subsys name 'hugetlb' [ 25.108104][ T301] cgroup: Unknown subsys name 'rlimit' [ 25.245887][ T28] audit: type=1400 audit(1782664985.211:69): avc: denied { setattr } for pid=301 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 [ 25.269209][ T28] audit: type=1400 audit(1782664985.211:70): avc: denied { create } for pid=301 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 25.289752][ T28] audit: type=1400 audit(1782664985.211:71): avc: denied { write } for pid=301 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 25.298708][ T305] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). [ 25.310059][ T28] audit: type=1400 audit(1782664985.211:72): avc: denied { read } for pid=301 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 [ 25.338829][ T28] audit: type=1400 audit(1782664985.211:73): avc: denied { mounton } for pid=301 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 [ 25.374329][ T301] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 26.066873][ T307] request_module fs-gadgetfs succeeded, but still no fs? [ 26.318968][ T324] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.326082][ T324] bridge0: port 1(bridge_slave_0) entered disabled state [ 26.334311][ T324] device bridge_slave_0 entered promiscuous mode [ 26.341148][ T324] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.348168][ T324] bridge0: port 2(bridge_slave_1) entered disabled state [ 26.355722][ T324] device bridge_slave_1 entered promiscuous mode [ 26.393938][ T324] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.401054][ T324] bridge0: port 2(bridge_slave_1) entered forwarding state [ 26.408353][ T324] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.415415][ T324] bridge0: port 1(bridge_slave_0) entered forwarding state [ 26.433795][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 26.441501][ T8] bridge0: port 1(bridge_slave_0) entered disabled state [ 26.448734][ T8] bridge0: port 2(bridge_slave_1) entered disabled state [ 26.457774][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 26.466153][ T8] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.473223][ T8] bridge0: port 1(bridge_slave_0) entered forwarding state [ 26.482802][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 26.491074][ T8] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.498121][ T8] bridge0: port 2(bridge_slave_1) entered forwarding state [ 26.509576][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 26.519123][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 26.533520][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 26.544445][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 26.552670][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 26.560077][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 26.569584][ T324] device veth0_vlan entered promiscuous mode [ 26.579696][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 26.589162][ T324] device veth1_macvtap entered promiscuous mode [ 26.598683][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 26.609628][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 26.646173][ T324] syz-executor (324) used greatest stack depth: 21024 bytes left 2026/06/28 16:43:07 executed programs: 0 [ 27.255825][ T369] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.263523][ T369] bridge0: port 1(bridge_slave_0) entered disabled state [ 27.271019][ T369] device bridge_slave_0 entered promiscuous mode [ 27.280198][ T369] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.287512][ T369] bridge0: port 2(bridge_slave_1) entered disabled state [ 27.294876][ T369] device bridge_slave_1 entered promiscuous mode [ 27.342449][ T43] device bridge_slave_1 left promiscuous mode [ 27.348613][ T43] bridge0: port 2(bridge_slave_1) entered disabled state [ 27.356126][ T43] device bridge_slave_0 left promiscuous mode [ 27.362360][ T43] bridge0: port 1(bridge_slave_0) entered disabled state [ 27.370084][ T43] device veth1_macvtap left promiscuous mode [ 27.376350][ T43] device veth0_vlan left promiscuous mode [ 27.458111][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 27.465684][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 27.474662][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 27.483097][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 27.491321][ T8] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.498349][ T8] bridge0: port 1(bridge_slave_0) entered forwarding state [ 27.505984][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 27.515999][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 27.524358][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 27.532546][ T8] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.539562][ T8] bridge0: port 2(bridge_slave_1) entered forwarding state [ 27.550956][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 27.559051][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 27.568001][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 27.576191][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 27.589584][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 27.598305][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 27.609262][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 27.617521][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 27.626071][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 27.633931][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 27.642371][ T369] device veth0_vlan entered promiscuous mode [ 27.652147][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 27.660345][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 27.669421][ T369] device veth1_macvtap entered promiscuous mode [ 27.678436][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 27.686248][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 27.694843][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 27.704827][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 27.713218][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 27.740901][ T374] ================================================================== [ 27.749002][ T374] BUG: KASAN: use-after-free in mutex_lock+0x86/0x1b0 [ 27.755868][ T374] Write of size 8 at addr ffff88812199d150 by task syz.2.17/374 [ 27.763502][ T374] [ 27.765837][ T374] CPU: 1 PID: 374 Comm: syz.2.17 Not tainted syzkaller #0 [ 27.772957][ T374] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 27.783037][ T374] Call Trace: [ 27.786422][ T374] [ 27.789369][ T374] __dump_stack+0x21/0x24 [ 27.793707][ T374] dump_stack_lvl+0x110/0x170 [ 27.798383][ T374] ? __cfi_dump_stack_lvl+0x8/0x8 [ 27.803413][ T374] ? mutex_lock+0x86/0x1b0 [ 27.807831][ T374] print_address_description+0x71/0x200 [ 27.813384][ T374] print_report+0x4a/0x60 [ 27.817723][ T374] kasan_report+0x122/0x150 [ 27.822219][ T374] ? mutex_lock+0x86/0x1b0 [ 27.826644][ T374] kasan_check_range+0x249/0x2a0 [ 27.831597][ T374] __kasan_check_write+0x14/0x20 [ 27.836538][ T374] mutex_lock+0x86/0x1b0 [ 27.840770][ T374] ? __cfi_mutex_lock+0x10/0x10 [ 27.845611][ T374] ? kfree+0x6f/0xf0 [ 27.849496][ T374] ? l2tp_session_put+0xaf/0x1a0 [ 27.854422][ T374] ? l2tp_session_delete+0x3df/0x4d0 [ 27.859714][ T374] pppol2tp_release+0x178/0x2b0 [ 27.864555][ T374] sock_close+0xc9/0x220 [ 27.868869][ T374] ? __cfi_sock_close+0x10/0x10 [ 27.873752][ T374] __fput+0x1fd/0x8f0 [ 27.877752][ T374] ____fput+0x15/0x20 [ 27.881836][ T374] task_work_run+0x1e1/0x250 [ 27.886419][ T374] ? __cfi_task_work_run+0x10/0x10 [ 27.891522][ T374] ? __cfi___close_range+0x10/0x10 [ 27.896624][ T374] exit_to_user_mode_loop+0x9b/0xb0 [ 27.901834][ T374] exit_to_user_mode_prepare+0x87/0xd0 [ 27.907284][ T374] syscall_exit_to_user_mode+0x1a/0x30 [ 27.912780][ T374] do_syscall_64+0x58/0xa0 [ 27.917197][ T374] ? clear_bhb_loop+0x30/0x80 [ 27.921870][ T374] ? clear_bhb_loop+0x30/0x80 [ 27.926535][ T374] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 27.932434][ T374] RIP: 0033:0x7fb52ff9ce59 [ 27.936960][ T374] 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 [ 27.956991][ T374] RSP: 002b:00007ffcadf13b08 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 [ 27.965516][ T374] RAX: 0000000000000000 RBX: 00007ffcadf13bf0 RCX: 00007fb52ff9ce59 [ 27.973495][ T374] RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 [ 27.981469][ T374] RBP: 0000000000006c3c R08: 0000000000000001 R09: 0000000000000000 [ 27.989434][ T374] R10: 0000001b32f20000 R11: 0000000000000246 R12: 0000000000000000 [ 27.997421][ T374] R13: 00007fb530215fac R14: 00007fb530215fa8 R15: 00007fb530215fa0 [ 28.005389][ T374] [ 28.008423][ T374] [ 28.010759][ T374] Allocated by task 374: [ 28.014990][ T374] kasan_set_track+0x4b/0x70 [ 28.019756][ T374] kasan_save_alloc_info+0x1f/0x30 [ 28.024889][ T374] __kasan_kmalloc+0x95/0xb0 [ 28.029515][ T374] __kmalloc+0xb4/0x1e0 [ 28.033673][ T374] l2tp_session_create+0x38/0xbd0 [ 28.038713][ T374] pppol2tp_connect+0xbf5/0x1640 [ 28.043661][ T374] __sys_connect+0x3da/0x460 [ 28.048248][ T374] __x64_sys_connect+0x7a/0x90 [ 28.053026][ T374] x64_sys_call+0x88d/0x9a0 [ 28.057523][ T374] do_syscall_64+0x4c/0xa0 [ 28.061994][ T374] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 28.067916][ T374] [ 28.070261][ T374] Freed by task 374: [ 28.074161][ T374] kasan_set_track+0x4b/0x70 [ 28.078773][ T374] kasan_save_free_info+0x2b/0x40 [ 28.083973][ T374] ____kasan_slab_free+0x132/0x180 [ 28.089095][ T374] __kasan_slab_free+0x11/0x20 [ 28.093876][ T374] slab_free_freelist_hook+0xc2/0x190 [ 28.099295][ T374] __kmem_cache_free+0xb7/0x1b0 [ 28.104144][ T374] kfree+0x6f/0xf0 [ 28.108044][ T374] l2tp_session_put+0xaf/0x1a0 [ 28.112795][ T374] l2tp_session_delete+0x3df/0x4d0 [ 28.117897][ T374] pppol2tp_release+0x169/0x2b0 [ 28.122732][ T374] sock_close+0xc9/0x220 [ 28.126965][ T374] __fput+0x1fd/0x8f0 [ 28.130936][ T374] ____fput+0x15/0x20 [ 28.134923][ T374] task_work_run+0x1e1/0x250 [ 28.139527][ T374] exit_to_user_mode_loop+0x9b/0xb0 [ 28.144765][ T374] exit_to_user_mode_prepare+0x87/0xd0 [ 28.150224][ T374] syscall_exit_to_user_mode+0x1a/0x30 [ 28.155681][ T374] do_syscall_64+0x58/0xa0 [ 28.160088][ T374] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 28.165974][ T374] [ 28.168302][ T374] The buggy address belongs to the object at ffff88812199d000 [ 28.168302][ T374] which belongs to the cache kmalloc-512 of size 512 [ 28.182427][ T374] The buggy address is located 336 bytes inside of [ 28.182427][ T374] 512-byte region [ffff88812199d000, ffff88812199d200) [ 28.195683][ T374] [ 28.198016][ T374] The buggy address belongs to the physical page: [ 28.204418][ T374] page:ffffea0004866700 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x12199c [ 28.214714][ T374] head:ffffea0004866700 order:2 compound_mapcount:0 compound_pincount:0 [ 28.223158][ T374] flags: 0x4000000000010200(slab|head|zone=1) [ 28.229231][ T374] raw: 4000000000010200 0000000000000000 dead000000000122 ffff888100042f00 [ 28.237806][ T374] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 [ 28.246459][ T374] page dumped because: kasan: bad access detected [ 28.253134][ T374] page_owner tracks the page as allocated [ 28.258835][ T374] page last allocated via order 2, migratetype Unmovable, gfp_mask 0x152a20(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_HARDWALL), pid 39, tgid 39 (kworker/1:1), ts 27730667845, free_ts 26971929293 [ 28.279055][ T374] post_alloc_hook+0x1f5/0x210 [ 28.283892][ T374] prep_new_page+0x1c/0x110 [ 28.288400][ T374] get_page_from_freelist+0x2ca9/0x2d20 [ 28.293967][ T374] __alloc_pages+0x1fa/0x610 [ 28.298553][ T374] alloc_slab_page+0x6e/0xf0 [ 28.303155][ T374] new_slab+0x98/0x3e0 [ 28.307213][ T374] ___slab_alloc+0x70f/0xb70 [ 28.311814][ T374] __slab_alloc+0x5e/0xa0 [ 28.316131][ T374] __kmem_cache_alloc_node+0x204/0x2d0 [ 28.321679][ T374] __kmalloc+0xa4/0x1e0 [ 28.325824][ T374] ___neigh_create+0x6e3/0x1db0 [ 28.330671][ T374] __neigh_create+0x31/0x40 [ 28.335245][ T374] ip6_finish_output2+0xaaf/0x18b0 [ 28.340340][ T374] ip6_finish_output+0x60b/0xbe0 [ 28.345259][ T374] ip6_output+0x1fa/0x410 [ 28.349573][ T374] mld_sendpack+0x7ce/0xda0 [ 28.354063][ T374] page last free stack trace: [ 28.358730][ T374] free_unref_page_prepare+0x80c/0x820 [ 28.364200][ T374] free_unref_page+0x93/0x530 [ 28.368868][ T374] __free_pages+0x67/0x100 [ 28.373284][ T374] __vunmap+0xa3c/0xc00 [ 28.377430][ T374] vfree+0x61/0x90 [ 28.381152][ T374] kcov_close+0x2b/0x50 [ 28.385585][ T374] __fput+0x1fd/0x8f0 [ 28.389586][ T374] ____fput+0x15/0x20 [ 28.393561][ T374] task_work_run+0x1e1/0x250 [ 28.398136][ T374] do_exit+0xaf2/0x2850 [ 28.402300][ T374] do_group_exit+0x21b/0x2e0 [ 28.406913][ T374] get_signal+0x1382/0x14f0 [ 28.411423][ T374] arch_do_signal_or_restart+0xd1/0x11c0 [ 28.417140][ T374] exit_to_user_mode_loop+0x7a/0xb0 [ 28.422338][ T374] exit_to_user_mode_prepare+0x87/0xd0 [ 28.427789][ T374] syscall_exit_to_user_mode+0x1a/0x30 [ 28.433240][ T374] [ 28.435674][ T374] Memory state around the buggy address: [ 28.441308][ T374] ffff88812199d000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.449365][ T374] ffff88812199d080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.457418][ T374] >ffff88812199d100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.465482][ T374] ^ [ 28.472199][ T374] ffff88812199d180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.480255][ T374] ffff88812199d200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 28.488334][ T374] ================================================================== [ 28.502071][ T374] Disabling lock debugging due to kernel taint