Warning: Permanently added '10.128.0.78' (ED25519) to the list of known hosts. 2026/08/04 11:28:52 parsed 1 programs 2026/08/04 11:28:52 serving rpc on tcp://37715 [ 24.226533][ T28] audit: type=1400 audit(1785842932.957:64): avc: denied { node_bind } for pid=294 comm="syz-execprog" saddr=::1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:node_t tclass=tcp_socket permissive=1 [ 24.248574][ T28] audit: type=1400 audit(1785842932.957:65): avc: denied { module_request } for pid=294 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 [ 25.476503][ T28] audit: type=1400 audit(1785842934.207:66): 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 [ 25.480064][ T300] cgroup: Unknown subsys name 'net' [ 25.499192][ T28] audit: type=1400 audit(1785842934.207:67): 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 [ 25.526541][ T28] audit: type=1400 audit(1785842934.237:68): 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 [ 25.527006][ T300] cgroup: Unknown subsys name 'devices' [ 25.666862][ T300] cgroup: Unknown subsys name 'hugetlb' [ 25.672521][ T300] cgroup: Unknown subsys name 'rlimit' [ 25.787981][ T28] audit: type=1400 audit(1785842934.517:69): avc: denied { setattr } for pid=300 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 [ 25.811311][ T28] audit: type=1400 audit(1785842934.517:70): 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 [ 25.831938][ T28] audit: type=1400 audit(1785842934.517:71): 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 [ 25.852380][ T28] audit: type=1400 audit(1785842934.517:72): 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 Setting up swapspace version 1, size = 127995904 bytes [ 25.873382][ T28] audit: type=1400 audit(1785842934.517:73): 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 [ 25.899257][ T305] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). [ 25.941609][ T300] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 26.622453][ T307] request_module fs-gadgetfs succeeded, but still no fs? [ 26.761121][ T316] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.768366][ T316] bridge0: port 1(bridge_slave_0) entered disabled state [ 26.776042][ T316] device bridge_slave_0 entered promiscuous mode [ 26.784307][ T316] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.791444][ T316] bridge0: port 2(bridge_slave_1) entered disabled state [ 26.798960][ T316] device bridge_slave_1 entered promiscuous mode [ 26.847501][ T316] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.854594][ T316] bridge0: port 2(bridge_slave_1) entered forwarding state [ 26.861963][ T316] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.869040][ T316] bridge0: port 1(bridge_slave_0) entered forwarding state [ 26.890115][ T10] bridge0: port 1(bridge_slave_0) entered disabled state [ 26.897619][ T10] bridge0: port 2(bridge_slave_1) entered disabled state [ 26.905500][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 26.912998][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 26.923068][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 26.931363][ T10] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.938660][ T10] bridge0: port 1(bridge_slave_0) entered forwarding state [ 26.947743][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 26.956260][ T10] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.963340][ T10] bridge0: port 2(bridge_slave_1) entered forwarding state [ 26.977737][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 26.987226][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 27.002409][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 27.014567][ T322] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 27.022885][ T322] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 27.030924][ T322] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 27.040692][ T316] device veth0_vlan entered promiscuous mode [ 27.051722][ T322] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 27.061129][ T316] device veth1_macvtap entered promiscuous mode [ 27.072123][ T322] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 27.082677][ T322] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 27.116030][ T316] syz-executor (316) used greatest stack depth: 21664 bytes left 2026/08/04 11:28:56 executed programs: 0 [ 27.866227][ T8] device bridge_slave_1 left promiscuous mode [ 27.872956][ T8] bridge0: port 2(bridge_slave_1) entered disabled state [ 27.880716][ T8] device bridge_slave_0 left promiscuous mode [ 27.887069][ T8] bridge0: port 1(bridge_slave_0) entered disabled state [ 27.895514][ T8] device veth1_macvtap left promiscuous mode [ 27.901822][ T8] device veth0_vlan left promiscuous mode [ 28.009659][ T368] bridge0: port 1(bridge_slave_0) entered blocking state [ 28.016818][ T368] bridge0: port 1(bridge_slave_0) entered disabled state [ 28.024264][ T368] device bridge_slave_0 entered promiscuous mode [ 28.031469][ T368] bridge0: port 2(bridge_slave_1) entered blocking state [ 28.038587][ T368] bridge0: port 2(bridge_slave_1) entered disabled state [ 28.046061][ T368] device bridge_slave_1 entered promiscuous mode [ 28.093075][ T368] bridge0: port 2(bridge_slave_1) entered blocking state [ 28.100151][ T368] bridge0: port 2(bridge_slave_1) entered forwarding state [ 28.107475][ T368] bridge0: port 1(bridge_slave_0) entered blocking state [ 28.114525][ T368] bridge0: port 1(bridge_slave_0) entered forwarding state [ 28.136144][ T322] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 28.143817][ T322] bridge0: port 1(bridge_slave_0) entered disabled state [ 28.151257][ T322] bridge0: port 2(bridge_slave_1) entered disabled state [ 28.160479][ T322] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 28.169552][ T322] bridge0: port 1(bridge_slave_0) entered blocking state [ 28.176651][ T322] bridge0: port 1(bridge_slave_0) entered forwarding state [ 28.188888][ T322] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 28.197546][ T322] bridge0: port 2(bridge_slave_1) entered blocking state [ 28.204604][ T322] bridge0: port 2(bridge_slave_1) entered forwarding state [ 28.217427][ T322] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 28.227852][ T322] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 28.242339][ T322] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 28.253873][ T322] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 28.262357][ T322] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 28.270267][ T322] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 28.278839][ T368] device veth0_vlan entered promiscuous mode [ 28.291648][ T322] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 28.301151][ T368] device veth1_macvtap entered promiscuous mode [ 28.311034][ T322] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 28.321432][ T322] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 28.348888][ T373] ================================================================== [ 28.357011][ T373] BUG: KASAN: use-after-free in mutex_lock+0x86/0x1b0 [ 28.363835][ T373] Write of size 8 at addr ffff888122e63550 by task syz.2.17/373 [ 28.371929][ T373] [ 28.374373][ T373] CPU: 0 PID: 373 Comm: syz.2.17 Not tainted syzkaller #0 [ 28.381602][ T373] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 28.391867][ T373] Call Trace: [ 28.395161][ T373] [ 28.398133][ T373] __dump_stack+0x21/0x24 [ 28.402564][ T373] dump_stack_lvl+0x110/0x170 [ 28.407264][ T373] ? __cfi_dump_stack_lvl+0x8/0x8 [ 28.412326][ T373] ? mutex_lock+0x86/0x1b0 [ 28.416770][ T373] print_address_description+0x71/0x200 [ 28.422348][ T373] print_report+0x4a/0x60 [ 28.426720][ T373] kasan_report+0x122/0x150 [ 28.431251][ T373] ? mutex_lock+0x86/0x1b0 [ 28.435769][ T373] kasan_check_range+0x249/0x2a0 [ 28.440724][ T373] __kasan_check_write+0x14/0x20 [ 28.445768][ T373] mutex_lock+0x86/0x1b0 [ 28.450055][ T373] ? __cfi_mutex_lock+0x10/0x10 [ 28.454940][ T373] ? kfree+0x6f/0xf0 [ 28.458882][ T373] ? l2tp_session_put+0xaf/0x1a0 [ 28.463848][ T373] ? l2tp_session_delete+0x3df/0x4d0 [ 28.469328][ T373] pppol2tp_release+0x178/0x2b0 [ 28.474207][ T373] sock_close+0xc9/0x220 [ 28.478478][ T373] ? __cfi_sock_close+0x10/0x10 [ 28.483375][ T373] __fput+0x1fd/0x8f0 [ 28.487403][ T373] ____fput+0x15/0x20 [ 28.491404][ T373] task_work_run+0x1e1/0x250 [ 28.496008][ T373] ? __cfi_task_work_run+0x10/0x10 [ 28.501150][ T373] ? __cfi___close_range+0x10/0x10 [ 28.506313][ T373] exit_to_user_mode_loop+0x9b/0xb0 [ 28.511538][ T373] exit_to_user_mode_prepare+0x87/0xd0 [ 28.517116][ T373] syscall_exit_to_user_mode+0x1a/0x30 [ 28.522619][ T373] do_syscall_64+0x58/0xa0 [ 28.527087][ T373] ? clear_bhb_loop+0x30/0x80 [ 28.531790][ T373] ? clear_bhb_loop+0x30/0x80 [ 28.536473][ T373] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 28.542383][ T373] RIP: 0033:0x7ffb3f39e019 [ 28.546809][ T373] 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 [ 28.566443][ T373] RSP: 002b:00007fffea98a868 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 [ 28.574909][ T373] RAX: 0000000000000000 RBX: 00007fffea98a950 RCX: 00007ffb3f39e019 [ 28.582900][ T373] RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 [ 28.590890][ T373] RBP: 0000000000006e98 R08: 0000000000000001 R09: 0000000000000000 [ 28.598889][ T373] R10: 0000001b32f20000 R11: 0000000000000246 R12: 0000000000000000 [ 28.606880][ T373] R13: 00007ffb3f625fac R14: 00007ffb3f625fa8 R15: 00007ffb3f625fa0 [ 28.614874][ T373] [ 28.617940][ T373] [ 28.620275][ T373] Allocated by task 373: [ 28.624548][ T373] kasan_set_track+0x4b/0x70 [ 28.629248][ T373] kasan_save_alloc_info+0x1f/0x30 [ 28.634375][ T373] __kasan_kmalloc+0x95/0xb0 [ 28.638984][ T373] __kmalloc+0xb4/0x1e0 [ 28.643178][ T373] l2tp_session_create+0x38/0xbd0 [ 28.648218][ T373] pppol2tp_connect+0xbf5/0x1640 [ 28.653198][ T373] __sys_connect+0x3da/0x460 [ 28.657816][ T373] __x64_sys_connect+0x7a/0x90 [ 28.662617][ T373] x64_sys_call+0x88d/0x9a0 [ 28.667167][ T373] do_syscall_64+0x4c/0xa0 [ 28.671623][ T373] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 28.677570][ T373] [ 28.679918][ T373] Freed by task 373: [ 28.683832][ T373] kasan_set_track+0x4b/0x70 [ 28.688457][ T373] kasan_save_free_info+0x2b/0x40 [ 28.693504][ T373] ____kasan_slab_free+0x132/0x180 [ 28.698669][ T373] __kasan_slab_free+0x11/0x20 [ 28.703454][ T373] slab_free_freelist_hook+0xc2/0x190 [ 28.708841][ T373] __kmem_cache_free+0xb7/0x1b0 [ 28.713752][ T373] kfree+0x6f/0xf0 [ 28.717498][ T373] l2tp_session_put+0xaf/0x1a0 [ 28.722283][ T373] l2tp_session_delete+0x3df/0x4d0 [ 28.727435][ T373] pppol2tp_release+0x169/0x2b0 [ 28.732491][ T373] sock_close+0xc9/0x220 [ 28.736778][ T373] __fput+0x1fd/0x8f0 [ 28.740790][ T373] ____fput+0x15/0x20 [ 28.744803][ T373] task_work_run+0x1e1/0x250 [ 28.749460][ T373] exit_to_user_mode_loop+0x9b/0xb0 [ 28.754713][ T373] exit_to_user_mode_prepare+0x87/0xd0 [ 28.760195][ T373] syscall_exit_to_user_mode+0x1a/0x30 [ 28.765671][ T373] do_syscall_64+0x58/0xa0 [ 28.770106][ T373] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 28.776045][ T373] [ 28.778384][ T373] The buggy address belongs to the object at ffff888122e63400 [ 28.778384][ T373] which belongs to the cache kmalloc-512 of size 512 [ 28.792472][ T373] The buggy address is located 336 bytes inside of [ 28.792472][ T373] 512-byte region [ffff888122e63400, ffff888122e63600) [ 28.806132][ T373] [ 28.808490][ T373] The buggy address belongs to the physical page: [ 28.814938][ T373] page:ffffea00048b9800 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x122e60 [ 28.825305][ T373] head:ffffea00048b9800 order:2 compound_mapcount:0 compound_pincount:0 [ 28.833645][ T373] flags: 0x4000000000010200(slab|head|zone=1) [ 28.839773][ T373] raw: 4000000000010200 0000000000000000 dead000000000122 ffff888100042f00 [ 28.848390][ T373] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 [ 28.857006][ T373] page dumped because: kasan: bad access detected [ 28.863448][ T373] page_owner tracks the page as allocated [ 28.869200][ T373] 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, tgid 368 (syz-executor), ts 28339952927, free_ts 27622218315 [ 28.892152][ T373] post_alloc_hook+0x1f5/0x210 [ 28.896963][ T373] prep_new_page+0x1c/0x110 [ 28.901501][ T373] get_page_from_freelist+0x2ca9/0x2d20 [ 28.907084][ T373] __alloc_pages+0x1fa/0x610 [ 28.911718][ T373] alloc_slab_page+0x6e/0xf0 [ 28.916414][ T373] new_slab+0x98/0x3e0 [ 28.920507][ T373] ___slab_alloc+0x70f/0xb70 [ 28.925304][ T373] __slab_alloc+0x5e/0xa0 [ 28.929686][ T373] __kmem_cache_alloc_node+0x204/0x2d0 [ 28.935177][ T373] kmalloc_node_trace+0x26/0xb0 [ 28.940056][ T373] alloc_fair_sched_group+0x218/0x6f0 [ 28.945475][ T373] sched_create_group+0x42/0x230 [ 28.950435][ T373] cpu_cgroup_css_alloc+0x18/0x1c0 [ 28.955571][ T373] cgroup_apply_control_enable+0x38d/0xdd0 [ 28.961492][ T373] cgroup_mkdir+0x12f6/0x1550 [ 28.966196][ T373] kernfs_iop_mkdir+0x1b1/0x2b0 [ 28.971159][ T373] page last free stack trace: [ 28.975869][ T373] free_unref_page_prepare+0x80c/0x820 [ 28.981360][ T373] free_unref_page+0x93/0x530 [ 28.986063][ T373] __free_pages+0x67/0x100 [ 28.990515][ T373] __vunmap+0xa3c/0xc00 [ 28.994686][ T373] vfree+0x61/0x90 [ 28.998435][ T373] kcov_close+0x2b/0x50 [ 29.002604][ T373] __fput+0x1fd/0x8f0 [ 29.006609][ T373] ____fput+0x15/0x20 [ 29.010611][ T373] task_work_run+0x1e1/0x250 [ 29.015218][ T373] do_exit+0xaf2/0x2850 [ 29.019414][ T373] do_group_exit+0x21b/0x2e0 [ 29.024025][ T373] get_signal+0x167c/0x1700 [ 29.028572][ T373] arch_do_signal_or_restart+0xd1/0x11c0 [ 29.034220][ T373] exit_to_user_mode_loop+0x7a/0xb0 [ 29.039433][ T373] exit_to_user_mode_prepare+0x87/0xd0 [ 29.044905][ T373] syscall_exit_to_user_mode+0x1a/0x30 [ 29.050375][ T373] [ 29.052704][ T373] Memory state around the buggy address: [ 29.058379][ T373] ffff888122e63400: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 29.066450][ T373] ffff888122e63480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 29.074523][ T373] >ffff888122e63500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 29.082596][ T373] ^ [ 29.089279][ T373] ffff888122e63580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 29.097868][ T373] ffff888122e63600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 29.106523][ T373] ================================================================== [ 29.119550][ T373] Disabling lock debugging due to kernel taint