Warning: Permanently added '10.128.0.116' (ED25519) to the list of known hosts. 2026/06/11 05:04:46 parsed 1 programs [ 24.741570][ T28] audit: type=1400 audit(1781154286.280:64): 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 [ 24.762685][ T28] audit: type=1400 audit(1781154286.280:65): 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 [ 25.534558][ T28] audit: type=1400 audit(1781154287.080:66): 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 [ 25.535538][ T301] cgroup: Unknown subsys name 'net' [ 25.557244][ T28] audit: type=1400 audit(1781154287.080:67): 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 [ 25.584495][ T28] audit: type=1400 audit(1781154287.110:68): 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 [ 25.584628][ T301] cgroup: Unknown subsys name 'devices' [ 25.726153][ T301] cgroup: Unknown subsys name 'hugetlb' [ 25.731782][ T301] cgroup: Unknown subsys name 'rlimit' [ 25.840103][ T28] audit: type=1400 audit(1781154287.380:69): 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 [ 25.863817][ T28] audit: type=1400 audit(1781154287.380:70): 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 [ 25.872594][ T305] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). [ 25.884466][ T28] audit: type=1400 audit(1781154287.380:71): 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 [ 25.913020][ T28] audit: type=1400 audit(1781154287.380:72): 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 [ 25.933437][ T28] audit: type=1400 audit(1781154287.380:73): 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 [ 25.966346][ T301] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 26.748761][ T307] request_module fs-gadgetfs succeeded, but still no fs? [ 27.018354][ T325] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.025860][ T325] bridge0: port 1(bridge_slave_0) entered disabled state [ 27.033270][ T325] device bridge_slave_0 entered promiscuous mode [ 27.040383][ T325] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.047630][ T325] bridge0: port 2(bridge_slave_1) entered disabled state [ 27.055114][ T325] device bridge_slave_1 entered promiscuous mode [ 27.093072][ T325] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.100169][ T325] bridge0: port 2(bridge_slave_1) entered forwarding state [ 27.107485][ T325] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.114529][ T325] bridge0: port 1(bridge_slave_0) entered forwarding state [ 27.132380][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 27.139965][ T8] bridge0: port 1(bridge_slave_0) entered disabled state [ 27.147298][ T8] bridge0: port 2(bridge_slave_1) entered disabled state [ 27.156776][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 27.165078][ T8] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.172101][ T8] bridge0: port 1(bridge_slave_0) entered forwarding state [ 27.181692][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 27.190041][ T8] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.197105][ T8] bridge0: port 2(bridge_slave_1) entered forwarding state [ 27.208900][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 27.218252][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 27.231721][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 27.244022][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 27.252312][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 27.260173][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 27.269770][ T325] device veth0_vlan entered promiscuous mode [ 27.280284][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 27.289581][ T325] device veth1_macvtap entered promiscuous mode [ 27.299016][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 27.309426][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 27.340416][ T325] syz-executor (325) used greatest stack depth: 21152 bytes left 2026/06/11 05:04:49 executed programs: 0 [ 27.862466][ T367] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.869893][ T367] bridge0: port 1(bridge_slave_0) entered disabled state [ 27.877451][ T367] device bridge_slave_0 entered promiscuous mode [ 27.884455][ T367] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.891490][ T367] bridge0: port 2(bridge_slave_1) entered disabled state [ 27.898938][ T367] device bridge_slave_1 entered promiscuous mode [ 27.936433][ T367] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.943485][ T367] bridge0: port 2(bridge_slave_1) entered forwarding state [ 27.950783][ T367] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.957825][ T367] bridge0: port 1(bridge_slave_0) entered forwarding state [ 27.979828][ T330] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 27.987428][ T330] bridge0: port 1(bridge_slave_0) entered disabled state [ 27.995031][ T330] bridge0: port 2(bridge_slave_1) entered disabled state [ 28.004596][ T330] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 28.012948][ T330] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 28.021894][ T330] bridge0: port 1(bridge_slave_0) entered blocking state [ 28.028964][ T330] bridge0: port 1(bridge_slave_0) entered forwarding state [ 28.037419][ T330] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 28.045805][ T330] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 28.053882][ T330] bridge0: port 2(bridge_slave_1) entered blocking state [ 28.060922][ T330] bridge0: port 2(bridge_slave_1) entered forwarding state [ 28.073721][ T330] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 28.081942][ T330] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 28.090922][ T330] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 28.099528][ T330] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 28.116087][ T330] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 28.124540][ T330] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 28.135687][ T330] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 28.143649][ T330] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 28.152034][ T330] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 28.159628][ T330] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 28.167691][ T367] device veth0_vlan entered promiscuous mode [ 28.181696][ T330] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 28.189916][ T330] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 28.199139][ T367] device veth1_macvtap entered promiscuous mode [ 28.208265][ T330] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 28.215897][ T330] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 28.224025][ T330] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 28.239161][ T330] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 28.247411][ T330] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 28.271838][ T371] ================================================================== [ 28.279939][ T371] BUG: KASAN: use-after-free in mutex_lock+0x86/0x1b0 [ 28.286735][ T371] Write of size 8 at addr ffff88812d9cd550 by task syz.2.17/371 [ 28.294467][ T371] [ 28.296807][ T371] CPU: 1 PID: 371 Comm: syz.2.17 Not tainted syzkaller #0 [ 28.303907][ T371] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 28.313965][ T371] Call Trace: [ 28.317247][ T371] [ 28.320170][ T371] __dump_stack+0x21/0x24 [ 28.324507][ T371] dump_stack_lvl+0x110/0x170 [ 28.329196][ T371] ? __cfi_dump_stack_lvl+0x8/0x8 [ 28.334210][ T371] ? mutex_lock+0x86/0x1b0 [ 28.338618][ T371] print_address_description+0x71/0x200 [ 28.344273][ T371] print_report+0x4a/0x60 [ 28.348725][ T371] kasan_report+0x122/0x150 [ 28.353251][ T371] ? mutex_lock+0x86/0x1b0 [ 28.357668][ T371] kasan_check_range+0x249/0x2a0 [ 28.362621][ T371] __kasan_check_write+0x14/0x20 [ 28.367579][ T371] mutex_lock+0x86/0x1b0 [ 28.371820][ T371] ? __cfi_mutex_lock+0x10/0x10 [ 28.376665][ T371] ? l2tp_session_put+0xaf/0x1a0 [ 28.381597][ T371] ? l2tp_session_delete+0x3f0/0x4e0 [ 28.386871][ T371] pppol2tp_release+0x194/0x2d0 [ 28.391716][ T371] sock_close+0xf1/0x290 [ 28.396029][ T371] ? __cfi_sock_close+0x10/0x10 [ 28.400920][ T371] __fput+0x1fc/0x8f0 [ 28.404943][ T371] ____fput+0x15/0x20 [ 28.408946][ T371] task_work_run+0x1e1/0x250 [ 28.413565][ T371] ? __cfi_task_work_run+0x10/0x10 [ 28.418690][ T371] ? __cfi___close_range+0x10/0x10 [ 28.423802][ T371] exit_to_user_mode_loop+0x9b/0xb0 [ 28.428995][ T371] exit_to_user_mode_prepare+0x87/0xd0 [ 28.434450][ T371] syscall_exit_to_user_mode+0x1a/0x30 [ 28.439905][ T371] do_syscall_64+0x58/0xa0 [ 28.444315][ T371] ? clear_bhb_loop+0x30/0x80 [ 28.449000][ T371] ? clear_bhb_loop+0x30/0x80 [ 28.453751][ T371] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 28.459650][ T371] RIP: 0033:0x7fd3d939ce59 [ 28.464053][ T371] 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 [ 28.483662][ T371] RSP: 002b:00007ffc35087898 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 [ 28.492095][ T371] RAX: 0000000000000000 RBX: 00007ffc35087980 RCX: 00007fd3d939ce59 [ 28.500094][ T371] RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 [ 28.508067][ T371] RBP: 0000000000006e56 R08: 0000000000000001 R09: 0000000000000000 [ 28.516069][ T371] R10: 0000001b32e20000 R11: 0000000000000246 R12: 0000000000000000 [ 28.524035][ T371] R13: 00007fd3d9615fac R14: 00007fd3d9615fa8 R15: 00007fd3d9615fa0 [ 28.532008][ T371] [ 28.535017][ T371] [ 28.537330][ T371] Allocated by task 371: [ 28.541652][ T371] kasan_set_track+0x4b/0x70 [ 28.546233][ T371] kasan_save_alloc_info+0x25/0x30 [ 28.551333][ T371] __kasan_kmalloc+0x95/0xb0 [ 28.555962][ T371] __kmalloc+0xb1/0x1e0 [ 28.560117][ T371] l2tp_session_create+0x38/0xbe0 [ 28.565136][ T371] pppol2tp_connect+0xbef/0x1620 [ 28.570082][ T371] __sys_connect+0x3da/0x460 [ 28.574660][ T371] __x64_sys_connect+0x7a/0x90 [ 28.579428][ T371] x64_sys_call+0x88d/0x9a0 [ 28.583917][ T371] do_syscall_64+0x4c/0xa0 [ 28.588321][ T371] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 28.594214][ T371] [ 28.596533][ T371] Freed by task 371: [ 28.600414][ T371] kasan_set_track+0x4b/0x70 [ 28.604998][ T371] kasan_save_free_info+0x31/0x50 [ 28.610014][ T371] ____kasan_slab_free+0x132/0x180 [ 28.615124][ T371] __kasan_slab_free+0x11/0x20 [ 28.619889][ T371] slab_free_freelist_hook+0xc2/0x190 [ 28.625253][ T371] __kmem_cache_free+0xb7/0x1b0 [ 28.630101][ T371] kfree+0x6f/0xf0 [ 28.633812][ T371] l2tp_session_put+0xaf/0x1a0 [ 28.638573][ T371] l2tp_session_delete+0x3f0/0x4e0 [ 28.643679][ T371] pppol2tp_release+0x185/0x2d0 [ 28.648528][ T371] sock_close+0xf1/0x290 [ 28.652781][ T371] __fput+0x1fc/0x8f0 [ 28.656777][ T371] ____fput+0x15/0x20 [ 28.660764][ T371] task_work_run+0x1e1/0x250 [ 28.665363][ T371] exit_to_user_mode_loop+0x9b/0xb0 [ 28.670582][ T371] exit_to_user_mode_prepare+0x87/0xd0 [ 28.676037][ T371] syscall_exit_to_user_mode+0x1a/0x30 [ 28.681488][ T371] do_syscall_64+0x58/0xa0 [ 28.685903][ T371] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 28.691804][ T371] [ 28.694121][ T371] The buggy address belongs to the object at ffff88812d9cd400 [ 28.694121][ T371] which belongs to the cache kmalloc-512 of size 512 [ 28.708165][ T371] The buggy address is located 336 bytes inside of [ 28.708165][ T371] 512-byte region [ffff88812d9cd400, ffff88812d9cd600) [ 28.721440][ T371] [ 28.723758][ T371] The buggy address belongs to the physical page: [ 28.730154][ T371] page:ffffea0004b67300 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x12d9cc [ 28.740389][ T371] head:ffffea0004b67300 order:2 compound_mapcount:0 compound_pincount:0 [ 28.748708][ T371] flags: 0x4000000000010200(slab|head|zone=1) [ 28.754778][ T371] raw: 4000000000010200 0000000000000000 dead000000000122 ffff888100042f00 [ 28.763357][ T371] raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000 [ 28.771931][ T371] page dumped because: kasan: bad access detected [ 28.778331][ T371] page_owner tracks the page as allocated [ 28.784041][ T371] 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 371, tgid 371 (syz.2.17), ts 28271273158, free_ts 27463885276 [ 28.806262][ T371] post_alloc_hook+0x1f5/0x210 [ 28.811058][ T371] prep_new_page+0x1c/0x110 [ 28.815560][ T371] get_page_from_freelist+0x2d12/0x2d80 [ 28.821130][ T371] __alloc_pages+0x1fa/0x610 [ 28.825722][ T371] alloc_slab_page+0x6e/0xf0 [ 28.830308][ T371] new_slab+0x98/0x3d0 [ 28.834370][ T371] ___slab_alloc+0x6bd/0xb20 [ 28.838973][ T371] __slab_alloc+0x5e/0xa0 [ 28.843322][ T371] __kmem_cache_alloc_node+0x203/0x2c0 [ 28.848903][ T371] __kmalloc+0xa1/0x1e0 [ 28.853074][ T371] l2tp_session_create+0x38/0xbe0 [ 28.858109][ T371] pppol2tp_connect+0xbef/0x1620 [ 28.863050][ T371] __sys_connect+0x3da/0x460 [ 28.867640][ T371] __x64_sys_connect+0x7a/0x90 [ 28.872409][ T371] x64_sys_call+0x88d/0x9a0 [ 28.876919][ T371] do_syscall_64+0x4c/0xa0 [ 28.881355][ T371] page last free stack trace: [ 28.886022][ T371] free_unref_page_prepare+0x7f8/0x800 [ 28.891579][ T371] free_unref_page+0x95/0x540 [ 28.896266][ T371] __free_pages+0x67/0x100 [ 28.900684][ T371] __vunmap+0x9c0/0xb80 [ 28.904844][ T371] vfree+0x61/0x90 [ 28.908582][ T371] kcov_close+0x2b/0x50 [ 28.912776][ T371] __fput+0x1fc/0x8f0 [ 28.916757][ T371] ____fput+0x15/0x20 [ 28.920740][ T371] task_work_run+0x1e1/0x250 [ 28.925329][ T371] do_exit+0xa35/0x2660 [ 28.929486][ T371] do_group_exit+0x225/0x2e0 [ 28.934078][ T371] get_signal+0x13b5/0x1520 [ 28.938585][ T371] arch_do_signal_or_restart+0xd1/0x1140 [ 28.944218][ T371] exit_to_user_mode_loop+0x7a/0xb0 [ 28.949504][ T371] exit_to_user_mode_prepare+0x87/0xd0 [ 28.954964][ T371] syscall_exit_to_user_mode+0x1a/0x30 [ 28.960428][ T371] [ 28.962830][ T371] Memory state around the buggy address: [ 28.968467][ T371] ffff88812d9cd400: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.976538][ T371] ffff88812d9cd480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.984600][ T371] >ffff88812d9cd500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.992664][ T371] ^ [ 28.999346][ T371] ffff88812d9cd580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 29.007405][ T371] ffff88812d9cd600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 29.015456][ T371] ================================================================== [ 29.028055][ T371] Disabling lock debugging due to kernel taint