Warning: Permanently added '10.128.0.55' (ED25519) to the list of known hosts. 2026/06/11 11:39:17 parsed 1 programs [ 24.642418][ T28] audit: type=1400 audit(1781177957.944:64): 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 [ 24.663183][ T28] audit: type=1400 audit(1781177957.944:65): 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 [ 25.372051][ T28] audit: type=1400 audit(1781177958.674:66): 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 [ 25.373087][ T301] cgroup: Unknown subsys name 'net' [ 25.399995][ T28] audit: type=1400 audit(1781177958.674:67): 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 [ 25.422136][ T28] audit: type=1400 audit(1781177958.694:68): 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 [ 25.422327][ T301] cgroup: Unknown subsys name 'devices' [ 25.562927][ T301] cgroup: Unknown subsys name 'hugetlb' [ 25.568566][ T301] cgroup: Unknown subsys name 'rlimit' [ 25.685898][ T28] audit: type=1400 audit(1781177958.984:69): 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 [ 25.709103][ T28] audit: type=1400 audit(1781177958.984:70): 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 [ 25.729508][ T28] audit: type=1400 audit(1781177958.984:71): 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 [ 25.738703][ T305] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). [ 25.749873][ T28] audit: type=1400 audit(1781177958.984:72): 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 [ 25.778533][ T28] audit: type=1400 audit(1781177958.984:73): 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 [ 25.833469][ T301] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 26.470618][ T308] request_module fs-gadgetfs succeeded, but still no fs? [ 27.083023][ T356] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.090091][ T356] bridge0: port 1(bridge_slave_0) entered disabled state [ 27.098054][ T356] device bridge_slave_0 entered promiscuous mode [ 27.104957][ T356] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.112750][ T356] bridge0: port 2(bridge_slave_1) entered disabled state [ 27.120040][ T356] device bridge_slave_1 entered promiscuous mode [ 27.155423][ T356] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.162526][ T356] bridge0: port 2(bridge_slave_1) entered forwarding state [ 27.169805][ T356] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.176854][ T356] bridge0: port 1(bridge_slave_0) entered forwarding state [ 27.193763][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 27.201397][ T8] bridge0: port 1(bridge_slave_0) entered disabled state [ 27.208529][ T8] bridge0: port 2(bridge_slave_1) entered disabled state [ 27.217464][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 27.225796][ T8] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.232854][ T8] bridge0: port 1(bridge_slave_0) entered forwarding state [ 27.242297][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 27.250476][ T8] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.257513][ T8] bridge0: port 2(bridge_slave_1) entered forwarding state [ 27.268801][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 27.278086][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 27.290683][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 27.301460][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 27.309498][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 27.317262][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 27.325453][ T356] device veth0_vlan entered promiscuous mode [ 27.335474][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 27.344531][ T356] device veth1_macvtap entered promiscuous mode [ 27.353546][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 27.363293][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 27.394692][ T356] syz-executor (356) used greatest stack depth: 21952 bytes left 2026/06/11 11:39:20 executed programs: 0 [ 27.634585][ T370] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.642203][ T370] bridge0: port 1(bridge_slave_0) entered disabled state [ 27.649627][ T370] device bridge_slave_0 entered promiscuous mode [ 27.656992][ T370] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.664169][ T370] bridge0: port 2(bridge_slave_1) entered disabled state [ 27.671585][ T370] device bridge_slave_1 entered promiscuous mode [ 27.711780][ T370] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.718823][ T370] bridge0: port 2(bridge_slave_1) entered forwarding state [ 27.726094][ T370] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.733122][ T370] bridge0: port 1(bridge_slave_0) entered forwarding state [ 27.758124][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 27.765685][ T10] bridge0: port 1(bridge_slave_0) entered disabled state [ 27.772952][ T10] bridge0: port 2(bridge_slave_1) entered disabled state [ 27.782276][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 27.790479][ T10] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.797526][ T10] bridge0: port 1(bridge_slave_0) entered forwarding state [ 27.813472][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 27.821629][ T10] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.828637][ T10] bridge0: port 2(bridge_slave_1) entered forwarding state [ 27.839585][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 27.848028][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 27.857066][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 27.865259][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 27.883080][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 27.891538][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 27.902345][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 27.910263][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 27.918379][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 27.925887][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 27.934634][ T370] device veth0_vlan entered promiscuous mode [ 27.950600][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 27.958971][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 27.967986][ T370] device veth1_macvtap entered promiscuous mode [ 27.976952][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 27.984738][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 27.993119][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 28.008701][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 28.017223][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 28.037975][ T375] ================================================================== [ 28.046065][ T375] BUG: KASAN: use-after-free in mutex_lock+0x86/0x1b0 [ 28.052830][ T375] Write of size 8 at addr ffff88810d562150 by task syz.2.17/375 [ 28.060435][ T375] [ 28.062748][ T375] CPU: 0 PID: 375 Comm: syz.2.17 Not tainted syzkaller #0 [ 28.069835][ T375] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 28.079907][ T375] Call Trace: [ 28.083172][ T375] [ 28.086088][ T375] __dump_stack+0x21/0x24 [ 28.090400][ T375] dump_stack_lvl+0x110/0x170 [ 28.095060][ T375] ? __cfi_dump_stack_lvl+0x8/0x8 [ 28.100073][ T375] ? mutex_lock+0x86/0x1b0 [ 28.104486][ T375] print_address_description+0x71/0x200 [ 28.110054][ T375] print_report+0x4a/0x60 [ 28.114372][ T375] kasan_report+0x122/0x150 [ 28.118859][ T375] ? mutex_lock+0x86/0x1b0 [ 28.123263][ T375] kasan_check_range+0x249/0x2a0 [ 28.128185][ T375] __kasan_check_write+0x14/0x20 [ 28.133111][ T375] mutex_lock+0x86/0x1b0 [ 28.137344][ T375] ? __cfi_mutex_lock+0x10/0x10 [ 28.142176][ T375] ? l2tp_session_put+0xaf/0x1a0 [ 28.147091][ T375] ? l2tp_session_delete+0x3f0/0x4e0 [ 28.152357][ T375] pppol2tp_release+0x194/0x2d0 [ 28.157183][ T375] sock_close+0xf1/0x290 [ 28.161469][ T375] ? __cfi_sock_close+0x10/0x10 [ 28.166303][ T375] __fput+0x1fc/0x8f0 [ 28.170270][ T375] ____fput+0x15/0x20 [ 28.174229][ T375] task_work_run+0x1e1/0x250 [ 28.178802][ T375] ? __cfi_task_work_run+0x10/0x10 [ 28.183895][ T375] ? __cfi___close_range+0x10/0x10 [ 28.188988][ T375] exit_to_user_mode_loop+0x9b/0xb0 [ 28.194164][ T375] exit_to_user_mode_prepare+0x87/0xd0 [ 28.199599][ T375] syscall_exit_to_user_mode+0x1a/0x30 [ 28.205033][ T375] do_syscall_64+0x58/0xa0 [ 28.209426][ T375] ? clear_bhb_loop+0x30/0x80 [ 28.214076][ T375] ? clear_bhb_loop+0x30/0x80 [ 28.218728][ T375] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 28.224609][ T375] RIP: 0033:0x7fcd9799ce59 [ 28.229013][ T375] 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 [ 28.248602][ T375] RSP: 002b:00007ffee9375218 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 [ 28.257028][ T375] RAX: 0000000000000000 RBX: 00007ffee9375300 RCX: 00007fcd9799ce59 [ 28.264997][ T375] RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 [ 28.272973][ T375] RBP: 0000000000006d6f R08: 0000000000000001 R09: 0000000000000000 [ 28.280945][ T375] R10: 0000001b33120000 R11: 0000000000000246 R12: 0000000000000000 [ 28.288903][ T375] R13: 00007fcd97c15fac R14: 00007fcd97c15fa8 R15: 00007fcd97c15fa0 [ 28.296871][ T375] [ 28.299871][ T375] [ 28.302271][ T375] Allocated by task 375: [ 28.306490][ T375] kasan_set_track+0x4b/0x70 [ 28.311061][ T375] kasan_save_alloc_info+0x25/0x30 [ 28.316148][ T375] __kasan_kmalloc+0x95/0xb0 [ 28.320715][ T375] __kmalloc+0xb1/0x1e0 [ 28.324843][ T375] l2tp_session_create+0x38/0xbe0 [ 28.329841][ T375] pppol2tp_connect+0xbef/0x1620 [ 28.334769][ T375] __sys_connect+0x3da/0x460 [ 28.339345][ T375] __x64_sys_connect+0x7a/0x90 [ 28.344087][ T375] x64_sys_call+0x88d/0x9a0 [ 28.348576][ T375] do_syscall_64+0x4c/0xa0 [ 28.352982][ T375] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 28.358885][ T375] [ 28.361194][ T375] Freed by task 375: [ 28.365065][ T375] kasan_set_track+0x4b/0x70 [ 28.369635][ T375] kasan_save_free_info+0x31/0x50 [ 28.374636][ T375] ____kasan_slab_free+0x132/0x180 [ 28.379986][ T375] __kasan_slab_free+0x11/0x20 [ 28.384738][ T375] slab_free_freelist_hook+0xc2/0x190 [ 28.390097][ T375] __kmem_cache_free+0xb7/0x1b0 [ 28.394926][ T375] kfree+0x6f/0xf0 [ 28.398622][ T375] l2tp_session_put+0xaf/0x1a0 [ 28.403361][ T375] l2tp_session_delete+0x3f0/0x4e0 [ 28.408447][ T375] pppol2tp_release+0x185/0x2d0 [ 28.413277][ T375] sock_close+0xf1/0x290 [ 28.417530][ T375] __fput+0x1fc/0x8f0 [ 28.421498][ T375] ____fput+0x15/0x20 [ 28.425460][ T375] task_work_run+0x1e1/0x250 [ 28.430028][ T375] exit_to_user_mode_loop+0x9b/0xb0 [ 28.435202][ T375] exit_to_user_mode_prepare+0x87/0xd0 [ 28.440644][ T375] syscall_exit_to_user_mode+0x1a/0x30 [ 28.446083][ T375] do_syscall_64+0x58/0xa0 [ 28.450483][ T375] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 28.456352][ T375] [ 28.458653][ T375] The buggy address belongs to the object at ffff88810d562000 [ 28.458653][ T375] which belongs to the cache kmalloc-512 of size 512 [ 28.472681][ T375] The buggy address is located 336 bytes inside of [ 28.472681][ T375] 512-byte region [ffff88810d562000, ffff88810d562200) [ 28.485932][ T375] [ 28.488238][ T375] The buggy address belongs to the physical page: [ 28.494632][ T375] page:ffffea0004355800 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10d560 [ 28.504844][ T375] head:ffffea0004355800 order:2 compound_mapcount:0 compound_pincount:0 [ 28.513140][ T375] flags: 0x4000000000010200(slab|head|zone=1) [ 28.519192][ T375] raw: 4000000000010200 0000000000000000 dead000000000122 ffff888100042f00 [ 28.527842][ T375] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 [ 28.536419][ T375] page dumped because: kasan: bad access detected [ 28.542815][ T375] page_owner tracks the page as allocated [ 28.548501][ T375] page last allocated via order 2, migratetype Unmovable, gfp_mask 0x152a20(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_HARDWALL), pid 8, tgid 8 (kworker/u4:0), ts 28026971189, free_ts 27022853655 [ 28.568614][ T375] post_alloc_hook+0x1f5/0x210 [ 28.573361][ T375] prep_new_page+0x1c/0x110 [ 28.577848][ T375] get_page_from_freelist+0x2d12/0x2d80 [ 28.583458][ T375] __alloc_pages+0x1fa/0x610 [ 28.588035][ T375] alloc_slab_page+0x6e/0xf0 [ 28.592604][ T375] new_slab+0x98/0x3d0 [ 28.596653][ T375] ___slab_alloc+0x6bd/0xb20 [ 28.601222][ T375] __slab_alloc+0x5e/0xa0 [ 28.605530][ T375] __kmem_cache_alloc_node+0x203/0x2c0 [ 28.610964][ T375] __kmalloc+0xa1/0x1e0 [ 28.615110][ T375] ___neigh_create+0x6f6/0x1e20 [ 28.619938][ T375] __neigh_create+0x31/0x40 [ 28.624420][ T375] ip6_finish_output2+0xa56/0x18a0 [ 28.629547][ T375] ip6_finish_output+0x5f9/0xbb0 [ 28.634469][ T375] ip6_output+0x1fa/0x410 [ 28.638782][ T375] ip6_local_out+0x20f/0x3e0 [ 28.643370][ T375] page last free stack trace: [ 28.648017][ T375] free_unref_page_prepare+0x7f8/0x800 [ 28.653454][ T375] free_unref_page+0x95/0x540 [ 28.658109][ T375] __free_pages+0x67/0x100 [ 28.662505][ T375] __vunmap+0x9c0/0xb80 [ 28.666632][ T375] vfree+0x61/0x90 [ 28.670326][ T375] kcov_close+0x2b/0x50 [ 28.674457][ T375] __fput+0x1fc/0x8f0 [ 28.678419][ T375] ____fput+0x15/0x20 [ 28.682378][ T375] task_work_run+0x1e1/0x250 [ 28.686944][ T375] do_exit+0xa35/0x2660 [ 28.691074][ T375] do_group_exit+0x225/0x2e0 [ 28.695638][ T375] get_signal+0x13b5/0x1520 [ 28.700118][ T375] arch_do_signal_or_restart+0xd1/0x1140 [ 28.705734][ T375] exit_to_user_mode_loop+0x7a/0xb0 [ 28.710914][ T375] exit_to_user_mode_prepare+0x87/0xd0 [ 28.716348][ T375] syscall_exit_to_user_mode+0x1a/0x30 [ 28.721785][ T375] [ 28.724107][ T375] Memory state around the buggy address: [ 28.729711][ T375] ffff88810d562000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.737751][ T375] ffff88810d562080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.745798][ T375] >ffff88810d562100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.753842][ T375] ^ [ 28.760497][ T375] ffff88810d562180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.768541][ T375] ffff88810d562200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 28.776582][ T375] ================================================================== [ 28.785687][ T375] Disabling lock debugging due to kernel taint