Warning: Permanently added '10.128.0.131' (ED25519) to the list of known hosts. 2026/06/11 05:57:31 parsed 1 programs [ 21.236474][ T28] audit: type=1400 audit(1781157451.032:64): 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 [ 21.239518][ T28] audit: type=1400 audit(1781157451.032:65): 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 [ 21.931696][ T28] audit: type=1400 audit(1781157451.732:66): avc: denied { mounton } for pid=303 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 [ 21.932751][ T303] cgroup: Unknown subsys name 'net' [ 21.954406][ T28] audit: type=1400 audit(1781157451.732:67): avc: denied { mount } for pid=303 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 [ 21.981855][ T28] audit: type=1400 audit(1781157451.762:68): avc: denied { unmount } for pid=303 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1 [ 21.982002][ T303] cgroup: Unknown subsys name 'devices' [ 22.139590][ T303] cgroup: Unknown subsys name 'hugetlb' [ 22.145180][ T303] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 22.282848][ T28] audit: type=1400 audit(1781157452.082:69): avc: denied { setattr } for pid=303 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 [ 22.301405][ T306] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). [ 22.306043][ T28] audit: type=1400 audit(1781157452.082:70): avc: denied { create } for pid=303 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 22.331237][ T303] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 22.334901][ T28] audit: type=1400 audit(1781157452.082:71): avc: denied { write } for pid=303 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 22.363781][ T28] audit: type=1400 audit(1781157452.082:72): avc: denied { read } for pid=303 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 22.384019][ T28] audit: type=1400 audit(1781157452.082:73): avc: denied { mounton } for pid=303 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 [ 23.001043][ T308] request_module fs-gadgetfs succeeded, but still no fs? [ 23.108356][ T313] syz-executor (313) used greatest stack depth: 22304 bytes left [ 23.310903][ T329] bridge0: port 1(bridge_slave_0) entered blocking state [ 23.317974][ T329] bridge0: port 1(bridge_slave_0) entered disabled state [ 23.325295][ T329] device bridge_slave_0 entered promiscuous mode [ 23.332181][ T329] bridge0: port 2(bridge_slave_1) entered blocking state [ 23.339295][ T329] bridge0: port 2(bridge_slave_1) entered disabled state [ 23.346571][ T329] device bridge_slave_1 entered promiscuous mode [ 23.383714][ T329] bridge0: port 2(bridge_slave_1) entered blocking state [ 23.390767][ T329] bridge0: port 2(bridge_slave_1) entered forwarding state [ 23.398062][ T329] bridge0: port 1(bridge_slave_0) entered blocking state [ 23.405073][ T329] bridge0: port 1(bridge_slave_0) entered forwarding state [ 23.421748][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 23.429334][ T317] bridge0: port 1(bridge_slave_0) entered disabled state [ 23.436509][ T317] bridge0: port 2(bridge_slave_1) entered disabled state [ 23.446140][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 23.454385][ T317] bridge0: port 1(bridge_slave_0) entered blocking state [ 23.461432][ T317] bridge0: port 1(bridge_slave_0) entered forwarding state [ 23.470118][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 23.478393][ T317] bridge0: port 2(bridge_slave_1) entered blocking state [ 23.485400][ T317] bridge0: port 2(bridge_slave_1) entered forwarding state [ 23.497130][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 23.506186][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 23.519601][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 23.532251][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 23.540271][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 23.547586][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 23.555258][ T329] device veth0_vlan entered promiscuous mode [ 23.564431][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 23.573378][ T329] device veth1_macvtap entered promiscuous mode [ 23.582173][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 23.591927][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 23.619689][ T329] syz-executor (329) used greatest stack depth: 21920 bytes left 2026/06/11 05:57:33 executed programs: 0 [ 24.106415][ T372] bridge0: port 1(bridge_slave_0) entered blocking state [ 24.113497][ T372] bridge0: port 1(bridge_slave_0) entered disabled state [ 24.121126][ T372] device bridge_slave_0 entered promiscuous mode [ 24.128366][ T372] bridge0: port 2(bridge_slave_1) entered blocking state [ 24.135394][ T372] bridge0: port 2(bridge_slave_1) entered disabled state [ 24.142745][ T372] device bridge_slave_1 entered promiscuous mode [ 24.184839][ T372] bridge0: port 2(bridge_slave_1) entered blocking state [ 24.191892][ T372] bridge0: port 2(bridge_slave_1) entered forwarding state [ 24.199137][ T372] bridge0: port 1(bridge_slave_0) entered blocking state [ 24.206145][ T372] bridge0: port 1(bridge_slave_0) entered forwarding state [ 24.224270][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 24.232022][ T10] bridge0: port 1(bridge_slave_0) entered disabled state [ 24.239533][ T10] bridge0: port 2(bridge_slave_1) entered disabled state [ 24.251040][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 24.259171][ T10] bridge0: port 1(bridge_slave_0) entered blocking state [ 24.266170][ T10] bridge0: port 1(bridge_slave_0) entered forwarding state [ 24.274440][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 24.282904][ T10] bridge0: port 2(bridge_slave_1) entered blocking state [ 24.289968][ T10] bridge0: port 2(bridge_slave_1) entered forwarding state [ 24.301412][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 24.310271][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 24.323035][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 24.333683][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 24.342089][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 24.349731][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 24.358081][ T372] device veth0_vlan entered promiscuous mode [ 24.367609][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 24.376677][ T372] device veth1_macvtap entered promiscuous mode [ 24.385592][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 24.395328][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 24.417438][ T377] ================================================================== [ 24.425511][ T377] BUG: KASAN: use-after-free in mutex_lock+0x86/0x1b0 [ 24.432268][ T377] Write of size 8 at addr ffff88812db6b150 by task syz.2.17/377 [ 24.439870][ T377] [ 24.442177][ T377] CPU: 1 PID: 377 Comm: syz.2.17 Not tainted syzkaller #0 [ 24.449256][ T377] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 24.459299][ T377] Call Trace: [ 24.462559][ T377] [ 24.465469][ T377] __dump_stack+0x21/0x24 [ 24.469789][ T377] dump_stack_lvl+0x110/0x170 [ 24.474460][ T377] ? __cfi_dump_stack_lvl+0x8/0x8 [ 24.479498][ T377] ? mutex_lock+0x86/0x1b0 [ 24.483913][ T377] print_address_description+0x71/0x200 [ 24.489436][ T377] print_report+0x4a/0x60 [ 24.493741][ T377] kasan_report+0x122/0x150 [ 24.498220][ T377] ? mutex_lock+0x86/0x1b0 [ 24.502620][ T377] kasan_check_range+0x249/0x2a0 [ 24.507531][ T377] __kasan_check_write+0x14/0x20 [ 24.512441][ T377] mutex_lock+0x86/0x1b0 [ 24.516664][ T377] ? __cfi_mutex_lock+0x10/0x10 [ 24.521495][ T377] ? l2tp_session_put+0xaf/0x1a0 [ 24.526422][ T377] ? l2tp_session_delete+0x3f0/0x4e0 [ 24.531681][ T377] pppol2tp_release+0x194/0x2d0 [ 24.536508][ T377] sock_close+0xf1/0x290 [ 24.540729][ T377] ? __cfi_sock_close+0x10/0x10 [ 24.545556][ T377] __fput+0x1fc/0x8f0 [ 24.549514][ T377] ____fput+0x15/0x20 [ 24.553470][ T377] task_work_run+0x1e1/0x250 [ 24.558036][ T377] ? __cfi_task_work_run+0x10/0x10 [ 24.563124][ T377] ? __cfi___close_range+0x10/0x10 [ 24.568217][ T377] exit_to_user_mode_loop+0x9b/0xb0 [ 24.573395][ T377] exit_to_user_mode_prepare+0x87/0xd0 [ 24.578831][ T377] syscall_exit_to_user_mode+0x1a/0x30 [ 24.584264][ T377] do_syscall_64+0x58/0xa0 [ 24.588656][ T377] ? clear_bhb_loop+0x30/0x80 [ 24.593309][ T377] ? clear_bhb_loop+0x30/0x80 [ 24.597960][ T377] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 24.603828][ T377] RIP: 0033:0x7f467979ce59 [ 24.608231][ T377] 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 [ 24.627817][ T377] RSP: 002b:00007ffd368db098 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 [ 24.636237][ T377] RAX: 0000000000000000 RBX: 00007ffd368db180 RCX: 00007f467979ce59 [ 24.644191][ T377] RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 [ 24.652136][ T377] RBP: 0000000000005f57 R08: 0000000000000001 R09: 0000000000000000 [ 24.660080][ T377] R10: 0000001b33320000 R11: 0000000000000246 R12: 0000000000000000 [ 24.668033][ T377] R13: 00007f4679a15fac R14: 00007f4679a15fa8 R15: 00007f4679a15fa0 [ 24.675996][ T377] [ 24.678995][ T377] [ 24.681294][ T377] Allocated by task 377: [ 24.685502][ T377] kasan_set_track+0x4b/0x70 [ 24.690076][ T377] kasan_save_alloc_info+0x25/0x30 [ 24.695167][ T377] __kasan_kmalloc+0x95/0xb0 [ 24.699731][ T377] __kmalloc+0xb1/0x1e0 [ 24.703870][ T377] l2tp_session_create+0x38/0xbe0 [ 24.708891][ T377] pppol2tp_connect+0xbef/0x1620 [ 24.713824][ T377] __sys_connect+0x3da/0x460 [ 24.718389][ T377] __x64_sys_connect+0x7a/0x90 [ 24.723159][ T377] x64_sys_call+0x88d/0x9a0 [ 24.727634][ T377] do_syscall_64+0x4c/0xa0 [ 24.732023][ T377] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 24.737898][ T377] [ 24.740207][ T377] Freed by task 377: [ 24.744070][ T377] kasan_set_track+0x4b/0x70 [ 24.748654][ T377] kasan_save_free_info+0x31/0x50 [ 24.753648][ T377] ____kasan_slab_free+0x132/0x180 [ 24.758730][ T377] __kasan_slab_free+0x11/0x20 [ 24.763465][ T377] slab_free_freelist_hook+0xc2/0x190 [ 24.768808][ T377] __kmem_cache_free+0xb7/0x1b0 [ 24.773636][ T377] kfree+0x6f/0xf0 [ 24.777333][ T377] l2tp_session_put+0xaf/0x1a0 [ 24.782069][ T377] l2tp_session_delete+0x3f0/0x4e0 [ 24.787176][ T377] pppol2tp_release+0x185/0x2d0 [ 24.791998][ T377] sock_close+0xf1/0x290 [ 24.796215][ T377] __fput+0x1fc/0x8f0 [ 24.800174][ T377] ____fput+0x15/0x20 [ 24.804129][ T377] task_work_run+0x1e1/0x250 [ 24.808690][ T377] exit_to_user_mode_loop+0x9b/0xb0 [ 24.813861][ T377] exit_to_user_mode_prepare+0x87/0xd0 [ 24.819293][ T377] syscall_exit_to_user_mode+0x1a/0x30 [ 24.824729][ T377] do_syscall_64+0x58/0xa0 [ 24.829119][ T377] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 24.834987][ T377] [ 24.837286][ T377] The buggy address belongs to the object at ffff88812db6b000 [ 24.837286][ T377] which belongs to the cache kmalloc-512 of size 512 [ 24.851309][ T377] The buggy address is located 336 bytes inside of [ 24.851309][ T377] 512-byte region [ffff88812db6b000, ffff88812db6b200) [ 24.864552][ T377] [ 24.866850][ T377] The buggy address belongs to the physical page: [ 24.873244][ T377] page:ffffea0004b6da00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x12db68 [ 24.883459][ T377] head:ffffea0004b6da00 order:2 compound_mapcount:0 compound_pincount:0 [ 24.891752][ T377] flags: 0x4000000000010200(slab|head|zone=1) [ 24.897802][ T377] raw: 4000000000010200 0000000000000000 dead000000000122 ffff888100042f00 [ 24.906357][ T377] raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000 [ 24.914910][ T377] page dumped because: kasan: bad access detected [ 24.921307][ T377] page_owner tracks the page as allocated [ 24.926995][ T377] 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 10, tgid 10 (kworker/u4:1), ts 24403598690, free_ts 23894016701 [ 24.949363][ T377] post_alloc_hook+0x1f5/0x210 [ 24.954110][ T377] prep_new_page+0x1c/0x110 [ 24.958587][ T377] get_page_from_freelist+0x2d12/0x2d80 [ 24.964110][ T377] __alloc_pages+0x1fa/0x610 [ 24.968674][ T377] alloc_slab_page+0x6e/0xf0 [ 24.973237][ T377] new_slab+0x98/0x3d0 [ 24.977283][ T377] ___slab_alloc+0x6bd/0xb20 [ 24.981849][ T377] __slab_alloc+0x5e/0xa0 [ 24.986155][ T377] __kmem_cache_alloc_node+0x203/0x2c0 [ 24.991590][ T377] __kmalloc+0xa1/0x1e0 [ 24.995719][ T377] fib6_info_alloc+0x34/0xe0 [ 25.000281][ T377] ip6_route_info_create+0x526/0x1510 [ 25.005630][ T377] ip6_route_add+0x27/0x130 [ 25.010112][ T377] addrconf_add_dev+0x388/0x4a0 [ 25.014939][ T377] addrconf_init_auto_addrs+0x79a/0xb80 [ 25.020458][ T377] addrconf_notify+0x803/0xe40 [ 25.025205][ T377] page last free stack trace: [ 25.029850][ T377] free_unref_page_prepare+0x7f8/0x800 [ 25.035286][ T377] free_unref_page+0x95/0x540 [ 25.039936][ T377] __free_pages+0x67/0x100 [ 25.044330][ T377] __vunmap+0x9c0/0xb80 [ 25.048461][ T377] vfree+0x61/0x90 [ 25.052155][ T377] kcov_close+0x2b/0x50 [ 25.056281][ T377] __fput+0x1fc/0x8f0 [ 25.060235][ T377] ____fput+0x15/0x20 [ 25.064192][ T377] task_work_run+0x1e1/0x250 [ 25.068755][ T377] do_exit+0xa35/0x2660 [ 25.072887][ T377] do_group_exit+0x225/0x2e0 [ 25.077449][ T377] get_signal+0x13b5/0x1520 [ 25.081928][ T377] arch_do_signal_or_restart+0xd1/0x1140 [ 25.087535][ T377] exit_to_user_mode_loop+0x7a/0xb0 [ 25.092791][ T377] exit_to_user_mode_prepare+0x87/0xd0 [ 25.098223][ T377] syscall_exit_to_user_mode+0x1a/0x30 [ 25.103653][ T377] [ 25.105950][ T377] Memory state around the buggy address: [ 25.111550][ T377] ffff88812db6b000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 25.119582][ T377] ffff88812db6b080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 25.127615][ T377] >ffff88812db6b100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 25.135644][ T377] ^ [ 25.142298][ T377] ffff88812db6b180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 25.150348][ T377] ffff88812db6b200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 25.158385][ T377] ================================================================== [ 25.171300][ T377] Disabling lock debugging due to kernel taint