DUID 00:04:06:88:74:a7:04:75:62:cb:55:93:34:09:94:90:e1:fe forked to background, child pid 3187 [ 23.713844][ T3188] 8021q: adding VLAN 0 to HW filter on device bond0 [ 23.725112][ T3188] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller syzkaller login: [ 76.199482][ T15] cfg80211: failed to load regulatory.db Warning: Permanently added '10.128.0.242' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 271.577722][ T6605] nfsd: failed to allocate reply cache [ 271.626331][ T4041] ================================================================== [ 271.634565][ T4041] BUG: KASAN: use-after-free in __list_del_entry_valid+0xe8/0x110 [ 271.642476][ T4041] Read of size 8 at addr ffff8880771f35d0 by task kworker/0:23/4041 [ 271.650457][ T4041] [ 271.652779][ T4041] CPU: 0 PID: 4041 Comm: kworker/0:23 Not tainted 6.0.0-rc6-next-20220923-syzkaller #0 [ 271.662501][ T4041] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 271.672559][ T4041] Workqueue: events free_ipc [ 271.677241][ T4041] Call Trace: [ 271.680531][ T4041] [ 271.683462][ T4041] dump_stack_lvl+0xcd/0x134 [ 271.688136][ T4041] print_report+0x15e/0x45d [ 271.692696][ T4041] ? __phys_addr+0xc4/0x140 [ 271.697218][ T4041] ? __list_del_entry_valid+0xe8/0x110 [ 271.702702][ T4041] kasan_report+0xbb/0x1f0 [ 271.707141][ T4041] ? __list_del_entry_valid+0xe8/0x110 [ 271.712617][ T4041] __list_del_entry_valid+0xe8/0x110 [ 271.717916][ T4041] unregister_shrinker+0x83/0x2f0 [ 271.722959][ T4041] deactivate_locked_super+0x6c/0x160 [ 271.728345][ T4041] deactivate_super+0xad/0xd0 [ 271.733027][ T4041] cleanup_mnt+0x2ae/0x3d0 [ 271.737450][ T4041] mntput_no_expire+0x7f8/0xb50 [ 271.742302][ T4041] ? lock_acquire+0x4fc/0x630 [ 271.746988][ T4041] ? mnt_get_count+0x1c0/0x1c0 [ 271.751752][ T4041] ? lock_release+0x810/0x810 [ 271.756432][ T4041] ? lock_downgrade+0x6e0/0x6e0 [ 271.761337][ T4041] ? finish_task_switch.isra.0+0x2b5/0xc80 [ 271.767168][ T4041] kern_unmount+0xb5/0xe0 [ 271.771523][ T4041] free_ipc+0xf0/0x210 [ 271.775608][ T4041] process_one_work+0x9bf/0x1710 [ 271.780560][ T4041] ? pwq_dec_nr_in_flight+0x2a0/0x2a0 [ 271.785945][ T4041] ? rwlock_bug.part.0+0x90/0x90 [ 271.790895][ T4041] worker_thread+0x665/0x1080 [ 271.795588][ T4041] ? process_one_work+0x1710/0x1710 [ 271.800799][ T4041] kthread+0x2e4/0x3a0 [ 271.804874][ T4041] ? kthread_complete_and_exit+0x40/0x40 [ 271.810516][ T4041] ret_from_fork+0x1f/0x30 [ 271.814950][ T4041] [ 271.817963][ T4041] [ 271.820281][ T4041] Allocated by task 6605: [ 271.824600][ T4041] kasan_save_stack+0x1e/0x40 [ 271.829303][ T4041] kasan_set_track+0x21/0x30 [ 271.833901][ T4041] __kasan_kmalloc+0xa1/0xb0 [ 271.838509][ T4041] __kmalloc+0x54/0xc0 [ 271.842583][ T4041] ops_init+0xfb/0x470 [ 271.846674][ T4041] setup_net+0x5d1/0xc50 [ 271.850915][ T4041] copy_net_ns+0x318/0x760 [ 271.855331][ T4041] create_new_namespaces+0x3f6/0xb20 [ 271.860623][ T4041] unshare_nsproxy_namespaces+0xc1/0x1f0 [ 271.866263][ T4041] ksys_unshare+0x445/0x920 [ 271.870773][ T4041] __x64_sys_unshare+0x2d/0x40 [ 271.875545][ T4041] do_syscall_64+0x35/0xb0 [ 271.879961][ T4041] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 271.885923][ T4041] [ 271.888242][ T4041] Freed by task 6605: [ 271.892213][ T4041] kasan_save_stack+0x1e/0x40 [ 271.896901][ T4041] kasan_set_track+0x21/0x30 [ 271.901510][ T4041] kasan_save_free_info+0x2a/0x40 [ 271.906534][ T4041] ____kasan_slab_free+0x160/0x1c0 [ 271.911656][ T4041] slab_free_freelist_hook+0x8b/0x1c0 [ 271.917035][ T4041] __kmem_cache_free+0xab/0x3b0 [ 271.921895][ T4041] ops_init+0xcd/0x470 [ 271.925967][ T4041] setup_net+0x5d1/0xc50 [ 271.930207][ T4041] copy_net_ns+0x318/0x760 [ 271.934625][ T4041] create_new_namespaces+0x3f6/0xb20 [ 271.939918][ T4041] unshare_nsproxy_namespaces+0xc1/0x1f0 [ 271.945557][ T4041] ksys_unshare+0x445/0x920 [ 271.950065][ T4041] __x64_sys_unshare+0x2d/0x40 [ 271.954838][ T4041] do_syscall_64+0x35/0xb0 [ 271.959255][ T4041] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 271.965164][ T4041] [ 271.967486][ T4041] Last potentially related work creation: [ 271.973198][ T4041] kasan_save_stack+0x1e/0x40 [ 271.977887][ T4041] __kasan_record_aux_stack+0xbc/0xd0 [ 271.983262][ T4041] call_rcu+0x99/0x820 [ 271.987336][ T4041] netlink_release+0xeff/0x1db0 [ 271.992520][ T4041] sock_release+0x87/0x1b0 [ 271.996958][ T4041] netlink_kernel_release+0x4b/0x60 [ 272.002160][ T4041] uevent_net_exit+0xbd/0x290 [ 272.006844][ T4041] ops_exit_list+0xb0/0x170 [ 272.011347][ T4041] setup_net+0x7fb/0xc50 [ 272.015592][ T4041] copy_net_ns+0x318/0x760 [ 272.020011][ T4041] create_new_namespaces+0x3f6/0xb20 [ 272.025310][ T4041] unshare_nsproxy_namespaces+0xc1/0x1f0 [ 272.030958][ T4041] ksys_unshare+0x445/0x920 [ 272.035467][ T4041] __x64_sys_unshare+0x2d/0x40 [ 272.040244][ T4041] do_syscall_64+0x35/0xb0 [ 272.044659][ T4041] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 272.050566][ T4041] [ 272.052883][ T4041] Second to last potentially related work creation: [ 272.059453][ T4041] kasan_save_stack+0x1e/0x40 [ 272.064146][ T4041] __kasan_record_aux_stack+0xbc/0xd0 [ 272.069537][ T4041] call_rcu+0x99/0x820 [ 272.073616][ T4041] netlink_release+0xeff/0x1db0 [ 272.078523][ T4041] sock_release+0x87/0x1b0 [ 272.082945][ T4041] netlink_kernel_release+0x4b/0x60 [ 272.088166][ T4041] nfnetlink_net_exit_batch+0x10e/0x320 [ 272.093866][ T4041] ops_exit_list+0x125/0x170 [ 272.098454][ T4041] cleanup_net+0x4ea/0xb00 [ 272.102874][ T4041] process_one_work+0x9bf/0x1710 [ 272.107902][ T4041] worker_thread+0x665/0x1080 [ 272.112583][ T4041] kthread+0x2e4/0x3a0 [ 272.116654][ T4041] ret_from_fork+0x1f/0x30 [ 272.121096][ T4041] [ 272.123414][ T4041] The buggy address belongs to the object at ffff8880771f3000 [ 272.123414][ T4041] which belongs to the cache kmalloc-2k of size 2048 [ 272.137470][ T4041] The buggy address is located 1488 bytes inside of [ 272.137470][ T4041] 2048-byte region [ffff8880771f3000, ffff8880771f3800) [ 272.150918][ T4041] [ 272.153323][ T4041] The buggy address belongs to the physical page: [ 272.159724][ T4041] page:ffffea0001dc7c00 refcount:1 mapcount:0 mapping:0000000000000000 index:0xdead000000000100 pfn:0x771f0 [ 272.171180][ T4041] head:ffffea0001dc7c00 order:3 compound_mapcount:0 compound_pincount:0 [ 272.179500][ T4041] flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) [ 272.187501][ T4041] raw: 00fff00000010200 ffff888011842000 dead000000080008 0000000000000000 [ 272.196087][ T4041] raw: dead000000000100 dead000000000122 00000001ffffffff 0000000000000000 [ 272.204661][ T4041] page dumped because: kasan: bad access detected [ 272.211062][ T4041] page_owner tracks the page as allocated [ 272.216766][ T4041] page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 4000, tgid 3999 (syz-executor384), ts 161576373475, free_ts 160558626651 [ 272.238564][ T4041] get_page_from_freelist+0x1092/0x2d20 [ 272.244117][ T4041] __alloc_pages+0x1c7/0x5a0 [ 272.248707][ T4041] alloc_pages+0x1a6/0x270 [ 272.253135][ T4041] allocate_slab+0x213/0x300 [ 272.257733][ T4041] ___slab_alloc+0xac1/0x1430 [ 272.262418][ T4041] __slab_alloc.constprop.0+0x4d/0xa0 [ 272.267801][ T4041] __kmem_cache_alloc_node+0x18a/0x3d0 [ 272.273269][ T4041] __kmalloc+0x44/0xc0 [ 272.277349][ T4041] cache_create_net+0xa3/0x220 [ 272.282167][ T4041] nfsd_idmap_init+0x1fe/0x470 [ 272.286930][ T4041] nfsd_init_net+0x139/0x430 [ 272.291522][ T4041] ops_init+0xaf/0x470 [ 272.295591][ T4041] setup_net+0x5d1/0xc50 [ 272.299834][ T4041] copy_net_ns+0x318/0x760 [ 272.304250][ T4041] create_new_namespaces+0x3f6/0xb20 [ 272.309544][ T4041] unshare_nsproxy_namespaces+0xc1/0x1f0 [ 272.315185][ T4041] page last free stack trace: [ 272.319851][ T4041] free_pcp_prepare+0x65c/0xd90 [ 272.324715][ T4041] free_unref_page+0x19/0x4d0 [ 272.329390][ T4041] __unfreeze_partials+0x17c/0x1a0 [ 272.334510][ T4041] qlist_free_all+0x6a/0x170 [ 272.339190][ T4041] kasan_quarantine_reduce+0x180/0x200 [ 272.344654][ T4041] __kasan_slab_alloc+0x62/0x80 [ 272.349520][ T4041] kmem_cache_alloc_node+0x2ff/0x400 [ 272.354812][ T4041] copy_process+0x5c2/0x71b0 [ 272.359411][ T4041] kernel_clone+0xe7/0x980 [ 272.363843][ T4041] __do_sys_clone+0xba/0x100 [ 272.368467][ T4041] do_syscall_64+0x35/0xb0 [ 272.372912][ T4041] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 272.378819][ T4041] [ 272.381138][ T4041] Memory state around the buggy address: [ 272.386762][ T4041] ffff8880771f3480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 272.394817][ T4041] ffff8880771f3500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 272.402872][ T4041] >ffff8880771f3580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 272.410923][ T4041] ^ [ 272.417589][ T4041] ffff8880771f3600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb executing program [ 272.425643][ T4041] ffff8880771f3680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 272.433694][ T4041] ================================================================== [ 272.478009][ T4041] Kernel panic - not syncing: panic_on_warn set ... [ 272.484641][ T4041] CPU: 0 PID: 4041 Comm: kworker/0:23 Not tainted 6.0.0-rc6-next-20220923-syzkaller #0 [ 272.494291][ T4041] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 272.504363][ T4041] Workqueue: events free_ipc [ 272.508973][ T4041] Call Trace: [ 272.512259][ T4041] [ 272.515204][ T4041] dump_stack_lvl+0xcd/0x134 [ 272.519909][ T4041] panic+0x2c8/0x622 [ 272.527260][ T4041] ? panic_print_sys_info.part.0+0x110/0x110 [ 272.533258][ T4041] ? preempt_schedule_common+0x59/0xc0 [ 272.538737][ T4041] ? preempt_schedule_thunk+0x16/0x18 [ 272.544140][ T4041] end_report.part.0+0x3f/0x7c [ 272.548923][ T4041] ? __list_del_entry_valid+0xe8/0x110 [ 272.554404][ T4041] kasan_report.cold+0xa/0xf [ 272.559018][ T4041] ? __list_del_entry_valid+0xe8/0x110 [ 272.564505][ T4041] __list_del_entry_valid+0xe8/0x110 [ 272.569818][ T4041] unregister_shrinker+0x83/0x2f0 [ 272.574903][ T4041] deactivate_locked_super+0x6c/0x160 [ 272.580301][ T4041] deactivate_super+0xad/0xd0 [ 272.584994][ T4041] cleanup_mnt+0x2ae/0x3d0 [ 272.589427][ T4041] mntput_no_expire+0x7f8/0xb50 [ 272.594295][ T4041] ? lock_acquire+0x4fc/0x630 [ 272.598985][ T4041] ? mnt_get_count+0x1c0/0x1c0 [ 272.603762][ T4041] ? lock_release+0x810/0x810 [ 272.608444][ T4041] ? lock_downgrade+0x6e0/0x6e0 [ 272.613299][ T4041] ? finish_task_switch.isra.0+0x2b5/0xc80 [ 272.619108][ T4041] kern_unmount+0xb5/0xe0 [ 272.623441][ T4041] free_ipc+0xf0/0x210 [ 272.627519][ T4041] process_one_work+0x9bf/0x1710 [ 272.632468][ T4041] ? pwq_dec_nr_in_flight+0x2a0/0x2a0 [ 272.637860][ T4041] ? rwlock_bug.part.0+0x90/0x90 [ 272.642808][ T4041] worker_thread+0x665/0x1080 [ 272.647499][ T4041] ? process_one_work+0x1710/0x1710 [ 272.652717][ T4041] kthread+0x2e4/0x3a0 [ 272.656802][ T4041] ? kthread_complete_and_exit+0x40/0x40 [ 272.662442][ T4041] ret_from_fork+0x1f/0x30 [ 272.666885][ T4041] [ 272.670084][ T4041] Kernel Offset: disabled [ 272.674412][ T4041] Rebooting in 86400 seconds..