[ 43.369876][ T8401] syz-executor.0 (8401) used greatest stack depth: 23088 bytes left [ 43.382286][ T9] ------------[ cut here ]------------ [ 43.388636][ T9] hook not found, pf 3 num 0 [ 43.388750][ T9] WARNING: CPU: 1 PID: 9 at net/netfilter/core.c:480 __nf_unregister_net_hook+0x17a/0x560 [ 43.403576][ T9] Modules linked in: [ 43.407488][ T9] CPU: 0 PID: 9 Comm: kworker/u4:0 Not tainted 5.12.0-rc7-syzkaller #0 [ 43.416477][ T9] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 43.427076][ T9] Workqueue: netns cleanup_net [ 43.432692][ T9] RIP: 0010:__nf_unregister_net_hook+0x17a/0x560 [ 43.439148][ T9] Code: 89 f0 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 a7 03 00 00 8b 53 1c 44 89 e6 48 c7 c7 20 bc 9e 89 4c 89 04 24 e8 fe 3a 62 01 <0f> 0b 4c 8b 04 24 e9 ba 00 00 00 48 89 ea 48 c1 e2 04 49 8d 7c 10 [ 43.460597][ T9] RSP: 0018:ffffc90000ce7bf0 EFLAGS: 00010282 [ 43.467100][ T9] RAX: 0000000000000000 RBX: ffff888149dafc00 RCX: 0000000000000000 [ 43.475166][ T9] RDX: 0000000000000001 RSI: 0000000000000004 RDI: fffff5200019cf70 [ 43.483258][ T9] RBP: 0000000000000001 R08: 0000000000000001 R09: ffff8880ba11fa1b [ 43.491998][ T9] R10: ffffed1017423f43 R11: 0000000000000001 R12: 0000000000000003 [ 43.500082][ T9] R13: ffff88802c2e0000 R14: ffff888149dafc1c R15: ffff88802c2e0f60 [ 43.508059][ T9] FS: 0000000000000000(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 43.517249][ T9] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 43.524954][ T9] CR2: 0000560358309160 CR3: 000000000a68e000 CR4: 00000000001506f0 [ 43.533660][ T9] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 43.541889][ T9] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 43.550263][ T9] Call Trace: [ 43.553551][ T9] nf_unregister_net_hooks+0xb1/0xf0 [ 43.558930][ T9] cleanup_net+0x3a4/0x990 [ 43.563343][ T9] ? do_raw_spin_lock+0x120/0x2b0 [ 43.568451][ T9] ? ops_free_list.part.0+0x2d0/0x2d0 [ 43.573822][ T9] ? rwlock_bug.part.0+0x90/0x90 [ 43.579019][ T9] process_one_work+0x84c/0x13b0 [ 43.584000][ T9] ? lock_release+0x720/0x720 [ 43.594244][ T9] ? pwq_dec_nr_in_flight+0x2b0/0x2b0 [ 43.600603][ T9] ? rwlock_bug.part.0+0x90/0x90 [ 43.605981][ T9] ? _raw_spin_lock_irq+0x41/0x50 [ 43.611394][ T9] worker_thread+0x598/0xf80 [ 43.616000][ T9] ? process_one_work+0x13b0/0x13b0 [ 43.621594][ T9] kthread+0x36f/0x450 [ 43.625682][ T9] ? _raw_spin_unlock_irq+0x1f/0x40 [ 43.630967][ T9] ? __kthread_bind_mask+0x90/0x90 [ 43.636308][ T9] ret_from_fork+0x1f/0x30 [ 43.640930][ T9] Kernel panic - not syncing: panic_on_warn set ... [ 43.647597][ T9] CPU: 0 PID: 9 Comm: kworker/u4:0 Not tainted 5.12.0-rc7-syzkaller #0 [ 43.656101][ T9] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 43.666458][ T9] Workqueue: netns cleanup_net [ 43.671228][ T9] Call Trace: [ 43.674514][ T9] dump_stack+0xa5/0xe6 [ 43.678865][ T9] panic+0x256/0x4eb [ 43.682800][ T9] ? __warn_printk+0xee/0xee [ 43.687849][ T9] ? __nf_unregister_net_hook+0x17a/0x560 [ 43.693574][ T9] __warn.cold+0x2b/0x35 [ 43.697984][ T9] ? __nf_unregister_net_hook+0x17a/0x560 [ 43.703762][ T9] report_bug+0x15a/0x1b0 [ 43.708070][ T9] handle_bug+0x3c/0x60 [ 43.712200][ T9] exc_invalid_op+0x14/0x40 [ 43.716676][ T9] asm_exc_invalid_op+0x12/0x20 [ 43.721501][ T9] RIP: 0010:__nf_unregister_net_hook+0x17a/0x560 [ 43.727885][ T9] Code: 89 f0 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 a7 03 00 00 8b 53 1c 44 89 e6 48 c7 c7 20 bc 9e 89 4c 89 04 24 e8 fe 3a 62 01 <0f> 0b 4c 8b 04 24 e9 ba 00 00 00 48 89 ea 48 c1 e2 04 49 8d 7c 10 [ 43.747671][ T9] RSP: 0018:ffffc90000ce7bf0 EFLAGS: 00010282 [ 43.753819][ T9] RAX: 0000000000000000 RBX: ffff888149dafc00 RCX: 0000000000000000 [ 43.761780][ T9] RDX: 0000000000000001 RSI: 0000000000000004 RDI: fffff5200019cf70 [ 43.769730][ T9] RBP: 0000000000000001 R08: 0000000000000001 R09: ffff8880ba11fa1b [ 43.777677][ T9] R10: ffffed1017423f43 R11: 0000000000000001 R12: 0000000000000003 [ 43.786029][ T9] R13: ffff88802c2e0000 R14: ffff888149dafc1c R15: ffff88802c2e0f60 [ 43.793993][ T9] nf_unregister_net_hooks+0xb1/0xf0 [ 43.799357][ T9] cleanup_net+0x3a4/0x990 [ 43.804196][ T9] ? do_raw_spin_lock+0x120/0x2b0 [ 43.809232][ T9] ? ops_free_list.part.0+0x2d0/0x2d0 [ 43.814700][ T9] ? rwlock_bug.part.0+0x90/0x90 [ 43.820416][ T9] process_one_work+0x84c/0x13b0 [ 43.825361][ T9] ? lock_release+0x720/0x720 [ 43.830017][ T9] ? pwq_dec_nr_in_flight+0x2b0/0x2b0 [ 43.835378][ T9] ? rwlock_bug.part.0+0x90/0x90 [ 43.840400][ T9] ? _raw_spin_lock_irq+0x41/0x50 [ 43.845415][ T9] worker_thread+0x598/0xf80 [ 43.850000][ T9] ? process_one_work+0x13b0/0x13b0 [ 43.855203][ T9] kthread+0x36f/0x450 [ 43.859275][ T9] ? _raw_spin_unlock_irq+0x1f/0x40 [ 43.864468][ T9] ? __kthread_bind_mask+0x90/0x90 [ 43.869583][ T9] ret_from_fork+0x1f/0x30 [ 43.874249][ T9] Kernel Offset: disabled [ 43.878670][ T9] Rebooting in 86400 seconds..