[ 47.784841][ T1294] ------------[ cut here ]------------ [ 47.790493][ T1294] hook not found, pf 3 num 0 [ 47.790619][ T1294] WARNING: CPU: 1 PID: 1294 at net/netfilter/core.c:480 __nf_unregister_net_hook+0x17a/0x560 [ 47.808779][ T1294] Modules linked in: [ 47.809164][ T8403] syz-executor.0 (8403) used greatest stack depth: 22936 bytes left [ 47.816152][ T1294] CPU: 1 PID: 1294 Comm: kworker/u4:6 Not tainted 5.12.0-rc7-syzkaller #0 [ 47.830394][ T1294] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 47.840817][ T1294] Workqueue: netns cleanup_net [ 47.845837][ T1294] RIP: 0010:__nf_unregister_net_hook+0x17a/0x560 [ 47.852178][ T1294] 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 [ 47.872587][ T1294] RSP: 0018:ffffc900053cfbf0 EFLAGS: 00010282 [ 47.879195][ T1294] RAX: 0000000000000000 RBX: ffff88814a0d8100 RCX: 0000000000000000 [ 47.887487][ T1294] RDX: 0000000000000001 RSI: 0000000000000004 RDI: fffff52000a79f70 [ 47.895824][ T1294] RBP: 0000000000000001 R08: 0000000000000001 R09: ffff8880ba11fa1b [ 47.904001][ T1294] R10: ffffed1017423f43 R11: 0000000000000001 R12: 0000000000000003 [ 47.912104][ T1294] R13: ffff888028b78000 R14: ffff88814a0d811c R15: ffff888028b78f60 [ 47.920569][ T1294] FS: 0000000000000000(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 [ 47.929801][ T1294] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 47.936771][ T1294] CR2: 00007f79e3821050 CR3: 0000000023258000 CR4: 00000000001506e0 [ 47.944845][ T1294] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 47.952845][ T1294] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 47.961015][ T1294] Call Trace: [ 47.964408][ T1294] nf_unregister_net_hooks+0xb1/0xf0 [ 47.970189][ T1294] cleanup_net+0x3a4/0x990 [ 47.975823][ T1294] ? do_raw_spin_lock+0x120/0x2b0 [ 47.980906][ T1294] ? ops_free_list.part.0+0x2d0/0x2d0 [ 47.986465][ T1294] ? rwlock_bug.part.0+0x90/0x90 [ 47.991475][ T1294] process_one_work+0x84c/0x13b0 [ 47.996520][ T1294] ? lock_release+0x720/0x720 [ 48.001455][ T1294] ? pwq_dec_nr_in_flight+0x2b0/0x2b0 [ 48.006933][ T1294] ? rwlock_bug.part.0+0x90/0x90 [ 48.012024][ T1294] ? _raw_spin_lock_irq+0x41/0x50 [ 48.017273][ T1294] worker_thread+0x598/0xf80 [ 48.021889][ T1294] ? __kthread_parkme+0xa2/0x1c0 [ 48.027083][ T1294] ? process_one_work+0x13b0/0x13b0 [ 48.032559][ T1294] kthread+0x36f/0x450 [ 48.036789][ T1294] ? _raw_spin_unlock_irq+0x1f/0x40 [ 48.042022][ T1294] ? __kthread_bind_mask+0x90/0x90 [ 48.047392][ T1294] ret_from_fork+0x1f/0x30 [ 48.051957][ T1294] Kernel panic - not syncing: panic_on_warn set ... [ 48.058544][ T1294] CPU: 1 PID: 1294 Comm: kworker/u4:6 Not tainted 5.12.0-rc7-syzkaller #0 [ 48.067030][ T1294] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 48.077244][ T1294] Workqueue: netns cleanup_net [ 48.082432][ T1294] Call Trace: [ 48.085698][ T1294] dump_stack+0xa5/0xe6 [ 48.089839][ T1294] panic+0x256/0x4eb [ 48.093722][ T1294] ? __warn_printk+0xee/0xee [ 48.098420][ T1294] ? __nf_unregister_net_hook+0x17a/0x560 [ 48.104254][ T1294] __warn.cold+0x2b/0x35 [ 48.109408][ T1294] ? __nf_unregister_net_hook+0x17a/0x560 [ 48.115731][ T1294] report_bug+0x15a/0x1b0 [ 48.120407][ T1294] handle_bug+0x3c/0x60 [ 48.124618][ T1294] exc_invalid_op+0x14/0x40 [ 48.129226][ T1294] asm_exc_invalid_op+0x12/0x20 [ 48.134495][ T1294] RIP: 0010:__nf_unregister_net_hook+0x17a/0x560 [ 48.141364][ T1294] 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 [ 48.161598][ T1294] RSP: 0018:ffffc900053cfbf0 EFLAGS: 00010282 [ 48.167766][ T1294] RAX: 0000000000000000 RBX: ffff88814a0d8100 RCX: 0000000000000000 [ 48.175729][ T1294] RDX: 0000000000000001 RSI: 0000000000000004 RDI: fffff52000a79f70 [ 48.183694][ T1294] RBP: 0000000000000001 R08: 0000000000000001 R09: ffff8880ba11fa1b [ 48.191668][ T1294] R10: ffffed1017423f43 R11: 0000000000000001 R12: 0000000000000003 [ 48.199622][ T1294] R13: ffff888028b78000 R14: ffff88814a0d811c R15: ffff888028b78f60 [ 48.207607][ T1294] nf_unregister_net_hooks+0xb1/0xf0 [ 48.212980][ T1294] cleanup_net+0x3a4/0x990 [ 48.217491][ T1294] ? do_raw_spin_lock+0x120/0x2b0 [ 48.222521][ T1294] ? ops_free_list.part.0+0x2d0/0x2d0 [ 48.227909][ T1294] ? rwlock_bug.part.0+0x90/0x90 [ 48.232860][ T1294] process_one_work+0x84c/0x13b0 [ 48.237828][ T1294] ? lock_release+0x720/0x720 [ 48.242618][ T1294] ? pwq_dec_nr_in_flight+0x2b0/0x2b0 [ 48.248246][ T1294] ? rwlock_bug.part.0+0x90/0x90 [ 48.253310][ T1294] ? _raw_spin_lock_irq+0x41/0x50 [ 48.258443][ T1294] worker_thread+0x598/0xf80 [ 48.263542][ T1294] ? __kthread_parkme+0xa2/0x1c0 [ 48.268658][ T1294] ? process_one_work+0x13b0/0x13b0 [ 48.274134][ T1294] kthread+0x36f/0x450 [ 48.278235][ T1294] ? _raw_spin_unlock_irq+0x1f/0x40 [ 48.284052][ T1294] ? __kthread_bind_mask+0x90/0x90 [ 48.289165][ T1294] ret_from_fork+0x1f/0x30 [ 48.295631][ T1294] Kernel Offset: disabled [ 48.300153][ T1294] Rebooting in 86400 seconds..