[ 45.484228][ T4510] ------------[ cut here ]------------ [ 45.490965][ T4510] hook not found, pf 3 num 0 [ 45.491080][ T4510] WARNING: CPU: 1 PID: 4510 at net/netfilter/core.c:480 __nf_unregister_net_hook+0x17a/0x560 [ 45.506840][ T4510] Modules linked in: [ 45.511071][ T4510] CPU: 1 PID: 4510 Comm: kworker/u4:6 Not tainted 5.12.0-syzkaller #0 [ 45.520317][ T4510] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 45.532055][ T4510] Workqueue: netns cleanup_net [ 45.537471][ T4510] RIP: 0010:__nf_unregister_net_hook+0x17a/0x560 [ 45.544525][ T4510] 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 00 b1 9d 89 4c 89 04 24 e8 86 86 62 01 <0f> 0b 4c 8b 04 24 e9 ba 00 00 00 48 89 ea 48 c1 e2 04 49 8d 7c 10 [ 45.565655][ T4510] RSP: 0018:ffffc9000a15fbf0 EFLAGS: 00010282 [ 45.571950][ T4510] RAX: 0000000000000000 RBX: ffff888022861f00 RCX: 0000000000000000 [ 45.580568][ T4510] RDX: 0000000000000001 RSI: 0000000000000004 RDI: fffff5200142bf70 [ 45.589386][ T4510] RBP: 0000000000000001 R08: 0000000000000001 R09: ffff8880ba11fa5b [ 45.598888][ T4510] R10: ffffed1017423f4b R11: 0000000000000001 R12: 0000000000000003 [ 45.607986][ T4510] R13: ffff88802cb78000 R14: ffff888022861f1c R15: ffff88802cb78f20 [ 45.617304][ T4510] FS: 0000000000000000(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 [ 45.627360][ T4510] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 45.634402][ T4510] CR2: 00007fff6c7adff8 CR3: 0000000025801000 CR4: 00000000001506e0 [ 45.643490][ T4510] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 45.653592][ T4510] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 45.663193][ T4510] Call Trace: [ 45.667681][ T4510] nf_unregister_net_hooks+0xb1/0xf0 [ 45.673801][ T4510] cleanup_net+0x3a4/0x990 [ 45.678889][ T4510] ? ops_free_list.part.0+0x2d0/0x2d0 [ 45.684559][ T4510] ? lock_is_held_type+0xd5/0x130 [ 45.689816][ T4510] process_one_work+0x84c/0x13b0 [ 45.695042][ T4510] ? lock_release+0x710/0x710 [ 45.701550][ T4510] ? pwq_dec_nr_in_flight+0x2b0/0x2b0 [ 45.708707][ T4510] ? rwlock_bug.part.0+0x90/0x90 [ 45.714508][ T4510] ? _raw_spin_lock_irq+0x41/0x50 [ 45.720820][ T4510] worker_thread+0x598/0xf80 [ 45.725739][ T4510] ? __kthread_parkme+0xa2/0x1c0 [ 45.731320][ T4510] ? process_one_work+0x13b0/0x13b0 [ 45.736951][ T4510] kthread+0x36f/0x450 [ 45.741400][ T4510] ? _raw_spin_unlock_irq+0x1f/0x40 [ 45.747556][ T4510] ? __kthread_bind_mask+0x90/0x90 [ 45.753040][ T4510] ret_from_fork+0x1f/0x30 [ 45.759047][ T4510] Kernel panic - not syncing: panic_on_warn set ... [ 45.765992][ T4510] CPU: 1 PID: 4510 Comm: kworker/u4:6 Not tainted 5.12.0-syzkaller #0 [ 45.775090][ T4510] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 45.787544][ T4510] Workqueue: netns cleanup_net [ 45.793184][ T4510] Call Trace: [ 45.796659][ T4510] dump_stack+0x93/0xc2 [ 45.801279][ T4510] panic+0x256/0x4eb [ 45.806038][ T4510] ? __warn_printk+0xee/0xee [ 45.810973][ T4510] ? __nf_unregister_net_hook+0x17a/0x560 [ 45.817165][ T4510] __warn.cold+0x2b/0x35 [ 45.822183][ T4510] ? __nf_unregister_net_hook+0x17a/0x560 [ 45.828285][ T4510] report_bug+0x15a/0x1b0 [ 45.833212][ T4510] handle_bug+0x3c/0x60 [ 45.837400][ T4510] exc_invalid_op+0x14/0x40 [ 45.842434][ T4510] asm_exc_invalid_op+0x12/0x20 [ 45.847643][ T4510] RIP: 0010:__nf_unregister_net_hook+0x17a/0x560 [ 45.854648][ T4510] 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 00 b1 9d 89 4c 89 04 24 e8 86 86 62 01 <0f> 0b 4c 8b 04 24 e9 ba 00 00 00 48 89 ea 48 c1 e2 04 49 8d 7c 10 [ 45.875848][ T4510] RSP: 0018:ffffc9000a15fbf0 EFLAGS: 00010282 [ 45.882074][ T4510] RAX: 0000000000000000 RBX: ffff888022861f00 RCX: 0000000000000000 [ 45.890474][ T4510] RDX: 0000000000000001 RSI: 0000000000000004 RDI: fffff5200142bf70 [ 45.899002][ T4510] RBP: 0000000000000001 R08: 0000000000000001 R09: ffff8880ba11fa5b [ 45.907689][ T4510] R10: ffffed1017423f4b R11: 0000000000000001 R12: 0000000000000003 [ 45.916429][ T4510] R13: ffff88802cb78000 R14: ffff888022861f1c R15: ffff88802cb78f20 [ 45.925110][ T4510] nf_unregister_net_hooks+0xb1/0xf0 [ 45.930381][ T4510] cleanup_net+0x3a4/0x990 [ 45.935066][ T4510] ? ops_free_list.part.0+0x2d0/0x2d0 [ 45.940784][ T4510] ? lock_is_held_type+0xd5/0x130 [ 45.945864][ T4510] process_one_work+0x84c/0x13b0 [ 45.951043][ T4510] ? lock_release+0x710/0x710 [ 45.955694][ T4510] ? pwq_dec_nr_in_flight+0x2b0/0x2b0 [ 45.961307][ T4510] ? rwlock_bug.part.0+0x90/0x90 [ 45.966318][ T4510] ? _raw_spin_lock_irq+0x41/0x50 [ 45.971677][ T4510] worker_thread+0x598/0xf80 [ 45.976399][ T4510] ? __kthread_parkme+0xa2/0x1c0 [ 45.981766][ T4510] ? process_one_work+0x13b0/0x13b0 [ 45.987436][ T4510] kthread+0x36f/0x450 [ 45.992459][ T4510] ? _raw_spin_unlock_irq+0x1f/0x40 [ 45.997835][ T4510] ? __kthread_bind_mask+0x90/0x90 [ 46.003600][ T4510] ret_from_fork+0x1f/0x30 [ 46.010390][ T4510] Kernel Offset: disabled [ 46.014935][ T4510] Rebooting in 86400 seconds..