------------[ cut here ]------------ 1 WARNING: net/netfilter/core.c:329 at nf_hook_entry_head+0x23e/0x2c0 net/netfilter/core.c:329, CPU#1: kworker/u8:10/14367 Modules linked in: CPU: 1 UID: 0 PID: 14367 Comm: kworker/u8:10 Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 Workqueue: netns cleanup_net RIP: 0010:nf_hook_entry_head+0x23e/0x2c0 net/netfilter/core.c:329 Code: 4c 89 f8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 74 08 4c 89 ff e8 8d cf 69 f8 4d 39 37 74 36 e8 03 91 ff f7 90 <0f> 0b 90 31 db 48 89 d8 5b 41 5e 41 5f 5d c3 cc cc cc cc cc e8 e9 RSP: 0018:ffffc9000528f820 EFLAGS: 00010293 RAX: ffffffff89c6049b RBX: ffff8880693e4000 RCX: ffff88801df78000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: ffff88801df78000 R09: 0000000000000006 R10: 000000000000000a R11: 0000000000000000 R12: ffff888077b02640 R13: 0000000000000005 R14: ffff888077b02640 R15: ffff8880693e4108 FS: 0000000000000000(0000) GS:ffff888125564000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000048030 CR3: 000000004e61e000 CR4: 00000000003526f0 Call Trace: __nf_unregister_net_hook+0x74/0x6f0 net/netfilter/core.c:491 nft_unregister_flowtable_ops net/netfilter/nf_tables_api.c:8895 [inline] __nft_unregister_flowtable_net_hooks net/netfilter/nf_tables_api.c:8910 [inline] __nft_release_hook net/netfilter/nf_tables_api.c:11899 [inline] __nft_release_hooks net/netfilter/nf_tables_api.c:11913 [inline] nf_tables_pre_exit_net+0x64a/0x900 net/netfilter/nf_tables_api.c:12064 ops_pre_exit_list net/core/net_namespace.c:161 [inline] ops_undo_list+0x187/0x940 net/core/net_namespace.c:234 cleanup_net+0x56b/0x800 net/core/net_namespace.c:704 process_one_work kernel/workqueue.c:3275 [inline] process_scheduled_works+0xb02/0x1830 kernel/workqueue.c:3358 worker_thread+0xa50/0xfc0 kernel/workqueue.c:3439 kthread+0x388/0x470 kernel/kthread.c:467 ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245