Hello, syzbot found the following issue on: HEAD commit: b229b6ca5abb Merge tag 'perf-tools-fixes-for-v6.1-2022-10-.. git tree: upstream console+strace: https://syzkaller.appspot.com/x/log.txt?x=126df922880000 kernel config: https://syzkaller.appspot.com/x/.config?x=a66c6c673fb555e8 dashboard link: https://syzkaller.appspot.com/bug?extid=178efee9e2d7f87f5103 compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1607b841880000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=153ceafc880000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/7a7054f95968/disk-b229b6ca.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/907d97ef4d30/vmlinux-b229b6ca.xz kernel image: https://storage.googleapis.com/syzbot-assets/5f5f3eb6d623/bzImage-b229b6ca.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+178efee9e2d7f87f5103@xxxxxxxxxxxxxxxxxxxxxxxxx ------------[ cut here ]------------ WARNING: CPU: 0 PID: 41 at net/netfilter/nf_tables_api.c:10096 nf_tables_exit_net+0x714/0x830 net/netfilter/nf_tables_api.c:10096 Modules linked in: CPU: 0 PID: 41 Comm: kworker/u4:2 Not tainted 6.1.0-rc2-syzkaller-00105-gb229b6ca5abb #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022 Workqueue: netns cleanup_net RIP: 0010:nf_tables_exit_net+0x714/0x830 net/netfilter/nf_tables_api.c:10096 Code: 1e 06 01 e8 f4 6c 9c 01 e9 af f9 ff ff e8 74 e9 ce f9 0f 0b e9 87 fd ff ff e8 68 e9 ce f9 0f 0b e9 19 fd ff ff e8 5c e9 ce f9 <0f> 0b e9 3e fd ff ff e8 90 39 1b fa e9 ac fb ff ff 48 89 ef e8 a3 RSP: 0018:ffffc90000b27bd0 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffff88801e637620 RCX: 0000000000000000 RDX: ffff8880175d1d40 RSI: ffffffff87adb324 RDI: ffffc90000b27b18 RBP: ffff88801e637600 R08: 0000000000000001 R09: ffffc90000b27b1f R10: fffff52000164f63 R11: 000000000008c07e R12: 0000000000000001 R13: ffff88801e637600 R14: ffff8880239b8000 R15: ffff88801e637600 FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fc41202e01d CR3: 000000001d891000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> ops_exit_list+0xb0/0x170 net/core/net_namespace.c:169 cleanup_net+0x4ea/0xb00 net/core/net_namespace.c:601 process_one_work+0x9bf/0x1710 kernel/workqueue.c:2289 worker_thread+0x665/0x1080 kernel/workqueue.c:2436 kthread+0x2e4/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 </TASK> --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. syzbot can test patches for this issue, for details see: https://goo.gl/tpsmEJ#testing-patches