Hello, syzbot found the following issue on: HEAD commit: 052d534373b7 Merge tag 'exfat-for-6.8-rc1' of git://git.ke.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=111ec0fbe80000 kernel config: https://syzkaller.appspot.com/x/.config?x=7c8840a4a09eab8 dashboard link: https://syzkaller.appspot.com/bug?extid=ea8f0147cde55bfa62e9 compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/7bc7510fe41f/non_bootable_disk-052d5343.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/a58a0f0eb33d/vmlinux-052d5343.xz kernel image: https://storage.googleapis.com/syzbot-assets/019e6b0bba7a/bzImage-052d5343.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+ea8f0147cde55bfa62e9@xxxxxxxxxxxxxxxxxxxxxxxxx ------------[ cut here ]------------ WARNING: CPU: 1 PID: 4052 at net/netfilter/core.c:302 nf_hook_entry_head+0x289/0x300 net/netfilter/core.c:302 Modules linked in: CPU: 1 PID: 4052 Comm: kworker/u16:32 Not tainted 6.7.0-syzkaller-09928-g052d534373b7 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 Workqueue: netns cleanup_net RIP: 0010:nf_hook_entry_head+0x289/0x300 net/netfilter/core.c:302 Code: 80 3c 02 00 0f 85 82 00 00 00 4d 3b a5 08 01 00 00 75 a0 e8 c9 c0 cf f8 49 81 c5 90 00 00 00 e9 ae fe ff ff e8 b8 c0 cf f8 90 <0f> 0b 90 e9 24 ff ff ff e8 aa c0 cf f8 90 0f 0b 90 e9 16 ff ff ff RSP: 0018:ffffc9000c417ac0 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff88b736e5 RDX: ffff88803a6c2400 RSI: ffffffff88b73898 RDI: ffff888029572108 RBP: 0000000000000005 R08: 0000000000000005 R09: 0000000000000005 R10: 0000000000000005 R11: ffffffff8ace21e0 R12: ffff888064b59cc0 R13: ffff888029572000 R14: ffff88810a331c28 R15: ffff888035da3dec FS: 0000000000000000(0000) GS:ffff88806b700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005569f03ef238 CR3: 000000002d4cc000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> __nf_unregister_net_hook+0x81/0x680 net/netfilter/core.c:494 nf_unregister_net_hook net/netfilter/core.c:533 [inline] nf_unregister_net_hook+0xf3/0x110 net/netfilter/core.c:529 nft_netdev_unregister_hooks+0xaf/0x270 net/netfilter/nf_tables_api.c:309 __nf_tables_unregister_hook net/netfilter/nf_tables_api.c:358 [inline] __nf_tables_unregister_hook net/netfilter/nf_tables_api.c:340 [inline] __nft_release_hook+0x446/0x560 net/netfilter/nf_tables_api.c:11218 __nft_release_hooks net/netfilter/nf_tables_api.c:11233 [inline] nf_tables_pre_exit_net+0xc5/0x120 net/netfilter/nf_tables_api.c:11379 ops_pre_exit_list net/core/net_namespace.c:160 [inline] cleanup_net+0x46c/0xb20 net/core/net_namespace.c:606 process_one_work+0x886/0x15d0 kernel/workqueue.c:2633 process_scheduled_works kernel/workqueue.c:2706 [inline] worker_thread+0x8b9/0x1290 kernel/workqueue.c:2787 kthread+0x2c6/0x3a0 kernel/kthread.c:388 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242 </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. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup
