IPVS: stopping backup sync thread 6115 ... ------------[ cut here ]------------ kernel BUG at net/8021q/vlan.c:100! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI CPU: 0 UID: 0 PID: 12481 Comm: kworker/u8:27 Not tainted 6.13.0-syzkaller-09685-gc2933b2befe2 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 Workqueue: netns cleanup_net RIP: 0010:unregister_vlan_dev+0x4b5/0x4c0 net/8021q/vlan.c:100 Code: df e8 4f 87 04 f7 e9 ea fe ff ff e8 a5 f2 9d f6 48 c7 c7 00 b9 ec 8f 4c 89 f6 e8 26 44 ff f9 e9 cb fd ff ff e8 8c f2 9d f6 90 <0f> 0b 66 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 RSP: 0018:ffffc9000bb3f870 EFLAGS: 00010293 RAX: ffffffff8b217a04 RBX: ffff88805c778428 RCX: ffff888025541e00 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffff888030b66e2a R08: ffffffff89c32d76 R09: 1ffffffff1f97e04 R10: dffffc0000000000 R11: fffffbfff1f97e05 R12: ffff888030b66000 R13: ffffc9000bb3f9a0 R14: ffff88805c778000 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f6519379178 CR3: 000000000e738000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: default_device_exit_batch+0x966/0xaa0 net/core/dev.c:12332 ops_exit_list net/core/net_namespace.c:177 [inline] cleanup_net+0x8ad/0xd60 net/core/net_namespace.c:652 process_one_work kernel/workqueue.c:3236 [inline] process_scheduled_works+0xa66/0x1840 kernel/workqueue.c:3317 worker_thread+0x870/0xd30 kernel/workqueue.c:3398 kthread+0x7a9/0x920 kernel/kthread.c:464 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:unregister_vlan_dev+0x4b5/0x4c0 net/8021q/vlan.c:100 Code: df e8 4f 87 04 f7 e9 ea fe ff ff e8 a5 f2 9d f6 48 c7 c7 00 b9 ec 8f 4c 89 f6 e8 26 44 ff f9 e9 cb fd ff ff e8 8c f2 9d f6 90 <0f> 0b 66 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 RSP: 0018:ffffc9000bb3f870 EFLAGS: 00010293 RAX: ffffffff8b217a04 RBX: ffff88805c778428 RCX: ffff888025541e00 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffff888030b66e2a R08: ffffffff89c32d76 R09: 1ffffffff1f97e04 R10: dffffc0000000000 R11: fffffbfff1f97e05 R12: ffff888030b66000 R13: ffffc9000bb3f9a0 R14: ffff88805c778000 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f6519379178 CR3: 000000000e738000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400