------------[ cut here ]------------
kernel BUG at net/8021q/vlan.c:99!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 0 UID: 0 PID: 4257 Comm: kworker/u8:8 Not tainted 6.15.0-rc7-syzkaller-01759-gf5b60d6a575a #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Workqueue: netns cleanup_net
RIP: 0010:unregister_vlan_dev+0x4da/0x4e0 net/8021q/vlan.c:99
Code: f7 e8 fa 53 8f f7 e9 e7 fe ff ff e8 70 58 2d f7 48 c7 c7 00 10 51 8f 4c 89 ee e8 31 8c 5b fa e9 c4 fd ff ff e8 57 58 2d f7 90 <0f> 0b 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc9000e5cf7f8 EFLAGS: 00010293
RAX: ffffffff8a929989 RBX: ffff88805b57a000 RCX: ffff8880327e9e00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 0000000000000001 R08: ffffffff8f2fabe7 R09: 1ffffffff1e5f57c
R10: dffffc0000000000 R11: fffffbfff1e5f57d R12: ffff888055236000
R13: ffffc9000e5cf900 R14: ffff88805b57a428 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8881260b0000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000020000000d000 CR3: 0000000057776000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 default_device_exit_batch+0x766/0x890 net/core/dev.c:12637
 ops_exit_list net/core/net_namespace.c:206 [inline]
 ops_undo_list+0x525/0x990 net/core/net_namespace.c:253
 cleanup_net+0x4c5/0x8a0 net/core/net_namespace.c:686
 process_one_work kernel/workqueue.c:3238 [inline]
 process_scheduled_works+0xade/0x17a0 kernel/workqueue.c:3319
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400
 kthread+0x70e/0x8a0 kernel/kthread.c:464
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:unregister_vlan_dev+0x4da/0x4e0 net/8021q/vlan.c:99
Code: f7 e8 fa 53 8f f7 e9 e7 fe ff ff e8 70 58 2d f7 48 c7 c7 00 10 51 8f 4c 89 ee e8 31 8c 5b fa e9 c4 fd ff ff e8 57 58 2d f7 90 <0f> 0b 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc9000e5cf7f8 EFLAGS: 00010293
RAX: ffffffff8a929989 RBX: ffff88805b57a000 RCX: ffff8880327e9e00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 0000000000000001 R08: ffffffff8f2fabe7 R09: 1ffffffff1e5f57c
R10: dffffc0000000000 R11: fffffbfff1e5f57d R12: ffff888055236000
R13: ffffc9000e5cf900 R14: ffff88805b57a428 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8881260b0000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0cc4ccb6b0 CR3: 0000000067726000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400