WARNING: CPU: 1 PID: 16454 at net/core/dev.c:10885 unregister_netdevice_many+0x2555/0x3020
Modules linked in:
CPU: 1 PID: 16454 Comm: kworker/u4:27 Not tainted 6.0.0-rc5-syzkaller-48543-g968c2729e576 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022
Workqueue: netns cleanup_net
RIP: 0010:unregister_netdevice_many+0x2555/0x3020 net/core/dev.c:10885
Code: 4a 49 39 de 0f 84 83 03 00 00 e8 76 55 b1 f6 e9 f1 ea ff ff 44 89 e7 e8 d9 63 30 f7 4d 39 ee 0f 84 34 fe ff ff e8 5b 55 b1 f6 <0f> 0b e9 2d fe ff ff e8 bf 63 30 f7 49 39 de 0f 84 20 ff ff ff e8
=====================================================
BUG: KMSAN: uninit-value in show_iret_regs+0x215/0x230 arch/x86/kernel/dumpstack.c:150
 show_iret_regs+0x215/0x230 arch/x86/kernel/dumpstack.c:150
 __show_regs+0x31/0xc90 arch/x86/kernel/process_64.c:74
 show_regs+0x6e/0xd0 arch/x86/kernel/dumpstack.c:469
 __warn+0x242/0x580 kernel/panic.c:621
 report_bug+0x7ff/0xa10 lib/bug.c:198
 handle_bug+0x41/0x70 arch/x86/kernel/traps.c:316
 exc_invalid_op+0x1b/0x50 arch/x86/kernel/traps.c:336
 asm_exc_invalid_op+0x1b/0x20
 unregister_netdevice_many+0x2555/0x3020
 default_device_exit_batch+0xb50/0xc20 net/core/dev.c:11356
 ops_exit_list net/core/net_namespace.c:168 [inline]
 cleanup_net+0xdea/0x18c0 net/core/net_namespace.c:595
 process_one_work+0xb27/0x13e0 kernel/workqueue.c:2289
 worker_thread+0x1076/0x1d60 kernel/workqueue.c:2436
 kthread+0x31b/0x430 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30

Local variable priv created at:
 netdev_upper_dev_unlink+0x42/0x70 net/core/dev.c:7786
 hsr_del_port+0x2c6/0x410 net/hsr/hsr_slave.c:217

CPU: 1 PID: 16454 Comm: kworker/u4:27 Not tainted 6.0.0-rc5-syzkaller-48543-g968c2729e576 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022
Workqueue: netns cleanup_net
=====================================================