kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
XFS (loop1): Unmounting Filesystem
Modules linked in:
CPU: 1 PID: 9103 Comm: kworker/1:4 Not tainted 4.14.305-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
Workqueue: events linkwatch_event
task: ffff88808d012300 task.stack: ffff88808d018000
RIP: 0010:hsr_check_carrier_and_operstate+0x3f/0x710 net/hsr/hsr_device.c:116
RSP: 0018:ffff88808d01fb78 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffff888057d62c00 RCX: 0000000000000001
RDX: 0000000000000002 RSI: 0000000000000004 RDI: ffff88809ee698a0
RBP: ffff888066127200 R08: 0000000000000000 R09: 0000000000000003
R10: 0000000000000000 R11: ffff88808d012300 R12: 0000000000000001
R13: ffff888066127200 R14: 0000000000000000 R15: 0000000000000004
FS:  0000000000000000(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1bbf292718 CR3: 000000009ce83000 CR4: 00000000003406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 hsr_netdev_notify+0x201/0x8b0 net/hsr/hsr_main.c:51
 notifier_call_chain+0x108/0x1a0 kernel/notifier.c:93
 call_netdevice_notifiers_info net/core/dev.c:1667 [inline]
 netdev_state_change net/core/dev.c:1314 [inline]
 netdev_state_change+0xca/0xf0 net/core/dev.c:1308
 linkwatch_do_dev+0x8a/0x100 net/core/link_watch.c:164
 __linkwatch_run_queue+0x260/0x480 net/core/link_watch.c:202
 linkwatch_event+0x3c/0x50 net/core/link_watch.c:237
 process_one_work+0x793/0x14a0 kernel/workqueue.c:2117
 worker_thread+0x5cc/0xff0 kernel/workqueue.c:2251
 kthread+0x30d/0x420 kernel/kthread.c:232
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:406
Code: 59 fa be 04 00 00 00 48 89 ef e8 0d b0 ff ff 49 89 c6 48 83 c0 10 48 89 c2 48 89 04 24 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 67 06 00 00 48 b8 00 00 00 00 00 fc ff df 49 
RIP: hsr_check_carrier_and_operstate+0x3f/0x710 net/hsr/hsr_device.c:116 RSP: ffff88808d01fb78
---[ end trace 10505aa7f6d3f97a ]---
----------------
Code disassembly (best guess):
   0:	59                   	pop    %rcx
   1:	fa                   	cli
   2:	be 04 00 00 00       	mov    $0x4,%esi
   7:	48 89 ef             	mov    %rbp,%rdi
   a:	e8 0d b0 ff ff       	callq  0xffffb01c
   f:	49 89 c6             	mov    %rax,%r14
  12:	48 83 c0 10          	add    $0x10,%rax
  16:	48 89 c2             	mov    %rax,%rdx
  19:	48 89 04 24          	mov    %rax,(%rsp)
  1d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  24:	fc ff df
  27:	48 c1 ea 03          	shr    $0x3,%rdx
* 2b:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1) <-- trapping instruction
  2f:	0f 85 67 06 00 00    	jne    0x69c
  35:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  3c:	fc ff df
  3f:	49                   	rex.WB