IPv6: ADDRCONF(NETDEV_UP): bond1: link is not ready
8021q: adding VLAN 0 to HW filter on device bond1
bond1: Enslaving veth79 as a backup interface with a down link
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 1 PID: 23 Comm: kworker/1:1 Not tainted 4.14.184-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events linkwatch_event
task: ffff8880a9ea6600 task.stack: ffff8880a9eb8000
RIP: 0010:hsr_check_carrier_and_operstate+0x3b/0x5d0 net/hsr/hsr_device.c:116
RSP: 0018:ffff8880a9ebfb80 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffff888052e76980 RCX: 1ffffffff0fe794c
RDX: 0000000000000002 RSI: 0000000000000004 RDI: ffff888055f93fa0
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000003
R10: ffff8880a9ea6f00 R11: ffff8880a9ea6600 R12: 0000000000000001
R13: 0000000000000010 R14: ffffffff8819e2e0 R15: 0000000000000004
FS:  0000000000000000(0000) GS:ffff8880aed00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffccd183f68 CR3: 0000000007a6a000 CR4: 00000000001406e0
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+0x107/0x1a0 kernel/notifier.c:93
 netdev_state_change net/core/dev.c:1318 [inline]
 netdev_state_change+0xaf/0xd0 net/core/dev.c:1312
 linkwatch_do_dev+0x89/0xe0 net/core/link_watch.c:164
 __linkwatch_run_queue+0x26a/0x490 net/core/link_watch.c:202
 linkwatch_event+0x3c/0x50 net/core/link_watch.c:237
 process_one_work+0x7c0/0x14c0 kernel/workqueue.c:2116
 worker_thread+0x5d7/0x1080 kernel/workqueue.c:2250
 kthread+0x30d/0x420 kernel/kthread.c:232
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404
Code: 08 e8 4a 8c 24 fb 48 89 ef be 04 00 00 00 e8 ed ae ff ff 4c 8d 68 10 48 89 c5 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 <80> 3c 02 00 0f 85 00 05 00 00 48 b8 00 00 00 00 00 fc ff df 48 
RIP: hsr_check_carrier_and_operstate+0x3b/0x5d0 net/hsr/hsr_device.c:116 RSP: ffff8880a9ebfb80
---[ end trace acfa5be07c3879af ]---