bond0 (unregistering): Releasing backup interface bond_slave_1
device bond_slave_1 left promiscuous mode
bond0 (unregistering): Releasing backup interface bond_slave_0
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: 7565 Comm: kworker/u4:6 Not tainted 4.14.172-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: netns cleanup_net
task: ffff8880563d0380 task.stack: ffff8880563d8000
RIP: 0010:hsr_netdev_notify+0x456/0x8c0 net/hsr/hsr_main.c:64
RSP: 0018:ffff8880563df788 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffffffff1027974
RDX: 0000000000000002 RSI: ffffffff886e4120 RDI: ffff888098ce0f20
RBP: ffff88805a968840 R08: 0000000000000001 R09: 0000000000000004
R10: ffff8880563d0ca0 R11: ffff8880563d0380 R12: ffff88804aaeec90
R13: ffff88804aaeec80 R14: 0000000000000001 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffaa0757000 CR3: 0000000099d12000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 notifier_call_chain+0x107/0x1a0 kernel/notifier.c:93
 call_netdevice_notifiers+0x5e/0x70 net/core/dev.c:1687
 __bond_release_one+0xf02/0x1390 drivers/net/bonding/bond_main.c:1937
 bond_slave_netdev_event drivers/net/bonding/bond_main.c:3093 [inline]
 bond_netdev_event+0x784/0x8c0 drivers/net/bonding/bond_main.c:3191
 notifier_call_chain+0x107/0x1a0 kernel/notifier.c:93
 call_netdevice_notifiers net/core/dev.c:1687 [inline]
 rollback_registered_many+0x694/0xa70 net/core/dev.c:7205
 unregister_netdevice_many.part.0+0x16/0x1d0 net/core/dev.c:8278
 unregister_netdevice_many net/core/dev.c:8277 [inline]
 default_device_exit_batch+0x2dd/0x380 net/core/dev.c:8739
 ops_exit_list.isra.0+0xef/0x140 net/core/net_namespace.c:145
 cleanup_net+0x3bb/0x820 net/core/net_namespace.c:484
 process_one_work+0x813/0x1540 kernel/workqueue.c:2114
 worker_thread+0x5d1/0x1070 kernel/workqueue.c:2248
 kthread+0x30d/0x420 kernel/kthread.c:232
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404
Code: 03 0f 8e 5d 03 00 00 83 7b 20 04 75 b6 e8 03 d0 22 fb 48 8d 43 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 16 04 00 00 48 b8 00 00 00 00 00 fc ff df 4c 
RIP: hsr_netdev_notify+0x456/0x8c0 net/hsr/hsr_main.c:64 RSP: ffff8880563df788
---[ end trace 3550bf0de4bf0f39 ]---