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
CPU: 0 PID: 15145 Comm: kworker/u4:9 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: netns cleanup_net
RIP: 0010:hsr_netdev_notify+0x37f/0x9f0 net/hsr/hsr_main.c:65
Code: e8 66 05 78 f9 41 83 ff 04 75 a4 e8 eb 03 78 f9 48 8d 45 10 48 89 c2 48 89 44 24 10 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 fe 05 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b
RSP: 0018:ffff888094af7540 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffff88809f089300 RCX: ffffffff87ea817a
RDX: 0000000000000002 RSI: ffffffff87ea8185 RDI: 0000000000000005
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000004
R10: 0000000000000005 R11: 0000000000000000 R12: ffff888047363050
R13: dffffc0000000000 R14: dffffc0000000000 R15: 0000000000000002
FS:  0000000000000000(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c029e262d8 CR3: 0000000096ce9000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 notifier_call_chain+0xc0/0x230 kernel/notifier.c:93
 call_netdevice_notifiers_info net/core/dev.c:1744 [inline]
 call_netdevice_notifiers+0x99/0x110 net/core/dev.c:1762
 __bond_release_one+0x11a2/0x1620 drivers/net/bonding/bond_main.c:1983
 bond_slave_netdev_event drivers/net/bonding/bond_main.c:3155 [inline]
 bond_netdev_event+0xb61/0xe50 drivers/net/bonding/bond_main.c:3267
 notifier_call_chain+0xc0/0x230 kernel/notifier.c:93
 call_netdevice_notifiers net/core/dev.c:1762 [inline]
 rollback_registered_many+0x83e/0xe70 net/core/dev.c:8196
 unregister_netdevice_many.part.0+0x1a/0x300 net/core/dev.c:9324
 unregister_netdevice_many net/core/dev.c:9323 [inline]
 default_device_exit_batch+0x2fa/0x3c0 net/core/dev.c:9795
 ops_exit_list+0xf9/0x150 net/core/net_namespace.c:156
 cleanup_net+0x3b4/0x8b0 net/core/net_namespace.c:554
 process_one_work+0x864/0x1570 kernel/workqueue.c:2153
 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296
 kthread+0x33f/0x460 kernel/kthread.c:259
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
Modules linked in:
---[ end trace a54f8b088585f460 ]---
RIP: 0010:hsr_netdev_notify+0x37f/0x9f0 net/hsr/hsr_main.c:65
Code: e8 66 05 78 f9 41 83 ff 04 75 a4 e8 eb 03 78 f9 48 8d 45 10 48 89 c2 48 89 44 24 10 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 fe 05 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b
RSP: 0018:ffff888094af7540 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffff88809f089300 RCX: ffffffff87ea817a
RDX: 0000000000000002 RSI: ffffffff87ea8185 RDI: 0000000000000005
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000004
R10: 0000000000000005 R11: 0000000000000000 R12: ffff888047363050
R13: dffffc0000000000 R14: dffffc0000000000 R15: 0000000000000002
FS:  0000000000000000(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c029e262d8 CR3: 0000000096ce9000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	e8 66 05 78 f9       	callq  0xf978056b
   5:	41 83 ff 04          	cmp    $0x4,%r15d
   9:	75 a4                	jne    0xffffffaf
   b:	e8 eb 03 78 f9       	callq  0xf97803fb
  10:	48 8d 45 10          	lea    0x10(%rbp),%rax
  14:	48 89 c2             	mov    %rax,%rdx
  17:	48 89 44 24 10       	mov    %rax,0x10(%rsp)
  1c:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  23:	fc ff df
  26:	48 c1 ea 03          	shr    $0x3,%rdx
* 2a:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1) <-- trapping instruction
  2e:	0f 85 fe 05 00 00    	jne    0x632
  34:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  3b:	fc ff df
  3e:	4c                   	rex.WR
  3f:	8b                   	.byte 0x8b