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: 1 PID: 384 Comm: kworker/u4:4 Not tainted 4.19.172-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 syzkaller/managers/linux-4-19/kernel/net/hsr/hsr_main.c:65
Code: e8 06 f8 7a f9 41 83 ff 04 75 a4 e8 8b f6 7a 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:ffff8880b4c5f540 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffff888094d59140 RCX: ffffffff87e7632a
RDX: 0000000000000002 RSI: ffffffff87e76335 RDI: 0000000000000005
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000004
R10: 0000000000000005 R11: 0000000000000000 R12: ffff8880a33df590
R13: dffffc0000000000 R14: dffffc0000000000 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f50e879b000 CR3: 00000000a176c000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 notifier_call_chain+0xc0/0x230 syzkaller/managers/linux-4-19/kernel/kernel/notifier.c:93
 call_netdevice_notifiers_info syzkaller/managers/linux-4-19/kernel/net/core/dev.c:1744 [inline]
 call_netdevice_notifiers+0x99/0x110 syzkaller/managers/linux-4-19/kernel/net/core/dev.c:1762
 __bond_release_one+0x11af/0x1630 syzkaller/managers/linux-4-19/kernel/drivers/net/bonding/bond_main.c:1982
 bond_slave_netdev_event syzkaller/managers/linux-4-19/kernel/drivers/net/bonding/bond_main.c:3154 [inline]
 bond_netdev_event+0xb61/0xe50 syzkaller/managers/linux-4-19/kernel/drivers/net/bonding/bond_main.c:3266
 notifier_call_chain+0xc0/0x230 syzkaller/managers/linux-4-19/kernel/kernel/notifier.c:93
 call_netdevice_notifiers syzkaller/managers/linux-4-19/kernel/net/core/dev.c:1762 [inline]
 rollback_registered_many+0x83e/0xe70 syzkaller/managers/linux-4-19/kernel/net/core/dev.c:8188
 unregister_netdevice_many.part.0+0x1a/0x300 syzkaller/managers/linux-4-19/kernel/net/core/dev.c:9316
 unregister_netdevice_many syzkaller/managers/linux-4-19/kernel/net/core/dev.c:9315 [inline]
 default_device_exit_batch+0x2fa/0x3c0 syzkaller/managers/linux-4-19/kernel/net/core/dev.c:9787
 ops_exit_list+0xf9/0x150 syzkaller/managers/linux-4-19/kernel/net/core/net_namespace.c:156
 cleanup_net+0x3b4/0x8b0 syzkaller/managers/linux-4-19/kernel/net/core/net_namespace.c:553
 process_one_work+0x864/0x1570 syzkaller/managers/linux-4-19/kernel/kernel/workqueue.c:2155
 worker_thread+0x64c/0x1130 syzkaller/managers/linux-4-19/kernel/kernel/workqueue.c:2298
 kthread+0x33f/0x460 syzkaller/managers/linux-4-19/kernel/kernel/kthread.c:259
 ret_from_fork+0x24/0x30 syzkaller/managers/linux-4-19/kernel/arch/x86/entry/entry_64.S:415
Modules linked in:
---[ end trace 181810338eedf0c2 ]---
RIP: 0010:hsr_netdev_notify+0x37f/0x9f0 syzkaller/managers/linux-4-19/kernel/net/hsr/hsr_main.c:65
Code: e8 06 f8 7a f9 41 83 ff 04 75 a4 e8 8b f6 7a 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:ffff8880b4c5f540 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffff888094d59140 RCX: ffffffff87e7632a
RDX: 0000000000000002 RSI: ffffffff87e76335 RDI: 0000000000000005
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000004
R10: 0000000000000005 R11: 0000000000000000 R12: ffff8880a33df590
R13: dffffc0000000000 R14: dffffc0000000000 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f50e879b000 CR3: 00000000a176c000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400