IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready
IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready
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: 21 Comm: kworker/u4:1 Not tainted 4.19.0-rc5-next-20180928+ #84
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: netns cleanup_net
RIP: 0010:get_work_pool+0x19f/0x260 kernel/workqueue.c:716
Code: 48 83 c4 60 5b 41 5c 41 5d 41 5e 5d c3 e8 89 ff 2d 00 48 81 e3 00 fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 <80> 3c 02 00 0f 85 9e 00 00 00 48 8b 1b eb 99 e8 5d ff 2d 00 e8 e8
RSP: 0018:ffff8801d942f0d0 EFLAGS: 00010006
RAX: dffffc0000000000 RBX: 0000001ffffffe00 RCX: ffffffff814f684a
RDX: 00000003ffffffc0 RSI: ffffffff814f68c7 RDI: 0000000000000007
RBP: ffff8801d942f150 R08: ffff8801d941e580 R09: ffffed003b177396
R10: ffffed003b177396 R11: ffff8801d8bb9cb7 R12: 0000000000000004
R13: 1ffff1003b285e1a R14: ffff8801d942f130 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000004dac7b CR3: 000000000926a000 CR4: 00000000001426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
bridge0: port 2(bridge_slave_1) entered blocking state
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 start_flush_work kernel/workqueue.c:2859 [inline]
 __flush_work+0x12f/0x9b0 kernel/workqueue.c:2916
bridge0: port 2(bridge_slave_1) entered forwarding state
bridge0: port 1(bridge_slave_0) entered blocking state
bridge0: port 1(bridge_slave_0) entered forwarding state
IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready
 flush_work+0x17/0x20 kernel/workqueue.c:2938
 xfrm_policy_fini+0xb9/0x560 net/xfrm/xfrm_policy.c:2881
 xfrm_net_exit+0x1d/0x70 net/xfrm/xfrm_policy.c:2942
 ops_exit_list.isra.7+0xb0/0x160 net/core/net_namespace.c:153
 cleanup_net+0x555/0xb10 net/core/net_namespace.c:551
 process_one_work+0xc8b/0x1b80 kernel/workqueue.c:2153
 worker_thread+0x17f/0x1390 kernel/workqueue.c:2296
 kthread+0x35a/0x440 kernel/kthread.c:246
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352
Modules linked in:
---[ end trace 28e992c07a6c3f94 ]---
RIP: 0010:get_work_pool+0x19f/0x260 kernel/workqueue.c:716
Code: 48 83 c4 60 5b 41 5c 41 5d 41 5e 5d c3 e8 89 ff 2d 00 48 81 e3 00 fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 <80> 3c 02 00 0f 85 9e 00 00 00 48 8b 1b eb 99 e8 5d ff 2d 00 e8 e8
RSP: 0018:ffff8801d942f0d0 EFLAGS: 00010006
RAX: dffffc0000000000 RBX: 0000001ffffffe00 RCX: ffffffff814f684a
RDX: 00000003ffffffc0 RSI: ffffffff814f68c7 RDI: 0000000000000007
RBP: ffff8801d942f150 R08: ffff8801d941e580 R09: ffffed003b177396
R10: ffffed003b177396 R11: ffff8801d8bb9cb7 R12: 0000000000000004
R13: 1ffff1003b285e1a R14: ffff8801d942f130 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000004dac7b CR3: 000000000926a000 CR4: 00000000001426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400