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
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: 7645 Comm: kworker/u4:6 Not tainted 4.20.0-rc1+ #321
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 aa 2e 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 aa 2e 00 e8 48
RSP: 0018:ffff8801826c70d0 EFLAGS: 00010006
RAX: dffffc0000000000 RBX: 0000001ffffffe00 RCX: ffffffff8150dfba
RDX: 00000003ffffffc0 RSI: ffffffff8150e037 RDI: 0000000000000007
RBP: ffff8801826c7150 R08: ffff880181da6240 R09: ffffed003b5e5b67
R10: ffffed003b5e5b67 R11: ffff8801daf2db3b R12: 0000000000000004
R13: 1ffff100304d8e1a R14: ffff8801826c7130 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f768d7591b0 CR3: 000000000946a000 CR4: 00000000001406e0
Call Trace:
 start_flush_work kernel/workqueue.c:2859 [inline]
 __flush_work+0x12f/0x9b0 kernel/workqueue.c:2916
 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.5+0xb0/0x160 net/core/net_namespace.c:153
 cleanup_net+0x555/0xb10 net/core/net_namespace.c:551
 process_one_work+0xc90/0x1c40 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 cfe3d260ae9017a0 ]---
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 aa 2e 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 aa 2e 00 e8 48
RSP: 0018:ffff8801826c70d0 EFLAGS: 00010006
RAX: dffffc0000000000 RBX: 0000001ffffffe00 RCX: ffffffff8150dfba
RDX: 00000003ffffffc0 RSI: ffffffff8150e037 RDI: 0000000000000007
RBP: ffff8801826c7150 R08: ffff880181da6240 R09: ffffed003b5e5b67
R10: ffffed003b5e5b67 R11: ffff8801daf2db3b R12: 0000000000000004
R13: 1ffff100304d8e1a R14: ffff8801826c7130 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f768d7591b0 CR3: 000000000946a000 CR4: 00000000001406e0