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: 21810 Comm: kworker/u4:10 Not tainted 5.0.0-rc8+ #89
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: netns cleanup_net
RIP: 0010:__skb_unlink include/linux/skbuff.h:1924 [inline]
RIP: 0010:__skb_dequeue include/linux/skbuff.h:1941 [inline]
RIP: 0010:__skb_queue_purge include/linux/skbuff.h:2655 [inline]
RIP: 0010:gro_cells_destroy net/core/gro_cells.c:89 [inline]
RIP: 0010:gro_cells_destroy+0x19d/0x360 net/core/gro_cells.c:78
Code: 03 42 80 3c 20 00 0f 85 53 01 00 00 48 8d 7a 08 49 8b 47 08 49 c7 07 00 00 00 00 48 89 f9 49 c7 47 08 00 00 00 00 48 c1 e9 03 <42> 80 3c 21 00 0f 85 10 01 00 00 48 89 c1 48 89 42 08 48 c1 e9 03
RSP: 0018:ffff8880548df9a8 EFLAGS: 00010202
RAX: 0000000000000000 RBX: ffffe8ffffd6b548 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffffffff8582a9ea RDI: 0000000000000008
RBP: ffff8880548dfa08 R08: ffff888054b6c0c0 R09: fffffbfff12633fd
R10: fffffbfff12633fc R11: ffffffff89319fe3 R12: dffffc0000000000
R13: 0000000000000001 R14: ffffe8ffffd6b558 R15: ffffe8ffffd6b740
FS:  0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000001f75040 CR3: 000000008c8ef000 CR4: 00000000001426f0
Call Trace:
 ip_tunnel_dev_free+0x19/0x60 net/ipv4/ip_tunnel.c:966
 netdev_run_todo+0x51c/0x7d0 net/core/dev.c:8888
 rtnl_unlock+0xe/0x10 net/core/rtnetlink.c:117
 ip_tunnel_delete_nets+0x423/0x5f0 net/ipv4/ip_tunnel.c:1080
 erspan_exit_batch_net+0x23/0x30 net/ipv4/ip_gre.c:1669
 ops_exit_list.isra.0+0x105/0x160 net/core/net_namespace.c:156
 cleanup_net+0x3fb/0x960 net/core/net_namespace.c:551
 process_one_work+0x98e/0x1790 kernel/workqueue.c:2173
 worker_thread+0x98/0xe40 kernel/workqueue.c:2319
 kthread+0x357/0x430 kernel/kthread.c:246
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352
Modules linked in:
kobject: 'tunl0' (000000004586036e): kobject_cleanup, parent           (null)
IPVS: ftp: loaded support on port[0] = 21
kobject: 'tunl0' (000000004586036e): calling ktype release
kobject: 'tunl0': free name
kobject: 'rx-0' (0000000039227502): kobject_cleanup, parent 0000000084682ec4
kobject: 'rx-0' (0000000039227502): auto cleanup 'remove' event
kobject: 'rx-0' (0000000039227502): kobject_uevent_env
kobject: 'rx-0' (0000000039227502): fill_kobj_path: path = '/devices/virtual/net/lo/queues/rx-0'
kobject: 'rx-0' (0000000039227502): auto cleanup kobject_del
kobject: 'rx-0' (0000000039227502): calling ktype release
kobject: 'loop1' (000000006fbf8e11): kobject_uevent_env
kobject: 'rx-0': free name
kobject: 'loop1' (000000006fbf8e11): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'tx-0' (000000009b056530): kobject_cleanup, parent 0000000084682ec4
kobject: 'tx-0' (000000009b056530): auto cleanup 'remove' event
kobject: 'tx-0' (000000009b056530): kobject_uevent_env
kobject: 'tx-0' (000000009b056530): fill_kobj_path: path = '/devices/virtual/net/lo/queues/tx-0'
kobject: 'loop4' (00000000ff6725a0): kobject_uevent_env
kobject: 'tx-0' (000000009b056530): auto cleanup kobject_del
kobject: 'loop4' (00000000ff6725a0): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'tx-0' (000000009b056530): calling ktype release
kobject: 'tx-0': free name
kobject: 'queues' (0000000084682ec4): kobject_cleanup, parent           (null)
kobject: 'queues' (0000000084682ec4): calling ktype release
kobject: 'queues' (0000000084682ec4): kset_release
kobject: 'queues': free name
kobject: 'lo' (0000000050e2c81c): kobject_uevent_env
kobject: 'lo' (0000000050e2c81c): fill_kobj_path: path = '/devices/virtual/net/lo'
---[ end trace e831ad4450c370b4 ]---
RIP: 0010:__skb_unlink include/linux/skbuff.h:1924 [inline]
RIP: 0010:__skb_dequeue include/linux/skbuff.h:1941 [inline]
RIP: 0010:__skb_queue_purge include/linux/skbuff.h:2655 [inline]
RIP: 0010:gro_cells_destroy net/core/gro_cells.c:89 [inline]
RIP: 0010:gro_cells_destroy+0x19d/0x360 net/core/gro_cells.c:78
kobject: 'lo' (00000000228297c1): kobject_add_internal: parent: 'net', set: 'devices'
Code: 03 42 80 3c 20 00 0f 85 53 01 00 00 48 8d 7a 08 49 8b 47 08 49 c7 07 00 00 00 00 48 89 f9 49 c7 47 08 00 00 00 00 48 c1 e9 03 <42> 80 3c 21 00 0f 85 10 01 00 00 48 89 c1 48 89 42 08 48 c1 e9 03
RSP: 0018:ffff8880548df9a8 EFLAGS: 00010202
RAX: 0000000000000000 RBX: ffffe8ffffd6b548 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffffffff8582a9ea RDI: 0000000000000008
RBP: ffff8880548dfa08 R08: ffff888054b6c0c0 R09: fffffbfff12633fd
R10: fffffbfff12633fc R11: ffffffff89319fe3 R12: dffffc0000000000
R13: 0000000000000001 R14: ffffe8ffffd6b558 R15: ffffe8ffffd6b740
FS:  0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
kobject: 'lo' (00000000228297c1): kobject_uevent_env
CR2: 0000000000625208 CR3: 00000000956e8000 CR4: 00000000001426f0
kobject: 'lo' (00000000228297c1): fill_kobj_path: path = '/devices/virtual/net/lo'