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: 8091 Comm: kworker/u4:5 Not tainted 5.0.0-rc4+ #36
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:1929 [inline]
RIP: 0010:__skb_dequeue include/linux/skbuff.h:1946 [inline]
RIP: 0010:__skb_queue_purge include/linux/skbuff.h:2660 [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:ffff8880698274d8 EFLAGS: 00010a02
RAX: ffffffe8ffffc6ac RBX: ffffe8ffffc6aba0 RCX: 139ffffd1ffff8d6
RDX: 9cffffe8ffffc6ab RSI: ffffffff863313aa RDI: 9cffffe8ffffc6b3
RBP: ffff888069827538 R08: ffff8880981da380 R09: fffffbfff146226d
R10: fffffbfff146226c R11: ffffffff8a311363 R12: dffffc0000000000
R13: 0000000000000000 R14: ffffe8ffffc6abb0 R15: ffffe8ffffc6aba1
FS:  0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000004e4480 CR3: 000000009ab07000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 ip6gre_dev_free+0x19/0x60 net/ipv6/ip6_gre.c:1384
 netdev_run_todo+0x647/0xae0 net/core/dev.c:8888
 rtnl_unlock+0xe/0x10 net/core/rtnetlink.c:117
 ip6gre_exit_batch_net+0x5ce/0x7f0 net/ipv6/ip6_gre.c:1603
 ops_exit_list.isra.0+0x105/0x160 net/core/net_namespace.c:156
 cleanup_net+0x51d/0xb10 net/core/net_namespace.c:551
 process_one_work+0xd0c/0x1ce0 kernel/workqueue.c:2153
 worker_thread+0x143/0x14a0 kernel/workqueue.c:2296
 kthread+0x357/0x430 kernel/kthread.c:246
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352
Modules linked in:
kobject: 'loop5' (000000009cd4dd2f): kobject_uevent_env
kobject: 'loop5' (000000009cd4dd2f): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop0' (0000000003db2d3d): kobject_uevent_env
kobject: 'loop0' (0000000003db2d3d): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop2' (000000006d95baa8): kobject_uevent_env
kobject: 'loop2' (000000006d95baa8): fill_kobj_path: path = '/devices/virtual/block/loop2'
kobject: 'loop3' (00000000e91b520b): kobject_uevent_env
kobject: 'loop3' (00000000e91b520b): fill_kobj_path: path = '/devices/virtual/block/loop3'
kobject: 'loop1' (000000005955eefe): kobject_uevent_env
kobject: 'loop1' (000000005955eefe): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'loop5' (000000009cd4dd2f): kobject_uevent_env
kobject: 'loop5' (000000009cd4dd2f): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop0' (0000000003db2d3d): kobject_uevent_env
kobject: 'loop0' (0000000003db2d3d): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop3' (00000000e91b520b): kobject_uevent_env
---[ end trace 4924a7aece5d591a ]---
RIP: 0010:__skb_unlink include/linux/skbuff.h:1929 [inline]
RIP: 0010:__skb_dequeue include/linux/skbuff.h:1946 [inline]
RIP: 0010:__skb_queue_purge include/linux/skbuff.h:2660 [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: 'loop3' (00000000e91b520b): fill_kobj_path: path = '/devices/virtual/block/loop3'
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
kobject: 'loop5' (000000009cd4dd2f): kobject_uevent_env
kobject: 'loop5' (000000009cd4dd2f): fill_kobj_path: path = '/devices/virtual/block/loop5'
RSP: 0018:ffff8880698274d8 EFLAGS: 00010a02
kobject: 'loop1' (000000005955eefe): kobject_uevent_env
kobject: 'loop1' (000000005955eefe): fill_kobj_path: path = '/devices/virtual/block/loop1'
RAX: ffffffe8ffffc6ac RBX: ffffe8ffffc6aba0 RCX: 139ffffd1ffff8d6
kobject: 'loop2' (000000006d95baa8): kobject_uevent_env
kobject: 'loop2' (000000006d95baa8): fill_kobj_path: path = '/devices/virtual/block/loop2'
RDX: 9cffffe8ffffc6ab RSI: ffffffff863313aa RDI: 9cffffe8ffffc6b3
RBP: ffff888069827538 R08: ffff8880981da380 R09: fffffbfff146226d
kobject: 'loop4' (0000000024037d71): kobject_uevent_env
kobject: 'loop4' (0000000024037d71): fill_kobj_path: path = '/devices/virtual/block/loop4'
R10: fffffbfff146226c R11: ffffffff8a311363 R12: dffffc0000000000
R13: 0000000000000000 R14: ffffe8ffffc6abb0 R15: ffffe8ffffc6aba1
kobject: 'loop5' (000000009cd4dd2f): kobject_uevent_env
kobject: 'loop5' (000000009cd4dd2f): fill_kobj_path: path = '/devices/virtual/block/loop5'
FS:  0000000000000000(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
kobject: 'loop0' (0000000003db2d3d): kobject_uevent_env
kobject: 'loop0' (0000000003db2d3d): fill_kobj_path: path = '/devices/virtual/block/loop0'
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b33422000 CR3: 000000005da9f000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
kobject: 'loop2' (000000006d95baa8): kobject_uevent_env
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
kobject: 'loop2' (000000006d95baa8): fill_kobj_path: path = '/devices/virtual/block/loop2'