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
kobject: 'loop3' (00000000b2df59ad): kobject_uevent_env
CPU: 1 PID: 2476 Comm: kworker/u4:3 Not tainted 5.0.0-rc6+ #85
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:ffff8880a365f9c8 EFLAGS: 00010206
RAX: 0000000000000000 RBX: ffffe8ffffd6d360 RCX: 001ffff1101419c9
RDX: 00ffff8880a0ce41 RSI: ffffffff8582a9ea RDI: 00ffff8880a0ce49
RBP: ffff8880a365fa28 R08: ffff8880a3646300 R09: fffffbfff126339d
R10: fffffbfff126339c R11: ffffffff89319ce3 R12: dffffc0000000000
R13: 0000000000000001 R14: ffffe8ffffd6d370 R15: ffffe8ffffd6d591
FS:  0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007efde20aa028 CR3: 000000009b497000 CR4: 00000000001406e0
Call Trace:
kobject: 'loop3' (00000000b2df59ad): fill_kobj_path: path = '/devices/virtual/block/loop3'
 ip6gre_dev_free+0x19/0x60 net/ipv6/ip6_gre.c:1384
 netdev_run_todo+0x51c/0x7d0 net/core/dev.c:8888
kobject: 'loop2' (00000000d67bf616): kobject_uevent_env
kobject: 'loop2' (00000000d67bf616): fill_kobj_path: path = '/devices/virtual/block/loop2'
 rtnl_unlock+0xe/0x10 net/core/rtnetlink.c:117
 ip6gre_exit_batch_net+0x53a/0x750 net/ipv6/ip6_gre.c:1603
 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:
---[ end trace f64de441e4aa7fba ]---
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
kobject: 'loop3' (00000000b2df59ad): kobject_uevent_env
kobject: 'loop3' (00000000b2df59ad): fill_kobj_path: path = '/devices/virtual/block/loop3'
kobject: 'loop4' (00000000fb1d9be4): kobject_uevent_env
RSP: 0018:ffff8880a365f9c8 EFLAGS: 00010206
kobject: 'loop4' (00000000fb1d9be4): fill_kobj_path: path = '/devices/virtual/block/loop4'
RAX: 0000000000000000 RBX: ffffe8ffffd6d360 RCX: 001ffff1101419c9
kobject: 'loop2' (00000000d67bf616): kobject_uevent_env
RDX: 00ffff8880a0ce41 RSI: ffffffff8582a9ea RDI: 00ffff8880a0ce49
kobject: 'loop2' (00000000d67bf616): fill_kobj_path: path = '/devices/virtual/block/loop2'
RBP: ffff8880a365fa28 R08: ffff8880a3646300 R09: fffffbfff126339d
kobject: 'loop0' (000000009bfb1cf9): kobject_uevent_env
R10: fffffbfff126339c R11: ffffffff89319ce3 R12: dffffc0000000000
kobject: 'loop0' (000000009bfb1cf9): fill_kobj_path: path = '/devices/virtual/block/loop0'
R13: 0000000000000001 R14: ffffe8ffffd6d370 R15: ffffe8ffffd6d591
kobject: 'loop2' (00000000d67bf616): kobject_uevent_env
FS:  0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
kobject: 'loop2' (00000000d67bf616): fill_kobj_path: path = '/devices/virtual/block/loop2'
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
kobject: 'loop5' (00000000f6be725a): kobject_uevent_env
CR2: 00007ffdac393659 CR3: 0000000091309000 CR4: 00000000001406e0
kobject: 'loop5' (00000000f6be725a): fill_kobj_path: path = '/devices/virtual/block/loop5'