kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
netlink: 8 bytes leftover after parsing attributes in process `syz-executor2'.
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 24733 Comm: kworker/u4:11 Not tainted 5.0.0-rc3+ #33
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:ffff88808f6ff4b0 EFLAGS: 00010202
RAX: 0000000000000000 RBX: ffffe8ffffc85290 RCX: 001ffffffffffffe
RDX: 00ffffffffffffe8 RSI: ffffffff8632439a RDI: 00fffffffffffff0
RBP: ffff88808f6ff510 R08: ffff888088006080 R09: fffffbfff1461c79
R10: fffffbfff1461c78 R11: ffffffff8a30e3c3 R12: dffffc0000000000
R13: 0000000000000000 R14: ffffe8ffffc852a0 R15: ffffe8ffffc8529d
FS:  0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000070a088 CR3: 000000005c9dd000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 ip_tunnel_dev_free+0x19/0x60 net/ipv4/ip_tunnel.c:960
 netdev_run_todo+0x647/0xae0 net/core/dev.c:8885
 rtnl_unlock+0xe/0x10 net/core/rtnetlink.c:117
 ip_tunnel_delete_nets+0x4df/0x6d0 net/ipv4/ip_tunnel.c:1074
 vti_exit_batch_net+0x23/0x30 net/ipv4/ip_vti.c:454
 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: 'loop4' (00000000e85fde8a): kobject_uevent_env
kobject: 'loop4' (00000000e85fde8a): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'loop3' (000000004b7bd5ce): kobject_uevent_env
kobject: 'loop3' (000000004b7bd5ce): fill_kobj_path: path = '/devices/virtual/block/loop3'
kobject: 'loop1' (00000000d1397bab): kobject_uevent_env
kobject: 'loop1' (00000000d1397bab): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'loop0' (00000000839a08b9): kobject_uevent_env
kobject: 'loop0' (00000000839a08b9): fill_kobj_path: path = '/devices/virtual/block/loop0'
---[ end trace fc2b5f8eebd4bb3e ]---
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: 'nlmon0' (00000000d3962ed1): kobject_cleanup, parent           (null)
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: 'nlmon0' (00000000d3962ed1): calling ktype release
kobject: 'loop5' (000000007e4c8a55): kobject_uevent_env
kobject: 'loop5' (000000007e4c8a55): fill_kobj_path: path = '/devices/virtual/block/loop5'
RSP: 0018:ffff88808f6ff4b0 EFLAGS: 00010202
kobject: 'nlmon0': free name
RAX: 0000000000000000 RBX: ffffe8ffffc85290 RCX: 001ffffffffffffe
RDX: 00ffffffffffffe8 RSI: ffffffff8632439a RDI: 00fffffffffffff0
RBP: ffff88808f6ff510 R08: ffff888088006080 R09: fffffbfff1461c79
R10: fffffbfff1461c78 R11: ffffffff8a30e3c3 R12: dffffc0000000000
R13: 0000000000000000 R14: ffffe8ffffc852a0 R15: ffffe8ffffc8529d
kobject: 'loop2' (00000000dca174cc): kobject_uevent_env
kobject: 'loop2' (00000000dca174cc): fill_kobj_path: path = '/devices/virtual/block/loop2'
FS:  0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
kobject: 'loop3' (000000004b7bd5ce): kobject_uevent_env
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
kobject: 'loop3' (000000004b7bd5ce): fill_kobj_path: path = '/devices/virtual/block/loop3'
CR2: 0000000020000000 CR3: 000000006a467000 CR4: 00000000001406e0
kobject: 'loop4' (00000000e85fde8a): kobject_uevent_env
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400