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: 12581 Comm: syz-executor.0 Not tainted 5.0.0+ #137
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__skb_unlink include/linux/skbuff.h:1983 [inline]
RIP: 0010:__skb_dequeue include/linux/skbuff.h:1999 [inline]
RIP: 0010:__skb_queue_purge include/linux/skbuff.h:2710 [inline]
RIP: 0010:gro_cells_destroy net/core/gro_cells.c:103 [inline]
RIP: 0010:gro_cells_destroy+0x19d/0x360 net/core/gro_cells.c:92
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:ffff888063a079d8 EFLAGS: 00010a06
RAX: ffffffe8ffffc9a4 RBX: ffffe8ffffc9a3c0 RCX: 179ffffd1ffff935
RDX: bcffffe8ffffc9a3 RSI: ffffffff858aab7a RDI: bcffffe8ffffc9ab
RBP: ffff888063a07a38 R08: ffff888069b942c0 R09: fffffbfff126525d
R10: fffffbfff126525c R11: ffffffff893292e3 R12: dffffc0000000000
R13: 0000000000000000 R14: ffffe8ffffc9a3d0 R15: ffffe8ffffc9a3c1
FS:  00007f0dbcf69700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f951e6b8000 CR3: 0000000096869000 CR4: 00000000001406e0
Call Trace:
 ip_tunnel_dev_free+0x19/0x60 net/ipv4/ip_tunnel.c:1013
 netdev_run_todo+0x51c/0x7d0 net/core/dev.c:8970
 rtnl_unlock+0xe/0x10 net/core/rtnetlink.c:116
 ip_tunnel_delete_nets+0x423/0x5f0 net/ipv4/ip_tunnel.c:1127
 erspan_exit_batch_net+0x23/0x30 net/ipv4/ip_gre.c:1595
 ops_exit_list.isra.0+0x105/0x160 net/core/net_namespace.c:156
 setup_net+0x3f2/0x730 net/core/net_namespace.c:331
 copy_net_ns+0x1d9/0x340 net/core/net_namespace.c:437
 create_new_namespaces+0x400/0x7b0 kernel/nsproxy.c:107
 unshare_nsproxy_namespaces+0xc2/0x200 kernel/nsproxy.c:206
 ksys_unshare+0x440/0x980 kernel/fork.c:2549
 __do_sys_unshare kernel/fork.c:2617 [inline]
 __se_sys_unshare kernel/fork.c:2615 [inline]
 __x64_sys_unshare+0x31/0x40 kernel/fork.c:2615
 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x458209
Code: ad b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f0dbcf68c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000458209
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000040000000
RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f0dbcf696d4
R13: 00000000004c6fa2 R14: 00000000004dc7a8 R15: 00000000ffffffff
Modules linked in:
---[ end trace 8aa4d5b796894c39 ]---
RIP: 0010:__skb_unlink include/linux/skbuff.h:1983 [inline]
RIP: 0010:__skb_dequeue include/linux/skbuff.h:1999 [inline]
RIP: 0010:__skb_queue_purge include/linux/skbuff.h:2710 [inline]
RIP: 0010:gro_cells_destroy net/core/gro_cells.c:103 [inline]
RIP: 0010:gro_cells_destroy+0x19d/0x360 net/core/gro_cells.c:92
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:ffff888063a079d8 EFLAGS: 00010a06
RAX: ffffffe8ffffc9a4 RBX: ffffe8ffffc9a3c0 RCX: 179ffffd1ffff935
RDX: bcffffe8ffffc9a3 RSI: ffffffff858aab7a RDI: bcffffe8ffffc9ab
RBP: ffff888063a07a38 R08: ffff888069b942c0 R09: fffffbfff126525d
R10: fffffbfff126525c R11: ffffffff893292e3 R12: dffffc0000000000
R13: 0000000000000000 R14: ffffe8ffffc9a3d0 R15: ffffe8ffffc9a3c1
FS:  00007f0dbcf69700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f951e6b8000 CR3: 0000000096869000 CR4: 00000000001406e0