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: 26809 Comm: syz-executor.0 Not tainted 5.2.0-rc1+ #33
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__skb_unlink include/linux/skbuff.h:1994 [inline]
RIP: 0010:__skb_dequeue include/linux/skbuff.h:2010 [inline]
RIP: 0010:__skb_queue_purge include/linux/skbuff.h:2721 [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:ffff88808785f9d8 EFLAGS: 00010a07
RAX: ffffffffffe8ffff RBX: ffffe8ffffc71d70 RCX: 18e40c9ffffd2000
RDX: c72064ffffe8ffff RSI: ffffffff85957eaa RDI: c72064ffffe90007
RBP: ffff88808785fa38 R08: ffff8880a09085c0 R09: fffffbfff12a8ce1
R10: fffffbfff12a8ce0 R11: ffffffff89546703 R12: dffffc0000000000
R13: 0000000000000000 R14: ffffe8ffffc71d80 R15: ffffe8ffffc71d73
FS:  00007f17e1367700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe72b1f1028 CR3: 000000005d9bf000 CR4: 00000000001406f0
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:1013
 netdev_run_todo+0x48b/0x7c0 net/core/dev.c:9002
 rtnl_unlock+0xe/0x10 net/core/rtnetlink.c:116
 ip_tunnel_delete_nets+0x423/0x5f0 net/ipv4/ip_tunnel.c:1127
 ipip_exit_batch_net+0x23/0x30 net/ipv4/ipip.c:663
 ops_exit_list.isra.0+0xfc/0x150 net/core/net_namespace.c:157
 setup_net+0x400/0x740 net/core/net_namespace.c:333
 copy_net_ns+0x1df/0x340 net/core/net_namespace.c:439
 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:2692
 __do_sys_unshare kernel/fork.c:2760 [inline]
 __se_sys_unshare kernel/fork.c:2758 [inline]
 __x64_sys_unshare+0x31/0x40 kernel/fork.c:2758
 do_syscall_64+0xfd/0x680 arch/x86/entry/common.c:301
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x459279
Code: fd b7 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 cb b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f17e1366c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000459279
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000006c060000
RBP: 000000000075bfc0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f17e13676d4
R13: 00000000004c84b7 R14: 00000000004dec10 R15: 00000000ffffffff
Modules linked in:
---[ end trace 6c2c84b2d80e387e ]---
RIP: 0010:__skb_unlink include/linux/skbuff.h:1994 [inline]
RIP: 0010:__skb_dequeue include/linux/skbuff.h:2010 [inline]
RIP: 0010:__skb_queue_purge include/linux/skbuff.h:2721 [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:ffff88808785f9d8 EFLAGS: 00010a07
RAX: ffffffffffe8ffff RBX: ffffe8ffffc71d70 RCX: 18e40c9ffffd2000
RDX: c72064ffffe8ffff RSI: ffffffff85957eaa RDI: c72064ffffe90007
RBP: ffff88808785fa38 R08: ffff8880a09085c0 R09: fffffbfff12a8ce1
R10: fffffbfff12a8ce0 R11: ffffffff89546703 R12: dffffc0000000000
R13: 0000000000000000 R14: ffffe8ffffc71d80 R15: ffffe8ffffc71d73
FS:  00007f17e1367700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe72b1f1028 CR3: 000000005d9bf000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400