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: 7 Comm: kworker/u4:0 Not tainted 5.2.0-rc1+ #6 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: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:ffff8880a98a79d0 EFLAGS: 00010a07 RAX: 0000ffffffffffff RBX: ffffe8ffffd747c0 RCX: 1d1ffffae9b52000 RDX: e8ffffd74da8ffff RSI: ffffffff8595847a RDI: e8ffffd74da90007 RBP: ffff8880a98a7a30 R08: ffff8880a98981c0 R09: fffffbfff12a8c19 R10: fffffbfff12a8c18 R11: ffffffff895460c3 R12: dffffc0000000000 R13: 0000000000000001 R14: ffffe8ffffd747d0 R15: ffffe8ffffd747c6 FS: 0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffc4c5cd0a0 CR3: 000000008ceb6000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ip6_dev_free+0x19/0x60 net/ipv6/ip6_tunnel.c:254 netdev_run_todo+0x48b/0x7c0 net/core/dev.c:9002 rtnl_unlock+0xe/0x10 net/core/rtnetlink.c:116 ip6_tnl_exit_batch_net+0x511/0x6f0 net/ipv6/ip6_tunnel.c:2275 ops_exit_list.isra.0+0xfc/0x150 net/core/net_namespace.c:157 cleanup_net+0x3fb/0x960 net/core/net_namespace.c:553 process_one_work+0x989/0x1790 kernel/workqueue.c:2269 worker_thread+0x98/0xe40 kernel/workqueue.c:2415 kthread+0x354/0x420 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 Modules linked in: ---[ end trace 969675982a4abf80 ]--- 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:ffff8880a98a79d0 EFLAGS: 00010a07 RAX: 0000ffffffffffff RBX: ffffe8ffffd747c0 RCX: 1d1ffffae9b52000 RDX: e8ffffd74da8ffff RSI: ffffffff8595847a RDI: e8ffffd74da90007 RBP: ffff8880a98a7a30 R08: ffff8880a98981c0 R09: fffffbfff12a8c19 R10: fffffbfff12a8c18 R11: ffffffff895460c3 R12: dffffc0000000000 R13: 0000000000000001 R14: ffffe8ffffd747d0 R15: ffffe8ffffd747c6 FS: 0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020200000 CR3: 0000000099239000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400