kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 0 PID: 44 Comm: kworker/u4:2 Not tainted 4.16.0+ #2
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: netns cleanup_net
RIP: 0010:virt_to_head_page include/linux/mm.h:624 [inline]
RIP: 0010:qlink_to_cache mm/kasan/quarantine.c:127 [inline]
RIP: 0010:qlist_free_all+0x12b/0x160 mm/kasan/quarantine.c:163
RSP: 0018:ffff8801d9946ce8 EFLAGS: 00010207
RAX: dead4ead00000000 RBX: 0000000000000282 RCX: ffffea0000000000
RDX: 037aa11ab4000000 RSI: ffff8801d9950c58 RDI: 0000000000000282
RBP: ffff8801d9946d20 R08: ffff8801d9950bb8 R09: 0000000000000006
R10: ffff8801d9950380 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: dead4ead00000000 R15: ffffffff88b18760
FS:  0000000000000000(0000) GS:ffff8801db000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000001ca2fd0 CR3: 000000018eced000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 quarantine_reduce+0x141/0x170 mm/kasan/quarantine.c:259
 kasan_kmalloc+0x99/0xe0 mm/kasan/kasan.c:538
 kasan_slab_alloc+0x12/0x20 mm/kasan/kasan.c:490
 slab_post_alloc_hook mm/slab.h:444 [inline]
 slab_alloc mm/slab.c:3392 [inline]
 kmem_cache_alloc_trace+0x13b/0x780 mm/slab.c:3618
 kmalloc include/linux/slab.h:512 [inline]
 netdevice_queue_work drivers/infiniband/core/roce_gid_mgmt.c:556 [inline]
 netdevice_event+0x32e/0xe00 drivers/infiniband/core/roce_gid_mgmt.c:655
 notifier_call_chain+0x178/0x380 kernel/notifier.c:93
 __raw_notifier_call_chain kernel/notifier.c:394 [inline]
 raw_notifier_call_chain+0x2d/0x40 kernel/notifier.c:401
 call_netdevice_notifiers_info+0x3f/0x90 net/core/dev.c:1734
 call_netdevice_notifiers net/core/dev.c:1752 [inline]
 rollback_registered_many+0x945/0xed0 net/core/dev.c:7436
 unregister_netdevice_many+0xf3/0x4c0 net/core/dev.c:8539
 ip_tunnel_delete_nets+0x4bd/0x6a0 net/ipv4/ip_tunnel.c:1073
 ipgre_tap_exit_batch_net+0x22/0x30 net/ipv4/ip_gre.c:1628
 ops_exit_list.isra.7+0x105/0x160 net/core/net_namespace.c:155
 cleanup_net+0x51d/0xb20 net/core/net_namespace.c:523
 process_one_work+0xc1e/0x1b50 kernel/workqueue.c:2145
 worker_thread+0x1cc/0x1440 kernel/workqueue.c:2279
 kthread+0x345/0x410 kernel/kthread.c:238
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:411
Code: 00 00 00 80 48 01 c2 72 43 48 b9 00 00 00 80 ff 77 00 00 48 01 ca 48 b9 00 00 00 00 00 ea ff ff 48 c1 ea 0c 48 c1 e2 06 48 01 ca <48> 8b 4a 20 48 8d 71 ff 83 e1 01 48 0f 45 d6 4c 8b 6a 30 e9 f4 
RIP: virt_to_head_page include/linux/mm.h:624 [inline] RSP: ffff8801d9946ce8
RIP: qlink_to_cache mm/kasan/quarantine.c:127 [inline] RSP: ffff8801d9946ce8
RIP: qlist_free_all+0x12b/0x160 mm/kasan/quarantine.c:163 RSP: ffff8801d9946ce8
---[ end trace c8dede7c11f20a91 ]---