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: 7523 Comm: kworker/u4:5 Not tainted 5.3.0+ #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: netns cleanup_net
RIP: 0010:dev_net include/linux/netdevice.h:2182 [inline]
RIP: 0010:sit_destroy_tunnels net/ipv6/sit.c:1831 [inline]
RIP: 0010:sit_exit_batch_net+0x2d6/0x5a0 net/ipv6/sit.c:1894
Code: 00 49 8d 7c 24 18 48 89 f8 48 c1 e8 03 80 3c 18 00 0f 85 8c 01 00 00 49 8b 44 24 18 48 8d b8 80 05 00 00 48 89 fa 48 c1 ea 03 <80> 3c 1a 00 0f 85 57 01 00 00 4c 3b a8 80 05 00 00 74 0c 48 8d 75
RSP: 0018:ffff88807a28fb68 EFLAGS: 00010202
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffff888099270c18
RDX: 00000000000000b0 RSI: ffffffff88f20060 RDI: 0000000000000580
RBP: ffff88807a28fc18 R08: fffffbfff11e4001 R09: fffffbfff11e4001
R10: fffffbfff11e4000 R11: ffffffff88f20007 R12: ffff888099869540
R13: ffff888086c42380 R14: 0000000000000030 R15: ffff88809112fe50
FS:  0000000000000000(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff41896ddb8 CR3: 0000000090c3a000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 ops_exit_list.isra.6+0xd3/0x120 net/core/net_namespace.c:175
 cleanup_net+0x430/0x950 net/core/net_namespace.c:594
 process_one_work+0x856/0x1630 kernel/workqueue.c:2269
 worker_thread+0x85/0xb60 kernel/workqueue.c:2415
 kthread+0x331/0x3f0 kernel/kthread.c:255
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352
Modules linked in:
---[ end trace 0810f10e0a97684d ]---
RIP: 0010:dev_net include/linux/netdevice.h:2182 [inline]
RIP: 0010:sit_destroy_tunnels net/ipv6/sit.c:1831 [inline]
RIP: 0010:sit_exit_batch_net+0x2d6/0x5a0 net/ipv6/sit.c:1894
Code: 00 49 8d 7c 24 18 48 89 f8 48 c1 e8 03 80 3c 18 00 0f 85 8c 01 00 00 49 8b 44 24 18 48 8d b8 80 05 00 00 48 89 fa 48 c1 ea 03 <80> 3c 1a 00 0f 85 57 01 00 00 4c 3b a8 80 05 00 00 74 0c 48 8d 75
RSP: 0018:ffff88807a28fb68 EFLAGS: 00010202
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffff888099270c18
RDX: 00000000000000b0 RSI: ffffffff88f20060 RDI: 0000000000000580
RBP: ffff88807a28fc18 R08: fffffbfff11e4001 R09: fffffbfff11e4001
R10: fffffbfff11e4000 R11: ffffffff88f20007 R12: ffff888099869540
R13: ffff888086c42380 R14: 0000000000000030 R15: ffff88809112fe50
FS:  0000000000000000(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff41896ddb8 CR3: 000000008cdb9000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400