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: 298 Comm: kworker/u4:3 Not tainted 5.0.0+ #131
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: netns cleanup_net
RIP: 0010:rt_cache_valid+0x33/0x190 net/ipv4/route.c:1517
Code: 31 e4 53 48 89 fb e8 2c a5 96 fb 48 85 db 74 4f e8 22 a5 96 fb 48 8d 7b 3a 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 07
RSP: 0018:ffff8880ae807798 EFLAGS: 00010207
RAX: dffffc0000000000 RBX: 0000000000001a94 RCX: ffffffff85db0841
RDX: 0000000000000359 RSI: ffffffff85d9bf0e RDI: 0000000000001ace
RBP: ffff8880ae8077b0 R08: ffff8880a9614240 R09: ffffed1015d05bc8
R10: ffffed1015d05bc7 R11: ffff8880ae82de3b R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000001a94 R15: ffff888064583540
FS:  0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000940004 CR3: 00000000644cd000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 __mkroute_output net/ipv4/route.c:2273 [inline]
 ip_route_output_key_hash_rcu+0x89d/0x30e0 net/ipv4/route.c:2505
 ip_route_output_key_hash+0x212/0x380 net/ipv4/route.c:2334
 __ip_route_output_key include/net/route.h:124 [inline]
 ip_route_output_flow+0x28/0xc0 net/ipv4/route.c:2589
 ip_route_output_key include/net/route.h:134 [inline]
 tipc_udp_xmit.isra.0+0x565/0xcc0 net/tipc/udp_media.c:173
 tipc_udp_send_msg+0x295/0x4a0 net/tipc/udp_media.c:247
 tipc_bearer_xmit_skb+0x172/0x360 net/tipc/bearer.c:503
 tipc_disc_timeout+0x933/0xd60 net/tipc/discover.c:332
 call_timer_fn+0x190/0x720 kernel/time/timer.c:1325
 expire_timers kernel/time/timer.c:1362 [inline]
 __run_timers kernel/time/timer.c:1681 [inline]
 __run_timers kernel/time/timer.c:1649 [inline]
 run_timer_softirq+0x652/0x1700 kernel/time/timer.c:1694
 __do_softirq+0x266/0x95a kernel/softirq.c:293
 invoke_softirq kernel/softirq.c:374 [inline]
 irq_exit+0x180/0x1d0 kernel/softirq.c:414
 exiting_irq arch/x86/include/asm/apic.h:536 [inline]
 smp_apic_timer_interrupt+0x14a/0x570 arch/x86/kernel/apic/apic.c:1062
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:807
 </IRQ>
RIP: 0010:___might_sleep+0x1a8/0x280 kernel/sched/core.c:6157
Code: 00 00 fc ff df 48 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 b6 00 00 00 41 f6 46 24 02 <0f> 85 e3 fe ff ff e9 1a ff ff ff be ff ff ff ff 48 c7 c7 80 5b 9a
RSP: 0018:ffff8880a9697b50 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000007 RBX: 0000000000000000 RCX: ffff8880a9614ac0
RDX: 0000000000000000 RSI: ffffffff889a5b80 RDI: ffff8880a9614264
RBP: ffff8880a9697b78 R08: ffff8880a9614240 R09: 0000000000000004
R10: ffffed1015d05bc7 R11: ffff8880ae82de3b R12: ffffffff88047e40
R13: 000000000000010a R14: ffff8880a9614240 R15: ffff8880a9614240
 inet_twsk_purge+0x96/0x5f0 net/ipv4/inet_timewait_sock.c:266
 dccp_v4_exit_batch+0x1a/0x20 net/dccp/ipv4.c:1033
 ops_exit_list.isra.0+0x105/0x160 net/core/net_namespace.c:156
 cleanup_net+0x3fb/0x960 net/core/net_namespace.c:551
 process_one_work+0x98e/0x1790 kernel/workqueue.c:2269
 worker_thread+0x98/0xe40 kernel/workqueue.c:2415
 kthread+0x357/0x430 kernel/kthread.c:253
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352
Modules linked in:
---[ end trace 8a4ff1655c2e686c ]---
RIP: 0010:rt_cache_valid+0x33/0x190 net/ipv4/route.c:1517
Code: 31 e4 53 48 89 fb e8 2c a5 96 fb 48 85 db 74 4f e8 22 a5 96 fb 48 8d 7b 3a 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 07
RSP: 0018:ffff8880ae807798 EFLAGS: 00010207
RAX: dffffc0000000000 RBX: 0000000000001a94 RCX: ffffffff85db0841
RDX: 0000000000000359 RSI: ffffffff85d9bf0e RDI: 0000000000001ace
RBP: ffff8880ae8077b0 R08: ffff8880a9614240 R09: ffffed1015d05bc8
R10: ffffed1015d05bc7 R11: ffff8880ae82de3b R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000001a94 R15: ffff888064583540
FS:  0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000940004 CR3: 00000000644cd000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400