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: 21 Comm: kworker/u4:1 Not tainted 5.2.0-rc3+ #21
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: netns cleanup_net
RIP: 0010:__read_once_size include/linux/compiler.h:194 [inline]
RIP: 0010:__fib6_drop_pcpu_from net/ipv6/ip6_fib.c:900 [inline]
RIP: 0010:fib6_drop_pcpu_from net/ipv6/ip6_fib.c:921 [inline]
RIP: 0010:fib6_purge_rt+0x1a0/0x800 net/ipv6/ip6_fib.c:929
Code: c1 ea 03 42 80 3c 32 00 0f 85 43 05 00 00 4c 8b 38 4d 85 ff 0f 84 5c ff ff ff e8 9b 93 4c fb 49 8d 7f 70 48 89 fa 48 c1 ea 03 <42> 80 3c 32 00 0f 85 79 05 00 00 49 8b 57 70 49 39 d5 0f 85 34 ff
RSP: 0018:ffff8880a9a0f160 EFLAGS: 00010206
RAX: ffff8880a99fe580 RBX: ffff8880a11f0b10 RCX: 1ffffffff10ea64d
RDX: 00000000000007af RSI: ffffffff86241465 RDI: 0000000000003d78
RBP: ffff8880a9a0f1c8 R08: ffff8880a99fe580 R09: ffffed1015341e1b
R10: ffffed1015341e1a R11: 0000000000000003 R12: 0000000000000001
R13: ffff88809b169c00 R14: dffffc0000000000 R15: 0000000000003d08
FS:  0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe1f8e84db8 CR3: 00000000a4ba2000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 fib6_del_route net/ipv6/ip6_fib.c:1817 [inline]
 fib6_del+0x9bd/0xeb0 net/ipv6/ip6_fib.c:1848
 fib6_clean_node+0x3a5/0x590 net/ipv6/ip6_fib.c:2010
 fib6_walk_continue+0x4a9/0x8e0 net/ipv6/ip6_fib.c:1932
 fib6_walk+0x9d/0x100 net/ipv6/ip6_fib.c:1980
 fib6_clean_tree+0xe0/0x120 net/ipv6/ip6_fib.c:2059
 __fib6_clean_all+0x118/0x2a0 net/ipv6/ip6_fib.c:2075
 fib6_clean_all+0x2b/0x40 net/ipv6/ip6_fib.c:2086
 rt6_sync_down_dev+0x134/0x150 net/ipv6/route.c:4343
 rt6_disable_ip+0x27/0x5f0 net/ipv6/route.c:4348
 addrconf_ifdown+0xa2/0x1220 net/ipv6/addrconf.c:3707
 addrconf_notify+0x5db/0x2370 net/ipv6/addrconf.c:3632
 notifier_call_chain+0xc2/0x230 kernel/notifier.c:95
 __raw_notifier_call_chain kernel/notifier.c:396 [inline]
 raw_notifier_call_chain+0x2e/0x40 kernel/notifier.c:403
 call_netdevice_notifiers_info+0x3f/0x90 net/core/dev.c:1749
 call_netdevice_notifiers_extack net/core/dev.c:1761 [inline]
 call_netdevice_notifiers net/core/dev.c:1775 [inline]
 dev_close_many+0x33f/0x6f0 net/core/dev.c:1518
 rollback_registered_many+0x43b/0xfc0 net/core/dev.c:8155
 unregister_netdevice_many.part.0+0x1b/0x1f0 net/core/dev.c:9286
 unregister_netdevice_many+0x3b/0x50 net/core/dev.c:9285
 sit_exit_batch_net+0x560/0x750 net/ipv6/sit.c:1891
 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 45cc85782ee0f3eb ]---
RIP: 0010:__read_once_size include/linux/compiler.h:194 [inline]
RIP: 0010:__fib6_drop_pcpu_from net/ipv6/ip6_fib.c:900 [inline]
RIP: 0010:fib6_drop_pcpu_from net/ipv6/ip6_fib.c:921 [inline]
RIP: 0010:fib6_purge_rt+0x1a0/0x800 net/ipv6/ip6_fib.c:929
Code: c1 ea 03 42 80 3c 32 00 0f 85 43 05 00 00 4c 8b 38 4d 85 ff 0f 84 5c ff ff ff e8 9b 93 4c fb 49 8d 7f 70 48 89 fa 48 c1 ea 03 <42> 80 3c 32 00 0f 85 79 05 00 00 49 8b 57 70 49 39 d5 0f 85 34 ff
RSP: 0018:ffff8880a9a0f160 EFLAGS: 00010206
RAX: ffff8880a99fe580 RBX: ffff8880a11f0b10 RCX: 1ffffffff10ea64d
RDX: 00000000000007af RSI: ffffffff86241465 RDI: 0000000000003d78
RBP: ffff8880a9a0f1c8 R08: ffff8880a99fe580 R09: ffffed1015341e1b
R10: ffffed1015341e1a R11: 0000000000000003 R12: 0000000000000001
R13: ffff88809b169c00 R14: dffffc0000000000 R15: 0000000000003d08
FS:  0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe1f8e84db8 CR3: 00000000a4ba2000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400