IPVS: stopping master sync thread 31252 ... 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: 29160 Comm: kworker/u4:5 Not tainted 5.0.0+ #108 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: netns cleanup_net RIP: 0010:fib6_drop_pcpu_from net/ipv6/ip6_fib.c:924 [inline] RIP: 0010:fib6_purge_rt+0x4b3/0x670 net/ipv6/ip6_fib.c:960 Code: 0f b6 35 93 c4 42 03 31 ff 44 89 f6 e8 b6 94 58 fb 45 84 f6 0f 84 b3 00 00 00 e8 68 93 58 fb 49 8d 7f 70 48 89 f8 48 c1 e8 03 <80> 3c 18 00 0f 85 64 01 00 00 48 89 f8 4d 8b 77 70 48 c1 e8 03 80 RSP: 0018:ffff88805f21f0c8 EFLAGS: 00010203 RAX: 0000000000001f2f RBX: dffffc0000000000 RCX: ffffffff8617d199 RDX: 0000000000000000 RSI: ffffffff8617d0c8 RDI: 000000000000f97c RBP: ffff88805f21f120 R08: ffff88806a68c640 R09: ffffed101367531e R10: ffffed101367531d R11: ffff88809b3a98ef R12: 0000000000000000 R13: ffff88809b3a98c0 R14: 0000000000000001 R15: 000000000000f90c FS: 0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fffcff06ac0 CR3: 00000000954b1000 CR4: 00000000001406f0 Call Trace: fib6_del_route net/ipv6/ip6_fib.c:1813 [inline] fib6_del+0xac2/0x10a0 net/ipv6/ip6_fib.c:1844 fib6_clean_node+0x3a8/0x590 net/ipv6/ip6_fib.c:2006 fib6_walk_continue+0x495/0x900 net/ipv6/ip6_fib.c:1928 fib6_walk+0x9d/0x100 net/ipv6/ip6_fib.c:1976 fib6_clean_tree+0xe0/0x120 net/ipv6/ip6_fib.c:2055 __fib6_clean_all+0x118/0x2a0 net/ipv6/ip6_fib.c:2071 fib6_clean_all+0x2b/0x40 net/ipv6/ip6_fib.c:2082 rt6_sync_down_dev+0x134/0x150 net/ipv6/route.c:4037 rt6_disable_ip+0x27/0x5f0 net/ipv6/route.c:4042 addrconf_ifdown+0xa2/0x1220 net/ipv6/addrconf.c:3705 addrconf_notify+0x19a/0x2260 net/ipv6/addrconf.c:3630 notifier_call_chain+0xc7/0x240 kernel/notifier.c:93 __raw_notifier_call_chain kernel/notifier.c:394 [inline] raw_notifier_call_chain+0x2e/0x40 kernel/notifier.c:401 call_netdevice_notifiers_info+0x3f/0x90 net/core/dev.c:1739 call_netdevice_notifiers_extack net/core/dev.c:1751 [inline] call_netdevice_notifiers net/core/dev.c:1765 [inline] dev_close_many+0x33f/0x6f0 net/core/dev.c:1508 rollback_registered_many+0x43b/0xfd0 net/core/dev.c:8168 unregister_netdevice_many.part.0+0x1b/0x1f0 net/core/dev.c:9299 unregister_netdevice_many net/core/dev.c:9298 [inline] default_device_exit_batch+0x350/0x410 net/core/dev.c:9768 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 18b8b6e0ebe460ba ]--- RIP: 0010:fib6_drop_pcpu_from net/ipv6/ip6_fib.c:924 [inline] RIP: 0010:fib6_purge_rt+0x4b3/0x670 net/ipv6/ip6_fib.c:960 Code: 0f b6 35 93 c4 42 03 31 ff 44 89 f6 e8 b6 94 58 fb 45 84 f6 0f 84 b3 00 00 00 e8 68 93 58 fb 49 8d 7f 70 48 89 f8 48 c1 e8 03 <80> 3c 18 00 0f 85 64 01 00 00 48 89 f8 4d 8b 77 70 48 c1 e8 03 80 RSP: 0018:ffff88805f21f0c8 EFLAGS: 00010203 RAX: 0000000000001f2f RBX: dffffc0000000000 RCX: ffffffff8617d199 RDX: 0000000000000000 RSI: ffffffff8617d0c8 RDI: 000000000000f97c RBP: ffff88805f21f120 R08: ffff88806a68c640 R09: ffffed101367531e R10: ffffed101367531d R11: ffff88809b3a98ef R12: 0000000000000000 R13: ffff88809b3a98c0 R14: 0000000000000001 R15: 000000000000f90c FS: 0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fffcff06ac0 CR3: 00000000954b1000 CR4: 00000000001406f0