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: 1 PID: 8515 Comm: kworker/u4:7 Not tainted 5.1.0-rc5+ #174 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 0f 06 44 03 31 ff 44 89 f6 e8 96 17 5a fb 45 84 f6 0f 84 b3 00 00 00 e8 48 16 5a 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:ffff8880652c70d8 EFLAGS: 00010206 RAX: 0000000000000011 RBX: dffffc0000000000 RCX: ffffffff86167739 RDX: 0000000000000000 RSI: ffffffff86167668 RDI: 000000000000008b RBP: ffff8880652c7130 R08: ffff8880652b6000 R09: ffffed100d6a2536 R10: ffffed100d6a2535 R11: ffff88806b5129af R12: 0000000000000000 R13: ffff88806b512980 R14: 0000000000000001 R15: 000000000000001b FS: 0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2e289b3000 CR3: 000000008cd06000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 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:4057 rt6_disable_ip+0x27/0x5f0 net/ipv6/route.c:4062 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:1753 call_netdevice_notifiers_extack net/core/dev.c:1765 [inline] call_netdevice_notifiers net/core/dev.c:1779 [inline] dev_close_many+0x33f/0x6f0 net/core/dev.c:1522 rollback_registered_many+0x43b/0xfd0 net/core/dev.c:8177 unregister_netdevice_many.part.0+0x1b/0x1f0 net/core/dev.c:9308 unregister_netdevice_many+0x3b/0x50 net/core/dev.c:9307 ip_tunnel_delete_nets+0x41e/0x5f0 net/ipv4/ip_tunnel.c:1126 ipip_exit_batch_net+0x23/0x30 net/ipv4/ipip.c:663 ops_exit_list.isra.0+0x105/0x160 net/core/net_namespace.c:156 cleanup_net+0x3fb/0x960 net/core/net_namespace.c:552 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 b5bf0f0cfc04a325 ]--- 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 0f 06 44 03 31 ff 44 89 f6 e8 96 17 5a fb 45 84 f6 0f 84 b3 00 00 00 e8 48 16 5a 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:ffff8880652c70d8 EFLAGS: 00010206 RAX: 0000000000000011 RBX: dffffc0000000000 RCX: ffffffff86167739 RDX: 0000000000000000 RSI: ffffffff86167668 RDI: 000000000000008b RBP: ffff8880652c7130 R08: ffff8880652b6000 R09: ffffed100d6a2536 R10: ffffed100d6a2535 R11: ffff88806b5129af R12: 0000000000000000 R13: ffff88806b512980 R14: 0000000000000001 R15: 000000000000001b FS: 0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2e289b3000 CR3: 000000008cd06000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400