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: 9409 Comm: kworker/u4:10 Not tainted 5.2.0-rc2+ #9 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:899 [inline] RIP: 0010:fib6_drop_pcpu_from net/ipv6/ip6_fib.c:920 [inline] RIP: 0010:fib6_purge_rt+0x1a0/0x630 net/ipv6/ip6_fib.c:928 Code: c1 ea 03 42 80 3c 32 00 0f 85 1d 04 00 00 4c 8b 38 4d 85 ff 0f 84 5c ff ff ff e8 8b d9 4d fb 49 8d 7f 70 48 89 fa 48 c1 ea 03 <42> 80 3c 32 00 0f 85 0b 04 00 00 49 8b 57 70 49 39 d5 0f 85 34 ff RSP: 0018:ffff888063e57160 EFLAGS: 00010207 RAX: ffff888087266280 RBX: ffff88805a906480 RCX: 1ffffffff10ea44d RDX: 0000000000000011 RSI: ffffffff8622cc35 RDI: 000000000000008c RBP: ffff888063e571c8 R08: ffff888087266280 R09: ffffed100c7cae13 R10: ffffed100c7cae12 R11: 0000000000000003 R12: 0000000000000001 R13: ffff8880a575e000 R14: dffffc0000000000 R15: 000000000000001c FS: 0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007efe26f6f008 CR3: 000000009a5de000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: fib6_del_route net/ipv6/ip6_fib.c:1811 [inline] fib6_del+0x9bd/0xeb0 net/ipv6/ip6_fib.c:1842 fib6_clean_node+0x3a5/0x590 net/ipv6/ip6_fib.c:2004 fib6_walk_continue+0x4a9/0x8e0 net/ipv6/ip6_fib.c:1926 fib6_walk+0x9d/0x100 net/ipv6/ip6_fib.c:1974 fib6_clean_tree+0xe0/0x120 net/ipv6/ip6_fib.c:2053 __fib6_clean_all+0x118/0x2a0 net/ipv6/ip6_fib.c:2069 fib6_clean_all+0x2b/0x40 net/ipv6/ip6_fib.c:2080 rt6_sync_down_dev+0x134/0x150 net/ipv6/route.c:4285 rt6_disable_ip+0x27/0x5f0 net/ipv6/route.c:4290 addrconf_ifdown+0xa2/0x1220 net/ipv6/addrconf.c:3709 addrconf_notify+0x5db/0x2270 net/ipv6/addrconf.c:3634 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: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/0xfc0 net/core/dev.c:8159 unregister_netdevice_many.part.0+0x1b/0x1f0 net/core/dev.c:9290 unregister_netdevice_many+0x3b/0x50 net/core/dev.c:9289 sit_exit_batch_net+0x560/0x750 net/ipv6/sit.c:1895 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 dd145cb076c61f90 ]--- RIP: 0010:__read_once_size include/linux/compiler.h:194 [inline] RIP: 0010:__fib6_drop_pcpu_from net/ipv6/ip6_fib.c:899 [inline] RIP: 0010:fib6_drop_pcpu_from net/ipv6/ip6_fib.c:920 [inline] RIP: 0010:fib6_purge_rt+0x1a0/0x630 net/ipv6/ip6_fib.c:928 Code: c1 ea 03 42 80 3c 32 00 0f 85 1d 04 00 00 4c 8b 38 4d 85 ff 0f 84 5c ff ff ff e8 8b d9 4d fb 49 8d 7f 70 48 89 fa 48 c1 ea 03 <42> 80 3c 32 00 0f 85 0b 04 00 00 49 8b 57 70 49 39 d5 0f 85 34 ff RSP: 0018:ffff888063e57160 EFLAGS: 00010207 RAX: ffff888087266280 RBX: ffff88805a906480 RCX: 1ffffffff10ea44d RDX: 0000000000000011 RSI: ffffffff8622cc35 RDI: 000000000000008c RBP: ffff888063e571c8 R08: ffff888087266280 R09: ffffed100c7cae13 R10: ffffed100c7cae12 R11: 0000000000000003 R12: 0000000000000001 R13: ffff8880a575e000 R14: dffffc0000000000 R15: 000000000000001c FS: 0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007efe26f6f008 CR3: 000000009a5de000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400