IPv6: ADDRCONF(NETDEV_UP): wlan1: link is not ready IPv6: ADDRCONF(NETDEV_UP): wlan1: link is not ready IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready list_add double add: new=ffff8880ab03ab58, prev=ffff8880ab03ab58, next=ffff88823b29c400. ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:29! invalid opcode: 0000 [#1] PREEMPT SMP KASAN IPv6: ADDRCONF(NETDEV_UP): wlan1: link is not ready CPU: 1 PID: 8142 Comm: kworker/u5:8 Not tainted 4.19.163-syzkaller #0 wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: hci5 hci_rx_work RIP: 0010:__list_add_valid.cold+0x26/0x3c lib/list_debug.c:29 Code: 57 ff ff ff 4c 89 e1 48 c7 c7 a0 bb b3 88 e8 d1 a6 cf fd 0f 0b 48 89 f2 4c 89 e1 48 89 ee 48 c7 c7 e0 bc b3 88 e8 ba a6 cf fd <0f> 0b 48 89 f1 48 c7 c7 60 bc b3 88 4c 89 e6 e8 a6 a6 cf fd 0f 0b wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 RSP: 0018:ffff888094f67800 EFLAGS: 00010282 RAX: 0000000000000058 RBX: ffff88823b29c400 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff814fdbb1 RDI: ffffed10129ecef2 RBP: ffff8880ab03ab58 R08: 0000000000000058 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000000 R12: ffff88823b29c400 R13: ffff8880956e62d0 R14: ffff8880ab03ab70 R15: ffff8880ab03ab58 FS: 0000000000000000(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffdf495b070 CR3: 0000000009e6d000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __list_add include/linux/list.h:60 [inline] list_add_tail include/linux/list.h:93 [inline] kobj_kset_join lib/kobject.c:188 [inline] kobject_add_internal+0x18d/0x9c0 lib/kobject.c:238 kobject_add_varg lib/kobject.c:382 [inline] kobject_add+0x150/0x1c0 lib/kobject.c:426 wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 device_add+0x37b/0x16d0 drivers/base/core.c:2106 hci_conn_add_sysfs+0x97/0x1a0 net/bluetooth/hci_sysfs.c:53 hci_sync_conn_complete_evt.isra.0+0x9e9/0xca0 net/bluetooth/hci_event.c:4091 hci_event_packet+0x391f/0x7e19 net/bluetooth/hci_event.c:5854 hci_rx_work+0x4ad/0xc70 net/bluetooth/hci_core.c:4359 process_one_work+0x864/0x1570 kernel/workqueue.c:2155 IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready worker_thread+0x64c/0x1130 kernel/workqueue.c:2298 wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 Modules linked in: IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready ---[ end trace 95f979322632bded ]--- IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready RIP: 0010:__list_add_valid.cold+0x26/0x3c lib/list_debug.c:29 Code: 57 ff ff ff 4c 89 e1 48 c7 c7 a0 bb b3 88 e8 d1 a6 cf fd 0f 0b 48 89 f2 4c 89 e1 48 89 ee 48 c7 c7 e0 bc b3 88 e8 ba a6 cf fd <0f> 0b 48 89 f1 48 c7 c7 60 bc b3 88 4c 89 e6 e8 a6 a6 cf fd 0f 0b RSP: 0018:ffff888094f67800 EFLAGS: 00010282 RAX: 0000000000000058 RBX: ffff88823b29c400 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff814fdbb1 RDI: ffffed10129ecef2 RBP: ffff8880ab03ab58 R08: 0000000000000058 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000000 R12: ffff88823b29c400 R13: ffff8880956e62d0 R14: ffff8880ab03ab70 R15: ffff8880ab03ab58 FS: 0000000000000000(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffdf495b070 CR3: 0000000009e6d000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400