general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 1 PID: 9748 Comm: kworker/1:6 Not tainted 5.8.0-rc2-next-20200626-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: usb_hub_wq hub_event
RIP: 0010:__queue_work+0x39a/0xff0 kernel/workqueue.c:1434
Code: 0a 9e 06 48 89 d8 48 c1 e8 03 80 3c 28 00 0f 85 f6 0b 00 00 48 8b 3b e8 e4 08 9e 06 eb 26 e8 bd f5 27 00 48 89 d8 48 c1 e8 03 <80> 3c 28 00 0f 85 ae 0b 00 00 4c 8b 2b e8 a4 f5 27 00 4c 89 ef e8
RSP: 0018:ffffc90001ad75e8 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffc90017239000
RDX: 0000000000040000 RSI: ffffffff814bf443 RDI: 0000000000000005
RBP: dffffc0000000000 R08: 0000000000000001 R09: ffff8880521bcb5f
R10: 000000007fffffff R11: 0000000000000000 R12: ffff8880521bcb58
R13: 0000000000000000 R14: ffff8880a4e47000 R15: 0000000000000040
FS:  0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000559334119500 CR3: 000000005ebcd000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 queue_work_on+0x18b/0x200 kernel/workqueue.c:1518
 queue_work include/linux/workqueue.h:507 [inline]
 hci_update_background_scan net/bluetooth/hci_request.h:115 [inline]
 hci_adv_monitors_clear+0x150/0x1d0 net/bluetooth/hci_core.c:3009
 hci_unregister_dev+0x417/0xe20 net/bluetooth/hci_core.c:3810
 btusb_disconnect+0x189/0x500 drivers/bluetooth/btusb.c:4140
 usb_unbind_interface+0x1d8/0x8d0 drivers/usb/core/driver.c:436
 __device_release_driver+0x3b7/0x6e0 drivers/base/dd.c:1113
 device_release_driver_internal drivers/base/dd.c:1144 [inline]
 device_release_driver+0x26/0x40 drivers/base/dd.c:1167
 bus_remove_device+0x2dc/0x4a0 drivers/base/bus.c:533
 device_del+0x47c/0xd20 drivers/base/core.c:2857
 usb_disable_device+0x361/0x800 drivers/usb/core/message.c:1245
 usb_disconnect.cold+0x251/0x742 drivers/usb/core/hub.c:2217
 hub_port_connect drivers/usb/core/hub.c:5059 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5348 [inline]
 port_event drivers/usb/core/hub.c:5494 [inline]
 hub_event+0x1965/0x3e40 drivers/usb/core/hub.c:5576
 process_one_work+0x94c/0x1670 kernel/workqueue.c:2269
 worker_thread+0x64c/0x1120 kernel/workqueue.c:2415
 kthread+0x3b5/0x4a0 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294
Modules linked in:
---[ end trace 835dd0af7df4640e ]---
RIP: 0010:__queue_work+0x39a/0xff0 kernel/workqueue.c:1434
Code: 0a 9e 06 48 89 d8 48 c1 e8 03 80 3c 28 00 0f 85 f6 0b 00 00 48 8b 3b e8 e4 08 9e 06 eb 26 e8 bd f5 27 00 48 89 d8 48 c1 e8 03 <80> 3c 28 00 0f 85 ae 0b 00 00 4c 8b 2b e8 a4 f5 27 00 4c 89 ef e8
RSP: 0018:ffffc90001ad75e8 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffc90017239000
RDX: 0000000000040000 RSI: ffffffff814bf443 RDI: 0000000000000005
RBP: dffffc0000000000 R08: 0000000000000001 R09: ffff8880521bcb5f
R10: 000000007fffffff R11: 0000000000000000 R12: ffff8880521bcb58
R13: 0000000000000000 R14: ffff8880a4e47000 R15: 0000000000000040
FS:  0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000559334119500 CR3: 000000005ebcd000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400