general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 1 PID: 3267 Comm: kworker/1:5 Not tainted 5.6.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: usb_hub_wq hub_event
RIP: 0010:__list_del_entry_valid+0x81/0xef lib/list_debug.c:51
Code: 0f 84 df 00 00 00 48 b8 22 01 00 00 00 00 ad de 49 39 c4 0f 84 e0 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 75 51 49 8b 14 24 48 39 ea 0f 85 97 00 00 00 49 8d 7d
RSP: 0018:ffff8881bd317990 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffff8881d248a010 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff8881d248a1b8
RBP: ffff8881d248a1b0 R08: ffffffff892fb3d0 R09: fffffbfff0e86431
R10: ffff8881bd3179b0 R11: ffffffff87432187 R12: 0000000000000000
R13: ffff8881d2480000 R14: ffff8881d248a1b8 R15: ffff8881d5cbc1a0
FS:  0000000000000000(0000) GS:ffff8881db300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffe6d602698 CR3: 00000001cfce2000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __list_del_entry include/linux/list.h:132 [inline]
 list_del include/linux/list.h:146 [inline]
 device_links_purge drivers/base/core.c:1119 [inline]
 device_del+0x4ca/0xd30 drivers/base/core.c:2682
 device_unregister+0x22/0xc0 drivers/base/core.c:2709
 usb_remove_ep_devs+0x3e/0x80 drivers/usb/core/endpoint.c:215
 usb_disconnect+0x4bb/0x900 drivers/usb/core/hub.c:2230
 hub_port_connect drivers/usb/core/hub.c:5046 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5335 [inline]
 port_event drivers/usb/core/hub.c:5481 [inline]
 hub_event+0x1a1d/0x4300 drivers/usb/core/hub.c:5563
 process_one_work+0x94b/0x1620 kernel/workqueue.c:2266
 worker_thread+0x96/0xe20 kernel/workqueue.c:2412
 kthread+0x318/0x420 kernel/kthread.c:255
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352
Modules linked in:
---[ end trace 36d234917fe7a90e ]---
RIP: 0010:__list_del_entry_valid+0x81/0xef lib/list_debug.c:51
Code: 0f 84 df 00 00 00 48 b8 22 01 00 00 00 00 ad de 49 39 c4 0f 84 e0 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 75 51 49 8b 14 24 48 39 ea 0f 85 97 00 00 00 49 8d 7d
RSP: 0018:ffff8881bd317990 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffff8881d248a010 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff8881d248a1b8
RBP: ffff8881d248a1b0 R08: ffffffff892fb3d0 R09: fffffbfff0e86431
R10: ffff8881bd3179b0 R11: ffffffff87432187 R12: 0000000000000000
R13: ffff8881d2480000 R14: ffff8881d248a1b8 R15: ffff8881d5cbc1a0
FS:  0000000000000000(0000) GS:ffff8881db300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffe6d602698 CR3: 0000000007021000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400