usb 2-1: USB disconnect, device number 3
general protection fault, probably for non-canonical address 0xdffffc0000000013: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000098-0x000000000000009f]
CPU: 0 PID: 9905 Comm: kworker/0:5 Not tainted 5.10.0-rc7-next-20201208-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: usb_hub_wq hub_event
RIP: 0010:tower_disconnect+0x53/0x360 drivers/usb/misc/legousbtower.c:848
Code: 03 80 3c 02 00 0f 85 15 03 00 00 48 8b ab a8 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d bd 98 00 00 00 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 06 0f 8e 7b 02 00 00 48 c7 c6 60 77 86 8c 48
RSP: 0018:ffffc900163cf7c0 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffff8880710ec000 RCX: ffffc900164b1000
RDX: 0000000000000013 RSI: ffffffff85793d92 RDI: 0000000000000098
RBP: 0000000000000000 R08: 0000000000000002 R09: 0000000000000000
R10: ffffffff853f9d97 R11: 0000000000000000 R12: ffff8880710ec090
R13: ffff8880710ec078 R14: ffff8880710ec030 R15: ffff8880710ec098
FS:  0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32823000 CR3: 0000000062bda000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 usb_unbind_interface+0x1d8/0x8d0 drivers/usb/core/driver.c:458
 __device_release_driver+0x40d/0x740 drivers/base/dd.c:1154
 device_release_driver_internal drivers/base/dd.c:1185 [inline]
 device_release_driver+0x26/0x40 drivers/base/dd.c:1208
 bus_remove_device+0x2eb/0x5a0 drivers/base/bus.c:533
 device_del+0x502/0xec0 drivers/base/core.c:3113
 usb_disable_device+0x35b/0x7b0 drivers/usb/core/message.c:1416
 usb_disconnect.cold+0x27d/0x780 drivers/usb/core/hub.c:2218
 hub_port_connect drivers/usb/core/hub.c:5074 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5363 [inline]
 port_event drivers/usb/core/hub.c:5509 [inline]
 hub_event+0x1c8a/0x42d0 drivers/usb/core/hub.c:5591
 process_one_work+0x98d/0x1630 kernel/workqueue.c:2275
 worker_thread+0x64c/0x1120 kernel/workqueue.c:2421
 kthread+0x3b1/0x4a0 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296
Modules linked in:
---[ end trace 96f795f01870dd69 ]---
RIP: 0010:tower_disconnect+0x53/0x360 drivers/usb/misc/legousbtower.c:848
Code: 03 80 3c 02 00 0f 85 15 03 00 00 48 8b ab a8 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d bd 98 00 00 00 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 06 0f 8e 7b 02 00 00 48 c7 c6 60 77 86 8c 48
RSP: 0018:ffffc900163cf7c0 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffff8880710ec000 RCX: ffffc900164b1000
RDX: 0000000000000013 RSI: ffffffff85793d92 RDI: 0000000000000098
RBP: 0000000000000000 R08: 0000000000000002 R09: 0000000000000000
R10: ffffffff853f9d97 R11: 0000000000000000 R12: ffff8880710ec090
R13: ffff8880710ec078 R14: ffff8880710ec030 R15: ffff8880710ec098
FS:  0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb0c08d4be0 CR3: 0000000027f80000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400