usb 5-1: USB disconnect, device number 7
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: 2989 Comm: kworker/0:2 Not tainted 5.10.0-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:tower_disconnect+0x4e/0x300 drivers/usb/misc/legousbtower.c:848
Code: 00 00 00 48 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 93 a9 07 fc 48 8b 1b 48 8d bb 98 00 00 00 48 89 f8 48 c1 e8 03 <42> 8a 04 38 84 c0 0f 85 58 02 00 00 0f b6 83 98 00 00 00 89 44 24
RSP: 0018:ffffc900012675c8 EFLAGS: 00010202
RAX: 0000000000000013 RBX: 0000000000000000 RCX: 0000000000040000
RDX: ffffc900164f9000 RSI: 0000000000002fb3 RDI: 0000000000000098
RBP: ffff88801c081000 R08: dffffc0000000000 R09: fffffbfff1dd406d
R10: fffffbfff1dd406d R11: 0000000000000000 R12: 00000000ffffffed
R13: ffff88801c081000 R14: ffffffff8c712810 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055725239d70f CR3: 0000000015381000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 usb_unbind_interface+0x1d5/0x840 drivers/usb/core/driver.c:458
 __device_release_driver drivers/base/dd.c:1154 [inline]
 device_release_driver_internal+0x51e/0x7b0 drivers/base/dd.c:1185
 bus_remove_device+0x2ff/0x420 drivers/base/bus.c:533
 device_del+0x5e1/0xb80 drivers/base/core.c:3115
 usb_disable_device+0x427/0x810 drivers/usb/core/message.c:1410
 usb_disconnect+0x36f/0x8a0 drivers/usb/core/hub.c:2217
 hub_port_connect+0x21e/0x2540 drivers/usb/core/hub.c:5073
 hub_port_connect_change+0x600/0xb00 drivers/usb/core/hub.c:5362
 port_event+0xae9/0x10a0 drivers/usb/core/hub.c:5508
 hub_event+0x417/0xcb0 drivers/usb/core/hub.c:5590
 process_one_work+0x789/0xfc0 kernel/workqueue.c:2272
 worker_thread+0xaa4/0x1460 kernel/workqueue.c:2418
 kthread+0x39a/0x3c0 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296
Modules linked in:
---[ end trace 33b5fdb6a443e328 ]---
RIP: 0010:tower_disconnect+0x4e/0x300 drivers/usb/misc/legousbtower.c:848
Code: 00 00 00 48 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 93 a9 07 fc 48 8b 1b 48 8d bb 98 00 00 00 48 89 f8 48 c1 e8 03 <42> 8a 04 38 84 c0 0f 85 58 02 00 00 0f b6 83 98 00 00 00 89 44 24
RSP: 0018:ffffc900012675c8 EFLAGS: 00010202
RAX: 0000000000000013 RBX: 0000000000000000 RCX: 0000000000040000
RDX: ffffc900164f9000 RSI: 0000000000002fb3 RDI: 0000000000000098
RBP: ffff88801c081000 R08: dffffc0000000000 R09: fffffbfff1dd406d
R10: fffffbfff1dd406d R11: 0000000000000000 R12: 00000000ffffffed
R13: ffff88801c081000 R14: ffffffff8c712810 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000557252352708 CR3: 000000001c695000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600