==================================================================
BUG: KASAN: use-after-free in __mutex_lock_common kernel/locking/mutex.c:912 [inline]
BUG: KASAN: use-after-free in __mutex_lock+0xf23/0x1360 kernel/locking/mutex.c:1077
Read of size 8 at addr ffff8881d67ca7d8 by task syz-executor077/3234

CPU: 0 PID: 3234 Comm: syz-executor077 Not tainted 5.3.0-rc2+ #25
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0xca/0x13e lib/dump_stack.c:113
 print_address_description+0x6a/0x32c mm/kasan/report.c:351
 __kasan_report.cold+0x1a/0x33 mm/kasan/report.c:482
 kasan_report+0xe/0x12 mm/kasan/common.c:612
 __mutex_lock_common kernel/locking/mutex.c:912 [inline]
 __mutex_lock+0xf23/0x1360 kernel/locking/mutex.c:1077
 ld_usb_release+0xb1/0x400 drivers/usb/misc/ldusb.c:386
 __fput+0x2d7/0x840 fs/file_table.c:280
 task_work_run+0x13f/0x1c0 kernel/task_work.c:113
 exit_task_work include/linux/task_work.h:22 [inline]
 do_exit+0x8ef/0x2c50 kernel/exit.c:878
 do_group_exit+0x125/0x340 kernel/exit.c:982
 get_signal+0x466/0x23d0 kernel/signal.c:2728
 do_signal+0x88/0x14e0 arch/x86/kernel/signal.c:815
 exit_to_usermode_loop+0x1a2/0x200 arch/x86/entry/common.c:159
 prepare_exit_to_usermode arch/x86/entry/common.c:194 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:274 [inline]
 do_syscall_64+0x45f/0x580 arch/x86/entry/common.c:299
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x445b71
Code: 75 14 b8 23 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 64 1f fc ff c3 48 83 ec 08 e8 ea 43 00 00 48 89 04 24 b8 23 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 33 44 00 00 48 89 d0 48 83 c4 08 48 3d 01
RSP: 002b:00007f2e145e9cc0 EFLAGS: 00000293 ORIG_RAX: 0000000000000023
RAX: fffffffffffffdfc RBX: 00000000006dcc38 RCX: 0000000000445b71
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00007f2e145e9cd0
RBP: 00000000006dcc30 R08: 000000000000000f R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 00000000006dcc3c
R13: 00007ffe9b831f9f R14: 00007f2e145ea9c0 R15: 0000000000000001

Allocated by task 1746:
 save_stack+0x1b/0x80 mm/kasan/common.c:69
 set_track mm/kasan/common.c:77 [inline]
 __kasan_kmalloc mm/kasan/common.c:487 [inline]
 __kasan_kmalloc.constprop.0+0xbf/0xd0 mm/kasan/common.c:460
 kmalloc include/linux/slab.h:552 [inline]
 kzalloc include/linux/slab.h:748 [inline]
 ld_usb_probe+0x6e/0xa65 drivers/usb/misc/ldusb.c:661
 usb_probe_interface+0x305/0x7a0 drivers/usb/core/driver.c:361
 really_probe+0x281/0x650 drivers/base/dd.c:548
 driver_probe_device+0x101/0x1b0 drivers/base/dd.c:709
 __device_attach_driver+0x1c2/0x220 drivers/base/dd.c:816
 bus_for_each_drv+0x15c/0x1e0 drivers/base/bus.c:454
 __device_attach+0x217/0x360 drivers/base/dd.c:882
 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:514
 device_add+0xae6/0x16f0 drivers/base/core.c:2114
 usb_set_configuration+0xdf6/0x1670 drivers/usb/core/message.c:2023
 generic_probe+0x9d/0xd5 drivers/usb/core/generic.c:210
 usb_probe_device+0x99/0x100 drivers/usb/core/driver.c:266
 really_probe+0x281/0x650 drivers/base/dd.c:548
 driver_probe_device+0x101/0x1b0 drivers/base/dd.c:709
 __device_attach_driver+0x1c2/0x220 drivers/base/dd.c:816
 bus_for_each_drv+0x15c/0x1e0 drivers/base/bus.c:454
 __device_attach+0x217/0x360 drivers/base/dd.c:882
 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:514
 device_add+0xae6/0x16f0 drivers/base/core.c:2114
 usb_new_device.cold+0x6a4/0xe79 drivers/usb/core/hub.c:2536
 hub_port_connect drivers/usb/core/hub.c:5098 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5213 [inline]
 port_event drivers/usb/core/hub.c:5359 [inline]
 hub_event+0x1b5c/0x3640 drivers/usb/core/hub.c:5441
 process_one_work+0x92b/0x1530 kernel/workqueue.c:2269
 worker_thread+0x96/0xe20 kernel/workqueue.c:2415
 kthread+0x318/0x420 kernel/kthread.c:255
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352

Freed by task 1746:
 save_stack+0x1b/0x80 mm/kasan/common.c:69
 set_track mm/kasan/common.c:77 [inline]
 __kasan_slab_free+0x130/0x180 mm/kasan/common.c:449
 slab_free_hook mm/slub.c:1423 [inline]
 slab_free_freelist_hook mm/slub.c:1470 [inline]
 slab_free mm/slub.c:3012 [inline]
 kfree+0xe4/0x2f0 mm/slub.c:3953
 ld_usb_probe+0x728/0xa65 drivers/usb/misc/ldusb.c:744
 usb_probe_interface+0x305/0x7a0 drivers/usb/core/driver.c:361
 really_probe+0x281/0x650 drivers/base/dd.c:548
 driver_probe_device+0x101/0x1b0 drivers/base/dd.c:709
 __device_attach_driver+0x1c2/0x220 drivers/base/dd.c:816
 bus_for_each_drv+0x15c/0x1e0 drivers/base/bus.c:454
 __device_attach+0x217/0x360 drivers/base/dd.c:882
 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:514
 device_add+0xae6/0x16f0 drivers/base/core.c:2114
 usb_set_configuration+0xdf6/0x1670 drivers/usb/core/message.c:2023
 generic_probe+0x9d/0xd5 drivers/usb/core/generic.c:210
 usb_probe_device+0x99/0x100 drivers/usb/core/driver.c:266
 really_probe+0x281/0x650 drivers/base/dd.c:548
 driver_probe_device+0x101/0x1b0 drivers/base/dd.c:709
 __device_attach_driver+0x1c2/0x220 drivers/base/dd.c:816
 bus_for_each_drv+0x15c/0x1e0 drivers/base/bus.c:454
 __device_attach+0x217/0x360 drivers/base/dd.c:882
 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:514
 device_add+0xae6/0x16f0 drivers/base/core.c:2114
 usb_new_device.cold+0x6a4/0xe79 drivers/usb/core/hub.c:2536
 hub_port_connect drivers/usb/core/hub.c:5098 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5213 [inline]
 port_event drivers/usb/core/hub.c:5359 [inline]
 hub_event+0x1b5c/0x3640 drivers/usb/core/hub.c:5441
 process_one_work+0x92b/0x1530 kernel/workqueue.c:2269
 worker_thread+0x96/0xe20 kernel/workqueue.c:2415
 kthread+0x318/0x420 kernel/kthread.c:255
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352

The buggy address belongs to the object at ffff8881d67ca780
 which belongs to the cache kmalloc-512 of size 512
The buggy address is located 88 bytes inside of
 512-byte region [ffff8881d67ca780, ffff8881d67ca980)
The buggy address belongs to the page: