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* INFO: trying to register non-static key in ida_destroy
@ 2019-07-29 16:58 syzbot
  0 siblings, 0 replies; only message in thread
From: syzbot @ 2019-07-29 16:58 UTC (permalink / raw)
  To: andreyknvl, laurent.pinchart, linux-kernel, linux-media,
	linux-usb, mchehab, sakari.ailus, syzkaller-bugs

Hello,

syzbot found the following crash on:

HEAD commit:    7f7867ff usb-fuzzer: main usb gadget fuzzer driver
git tree:       https://github.com/google/kasan.git usb-fuzzer
console output: https://syzkaller.appspot.com/x/log.txt?x=16ee1d7c600000
kernel config:  https://syzkaller.appspot.com/x/.config?x=792eb47789f57810
dashboard link: https://syzkaller.appspot.com/bug?extid=c86454eb3af9e8a4da20
compiler:       gcc (GCC) 9.0.0 20181231 (experimental)
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=15eacab4600000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=178293c8600000

IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+c86454eb3af9e8a4da20@syzkaller.appspotmail.com

usb 1-1: config 0 interface 197 altsetting 0 bulk endpoint 0xA has invalid  
maxpacket 0
usb 1-1: New USB device found, idVendor=972f, idProduct=41a3,  
bcdDevice=d9.98
usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
usb 1-1: config 0 descriptor??
INFO: trying to register non-static key.
the code is fine but needs lockdep annotation.
turning off the locking correctness validator.
CPU: 0 PID: 12 Comm: kworker/0:1 Not tainted 5.3.0-rc2+ #23
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS  
Google 01/01/2011
Workqueue: usb_hub_wq hub_event
Call Trace:
  __dump_stack lib/dump_stack.c:77 [inline]
  dump_stack+0xca/0x13e lib/dump_stack.c:113
  assign_lock_key kernel/locking/lockdep.c:813 [inline]
  register_lock_class+0x1022/0x11d0 kernel/locking/lockdep.c:1122
  __lock_acquire+0xfc/0x3b50 kernel/locking/lockdep.c:3762
  lock_acquire+0x127/0x320 kernel/locking/lockdep.c:4412
  __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
  _raw_spin_lock_irqsave+0x32/0x50 kernel/locking/spinlock.c:159
  ida_destroy+0xb0/0x3a0 lib/idr.c:551
  media_device_cleanup+0x15/0x70 drivers/media/mc/mc-device.c:722
  uvc_delete+0x8e/0x2f0 drivers/media/usb/uvc/uvc_driver.c:1872
  kref_put include/linux/kref.h:65 [inline]
  uvc_probe+0xf95/0x64e4 drivers/media/usb/uvc/uvc_driver.c:2223
  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


---
This bug is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzkaller@googlegroups.com.

syzbot will keep track of this bug report. See:
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syzbot can test patches for this bug, for details see:
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2019-07-29 16:58 INFO: trying to register non-static key in ida_destroy syzbot

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