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* WARNING in usbtouch_reset_resume
@ 2019-08-05 11:58 syzbot
  2019-08-13 13:12 ` Andrey Konovalov
  0 siblings, 1 reply; 2+ messages in thread
From: syzbot @ 2019-08-05 11:58 UTC (permalink / raw)
  To: allison, andreyknvl, dmitry.torokhov, gregkh, kstewart,
	linux-input, linux-kernel, linux-usb, mpe, rfontana, rydberg,
	syzkaller-bugs, tglx


syzbot found the following crash on:

HEAD commit:    e96407b4 usb-fuzzer: main usb gadget fuzzer driver
git tree: usb-fuzzer
console output:
kernel config:
dashboard link:
compiler:       gcc (GCC) 9.0.0 20181231 (experimental)
syz repro:
C reproducer:

IMPORTANT: if you fix the bug, please add the following tag to the commit:

input: USB Touchscreen 0eef:0002 as  
usb 1-1: reset high-speed USB device number 2 using dummy_hcd
usb 1-1: Using ep0 maxpacket: 32
------------[ cut here ]------------
DEBUG_LOCKS_WARN_ON(lock->magic != lock)
WARNING: CPU: 0 PID: 12 at kernel/locking/mutex.c:912 __mutex_lock_common  
kernel/locking/mutex.c:912 [inline]
WARNING: CPU: 0 PID: 12 at kernel/locking/mutex.c:912  
__mutex_lock+0xd31/0x1360 kernel/locking/mutex.c:1077
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 12 Comm: kworker/0:1 Not tainted 5.3.0-rc2+ #25
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
  panic+0x2a3/0x6da kernel/panic.c:219
  __warn.cold+0x20/0x4a kernel/panic.c:576
  report_bug+0x262/0x2a0 lib/bug.c:186
  fixup_bug arch/x86/kernel/traps.c:179 [inline]
  fixup_bug arch/x86/kernel/traps.c:174 [inline]
  do_error_trap+0x12b/0x1e0 arch/x86/kernel/traps.c:272
  do_invalid_op+0x32/0x40 arch/x86/kernel/traps.c:291
  invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1026
RIP: 0010:__mutex_lock_common kernel/locking/mutex.c:912 [inline]
RIP: 0010:__mutex_lock+0xd31/0x1360 kernel/locking/mutex.c:1077
Code: d2 0f 85 f6 05 00 00 44 8b 05 7b de 1c 02 45 85 c0 0f 85 0a f4 ff ff  
48 c7 c6 c0 92 c6 85 48 c7 c7 60 90 c6 85 e8 f4 c4 a6 fb <0f> 0b e9 f0 f3  
ff ff 65 48 8b 1c 25 00 ef 01 00 be 08 00 00 00 48
RSP: 0018:ffff8881da20f6b0 EFLAGS: 00010286
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8128a0fd RDI: ffffed103b441ec8
RBP: ffff8881da20f820 R08: ffff8881da1f9800 R09: fffffbfff0d9ee35
R10: fffffbfff0d9ee34 R11: ffffffff86cf71a3 R12: 0000000000000000
R13: dffffc0000000000 R14: ffff8881d2e291c8 R15: ffff8881d2fba228
  usb_resume_interface drivers/usb/core/driver.c:1242 [inline]
  usb_resume_interface.isra.0+0x184/0x390 drivers/usb/core/driver.c:1210
  usb_resume_both+0x26a/0x7b0 drivers/usb/core/driver.c:1412
  __rpm_callback+0x27e/0x3c0 drivers/base/power/runtime.c:355
  rpm_callback+0x18f/0x230 drivers/base/power/runtime.c:485
  rpm_resume+0x10f7/0x1870 drivers/base/power/runtime.c:849
  __pm_runtime_resume+0x103/0x180 drivers/base/power/runtime.c:1076
  pm_runtime_get_sync include/linux/pm_runtime.h:226 [inline]
  usb_autoresume_device+0x1e/0x60 drivers/usb/core/driver.c:1599
  usb_remote_wakeup+0x7b/0xb0 drivers/usb/core/hub.c:3603
  hub_port_connect_change drivers/usb/core/hub.c:5199 [inline]
  port_event drivers/usb/core/hub.c:5359 [inline]
  hub_event+0x246c/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
Kernel Offset: disabled
Rebooting in 86400 seconds..

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2019-08-05 11:58 WARNING in usbtouch_reset_resume syzbot
2019-08-13 13:12 ` Andrey Konovalov

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