lkml.org 
[lkml]   [2019]   [Aug]   [13]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Date
SubjectRe: WARNING in usbtouch_reset_resume
On Mon, Aug 5, 2019 at 1:58 PM syzbot
<syzbot+91f7bbcce580376d784e@syzkaller.appspotmail.com> wrote:
>
> Hello,
>
> syzbot found the following crash on:
>
> HEAD commit: e96407b4 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=1104baf8600000
> kernel config: https://syzkaller.appspot.com/x/.config?x=cfa2c18fb6a8068e
> dashboard link: https://syzkaller.appspot.com/bug?extid=91f7bbcce580376d784e
> compiler: gcc (GCC) 9.0.0 20181231 (experimental)
> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14199a62600000
> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=17d94aaa600000
>
> IMPORTANT: if you fix the bug, please add the following tag to the commit:
> Reported-by: syzbot+91f7bbcce580376d784e@syzkaller.appspotmail.com
>
> input: USB Touchscreen 0eef:0002 as
> /devices/platform/dummy_hcd.0/usb1/1-1/1-1:0.180/input/input5
> 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
> usbtouch_reset_resume+0xb1/0x170
> drivers/input/touchscreen/usbtouchscreen.c:1611
> 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..

#syz dup: WARNING in usbtouch_open

>
>
> ---
> 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:
> https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
> syzbot can test patches for this bug, for details see:
> https://goo.gl/tpsmEJ#testing-patches

\
 
 \ /
  Last update: 2019-08-13 15:13    [W:0.033 / U:0.488 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site