linux-kernel - WARNING in gtco_input_open/usb_submit

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Message-ID: <000000000000710f7405952febe3@google.com>
Date:   Fri, 18 Oct 2019 07:12:09 -0700
From:   syzbot <syzbot+904b0592f03cbe5fd6cb@...kaller.appspotmail.com>
To:     andreyknvl@...gle.com, gregkh@...uxfoundation.org,
        gustavo@...eddedor.com, linux-kernel@...r.kernel.org,
        linux-usb@...r.kernel.org, syzkaller-bugs@...glegroups.com
Subject: WARNING in gtco_input_open/usb_submit_urb

Hello,

syzbot found the following crash on:

HEAD commit:    22be26f7 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=17f9f0cf600000
kernel config:  https://syzkaller.appspot.com/x/.config?x=387eccb7ac68ec5
dashboard link: https://syzkaller.appspot.com/bug?extid=904b0592f03cbe5fd6cb
compiler:       gcc (GCC) 9.0.0 20181231 (experimental)

Unfortunately, I don't have any reproducer for this crash yet.

IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+904b0592f03cbe5fd6cb@...kaller.appspotmail.com

------------[ cut here ]------------
usb 2-1: BOGUS urb xfer, pipe 1 != type 3
WARNING: CPU: 0 PID: 15719 at drivers/usb/core/urb.c:477  
usb_submit_urb+0x1188/0x13b0 drivers/usb/core/urb.c:477
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 15719 Comm: syz-executor.0 Not tainted 5.4.0-rc3+ #0
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
  panic+0x2aa/0x6e1 kernel/panic.c:221
  __warn.cold+0x2f/0x33 kernel/panic.c:582
  report_bug+0x27b/0x2f0 lib/bug.c:195
  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:1028
RIP: 0010:usb_submit_urb+0x1188/0x13b0 drivers/usb/core/urb.c:477
Code: 4d 85 ed 74 2c e8 48 59 ec fd 4c 89 f7 e8 00 7f 1c ff 41 89 d8 44 89  
e1 4c 89 ea 48 89 c6 48 c7 c7 20 45 18 86 e8 0d 02 c2 fd <0f> 0b e9 20 f4  
ff ff e8 1c 59 ec fd 4c 89 f2 48 b8 00 00 00 00 00
RSP: 0018:ffff8881cf18f878 EFLAGS: 00010282
RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000
RDX: 0000000000018cbe RSI: ffffffff8128bcbd RDI: ffffed1039e31f01
RBP: ffff8881d16ef780 R08: ffff8881d16b8000 R09: ffffed103b645d58
R10: ffffed103b645d57 R11: ffff8881db22eabf R12: 0000000000000001
R13: ffff8881cbbacfc0 R14: ffff8881d9b470a0 R15: ffff8881d3c8ef00
  gtco_input_open+0xd5/0x130 drivers/input/tablet/gtco.c:560
  input_open_device+0x16c/0x2c0 drivers/input/input.c:623
  evdev_open_device drivers/input/evdev.c:414 [inline]
  evdev_open+0x3fe/0x510 drivers/input/evdev.c:499
  chrdev_open+0x219/0x5c0 fs/char_dev.c:414
  do_dentry_open+0x494/0x1120 fs/open.c:797
  do_last fs/namei.c:3408 [inline]
  path_openat+0x1430/0x3ff0 fs/namei.c:3525
  do_filp_open+0x1a1/0x280 fs/namei.c:3555
  do_sys_open+0x3c0/0x580 fs/open.c:1097
  do_syscall_64+0xb7/0x580 arch/x86/entry/common.c:290
  entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x413941
Code: 75 14 b8 02 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 04 19 00 00 c3 48  
83 ec 08 e8 0a fa ff ff 48 89 04 24 b8 02 00 00 00 0f 05 <48> 8b 3c 24 48  
89 c2 e8 53 fa ff ff 48 89 d0 48 83 c4 08 48 3d 01
RSP: 002b:00007f01879317a0 EFLAGS: 00000293 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 6666666666666667 RCX: 0000000000413941
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00007f0187931850
RBP: 000000000075bfc8 R08: 000000000000000f R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 00007f01879326d4
R13: 00000000004c90c0 R14: 00000000004e06b8 R15: 00000000ffffffff
Kernel Offset: disabled
Rebooting in 86400 seconds..


---
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