Hello,
syzbot found the following crash on:
HEAD commit: 6a3599ce 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=10334194600000
kernel config: https://syzkaller.appspot.com/x/.config?x=700ca426ab83faae
dashboard link: https://syzkaller.appspot.com/bug?extid=c7df50363aaff50aa363
compiler: gcc (GCC) 9.0.0 20181231 (experimental)
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17309e94600000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10929358600000
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+c7df50363aaff50aa363@xxxxxxxxxxxxxxxxxxxxxxxxx
------------[ cut here ]------------
usb 1-1: BOGUS urb xfer, pipe 1 != type 3
WARNING: CPU: 0 PID: 1732 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: 1732 Comm: syz-executor835 Not tainted 5.2.0-rc6+ #15
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+0x292/0x6c9 /kernel/panic.c:219
__warn.cold+0x20/0x4b /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+0x14/0x20 /arch/x86/entry/entry_64.S:986
RIP: 0010:usb_submit_urb+0x1188/0x13b0 /drivers/usb/core/urb.c:477
Code: 4d 85 ed 74 2c e8 f8 d3 f4 fd 4c 89 f7 e8 a0 51 1c ff 41 89 d8 44 89
e1 4c 89 ea 48 89 c6 48 c7 c7 00 0e f7 85 e8 83 98 ca fd <0f> 0b e9 20 f4
ff ff e8 cc d3 f4 fd 4c 89 f2 48 b8 00 00 00 00 00
RSP: 0018:ffff8881d06bf878 EFLAGS: 00010282
RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8127ef3d RDI: ffffed103a0d7f01
RBP: ffff8881d0bf5500 R08: ffff8881d2678000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001
R13: ffff8881d40b58a0 R14: ffff8881d0904d20 R15: ffff8881d3cd9900
kbtab_open+0xd5/0x130 /drivers/input/tablet/kbtab.c:96
input_open_device+0x170/0x280 /drivers/input/input.c:607
evdev_open_device /drivers/input/evdev.c:433 [inline]
evdev_open+0x3fe/0x510 /drivers/input/evdev.c:518
chrdev_open+0x219/0x5c0 /fs/char_dev.c:413
do_dentry_open+0x497/0x1040 /fs/open.c:778
do_last /fs/namei.c:3416 [inline]
path_openat+0x1430/0x3ff0 /fs/namei.c:3533
do_filp_open+0x1a1/0x280 /fs/namei.c:3563
do_sys_open+0x3c0/0x580 /fs/open.c:1070
do_syscall_64+0xb7/0x560 /arch/x86/entry/common.c:301
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4010c0
Code: 01 f0 ff ff 0f 83 00 0b 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f
44 00 00 83 3d cd 4c 2d 00 00 75 14 b8 02 00 00 00 0f 05 <48> 3d 01 f0 ff
ff 0f 83 d4 0a 00 00 c3 48 83 ec 08 e8 3a 00 00 00
RSP: 002b:00007ffd69a61888 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004010c0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00007ffd69a61890
RBP: 6666666666666667 R08: 000000000000000f R09: 000000000000000b
R10: 0000000000000075 R11: 0000000000000246 R12: 0000000000402020
R13: 00000000004020b0 R14: 0000000000000000 R15: 0000000000000000
Kernel Offset: disabled
Rebooting in 86400 seconds..
---
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