From: syzbot <syzbot+403741a091bf41d4ae79@syzkaller.appspotmail.com>
To: andreyknvl@google.com, benjamin.tissoires@redhat.com,
jikos@kernel.org, linux-input@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org,
syzkaller-bugs@googlegroups.com
Subject: KASAN: slab-out-of-bounds Write in ga_probe
Date: Mon, 16 Sep 2019 06:29:10 -0700 [thread overview]
Message-ID: <000000000000cd1def0592ab9697@google.com> (raw)
Hello,
syzbot found the following crash on:
HEAD commit: f0df5c1b 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=14045831600000
kernel config: https://syzkaller.appspot.com/x/.config?x=5c6633fa4ed00be5
dashboard link: https://syzkaller.appspot.com/bug?extid=403741a091bf41d4ae79
compiler: gcc (GCC) 9.0.0 20181231 (experimental)
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=13c1e62d600000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=166a3a95600000
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+403741a091bf41d4ae79@syzkaller.appspotmail.com
usb 1-1: config 0 interface 0 altsetting 0 has 1 endpoint descriptor,
different from the interface descriptor's value: 9
usb 1-1: New USB device found, idVendor=0e8f, idProduct=0012, bcdDevice=
0.00
usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
usb 1-1: config 0 descriptor??
greenasia 0003:0E8F:0012.0001: unknown main item tag 0x0
greenasia 0003:0E8F:0012.0001: hidraw0: USB HID v0.00 Device [HID
0e8f:0012] on usb-dummy_hcd.0-1/input0
==================================================================
BUG: KASAN: slab-out-of-bounds in set_bit
include/asm-generic/bitops-instrumented.h:28 [inline]
BUG: KASAN: slab-out-of-bounds in gaff_init drivers/hid/hid-gaff.c:97
[inline]
BUG: KASAN: slab-out-of-bounds in ga_probe+0x1fd/0x6f0
drivers/hid/hid-gaff.c:146
Write of size 8 at addr ffff8881d9acafc0 by task kworker/1:1/78
CPU: 1 PID: 78 Comm: kworker/1:1 Not tainted 5.3.0-rc7+ #0
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
print_address_description+0x6a/0x32c mm/kasan/report.c:351
__kasan_report.cold+0x1a/0x33 mm/kasan/report.c:482
kasan_report+0xe/0x12 mm/kasan/common.c:618
check_memory_region_inline mm/kasan/generic.c:185 [inline]
check_memory_region+0x128/0x190 mm/kasan/generic.c:192
set_bit include/asm-generic/bitops-instrumented.h:28 [inline]
gaff_init drivers/hid/hid-gaff.c:97 [inline]
ga_probe+0x1fd/0x6f0 drivers/hid/hid-gaff.c:146
hid_device_probe+0x2be/0x3f0 drivers/hid/hid-core.c:2209
really_probe+0x281/0x6d0 drivers/base/dd.c:548
driver_probe_device+0x101/0x1b0 drivers/base/dd.c:721
__device_attach_driver+0x
---
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
next reply other threads:[~2019-09-16 13:29 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-16 13:29 syzbot [this message]
2019-09-17 18:24 ` KASAN: slab-out-of-bounds Write in ga_probe Alan Stern
2019-09-17 18:24 ` Alan Stern
2019-09-18 11:26 ` Andrey Konovalov
2019-09-18 12:07 ` syzbot
2019-09-19 17:05 ` Andrey Konovalov
2019-09-19 19:19 ` Alan Stern
2019-09-19 19:19 ` Alan Stern
2019-10-03 18:53 ` [PATCH] HID: Fix assumption that devices have inputs Alan Stern
2019-10-04 15:47 ` Benjamin Tissoires
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