diff options
| author | Hillf Danton <hdanton@sina.com> | 2019-07-30 17:24:36 +0800 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2019-07-30 12:32:21 +0200 |
| commit | 5d78e1c2b7f4be00bbe62141603a631dc7812f35 (patch) | |
| tree | a8683285968440511b1e525b79fa743c6c92cc9e /lib/muldi3.c | |
| parent | 37151a41df800493cfcbbef4f7208ffe04feb959 (diff) | |
ALSA: usb-audio: Fix gpf in snd_usb_pipe_sanity_check
syzbot found the following crash on:
general protection fault: 0000 [#1] SMP KASAN
RIP: 0010:snd_usb_pipe_sanity_check+0x80/0x130 sound/usb/helper.c:75
Call Trace:
snd_usb_motu_microbookii_communicate.constprop.0+0xa0/0x2fb sound/usb/quirks.c:1007
snd_usb_motu_microbookii_boot_quirk sound/usb/quirks.c:1051 [inline]
snd_usb_apply_boot_quirk.cold+0x163/0x370 sound/usb/quirks.c:1280
usb_audio_probe+0x2ec/0x2010 sound/usb/card.c:576
usb_probe_interface+0x305/0x7a0 drivers/usb/core/driver.c:361
really_probe+0x281/0x650 drivers/base/dd.c:548
....
It was introduced in commit 801ebf1043ae for checking pipe and endpoint
types. It is fixed by adding a check of the ep pointer in question.
BugLink: https://syzkaller.appspot.com/bug?extid=d59c4387bfb6eced94e2
Reported-by: syzbot <syzbot+d59c4387bfb6eced94e2@syzkaller.appspotmail.com>
Fixes: 801ebf1043ae ("ALSA: usb-audio: Sanity checks for each pipe and EP types")
Cc: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: Hillf Danton <hdanton@sina.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'lib/muldi3.c')
0 files changed, 0 insertions, 0 deletions