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linux/sound/usb
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Hillf Danton 5d78e1c2b7 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 801ebf1043 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: 801ebf1043 ("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>
 		2019-07-30 12:32:21 +02:00
..
6fire treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
bcd2000 Linux 5.2-rc6 2019-06-26 12:39:34 +01:00
caiaq treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
hiface treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
line6 ALSA: line6: Fix a typo 2019-07-22 09:10:54 +02:00
misc treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 264 2019-06-05 17:30:28 +02:00
usx2y treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
Kconfig treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
Makefile media: sound/usb: Use Media Controller API to share media resources 2019-04-22 11:21:06 -04:00
card.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
card.h media: sound/usb: Use Media Controller API to share media resources 2019-04-22 11:21:06 -04:00
clock.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
clock.h ALSA: usb: initial USB Audio Device Class 3.0 support 2018-03-21 11:46:33 +01:00
debug.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
endpoint.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
endpoint.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
format.c ASoC: Updates for v5.3 2019-07-08 14:45:34 +02:00
format.h ALSA: usb: initial USB Audio Device Class 3.0 support 2018-03-21 11:46:33 +01:00
helper.c ALSA: usb-audio: Fix gpf in snd_usb_pipe_sanity_check 2019-07-30 12:32:21 +02:00
helper.h ALSA: usb-audio: Sanity checks for each pipe and EP types 2019-06-24 15:11:06 +02:00
media.c media: sound/usb: Use Media Controller API to share media resources 2019-04-22 11:21:06 -04:00
media.h media: sound/usb: Use Media Controller API to share media resources 2019-04-22 11:21:06 -04:00
midi.c ALSA: rawmidi: A lightweight function to discard pending bytes 2018-10-04 20:13:17 +02:00
midi.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mixer.c ASoC: Updates for v5.3 2019-07-08 14:45:34 +02:00
mixer.h media: sound/usb: Use Media Controller API to share media resources 2019-04-22 11:21:06 -04:00
mixer_maps.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
mixer_quirks.c ASoC: Updates for v5.3 2019-07-08 14:45:34 +02:00
mixer_quirks.h ALSA: usb-audio: Initialize Dell Dock playback volumes 2018-05-02 16:02:32 +02:00
mixer_scarlett.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
mixer_scarlett.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mixer_us16x08.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
mixer_us16x08.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
pcm.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
pcm.h ALSA: usb-audio: Add UAC3 Power Domains to suspend/resume 2018-07-31 15:01:36 +02:00
power.c ALSA: usb-audio: Initial Power Domain support 2018-07-31 15:01:22 +02:00
power.h ALSA: usb-audio: Initial Power Domain support 2018-07-31 15:01:22 +02:00
proc.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
proc.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
quirks-table.h ASoC: Updates for v5.3 2019-07-08 14:45:34 +02:00
quirks.c ASoC: Updates for v5.3 2019-07-08 14:45:34 +02:00
quirks.h ALSA: usb-audio: move audioformat quirks to quirks.c 2018-03-19 17:00:12 +01:00
stream.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
stream.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
usbaudio.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00