Takashi Iwai b43a3e2193 ALSA: caiaq: Add a sanity check for invalid EPs ... commit 58fc7f73a8 upstream. As syzkaller spotted, currently caiaq driver submits a URB with the fixed EP without checking whether it's actually available, which may result in a kernel warning like: usb 1-1: BOGUS urb xfer, pipe 3 != type 1 ------------[ cut here ]------------ WARNING: CPU: 1 PID: 1150 at drivers/usb/core/urb.c:449 usb_submit_urb+0xf8a/0x11d0 Modules linked in: CPU: 1 PID: 1150 Comm: kworker/1:1 Not tainted 4.14.0-rc2-42660-g24b7bd59eec0 #277 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 Workqueue: usb_hub_wq hub_event Call Trace: init_card sound/usb/caiaq/device.c:467 snd_probe+0x81c/0x1150 sound/usb/caiaq/device.c:525 usb_probe_interface+0x35d/0x8e0 drivers/usb/core/driver.c:361 .... This patch adds a sanity check of validity of EPs at the device initialization phase for avoiding the call with an invalid EP. Reported-by: Andrey Konovalov <andreyknvl@google.com> Tested-by: Andrey Konovalov <andreyknvl@google.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2018-02-25 11:07:48 +01:00
..
Makefile	ALSA: snd-usb-caiaq: rename files to remove redundant information in file pathes	2009-04-14 13:31:17 +02:00
audio.c	ALSA: usb: constify snd_pcm_ops structures	2017-08-19 11:02:27 +02:00
audio.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
control.c	ALSA: snd-usb-caiaq: Fix LED commands for Kore controller	2014-09-22 08:52:14 +02:00
control.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
device.c	ALSA: caiaq: Add a sanity check for invalid EPs	2018-02-25 11:07:48 +01:00
device.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
input.c	ALSA: usb-audio: caiaq: fix endianness bug in snd_usb_caiaq_maschine_dispatch	2013-04-30 09:19:02 +02:00
input.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
midi.c	ALSA: usb: Constify snd_rawmidi_ops	2017-01-12 12:50:48 +01:00
midi.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00