ALSA: pcm: fix divide error in snd_pcm_lib_ioctl
authorZubin Mithra <zsm@chromium.org>
Fri, 27 Aug 2021 15:37:35 +0000 (08:37 -0700)
committerTakashi Iwai <tiwai@suse.de>
Fri, 27 Aug 2021 20:34:12 +0000 (22:34 +0200)
commitf3eef46f0518a2b32ca1244015820c35a22cfe4a
tree4f5c56b7075f46985196fd7aaf046aca6e7260f2
parent93ab3eafb0b3551c54175cb38afed3b82356a047
ALSA: pcm: fix divide error in snd_pcm_lib_ioctl

Syzkaller reported a divide error in snd_pcm_lib_ioctl. fifo_size
is of type snd_pcm_uframes_t(unsigned long). If frame_size
is 0x100000000, the error occurs.

Fixes: a9960e6a293e ("ALSA: pcm: fix fifo_size frame calculation")
Signed-off-by: Zubin Mithra <zsm@chromium.org>
Reviewed-by: Guenter Roeck <groeck@chromium.org>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20210827153735.789452-1-zsm@chromium.org
Signed-off-by: Takashi Iwai <tiwai@suse.de>
sound/core/pcm_lib.c