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ALSA: synth: missing check for possible NULL after the call to kstrdup

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commit d159037abbe3412285c271bdfb9cdf19e62678ff upstream.

If kcalloc() return NULL due to memory starvation, it is possible for
kstrdup() to return NULL in similar case. So add null check after the call
to kstrdup() is made.

[ minor coding-style fix by tiwai ]

Signed-off-by: Austin Kim <austin.kim@lge.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20211109003742.GA5423@raspberrypi
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Austin Kim 2021-11-09 00:37:42 +00:00 committed by Greg Kroah-Hartman
parent ecd536c57a
commit 7c6fd52504
1 changed files with 1 additions and 1 deletions
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2
sound/synth/emux/emux.c
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@ -88,7 +88,7 @@ int snd_emux_register(struct snd_emux *emu, struct snd_card *card, int index, ch
emu->name = kstrdup(name, GFP_KERNEL);
emu->voices = kcalloc(emu->max_voices, sizeof(struct snd_emux_voice),
GFP_KERNEL);
if (emu->voices == NULL)
if (emu->name == NULL || emu->voices == NULL)
return -ENOMEM;
/* create soundfont list */