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

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commit d159037abb 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 Justin Hammond
parent aca03d163c
commit 09fe06db02
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 */