From: Xiaoke Wang Date: Fri, 4 Mar 2022 08:38:20 +0000 (+0800) Subject: ALSA: lola: add a check for the return of vmalloc() X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=d7f15befac809ba365742464e1b0bebf07149c58;p=linux.git ALSA: lola: add a check for the return of vmalloc() vmalloc() is a memory allocation function which can return NULL when some internal memory errors happen. So it is better to check the return of it to catch the error in time. Signed-off-by: Xiaoke Wang Link: https://lore.kernel.org/r/tencent_4221FC4089F6DF01C48F192E5784038BA205@qq.com Signed-off-by: Takashi Iwai --- diff --git a/sound/pci/lola/lola_mixer.c b/sound/pci/lola/lola_mixer.c index e2c8f14170016..6b162489cb5f6 100644 --- a/sound/pci/lola/lola_mixer.c +++ b/sound/pci/lola/lola_mixer.c @@ -121,6 +121,8 @@ int lola_init_mixer_widget(struct lola *chip, int nid) /* reserve memory to copy mixer data for sleep mode transitions */ chip->mixer.array_saved = vmalloc(sizeof(struct lola_mixer_array)); + if (!chip->mixer.array_saved) + return -ENOMEM; /* mixer matrix sources are physical input data and play streams */ chip->mixer.src_stream_outs = chip->pcm[PLAY].num_streams;