ALSA: info: Avoid leaking kernel memory
Make sure that the allocated buffer for reading the proc file won't
expose the uncleared kernel memory.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/core/info.c b/sound/core/info.c
index db308db..58e97b3 100644
--- a/sound/core/info.c
+++ b/sound/core/info.c
@@ -89,7 +89,7 @@
char *nbuf;
nsize = PAGE_ALIGN(nsize);
- nbuf = krealloc(buffer->buffer, nsize, GFP_KERNEL);
+ nbuf = krealloc(buffer->buffer, nsize, GFP_KERNEL | __GFP_ZERO);
if (! nbuf)
return -ENOMEM;
@@ -353,7 +353,7 @@
goto __nomem;
data->rbuffer = buffer;
buffer->len = PAGE_SIZE;
- buffer->buffer = kmalloc(buffer->len, GFP_KERNEL);
+ buffer->buffer = kzalloc(buffer->len, GFP_KERNEL);
if (buffer->buffer == NULL)
goto __nomem;
}