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>

1 files changed, 2 insertions, 2 deletions

diff --git a/sound/core/info.c b/sound/core/info.c
index db308dbc8911..58e97b35cceb 100644
--- a/sound/core/info.c
+++ b/sound/core/info.c
@@ -89,7 +89,7 @@ static int resize_info_buffer(struct snd_info_buffer *buffer,
         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 @@ static int snd_info_entry_open(struct inode *inode, struct file *file)
                                 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;
                 }