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media: dvbdev: Initialize sbuf

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Because the size passed to copy_from_user() cannot be known beforehand,
it needs to be checked during runtime with check_object_size. That makes
gcc believe that the content of sbuf can be used before init.

Fix:
./include/linux/thread_info.h:215:17: warning: ‘sbuf’ may be used uninitialized [-Wmaybe-uninitialized]

Signed-off-by: Ricardo Ribalda <ribalda@chromium.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
This commit is contained in:
Ricardo Ribalda 2024-03-25 14:50:25 +00:00 committed by Hans Verkuil
parent 1820e16a30
commit 17d1316de0
1 changed files with 1 additions and 1 deletions
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2
drivers/media/dvb-core/dvbdev.c
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@ -956,7 +956,7 @@ int dvb_usercopy(struct file *file,
int (*func)(struct file *file, int (*func)(struct file *file,
unsigned int cmd, void *arg)) unsigned int cmd, void *arg))
{ {
char sbuf[128]; char sbuf[128] = {};
void *mbuf = NULL; void *mbuf = NULL;
void *parg = NULL; void *parg = NULL;
int err = -EINVAL; int err = -EINVAL;