udl-kms: fix crash due to uninitialized memory

We must use kzalloc when allocating the fb_deferred_io structure. Otherwise, the field first_io is undefined and it causes a crash. Signed-off-by: Mikulas Patocka <[email protected]> Cc: [email protected] Signed-off-by: Dave Airlie <[email protected]>
olifre · Jul 30, 2018 · 09a00ab · 09a00ab
1 parent 542bb97
commit 09a00ab
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/drivers/gpu/drm/udl/udl_fb.c b/drivers/gpu/drm/udl/udl_fb.c
@@ -221,7 +221,7 @@ static int udl_fb_open(struct fb_info *info, int user)
 
 		struct fb_deferred_io *fbdefio;
 
-		fbdefio = kmalloc(sizeof(struct fb_deferred_io), GFP_KERNEL);
+		fbdefio = kzalloc(sizeof(struct fb_deferred_io), GFP_KERNEL);
 
 		if (fbdefio) {
 			fbdefio->delay = DL_DEFIO_WRITE_DELAY;