From 09a00abe3a9941c2715ca83eb88172cd2f54d8fd Mon Sep 17 00:00:00 2001 From: Mikulas Patocka Date: Sun, 3 Jun 2018 16:40:57 +0200 Subject: [PATCH] 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 Cc: stable@vger.kernel.org Signed-off-by: Dave Airlie --- drivers/gpu/drm/udl/udl_fb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/udl/udl_fb.c b/drivers/gpu/drm/udl/udl_fb.c index d5583190f3e4..c3f5867dac91 100644 --- 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; -- 2.11.0