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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 <mpatocka@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Mikulas Patocka 2018-06-03 16:40:57 +02:00 committed by Dave Airlie
parent 542bb9788a
commit 09a00abe3a
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/udl/udl_fb.c
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@ -221,7 +221,7 @@ static int udl_fb_open(struct fb_info *info, int user)
struct fb_deferred_io *fbdefio; 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) { if (fbdefio) {
fbdefio->delay = DL_DEFIO_WRITE_DELAY; fbdefio->delay = DL_DEFIO_WRITE_DELAY;