lkml.org 
[lkml]   [2013]   [Jan]   [18]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH] udl: zero out struct fb_deferred_io on allocation
Date
Ensure all fields of the struct fb_deferred_io are zeroed out on init,
otherwise the fbdefio->first_io function pointer can contain garbage,
and fb_deferred_io_mkwrite() will end up jumping to this garbage address.

Signed-off-by: Nickolai Zeldovich <nickolai@csail.mit.edu>
---
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 d4ab3be..40503ba 100644
--- a/drivers/gpu/drm/udl/udl_fb.c
+++ b/drivers/gpu/drm/udl/udl_fb.c
@@ -301,7 +301,7 @@ 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;
--
1.7.10.4


\
 
 \ /
  Last update: 2013-01-18 23:41    [W:0.029 / U:0.040 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site