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| author |   Sudip Mukherjee <sudipm.mukherjee@gmail.com> | 2015-02-12 21:17:36 +0530 |
|---|---|---|
| committer |   Tomi Valkeinen <tomi.valkeinen@ti.com> | 2015-02-26 10:23:15 +0200 |
| commit | d746b40c64619f5064ebbe545938062481ef5183 (patch) | |
| tree | d5365d93c9d59752dcdf92807220034c0f9e0e37 /drivers/video/fbdev/core | |
| parent | video: ARM CLCD: Add missing error check for devm_kzalloc (diff) | |
| download | wireguard-linux-d746b40c64619f5064ebbe545938062481ef5183.tar.xz wireguard-linux-d746b40c64619f5064ebbe545938062481ef5183.zip | |
video: fbdev: fix possible null dereference
we were dereferencing edid first and the NULL check was after
accessing that. now we are using edid only if we know that
it is not NULL.
Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Diffstat (limited to 'drivers/video/fbdev/core')
| -rw-r--r-- | drivers/video/fbdev/core/fbmon.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/video/fbdev/core/fbmon.c b/drivers/video/fbdev/core/fbmon.c index 95338593ebf4..868facdec638 100644 --- a/drivers/video/fbdev/core/fbmon.c +++ b/drivers/video/fbdev/core/fbmon.c @@ -624,9 +624,6 @@ static struct fb_videomode *fb_create_modedb(unsigned char *edid, int *dbsize, int num = 0, i, first = 1; int ver, rev; - ver = edid[EDID_STRUCT_VERSION]; - rev = edid[EDID_STRUCT_REVISION]; - mode = kzalloc(50 * sizeof(struct fb_videomode), GFP_KERNEL); if (mode == NULL) return NULL; @@ -637,6 +634,9 @@ static struct fb_videomode *fb_create_modedb(unsigned char *edid, int *dbsize, return NULL; } + ver = edid[EDID_STRUCT_VERSION]; + rev = edid[EDID_STRUCT_REVISION]; + *dbsize = 0; DPRINTK(" Detailed Timings\n"); |