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video: fbdev: Fix potential NULL pointer dereference 

There is a potential NULL pointer dereference in case
fb_create_modedb() fails and returns NULL.

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Rob Herring <robh@kernel.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
This commit is contained in:
YueHaibing 2019-02-08 19:24:49 +01:00 committed by Bartlomiej Zolnierkiewicz
parent 10993504d6
commit f40298444e
1 changed files with 2 additions and 0 deletions
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2
drivers/video/fbdev/core/fbmon.c
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@ -978,6 +978,8 @@ void fb_edid_to_monspecs(unsigned char *edid, struct fb_monspecs *specs)
get_monspecs(edid, specs);
specs->modedb = fb_create_modedb(edid, &specs->modedb_len, specs);
if (!specs->modedb)
return;
/*
* Workaround for buggy EDIDs that sets that the first