diff options
| author | Julia Lawall <julia@diku.dk> | 2010-10-28 02:33:28 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-10-28 05:03:08 +0400 |
| commit | f35691062a138484b51bf53b36ae8a4495d8fb91 (patch) | |
| tree | afa11d85cb32adaa425bb8e6f5ad60bf83c3fdc7 | |
| parent | f11b478d461b7113eb4603b3914aaf15b7788e87 (diff) | |
| download | linux-f35691062a138484b51bf53b36ae8a4495d8fb91.tar.xz | |
drivers/video/gbefb.c: eliminate memory leak
This code is preceded by a call to framebuffer_alloc, which allocates
memory, so this memory should be freed before leaving the function in an
error case. out_release_framebuffer just frees the frame buffer and
returns.
A simplified version of the semantic match that finds this problem is:
(http://coccinelle.lip6.fr/)
// <smpl>
@r exists@
local idexpression x;
expression E;
identifier f1;
iterator I;
@@
x = framebuffer_alloc(...);
<... when != x
when != true (x == NULL || ...)
when != if (...) { <+...x...+> }
when != I (...) { <+...x...+> }
(
x == NULL
|
x == E
|
x->f1
)
...>
* return ...;
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Arnaud Patard <arnaud.patard@rtp-net.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | drivers/video/gbefb.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/video/gbefb.c b/drivers/video/gbefb.c index ca3355e430bf..933899dca33a 100644 --- a/drivers/video/gbefb.c +++ b/drivers/video/gbefb.c @@ -1143,8 +1143,10 @@ static int __devinit gbefb_probe(struct platform_device *p_dev) return -ENOMEM; #ifndef MODULE - if (fb_get_options("gbefb", &options)) - return -ENODEV; + if (fb_get_options("gbefb", &options)) { + ret = -ENODEV; + goto out_release_framebuffer; + } gbefb_setup(options); #endif |