diff options
| author | Julia Lawall <julia@diku.dk> | 2009-11-30 20:38:19 (GMT) |
|---|---|---|
| committer | Matt Turner <mattst88@gmail.com> | 2009-11-30 20:38:19 (GMT) |
| commit | cc9a2c8301683f73b7e0d1fc2cb5159110f3469f (patch) | |
| tree | d513b100f178a0a4bf804e002d89af98f9f689c8 | |
| parent | 04d8a9db89f00dee78d792d094dc573784ead643 (diff) | |
| download | linux-cc9a2c8301683f73b7e0d1fc2cb5159110f3469f.tar.xz | |
arch/alpha/kernel: Add kmalloc NULL tests
Check that the result of kmalloc is not NULL before passing it to other
functions.
The semantic match that finds this problem is as follows:
(http://www.emn.fr/x-info/coccinelle/)
// <smpl>
@@
expression *x;
identifier f;
constant char *C;
@@
x = \(kmalloc\|kcalloc\|kzalloc\)(...);
... when != x == NULL
when != x != NULL
when != (x || ...)
(
kfree(x)
f(...,C,...,x,...)
|
*f(...,x,...)
|
*x->f
)
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Richard Henderson <rth@twiddle.net>
Signed-off-by: Matt Turner <mattst88@gmail.com>
| -rw-r--r-- | arch/alpha/kernel/core_marvel.c | 2 | ||||
| -rw-r--r-- | arch/alpha/kernel/core_titan.c | 2 |
2 files changed, 4 insertions, 0 deletions
diff --git a/arch/alpha/kernel/core_marvel.c b/arch/alpha/kernel/core_marvel.c index 8e059e5..53dd2f1 100644 --- a/arch/alpha/kernel/core_marvel.c +++ b/arch/alpha/kernel/core_marvel.c @@ -1103,6 +1103,8 @@ marvel_agp_info(void) * Allocate the info structure. */ agp = kmalloc(sizeof(*agp), GFP_KERNEL); + if (!agp) + return NULL; /* * Fill it in. diff --git a/arch/alpha/kernel/core_titan.c b/arch/alpha/kernel/core_titan.c index 7668649..219bf27 100644 --- a/arch/alpha/kernel/core_titan.c +++ b/arch/alpha/kernel/core_titan.c @@ -757,6 +757,8 @@ titan_agp_info(void) * Allocate the info structure. */ agp = kmalloc(sizeof(*agp), GFP_KERNEL); + if (!agp) + return NULL; /* * Fill it in. |