On Aug 6, 2009, at 3:04 PM, Julia Lawall wrote:
From: Julia Lawall <ju...@diku.dk>
Check that the result of kmalloc/kzalloc is not NULL before
dereferencing it.
The semantic match that finds this problem is as follows:
(http://coccinelle.lip6.fr/)
// <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 <ju...@diku.dk>
---
arch/powerpc/sysdev/fsl_rio.c | 18 ++++++++++++++----
1 files changed, 14 insertions(+), 4 deletions(-)
applied to next
- k
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