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23 October 2021, 00:29:24 UTC
Revision f065fabc864f4c98857bf67caa2365e9f8545751 authored by Julia Lawall on 31 July 2009, 06:32:03 UTC, committed by Takashi Iwai on 31 July 2009, 08:14:58 UTC 
ALSA: sound/aoa: Add kmalloc NULL tests
 
Check that the result of kzalloc is not NULL before a dereference.

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>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
1 parent 34fdeb2
History
Tip revision: f065fabc864f4c98857bf67caa2365e9f8545751 authored by Julia Lawall on 31 July 2009, 06:32:03 UTC
ALSA: sound/aoa: Add kmalloc NULL tests
Tip revision: f065fab
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