Messages in this thread Patch in this message | | | From | Julia Lawall <> | Subject | [PATCH 3/4] s390/cio: add NULL test | Date | Sun, 20 Dec 2015 12:15:52 +0100 |
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Add NULL test on call to kzalloc.
The semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/)
// <smpl> @@ expression x; identifier fld; @@
* x = kzalloc(...); ... when != x == NULL x->fld // </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
--- drivers/s390/char/con3215.c | 2 ++ 1 files changed, 2 insertions(+)
diff --git a/drivers/s390/char/con3215.c b/drivers/s390/char/con3215.c index 0fc3fe5..7d82bbc 100644 --- a/drivers/s390/char/con3215.c +++ b/drivers/s390/char/con3215.c @@ -922,6 +922,8 @@ static int __init con3215_init(void) spin_lock_init(&raw3215_freelist_lock); for (i = 0; i < NR_3215_REQ; i++) { req = kzalloc(sizeof(struct raw3215_req), GFP_KERNEL | GFP_DMA); + if (!req) + return -ENOMEM; req->next = raw3215_freelist; raw3215_freelist = req; }
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