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authorJulia Lawall <julia@diku.dk>2009-08-06 22:05:18 +0200
committerMarcel Holtmann <marcel@holtmann.org>2009-08-22 14:33:22 -0700
commit5959809ded86e267c1a95fb44738a224c30d3434 (patch)
tree73cbd8c5a91c34d1df743dfc15d1cf954ed8d4fe
parent3318b2362bf0528be77123c480249663557dfbfc (diff)
Bluetooth: Add missing kmalloc NULL tests to Marvell driver
Check that the result of kmalloc is not NULL before dereferencing it. The patch also replaces kmalloc + memset by kzalloc. 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 <julia@diku.dk> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
-rw-r--r--drivers/bluetooth/btmrvl_sdio.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/bluetooth/btmrvl_sdio.c b/drivers/bluetooth/btmrvl_sdio.c
index 1cfa8b4..5b33b85 100644
--- a/drivers/bluetooth/btmrvl_sdio.c
+++ b/drivers/bluetooth/btmrvl_sdio.c
@@ -777,8 +777,9 @@ static int btmrvl_sdio_host_to_card(struct btmrvl_private *priv,
buf = payload;
if ((unsigned long) payload & (BTSDIO_DMA_ALIGN - 1)) {
tmpbufsz = ALIGN_SZ(nb, BTSDIO_DMA_ALIGN);
- tmpbuf = kmalloc(tmpbufsz, GFP_KERNEL);
- memset(tmpbuf, 0, tmpbufsz);
+ tmpbuf = kzalloc(tmpbufsz, GFP_KERNEL);
+ if (!tmpbuf)
+ return -ENOMEM;
buf = (u8 *) ALIGN_ADDR(tmpbuf, BTSDIO_DMA_ALIGN);
memcpy(buf, payload, nb);
}