linux-kernel - [PATCH 1/4] drivers/staging/usbip/userspace/libsrc/vhci_driver.c: test the just-initialized value

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <1314021636-11528-1-git-send-email-julia@diku.dk>
Date:	Mon, 22 Aug 2011 16:00:33 +0200
From:	Julia Lawall <julia@...u.dk>
To:	Matt Mooney <mfm@...eddisk.com>
Cc:	kernel-janitors@...r.kernel.org,
	Greg Kroah-Hartman <gregkh@...e.de>, linux-usb@...r.kernel.org,
	devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org
Subject: [PATCH 1/4] drivers/staging/usbip/userspace/libsrc/vhci_driver.c: test the just-initialized value

From: Julia Lawall <julia@...u.dk>

Test the just-initialized value rather than some other one.

The semantic match that finds this problem is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@r@
identifier x,y,f!={PTR_ERR,ERR_PTR,ERR_CAST};
statement S;
@@

x = f(...);
(
if (\(x == NULL\|IS_ERR(x)\)) S
|
*if (\(y == NULL\|IS_ERR(y)\))
 { ... when != x
   return ...; }
)
// </smpl>

Signed-off-by: Julia Lawall <julia@...u.dk>

---
 drivers/staging/usbip/userspace/libsrc/vhci_driver.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/staging/usbip/userspace/libsrc/vhci_driver.c b/drivers/staging/usbip/userspace/libsrc/vhci_driver.c
index abbc285..2697877 100644
--- a/drivers/staging/usbip/userspace/libsrc/vhci_driver.c
+++ b/drivers/staging/usbip/userspace/libsrc/vhci_driver.c
@@ -133,7 +133,7 @@ static int check_usbip_device(struct sysfs_class_device *cdev)
 			     strlen(vhci_driver->hc_device->path))) {
 			/* found usbip device */
 			usbip_cdev = calloc(1, sizeof(*usbip_cdev));
-			if (!cdev) {
+			if (!usbip_cdev) {
 				dbg("calloc failed");
 				return -1;
 			}

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/