[Patch] Pointer dereference in drivers/usb/misc/usblcd

From: Eric Sesterhenn
Date: Mon Jun 26 2006 - 18:57:26 EST


hi,

coverity spotted (id #185) that we still use urb, if the allocation
fails in the error path. This patch fixes this by returning directly.

Signed-off-by: Eric Sesterhenn <snakebyte@xxxxxx>

--- linux-2.6.17-git11/drivers/usb/misc/usblcd.c.orig 2006-06-27 00:52:22.000000000 +0200
+++ linux-2.6.17-git11/drivers/usb/misc/usblcd.c 2006-06-27 00:52:39.000000000 +0200
@@ -200,10 +200,8 @@ static ssize_t lcd_write(struct file *fi

/* create a urb, and a buffer for it, and copy the data to the urb */
urb = usb_alloc_urb(0, GFP_KERNEL);
- if (!urb) {
- retval = -ENOMEM;
- goto error;
- }
+ if (!urb)
+ return -ENOMEM;

buf = usb_buffer_alloc(dev->udev, count, GFP_KERNEL, &urb->transfer_dma);
if (!buf) {


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