spi: potential memleak in spidev_ioctl

'ioc' should be deallocated if __copy_from_user fails (found by Coverity
- CID 1644).

Signed-off-by: Florin Malita <fmalita@gmail.com>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/drivers/spi/spidev.c b/drivers/spi/spidev.c
index bcfef04f547e122084767751e4ced229e9f8c018..d04242aee40dd613eaa903c99fe9349a8bf418f8 100644 (file)
--- a/drivers/spi/spidev.c
+++ b/drivers/spi/spidev.c
@@ -364,6 +364,7 @@ spidev_ioctl(struct inode *inode, struct file *filp,
                        break;
                }
                if (__copy_from_user(ioc, (void __user *)arg, tmp)) {
+                       kfree(ioc);
                        retval = -EFAULT;
                        break;
                }