From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Message-Id: <20120309190209.139436408@linuxfoundation.org> Date: Fri, 09 Mar 2012 11:03:27 -0800 From: Greg KH To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: torvalds@linux-foundation.org, akpm@linux-foundation.org, alan@lxorguk.ukuu.org.uk, Jesper Juhl , Alasdair G Kergon Subject: [ 85/95] dm ioctl: do not leak argv if target message only contains whitespace In-Reply-To: <20120309194424.GA2134@kroah.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: 3.2-stable review patch. If anyone has any objections, please let me know. ------------------ From: Jesper Juhl commit 902c6a96a7cb9c50d2a8aed1788efad0a5d8f04c upstream. If 'argc' is zero we jump to the 'out:' label, but this leaks the (unused) memory that 'dm_split_args()' allocated for 'argv' if the string being split consisted entirely of whitespace. Jump to the 'out_argv:' label instead to free up that memory. Signed-off-by: Jesper Juhl Signed-off-by: Alasdair G Kergon Signed-off-by: Greg Kroah-Hartman --- drivers/md/dm-ioctl.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/md/dm-ioctl.c +++ b/drivers/md/dm-ioctl.c @@ -1437,7 +1437,7 @@ static int target_message(struct dm_ioct if (!argc) { DMWARN("Empty message received."); - goto out; + goto out_argv; } table = dm_get_live_table(md);