From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:49268 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751557AbdLUIlo (ORCPT ); Thu, 21 Dec 2017 03:41:44 -0500 Subject: Patch "IB/rxe: check for allocation failure on elem" has been added to the 4.9-stable tree To: colin.king@canonical.com, alexander.levin@verizon.com, dledford@redhat.com, gregkh@linuxfoundation.org Cc: , From: Date: Thu, 21 Dec 2017 09:40:27 +0100 Message-ID: <1513845627186168@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled IB/rxe: check for allocation failure on elem to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: ib-rxe-check-for-allocation-failure-on-elem.patch and it can be found in the queue-4.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From foo@baz Thu Dec 21 09:02:40 CET 2017 From: Colin Ian King Date: Fri, 8 Sep 2017 15:37:45 +0100 Subject: IB/rxe: check for allocation failure on elem From: Colin Ian King [ Upstream commit 4831ca9e4a8e48cb27e0a792f73250390827a228 ] The allocation for elem may fail (especially because we're using GFP_ATOMIC) so best to check for a null return. This fixes a potential null pointer dereference when assigning elem->pool. Detected by CoverityScan CID#1357507 ("Dereference null return value") Fixes: 8700e3e7c485 ("Soft RoCE driver") Signed-off-by: Colin Ian King Signed-off-by: Doug Ledford Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- drivers/infiniband/sw/rxe/rxe_pool.c | 2 ++ 1 file changed, 2 insertions(+) --- a/drivers/infiniband/sw/rxe/rxe_pool.c +++ b/drivers/infiniband/sw/rxe/rxe_pool.c @@ -412,6 +412,8 @@ void *rxe_alloc(struct rxe_pool *pool) elem = kmem_cache_zalloc(pool_cache(pool), (pool->flags & RXE_POOL_ATOMIC) ? GFP_ATOMIC : GFP_KERNEL); + if (!elem) + return NULL; elem->pool = pool; kref_init(&elem->ref_cnt); Patches currently in stable-queue which might be from colin.king@canonical.com are queue-4.9/ib-rxe-check-for-allocation-failure-on-elem.patch