This is a note to let you know that I have just added a patch titled
rbd: Fix error recovery in rbd_obj_read_sync()
to the linux-3.16.y-queue branch of the 3.16.y-ckt extended stable tree
which can be found at:
http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.16.y-queue
This patch is scheduled to be released in version 3.16.7-ckt2.
If you, or anyone else, feels it should not be added to this tree, please
reply to this email.
For more information about the 3.16.y-ckt tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable
Thanks.
-Luis
------
>From c71e0efe1eeb425d5c5c21f491455522737b3e2c Mon Sep 17 00:00:00 2001
From: Jan Kara <j...@suse.cz>
Date: Wed, 22 Oct 2014 09:17:24 +0200
Subject: rbd: Fix error recovery in rbd_obj_read_sync()
commit a8d4205623ae965e36c68629db306ca0695a2771 upstream.
When we fail to allocate page vector in rbd_obj_read_sync() we just
basically ignore the problem and continue which will result in an oops
later. Fix the problem by returning proper error.
CC: Yehuda Sadeh <yeh...@inktank.com>
CC: Sage Weil <s...@inktank.com>
CC: ceph-devel@vger.kernel.org
Coverity-id: 1226882
Signed-off-by: Jan Kara <j...@suse.cz>
Signed-off-by: Ilya Dryomov <idryo...@redhat.com>
Signed-off-by: Luis Henriques <luis.henriq...@canonical.com>
---
drivers/block/rbd.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index 9dc02c429771..a15500662f4c 100644
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -3389,7 +3389,7 @@ static int rbd_obj_read_sync(struct rbd_device *rbd_dev,
page_count = (u32) calc_pages_for(offset, length);
pages = ceph_alloc_page_vector(page_count, GFP_KERNEL);
if (IS_ERR(pages))
- ret = PTR_ERR(pages);
+ return PTR_ERR(pages);
ret = -ENOMEM;
obj_request = rbd_obj_request_create(object_name, offset, length,
--
2.1.0
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