Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 3.17 293/319] rbd: Fix error recovery in rbd_obj_read_sync() | Date | Wed, 12 Nov 2014 10:17:11 +0900 |
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3.17-stable review patch. If anyone has any objections, please let me know.
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From: Jan Kara <jack@suse.cz>
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 <yehuda@inktank.com> CC: Sage Weil <sage@inktank.com> CC: ceph-devel@vger.kernel.org Coverity-id: 1226882 Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Ilya Dryomov <idryomov@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- drivers/block/rbd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/block/rbd.c +++ b/drivers/block/rbd.c @@ -3382,7 +3382,7 @@ static int rbd_obj_read_sync(struct rbd_ 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,
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