diff options
| author | Nikolay Borisov <kernel@kyup.com> | 2016-10-10 15:38:18 +0300 |
|---|---|---|
| committer | Ilya Dryomov <idryomov@gmail.com> | 2016-10-15 23:28:07 +0200 |
| commit | 0d7718f666be181fda1ba2d08f137d87c1419347 (patch) | |
| tree | 4dcea4e4b40777842736505e655dc05510bb0f2e /crypto | |
| parent | 4d73644bc3d76dd161a84e3849c6f2c9c01c4ba7 (diff) | |
ceph: fix error handling in ceph_read_iter
In case __ceph_do_getattr returns an error and the retry_op in
ceph_read_iter is not READ_INLINE, then it's possible to invoke
__free_page on a page which is NULL, this naturally leads to a crash.
This can happen when, for example, a process waiting on a MDS reply
receives sigterm.
Fix this by explicitly checking whether the page is set or not.
Cc: stable@vger.kernel.org # 3.19+
Signed-off-by: Nikolay Borisov <kernel@kyup.com>
Reviewed-by: Yan, Zheng <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Diffstat (limited to 'crypto')
0 files changed, 0 insertions, 0 deletions