tree 266cad4b91bc6eaf3be28e749e3228c1baf37a83
parent 76201b6354bb3aa31c7ba2bd42b9cbb8dda71c44
author Yan, Zheng <zyan@redhat.com> 1490772624 +0800
committer Ilya Dryomov <idryomov@gmail.com> 1493882360 +0200

ceph: fix potential use-after-free

__unregister_session() free the session if it drops the last
reference. We should grab an extra reference if we want to use
session after __unregister_session().

Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
Reviewed-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>