Commit 1f08529c authored Oct 29, 2019 by Al Viro Committed by Ilya Dryomov Oct 29, 2019

ceph: add missing check in d_revalidate snapdir handling



We should not play with dcache without parent locked...

Cc: stable@vger.kernel.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>

parent aa8dd816

fs/ceph/inode.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -1434,6 +1434,7 @@ retry_lookup:
		dout(" final dn %p\n", dn);
		} else if ((req->r_op == CEPH_MDS_OP_LOOKUPSNAP \|\|
		req->r_op == CEPH_MDS_OP_MKSNAP) &&
		test_bit(CEPH_MDS_R_PARENT_LOCKED, &req->r_req_flags) &&
		!test_bit(CEPH_MDS_R_ABORTED, &req->r_req_flags)) {
		struct inode *dir = req->r_parent;

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