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[5.17,151/343] ceph: fix inode reference leakage in ceph_get_snapdir()

Message ID 20220412062955.737159359@linuxfoundation.org
State New
Headers show
Series None | expand

Commit Message

Greg Kroah-Hartman April 12, 2022, 6:29 a.m. UTC 
From: Xiubo Li <xiubli@redhat.com>

[ Upstream commit 322794d3355c33adcc4feace0045d85a8e4ed813 ]

The ceph_get_inode() will search for or insert a new inode into the
hash for the given vino, and return a reference to it. If new is
non-NULL, its reference is consumed.

We should release the reference when in error handing cases.

Signed-off-by: Xiubo Li <xiubli@redhat.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 fs/ceph/inode.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c
index ef4a980a7bf3..c092dce0485c 100644
--- a/fs/ceph/inode.c
+++ b/fs/ceph/inode.c
@@ -87,13 +87,13 @@  struct inode *ceph_get_snapdir(struct inode *parent)
 	if (!S_ISDIR(parent->i_mode)) {
 		pr_warn_once("bad snapdir parent type (mode=0%o)\n",
 			     parent->i_mode);
-		return ERR_PTR(-ENOTDIR);
+		goto err;
 	}
 
 	if (!(inode->i_state & I_NEW) && !S_ISDIR(inode->i_mode)) {
 		pr_warn_once("bad snapdir inode type (mode=0%o)\n",
 			     inode->i_mode);
-		return ERR_PTR(-ENOTDIR);
+		goto err;
 	}
 
 	inode->i_mode = parent->i_mode;
@@ -113,6 +113,12 @@  struct inode *ceph_get_snapdir(struct inode *parent)
 	}
 
 	return inode;
+err:
+	if ((inode->i_state & I_NEW))
+		discard_new_inode(inode);
+	else
+		iput(inode);
+	return ERR_PTR(-ENOTDIR);
 }
 
 const struct inode_operations ceph_file_iops = {