From: Xiubo Li <xiubli@redhat.com>
Date: Wed, 2 Mar 2022 14:51:53 +0800
Subject: ceph: fix inode reference leakage in ceph_get_snapdir()
Git-commit: 322794d3355c33adcc4feace0045d85a8e4ed813
Patch-mainline: v5.18-rc1
References: bsc#1206048
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>
Acked-by: Luis Henriques <lhenriques@suse.com>
---
fs/ceph/inode.c | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)
diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c
index 7b1e93c8a0d2..460a4fbd7a65 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 = {