From 7b279bbfd2b230c7a210ff8f405799c7e46bbf48 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Tue, 23 Mar 2021 16:19:35 +0300 Subject: [PATCH] ovl: fix missing revert_creds() on error path Smatch complains about missing that the ovl_override_creds() doesn't have a matching revert_creds() if the dentry is disconnected. Fix this by moving the ovl_override_creds() until after the disconnected check. Fixes: aa3ff3c152ff ("ovl: copy up of disconnected dentries") Signed-off-by: Dan Carpenter Signed-off-by: Miklos Szeredi --- fs/overlayfs/copy_up.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/fs/overlayfs/copy_up.c b/fs/overlayfs/copy_up.c index 0b2891c..2846b94 100644 --- a/fs/overlayfs/copy_up.c +++ b/fs/overlayfs/copy_up.c @@ -932,7 +932,7 @@ static int ovl_copy_up_one(struct dentry *parent, struct dentry *dentry, static int ovl_copy_up_flags(struct dentry *dentry, int flags) { int err = 0; - const struct cred *old_cred = ovl_override_creds(dentry->d_sb); + const struct cred *old_cred; bool disconnected = (dentry->d_flags & DCACHE_DISCONNECTED); /* @@ -943,6 +943,7 @@ static int ovl_copy_up_flags(struct dentry *dentry, int flags) if (WARN_ON(disconnected && d_is_dir(dentry))) return -EIO; + old_cred = ovl_override_creds(dentry->d_sb); while (!err) { struct dentry *next; struct dentry *parent = NULL; -- 2.7.4