From: Miklos Szeredi <miklos@szeredi.hu>
Date: Wed, 22 Aug 2018 08:55:22 +0000 (+0200)
Subject: ovl: set I_CREATING on inode being created
X-Git-Tag: v4.18.13~25
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=a6aa74c2ad61278ebd419b36aecb7806070d1555;p=users%2Fdwmw2%2Flinux.git

ovl: set I_CREATING on inode being created

commit 6faf05c2b2b4fe70d9068067437649401531de0a upstream.

...otherwise there will be list corruption due to inode_sb_list_add() being
called for inode already on the sb list.

Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Fixes: e950564b97fd ("vfs: don't evict uninitialized inode")
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
To: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/fs/overlayfs/dir.c b/fs/overlayfs/dir.c
index f480b1a2cd2e5..da9b3ccfde235 100644
--- a/fs/overlayfs/dir.c
+++ b/fs/overlayfs/dir.c
@@ -601,6 +601,10 @@ static int ovl_create_object(struct dentry *dentry, int mode, dev_t rdev,
 	if (!inode)
 		goto out_drop_write;
 
+	spin_lock(&inode->i_lock);
+	inode->i_state |= I_CREATING;
+	spin_unlock(&inode->i_lock);
+
 	inode_init_owner(inode, dentry->d_parent->d_inode, mode);
 	attr.mode = inode->i_mode;