The patch below does not apply to the 4.19-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable@xxxxxxxxxxxxxxx>.
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
>From 3b1b5291f79d040d549d7c746669fc30e8045b9b Mon Sep 17 00:00:00 2001
From: Sheng Yong <shengyong1@xxxxxxxxxx>
Date: Thu, 14 Feb 2019 14:46:36 +0800
Subject: [PATCH] staging: erofs: fix memleak of inode's shared xattr array
If it fails to read a shared xattr page, the inode's shared xattr array
is not freed. The next time the inode's xattr is accessed, the previously
allocated array is leaked.
Signed-off-by: Sheng Yong <shengyong1@xxxxxxxxxx>
Fixes: b17500a0fdba ("staging: erofs: introduce xattr & acl support")
Cc: <stable@xxxxxxxxxxxxxxx> # 4.19+
Reviewed-by: Gao Xiang <gaoxiang25@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
diff --git a/drivers/staging/erofs/xattr.c b/drivers/staging/erofs/xattr.c
index e748df8d2b44..8c48b0ab31fd 100644
--- a/drivers/staging/erofs/xattr.c
+++ b/drivers/staging/erofs/xattr.c
@@ -111,8 +111,11 @@ static int init_inode_xattrs(struct inode *inode)
it.page = erofs_get_meta_page(sb,
++it.blkaddr, S_ISDIR(inode->i_mode));
- if (IS_ERR(it.page))
+ if (IS_ERR(it.page)) {
+ kfree(vi->xattr_shared_xattrs);
+ vi->xattr_shared_xattrs = NULL;
return PTR_ERR(it.page);
+ }
it.kaddr = kmap_atomic(it.page);
atomic_map = true;
