4.19-stable review patch. If anyone has any objections, please let me know.
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From: Gao Xiang gaoxiang25@huawei.com
From: Sheng Yong shengyong1@huawei.com
commit 3b1b5291f79d040d549d7c746669fc30e8045b9b upstream.
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@huawei.com Fixes: b17500a0fdba ("staging: erofs: introduce xattr & acl support") Cc: stable@vger.kernel.org # 4.19+ Reviewed-by: Gao Xiang gaoxiang25@huawei.com Signed-off-by: Gao Xiang gaoxiang25@huawei.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/staging/erofs/xattr.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)
--- a/drivers/staging/erofs/xattr.c +++ b/drivers/staging/erofs/xattr.c @@ -109,8 +109,11 @@ static int init_inode_xattrs(struct inod
it.page = erofs_get_meta_page(inode->i_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;