From 023d4ea358494ccfeb37abfe5b0fd01b45a6051c Mon Sep 17 00:00:00 2001 From: Joseph Qi Date: Tue, 14 Apr 2015 15:43:33 -0700 Subject: ocfs2: fix possible uninitialized variable access In ocfs2_local_alloc_find_clear_bits and ocfs2_get_dentry, variable numfound and set may be uninitialized and then used in tracepoint. In ocfs2_xattr_block_get and ocfs2_delete_xattr_in_bucket, variable block_off and xv may be uninitialized and then used in the following logic due to unchecked return value. This patch fixes these possible issues. Signed-off-by: Joseph Qi Cc: Mark Fasheh Cc: Joel Becker Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/ocfs2/xattr.c | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'fs/ocfs2/xattr.c') diff --git a/fs/ocfs2/xattr.c b/fs/ocfs2/xattr.c index 85b190dc132f..4ca7533be479 100644 --- a/fs/ocfs2/xattr.c +++ b/fs/ocfs2/xattr.c @@ -1238,6 +1238,10 @@ static int ocfs2_xattr_block_get(struct inode *inode, i, &block_off, &name_offset); + if (ret) { + mlog_errno(ret); + goto cleanup; + } xs->base = bucket_block(xs->bucket, block_off); } if (ocfs2_xattr_is_local(xs->here)) { @@ -5665,6 +5669,10 @@ static int ocfs2_delete_xattr_in_bucket(struct inode *inode, ret = ocfs2_get_xattr_tree_value_root(inode->i_sb, bucket, i, &xv, NULL); + if (ret) { + mlog_errno(ret); + break; + } ret = ocfs2_lock_xattr_remove_allocators(inode, xv, args->ref_ci, -- cgit v1.2.3-58-ga151