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| author | Joseph Qi <joseph.qi@huawei.com> | 2015-04-14 15:43:33 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-04-14 16:48:58 -0700 |
| commit | 023d4ea358494ccfeb37abfe5b0fd01b45a6051c (patch) | |
| tree | 236d2f72d3a72bc60f1cfce95c3448ad194951e2 /fs/ocfs2/xattr.c | |
| parent | 7c01ad8fe7c159d7e1ddbd8e586d4d0dfed7ab3d (diff) | |
| download | linux-023d4ea358494ccfeb37abfe5b0fd01b45a6051c.tar.gz linux-023d4ea358494ccfeb37abfe5b0fd01b45a6051c.tar.bz2 linux-023d4ea358494ccfeb37abfe5b0fd01b45a6051c.zip | |
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 <joseph.qi@huawei.com>
Cc: Mark Fasheh <mfasheh@suse.com>
Cc: Joel Becker <jlbec@evilplan.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/ocfs2/xattr.c')
| -rw-r--r-- | fs/ocfs2/xattr.c | 8 |
1 files changed, 8 insertions, 0 deletions
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, |