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>
diff --git a/fs/ocfs2/localalloc.c b/fs/ocfs2/localalloc.c
index 096cff6..857bbbc 100644
--- a/fs/ocfs2/localalloc.c
+++ b/fs/ocfs2/localalloc.c
@@ -839,7 +839,7 @@
u32 *numbits,
struct ocfs2_alloc_reservation *resv)
{
- int numfound, bitoff, left, startoff, lastzero;
+ int numfound = 0, bitoff, left, startoff, lastzero;
int local_resv = 0;
struct ocfs2_alloc_reservation r;
void *bitmap = NULL;