diff options
| author | Eric Sandeen <sandeen@redhat.com> | 2016-03-15 11:42:47 +1100 |
|---|---|---|
| committer | Dave Chinner <david@fromorbit.com> | 2016-03-15 11:42:47 +1100 |
| commit | cc07eed8336d6452214d13e0cba770a0f5296a7f (patch) | |
| tree | c480a343183a036e4c46b02b8e4714f5aea0d9b5 | |
| parent | d34999c97ae87cd56514b8cbc6269651efe274fe (diff) | |
| download | linux-cc07eed8336d6452214d13e0cba770a0f5296a7f.tar.bz2 | |
xfs: ensure committed is initialized in xfs_trans_roll
__xfs_trans_roll() can return without setting the
*committed argument; this was a problem for xfs_bmap_finish():
int committed;/* xact committed or not */
...
error = __xfs_trans_roll(tp, ip, &committed);
if (error) {
...
if (committed) {
and we tested an uninitialized "committed" variable on the
error path. No caller is preserving "committed" state across
calls to __xfs_trans_roll(), so just initialize committed inside
the function to avoid future errors like this.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dave Chinner <david@fromorbit.com>
| -rw-r--r-- | fs/xfs/xfs_trans.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/fs/xfs/xfs_trans.c b/fs/xfs/xfs_trans.c index 748b16aff45a..20c53666cb4b 100644 --- a/fs/xfs/xfs_trans.c +++ b/fs/xfs/xfs_trans.c @@ -1028,6 +1028,8 @@ __xfs_trans_roll( struct xfs_trans_res tres; int error; + *committed = 0; + /* * Ensure that the inode is always logged. */ @@ -1082,6 +1084,6 @@ xfs_trans_roll( struct xfs_trans **tpp, struct xfs_inode *dp) { - int committed = 0; + int committed; return __xfs_trans_roll(tpp, dp, &committed); } |