On Thu, Nov 02, 2017 at 12:53:06PM -0700, Darrick J. Wong wrote:
> From: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
>
> The newly added xfs_scrub_da_btree_block() function has one code path
> that returns the 'error' variable without initializing it first, as
> shown by this compiler warning:
>
> fs/xfs/scrub/dabtree.c: In function 'xfs_scrub_da_btree_block':
> fs/xfs/scrub/dabtree.c:462:9: error: 'error' may be used uninitialized in this function [-Werror=maybe-uninitialized]
>
> Return zero since the caller will exit the scrub code if we don't produce a
> buffer pointer.
>
> Fixes: 7c4a07a424c1 ("xfs: scrub directory/attribute btrees")
> Reported-by: Arnd Bergmann <arnd@xxxxxxxx>
> Signed-off-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
> ---
Reviewed-by: Brian Foster <bfoster@xxxxxxxxxx>
> fs/xfs/scrub/dabtree.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/fs/xfs/scrub/dabtree.c b/fs/xfs/scrub/dabtree.c
> index c21c528..4c9839c 100644
> --- a/fs/xfs/scrub/dabtree.c
> +++ b/fs/xfs/scrub/dabtree.c
> @@ -336,7 +336,7 @@ xfs_scrub_da_btree_block(
> xfs_ino_t owner;
> int *pmaxrecs;
> struct xfs_da3_icnode_hdr nodehdr;
> - int error;
> + int error = 0;
>
> blk = &ds->state->path.blk[level];
> ds->state->path.active = level + 1;
--
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