[PATCH] xfs_repair: resolve Coverity OVERFLOW_BEFORE_WIDEN

[Bill O'Donnell]

Coverity complains that when multiplying two 32 bit values that
eventually will be stored in a 64 bit value that it's possible
the math could overflow unless one of the values being multiplied
is type cast to the proper size.

Signed-off-by: Bill O'Donnell <billodo at redhat.com>
---
 repair/sb.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/repair/sb.c b/repair/sb.c
index 3965953..8d4843c 100644
--- a/repair/sb.c
+++ b/repair/sb.c
@@ -230,7 +230,7 @@ find_secondary_sb(xfs_sb_t *rsb)
 	do_warn(_("\nattempting to find secondary superblock...\n"));
 
 	if (verify_sb_blocksize(rsb) == 0) {
-		skip = rsb->sb_agblocks * rsb->sb_blocksize;
+		skip = (__uint64_t)rsb->sb_agblocks * rsb->sb_blocksize;
 		if (skip >= XFS_AG_MIN_BYTES && skip <= XFS_AG_MAX_BYTES)
 			retval = __find_secondary_sb(rsb, skip, skip);
 	}
-- 
2.7.4