From: Coly Li <colyli@xxxxxxxxxx> [ Upstream commit 7e76336e14de9a2b67af96012ddd46c5676cf340 ] In _badblocks_check(), there are lines of code like this, 1246 sectors -= len; [snipped] 1251 WARN_ON(sectors < 0); The WARN_ON() at line 1257 doesn't make sense because sectors is unsigned long long type and never to be <0. Fix it by checking directly checking whether sectors is less than len. Reported-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx> Signed-off-by: Coly Li <colyli@xxxxxxxxxx> Reviewed-by: Yu Kuai <yukuai3@xxxxxxxxxx> Link: https://lore.kernel.org/r/20250309160556.42854-1-colyli@xxxxxxxxxx Signed-off-by: Jens Axboe <axboe@xxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- block/badblocks.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/block/badblocks.c b/block/badblocks.c index db4ec8b9b2a8c..a9709771a1015 100644 --- a/block/badblocks.c +++ b/block/badblocks.c @@ -1349,14 +1349,15 @@ static int _badblocks_check(struct badblocks *bb, sector_t s, int sectors, len = sectors; update_sectors: + /* This situation should never happen */ + WARN_ON(sectors < len); + s += len; sectors -= len; if (sectors > 0) goto re_check; - WARN_ON(sectors < 0); - if (unacked_badblocks > 0) rv = -1; else if (acked_badblocks > 0) -- 2.39.5
