dm_stats_print() emits each row as "<start_sector>+<length> counters". For a region whose length is not an exact multiple of the configured step, the last row is shorter than step. The code already clips the row end to s->end, but still prints step as the length.
Print end - start so the final partial row describes the range that is actually covered by that row. Assisted-by: Codex:gpt-5.5-cyber-preview Signed-off-by: Samuel Moelius <[email protected]> --- drivers/md/dm-stats.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/md/dm-stats.c b/drivers/md/dm-stats.c index c53cf07ab7b0..99e767f892a0 100644 --- a/drivers/md/dm-stats.c +++ b/drivers/md/dm-stats.c @@ -895,7 +895,7 @@ static int dm_stats_print(struct dm_stats *stats, int id, DMEMIT("%llu+%llu %llu %llu %llu %llu %llu %llu %llu %llu %d %llu %llu %llu %llu", (unsigned long long)start, - (unsigned long long)step, + (unsigned long long)(end - start), shared->tmp.ios[READ], shared->tmp.merges[READ], shared->tmp.sectors[READ], -- 2.43.0
