If hash size is less than device's tuple size, dm-integrity is supposed to zero the remaining space. There was a bug in the code that zeroing didn't work. This commit fixes it.
Signed-off-by: Mikulas Patocka <[email protected]> Assisted-by: Claude:claude-opus-4.6 Fixes: fb0987682c62 ("dm-integrity: introduce the Inline mode") Cc: [email protected] --- drivers/md/dm-integrity.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) Index: linux-2.6/drivers/md/dm-integrity.c =================================================================== --- linux-2.6.orig/drivers/md/dm-integrity.c 2026-04-27 19:06:34.000000000 +0200 +++ linux-2.6/drivers/md/dm-integrity.c 2026-06-22 16:33:32.000000000 +0200 @@ -2606,7 +2606,7 @@ skip_spinlock: struct bio_vec bv = bio_iter_iovec(bio, dio->bio_details.bi_iter); const char *mem = integrity_kmap(ic, bv.bv_page); if (ic->tag_size < ic->tuple_size) - memset(dio->integrity_payload + pos + ic->tag_size, 0, ic->tuple_size - ic->tuple_size); + memset(dio->integrity_payload + pos + ic->tag_size, 0, ic->tuple_size - ic->tag_size); integrity_sector_checksum(ic, &dio->ahash_req, dio->bio_details.bi_iter.bi_sector, mem, bv.bv_offset, dio->integrity_payload + pos); integrity_kunmap(ic, mem); pos += ic->tuple_size;
