From 553f9a9a36a600977f01bfbcc8139ce0ca419384 Mon Sep 17 00:00:00 2001
From: Mikulas Patocka <mpatocka@redhat.com>
Date: Mon, 13 Jul 2026 21:24:38 +0200
Subject: [PATCH] dm-integrity: fix wrong fallthrough in integrity_bio_wait

If dm_integrity_map_inline returned DM_MAPIO_KILL, the code would set
status BLK_STS_IOERR and then incorrectly fall through and submit the
bio. Luckily, dm_integrity_map_inline can't return DM_MAPIO_KILL at this
point, so the bug is just theoretical.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Assisted-by: Claude:claude-opus-4.6
---
 drivers/md/dm-integrity.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/md/dm-integrity.c b/drivers/md/dm-integrity.c
index e65aec9b7a28..5156079785dc 100644
--- a/drivers/md/dm-integrity.c
+++ b/drivers/md/dm-integrity.c
@@ -2782,7 +2782,8 @@ static void integrity_bio_wait(struct work_struct *w)
 		switch (r) {
 			case DM_MAPIO_KILL:
 				bio->bi_status = BLK_STS_IOERR;
-				fallthrough;
+				bio_endio(bio);
+				return;
 			case DM_MAPIO_REMAPPED:
 				submit_bio_noacct(bio);
 				fallthrough;