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2023-12-09 b22da3d8526a935aa31e086e63f60ff3246cb61c

 kernel/drivers/md/dm-raid1.c
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@@ -83,7 +83,7 @@
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 	struct work_struct trigger_event;
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 	unsigned nr_mirrors;
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-	struct mirror mirror[0];
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+	struct mirror mirror[];
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 };
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 DECLARE_DM_KCOPYD_THROTTLE_WITH_MODULE_PARM(raid1_resync_throttle,
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@@ -779,7 +779,7 @@
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 			wakeup_mirrord(ms);
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 		} else {
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 			map_bio(get_default_mirror(ms), bio);
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-			generic_make_request(bio);
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+			submit_bio_noacct(bio);
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 		}
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 	}
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 }
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@@ -878,12 +878,9 @@
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 					struct dm_target *ti,
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 					struct dm_dirty_log *dl)
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 {
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-	size_t len;
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-	struct mirror_set *ms = NULL;
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+	struct mirror_set *ms =
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+		kzalloc(struct_size(ms, mirror, nr_mirrors), GFP_KERNEL);
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-	len = sizeof(*ms) + (sizeof(ms->mirror[0]) * nr_mirrors);
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-
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-	ms = kzalloc(len, GFP_KERNEL);
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 	if (!ms) {
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 		ti->error = "Cannot allocate mirror context";
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 		return NULL;