mdadm/SOURCES/0153-super-intel-fix-compilation-error.patch

From 734de8b02022bf3b7a5f2111f5314a87ddebcc83 Mon Sep 17 00:00:00 2001
From: Kinga Stefaniuk <kinga.stefaniuk@intel.com>
Date: Tue, 6 Aug 2024 11:14:02 +0200
Subject: [PATCH 153/157] super-intel: fix compilation error
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Fix compilation error:

super-intel.c: In function ‘end_migration’:
super-intel.c:4360:29: error: writing 2 bytes into a region
			of size 0 [-Werror=stringop-overflow=]
 4360 |         dev->vol.migr_state = 0;
      |         ~~~~~~~~~~~~~~~~~~~~^~~
cc1: note: destination object is likely at address zero
cc1: all warnings being treated as errors
make: *** [Makefile:232: super-intel.o] Error 1

reported, when GCC 14 is used. Return when dev is NULL, to avoid it.

Signed-off-by: Kinga Stefaniuk <kinga.stefaniuk@intel.com>
---
 super-intel.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/super-intel.c b/super-intel.c
index ab9b5d3f..f6745e10 100644
--- a/super-intel.c
+++ b/super-intel.c
@@ -4330,6 +4330,12 @@ static void migrate(struct imsm_dev *dev, struct intel_super *super,
 static void end_migration(struct imsm_dev *dev, struct intel_super *super,
 			  __u8 map_state)
 {
+	/* To avoid compilation error, saying dev can't be NULL when
+	 * migr_state is assigned.
+	 */
+	if (dev == NULL)
+		return;
+
 	struct imsm_map *map = get_imsm_map(dev, MAP_0);
 	struct imsm_map *prev = get_imsm_map(dev, dev->vol.migr_state == 0 ?
 						    MAP_0 : MAP_1);
-- 
2.41.0