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

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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
MIME-Version: 1.0
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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