[PATCH v2 3/3] mtd: maps: vmu-flash: Fix NULL pointer dereference in initialization

Florian Fuchs
2026-04-27T11:51:29Z

The mtd_info contains a struct device, which must be linked to its
parent. Without this, the initialization of the MTD fails with a NULL
pointer dereference.

Signed-off-by: Florian Fuchs <fuchsfl@gmail.com>
---
v1->v2: no functional change

v1: https://lore.kernel.org/lkml/20251117224408.498449-4-fuchsfl@gmail.com/

drivers/mtd/maps/vmu-flash.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/drivers/mtd/maps/vmu-flash.c b/drivers/mtd/maps/vmu-flash.c
index b76d0609d1b7..10244e6731d0 100644
--- a/drivers/mtd/maps/vmu-flash.c
+++ b/drivers/mtd/maps/vmu-flash.c
@@ -547,6 +547,7 @@ static void vmu_queryblocks(struct mapleq *mq)
mpart->partition = card->partition;
mtd_cur->priv = mpart;
mtd_cur->owner = THIS_MODULE;
+ mtd_cur->dev.parent = &mdev->dev;

pcache = kzalloc_obj(struct vmu_cache);
if (!pcache)