From: Florian Fuchs <fuchsfl@gmail.com>
To: Miquel Raynal <miquel.raynal@bootlin.com>,
Richard Weinberger <richard@nod.at>,
Vignesh Raghavendra <vigneshr@ti.com>,
linux-mtd@lists.infradead.org
Cc: linux-sh@vger.kernel.org, linux-kernel@vger.kernel.org,
Rich Felker <dalias@libc.org>,
John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>,
Florian Fuchs <fuchsfl@gmail.com>,
Artur Rojek <contact@artur-rojek.eu>
Subject: [PATCH v2 3/3] mtd: maps: vmu-flash: Fix NULL pointer dereference in initialization
Date: Mon, 27 Apr 2026 13:47:50 +0200 [thread overview]
Message-ID: <20260427114750.2480900-4-fuchsfl@gmail.com> (raw)
In-Reply-To: <20260427114750.2480900-1-fuchsfl@gmail.com>
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)
--
2.43.0
next prev parent reply other threads:[~2026-04-27 11:51 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-04-27 11:47 [PATCH v2 0/3] mtd: maps: vmu-flash: Fix build and runtime errors Florian Fuchs
2026-04-27 11:47 ` [PATCH v2 1/3] mtd: maps: vmu-flash: fix build error due to missing include of linux/device.h Florian Fuchs
2026-04-27 11:47 ` [PATCH v2 2/3] mtd: maps: vmu-flash: fix fault in unaligned fixup Florian Fuchs
2026-04-27 12:34 ` Miquel Raynal
2026-04-27 11:47 ` Florian Fuchs [this message]
2026-04-27 12:35 ` [PATCH v2 3/3] mtd: maps: vmu-flash: Fix NULL pointer dereference in initialization Miquel Raynal
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