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Mon, 27 Apr 2026 04:51:15 -0700 (PDT) From: Florian Fuchs To: Miquel Raynal , Richard Weinberger , Vignesh Raghavendra , linux-mtd@lists.infradead.org Cc: linux-sh@vger.kernel.org, linux-kernel@vger.kernel.org, Rich Felker , John Paul Adrian Glaubitz , Florian Fuchs , Artur Rojek Subject: [PATCH v2 1/3] mtd: maps: vmu-flash: fix build error due to missing include of linux/device.h Date: Mon, 27 Apr 2026 13:47:48 +0200 Message-ID: <20260427114750.2480900-2-fuchsfl@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260427114750.2480900-1-fuchsfl@gmail.com> References: <20260427114750.2480900-1-fuchsfl@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Fix build error by adding the missing include of linux/device.h linux/maple.h embeds struct device via struct maple_device, which requires the definition. Otherwise results in build error: ./include/linux/maple.h:81:16: error: field 'dev' has incomplete type struct device dev; ^~~ ./include/linux/maple.h:86:23: error: field 'drv' has incomplete type struct device_driver drv; ^~~ Fixes: 313162d0b838 ("device.h: audit and cleanup users in main include dir= ") Signed-off-by: Florian Fuchs --- v1->v2: no functional change, just rebase patch v1: https://lore.kernel.org/lkml/20251117224408.498449-2-fuchsfl@gmail.com/ include/linux/maple.h | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/include/linux/maple.h b/include/linux/maple.h index 3be4e567473c..22f2930251ed 100644 --- a/include/linux/maple.h +++ b/include/linux/maple.h @@ -2,10 +2,9 @@ #ifndef __LINUX_MAPLE_H #define __LINUX_MAPLE_H =20 +#include #include =20 -struct device; - /* Maple Bus command and response codes */ enum maple_code { MAPLE_RESPONSE_FILEERR =3D -5, --=20 2.43.0 From nobody Wed Jun 17 06:03:30 2026 Received: from mail-wr1-f51.google.com (mail-wr1-f51.google.com [209.85.221.51]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4D72739A071 for ; 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charset="utf-8" Use kzalloc_obj() / kzalloc_objs() to allocate the memcard structs, instead of kmalloc_obj() / kmalloc_objs() to prevent access to uninitialized data. Fixes runtime error: Fault in unaligned fixup: 0000 [#1] at mtd_get_fact_prot_info. Signed-off-by: Florian Fuchs --- v1->v2: no functional change, just rebased. v1: https://lore.kernel.org/lkml/20251117224408.498449-3-fuchsfl@gmail.com/ drivers/mtd/maps/vmu-flash.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/mtd/maps/vmu-flash.c b/drivers/mtd/maps/vmu-flash.c index 75e06d249ce9..b76d0609d1b7 100644 --- a/drivers/mtd/maps/vmu-flash.c +++ b/drivers/mtd/maps/vmu-flash.c @@ -609,7 +609,7 @@ static int vmu_connect(struct maple_device *mdev) =20 basic_flash_data =3D be32_to_cpu(mdev->devinfo.function_data[c - 1]); =20 - card =3D kmalloc_obj(struct memcard); + card =3D kzalloc_obj(struct memcard); if (!card) { error =3D -ENOMEM; goto fail_nomem; @@ -627,13 +627,13 @@ static int vmu_connect(struct maple_device *mdev) * Not sure there are actually any multi-partition devices in the * real world, but the hardware supports them, so, so will we */ - card->parts =3D kmalloc_objs(struct vmupart, card->partitions); + card->parts =3D kzalloc_objs(struct vmupart, card->partitions); 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Mon, 27 Apr 2026 04:51:18 -0700 (PDT) Received: from localhost ([2a02:810d:4a94:b300:3c87:b0bc:8c35:1ba0]) by smtp.gmail.com with UTF8SMTPSA id ffacd0b85a97d-43fe4e59f97sm87393680f8f.37.2026.04.27.04.51.18 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 27 Apr 2026 04:51:18 -0700 (PDT) From: Florian Fuchs To: Miquel Raynal , Richard Weinberger , Vignesh Raghavendra , linux-mtd@lists.infradead.org Cc: linux-sh@vger.kernel.org, linux-kernel@vger.kernel.org, Rich Felker , John Paul Adrian Glaubitz , Florian Fuchs , Artur Rojek Subject: [PATCH v2 3/3] mtd: maps: vmu-flash: Fix NULL pointer dereference in initialization Date: Mon, 27 Apr 2026 13:47:50 +0200 Message-ID: <20260427114750.2480900-4-fuchsfl@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260427114750.2480900-1-fuchsfl@gmail.com> References: <20260427114750.2480900-1-fuchsfl@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" 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 --- 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 =3D card->partition; mtd_cur->priv =3D mpart; mtd_cur->owner =3D THIS_MODULE; + mtd_cur->dev.parent =3D &mdev->dev; =20 pcache =3D kzalloc_obj(struct vmu_cache); if (!pcache) --=20 2.43.0