From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C6199331EAF for ; Sat, 25 Jul 2026 10:54:42 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784976883; cv=none; b=TSjuLo/tZL0GFem9HNKxvgIO81Tjmlij20upupzeQIFwSmDd2qDA6EYKKw6llQYoqfm3Fqii/jFqQZJnuhtxUxUd/UkFkQpGQWqdnp6iZxVocWGqzbRxmbfIB0w7LkHN6PrDitTSCnaiR3WdfSDN3u1kTZUQHJDfleVTkGJFzAs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784976883; c=relaxed/simple; bh=A0Tw8YiL9rzaH188xvNmuhgB7L7DOcmR8p8bSR/4tBA=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=REJUKgJsHC+qlHRH35JpOcKDZR16beXoYp5KCBTZcmQhnQGtIa5Pr8fK9Gg7QlHl7DcHjMcsB0JOPKny/VGWhDSWCOgtTtDv6dog4z1SlhyFQDVlX9xQUI9t80i6fyMeXNPkvac6uK+GJoe3TOgWCSr9tpnBqd3/WSiT9WgxrEE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=eC88unGu; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="eC88unGu" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 383031F000E9; Sat, 25 Jul 2026 10:54:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1784976882; bh=rNbhF75m4pf/5S6nu5OduzV+JiNHl5Xx4K64ECoI4Rg=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=eC88unGukiBe84feXGhyZgccgQ7jYnufDImPZe1hxbEIzMrovdRhq2CsddGo6BDi9 OTAoxp5hs7Bq3YeqnmZv3MGg6VBlnZXjsA7PzedUDVdoHsa/1MYiJkbvoB+cH7G+Qw 5tzntPAIvq1u81LVttu60wGC3i1q+Dd6J28aPwkMxreYfShOXnMe5MEyfimvnslB0L +ITxDsblKkxQ7NjBKKt4wHKs3v4GEwBAPhn9QqTGKquCcsVj57SRSD+hqf/3HRFuXd QHLZURIo54XfoJJGW6IJeML2ov6VMRReECzeFBXhSSs9sw1MmqFRUf3C8UUi8471jo aY+QWKCoiG7jA== From: Sasha Levin To: stable@vger.kernel.org Cc: Florian Fuchs , Miquel Raynal , Sasha Levin Subject: [PATCH 6.18.y] mtd: maps: vmu-flash: fix fault in unaligned fixup Date: Sat, 25 Jul 2026 06:54:40 -0400 Message-ID: <20260725105440.1854110-1-sashal@kernel.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <2026072054-king-ranking-9254@gregkh> References: <2026072054-king-ranking-9254@gregkh> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Florian Fuchs [ Upstream commit 79d1661502c6e4b6f626185cef72cf2fa78116e1 ] 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. Fixes: 47a72688fae7 ("mtd: flash mapping support for Dreamcast VMU.") Cc: stable@vger.kernel.org Signed-off-by: Florian Fuchs Signed-off-by: Miquel Raynal Signed-off-by: Sasha Levin --- drivers/mtd/maps/vmu-flash.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) diff --git a/drivers/mtd/maps/vmu-flash.c b/drivers/mtd/maps/vmu-flash.c index 3667faefe6c58f..e992f4d1417e6f 100644 --- a/drivers/mtd/maps/vmu-flash.c +++ b/drivers/mtd/maps/vmu-flash.c @@ -610,7 +610,7 @@ static int vmu_connect(struct maple_device *mdev) basic_flash_data = be32_to_cpu(mdev->devinfo.function_data[c - 1]); - card = kmalloc(sizeof(struct memcard), GFP_KERNEL); + card = kzalloc_obj(struct memcard); if (!card) { error = -ENOMEM; goto fail_nomem; @@ -628,15 +628,13 @@ 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 = kmalloc_array(card->partitions, sizeof(struct vmupart), - GFP_KERNEL); + card->parts = kzalloc_objs(struct vmupart, card->partitions); if (!card->parts) { error = -ENOMEM; goto fail_partitions; } - card->mtd = kmalloc_array(card->partitions, sizeof(struct mtd_info), - GFP_KERNEL); + card->mtd = kzalloc_objs(struct mtd_info, card->partitions); if (!card->mtd) { error = -ENOMEM; goto fail_mtd_info; -- 2.53.0