From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 4A22C260569; Tue, 30 Sep 2025 14:54:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1759244063; cv=none; b=OPIdbdyRaIXwEPAe55vc/Ra9ufLSoDLk/Il/zRwxFWTbQyAvRKfMk9zOIU+v/tTREsotGd0W0Ga63XuMtKlMHdElsTMT7MEDudG7kg2LGxMT6DBL+Iph8A5udgYhizCn+OKt9L+z/SzpZxcuAxv4DL+vAsEIMNdIGeXWaTWN/pc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1759244063; c=relaxed/simple; bh=CiBYDhqwGmXYphK83GTHRDpnJWeFO7d8p21l7UNvKqs=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Gi1yFueJhR8P0ZVU15Y4fVnL18luNhUKOwmXYcdGcGAw9a0zrqU2mm9fKBAplHef1VtztkuMbB776tsTBhl/yUdq2e7wzKStNKvIUB0VSKxszjFAgeLwaAWc2MqpS0acKB9FAYVKKsHyi0UeheQ8SLO0nU/uJTBawHX8n3Rl6IM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=vfSwg0Qs; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="vfSwg0Qs" Received: by smtp.kernel.org (Postfix) with ESMTPSA id C732EC4CEF0; Tue, 30 Sep 2025 14:54:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1759244063; bh=CiBYDhqwGmXYphK83GTHRDpnJWeFO7d8p21l7UNvKqs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=vfSwg0QsoAukYbFxkaT2LJZcFVKObeGIR7LbBdASrRkLvsTrXy11SMC26NeWhKKwb mBC20RuH7JlMStHgdB6H6R9cQuNv0jNTIYJIdShsuTPcDXmBpazsqYfj5ePD3/5zwG Cg7SfI2mcN62Scu4VXOMVOnJMtL012qAoF8eOtGU= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Jiasheng Jiang , Miquel Raynal , Sasha Levin Subject: [PATCH 5.10 005/122] mtd: Add check for devm_kcalloc() Date: Tue, 30 Sep 2025 16:45:36 +0200 Message-ID: <20250930143823.187734468@linuxfoundation.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20250930143822.939301999@linuxfoundation.org> References: <20250930143822.939301999@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 5.10-stable review patch. If anyone has any objections, please let me know. ------------------ From: Jiasheng Jiang [ Upstream commit 2aee30bb10d7bad0a60255059c9ce1b84cf0130e ] Add a check for devm_kcalloc() to ensure successful allocation. Fixes: 78c08247b9d3 ("mtd: Support kmsg dumper based on pstore/blk") Cc: stable@vger.kernel.org # v5.10+ Signed-off-by: Jiasheng Jiang Signed-off-by: Miquel Raynal [ Adjust context ] Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- drivers/mtd/mtdpstore.c | 3 +++ 1 file changed, 3 insertions(+) --- a/drivers/mtd/mtdpstore.c +++ b/drivers/mtd/mtdpstore.c @@ -423,6 +423,9 @@ static void mtdpstore_notify_add(struct longcnt = BITS_TO_LONGS(div_u64(mtd->size, mtd->erasesize)); cxt->badmap = devm_kcalloc(&mtd->dev, longcnt, sizeof(long), GFP_KERNEL); + if (!cxt->rmmap || !cxt->usedmap || !cxt->badmap) + return; + cxt->dev.total_size = mtd->size; /* just support dmesg right now */ cxt->dev.flags = PSTORE_FLAGS_DMESG;