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 54BB128E5F5; Wed, 23 Apr 2025 15:11:58 +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=1745421118; cv=none; b=u4j3t//NkXAnCDc7InYARcbzhI2LtUb4om5dqHNOQpu0d5lznoHWEFkr5p0ysVT1RhrvWslE6SGmKzkO3FPXMG8SBDDjd1U+2K+/BJYYKjmnsbK39GRLG0NXyEuFRM/Hlyg+A3bohOOXWOQUNhyBBjbiIZ1lDCJF+ELhv4RHJZs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745421118; c=relaxed/simple; bh=q7Hiy/oMKmIGA9jBcxoLcW40QVJRElc4J2wvwhopIm0=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=mO+Rxt+LlS5YFHNYMGEq6Uv8HZS18Rra8EO0XcGCyVdlcq7ig+9MXFG3TamWMDuVLDjtvNi2KBxOwRQ4MXLi2WXx2Ge8XdIkI5y+kQfSHcX8VvtNINGLlv2faqaTwnbpFeJ+fD4blg3Y81+8b7KtCJpfGn4e0JxFW1jdghM6Oxk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=FXiYWKmn; 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="FXiYWKmn" Received: by smtp.kernel.org (Postfix) with ESMTPSA id D9B09C4CEE8; Wed, 23 Apr 2025 15:11:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1745421118; bh=q7Hiy/oMKmIGA9jBcxoLcW40QVJRElc4J2wvwhopIm0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=FXiYWKmnETSmFKmtiMGJXg/g6Bn9tJ3m4BV2R5l4s55oqMpPfpZT+yN0kMW4Zp/Fo AyIEDU8yoiG1r88l5xycano31XGZ0VrhGwKe/s6uYbuQaY/S8P1sdNINU/VraYYQAL DW6xUmptaCH/hSIZgn2aXsnsCUc61Ogs4b9ffVVA= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Jiasheng Jiang , Miquel Raynal Subject: [PATCH 6.6 148/393] mtd: Add check for devm_kcalloc() Date: Wed, 23 Apr 2025 16:40:44 +0200 Message-ID: <20250423142649.496114794@linuxfoundation.org> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250423142643.246005366@linuxfoundation.org> References: <20250423142643.246005366@linuxfoundation.org> User-Agent: quilt/0.68 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Jiasheng Jiang commit 2aee30bb10d7bad0a60255059c9ce1b84cf0130e upstream. 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 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 = kcalloc(longcnt, sizeof(long), GFP_KERNEL); + if (!cxt->rmmap || !cxt->usedmap || !cxt->badmap) + return; + /* just support dmesg right now */ cxt->dev.flags = PSTORE_FLAGS_DMESG; cxt->dev.zone.read = mtdpstore_read;