From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 555EEC43219 for ; Mon, 21 Nov 2022 11:26:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231160AbiKUL0n (ORCPT ); Mon, 21 Nov 2022 06:26:43 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52950 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230340AbiKUL0O (ORCPT ); Mon, 21 Nov 2022 06:26:14 -0500 Received: from mail-ej1-x649.google.com (mail-ej1-x649.google.com [IPv6:2a00:1450:4864:20::649]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E1E02BFF74 for ; Mon, 21 Nov 2022 03:21:47 -0800 (PST) Received: by mail-ej1-x649.google.com with SMTP id ga41-20020a1709070c2900b007aef14e8fd7so6500638ejc.21 for ; Mon, 21 Nov 2022 03:21:47 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=iseMGXVhmQtR+5DQv6vAmctq3FLXZ3Zx0bYYW0I3bps=; b=fvoRIPmpwjc9kwZJjlC8SWhtwYdajteuU8MNnEWUMvn5GkD+yGWYPUsDcdndaw8YjK fa13YD7A3DdjmU3EhEj99KaM6rOjUxJKB/d/QJYdnY6fqKOJgZkPoO8RrrWJe1U4umr+ hiUfjkhq3hMpxwynNBwHUtYJWY9QJy0HLcUfde1YnzFDialtNBgsAL/Lpaq6bDXTMM62 N5V2k9a1D0kusoUoO9/V+NmAYKbT5IpfYNf/E/G22Vwu5YTvASjATJcEIMrdADAeDQc2 MVVCkuX8C8EJypjMeMPM03N72UYeZDw46ri4QQG9SKF+2INt3aYRQ+JZ/H1xOpAorNwU 0etA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=iseMGXVhmQtR+5DQv6vAmctq3FLXZ3Zx0bYYW0I3bps=; b=EuR6jNOfrQK3DAkeSvRtw2pIFuWyU9tvWVVavG6Ifds9h/uKxbRXDXA/NiaDZuIS8d avUdxw8HaojvpAig3xYhX38NKBe6ZX8QMQbnOijZRoayvtMaN5gQnYG55aexS8gB9gWv BJ1klXmCQCBUaazmd7/VcEwgVNUpmzJjQnDwG1VSmmu0Mwjo/hpvVU50WSnZJoAjJZXL QXmmgZZsLNTtMWWYC0okXwnMWCjDF1mxFgkHlzMgIImTSgKLAnSlINToH94+bhMxqwnj 9mnzgaqVHF7ZgzGbt8gpLVKHNcK7aolXdWa61hGHcmRkIDOQvyA/8x2eSyhGQ135X6wY Nm0Q== X-Gm-Message-State: ANoB5pk8uqvlfiSMdCKWdDpKAuC5jEQjyrj7vE0Sywao8H4SDJZVQrO2 vmWEDklWOpgWE5/XKX1ZUBPQy9sMyfU= X-Google-Smtp-Source: AA0mqf5//ubCLbRHw5k5ojH75x8ASFqsHvPLZaawkowyC5ynCgNspfsSIAS8NxDclO+KSFJJIsbTDrSav0k= X-Received: from glider.muc.corp.google.com ([2a00:79e0:9c:201:db68:962:2bf6:6c7]) (user=glider job=sendgmr) by 2002:a17:907:8b13:b0:781:541:6599 with SMTP id sz19-20020a1709078b1300b0078105416599mr3206798ejc.45.1669029706445; Mon, 21 Nov 2022 03:21:46 -0800 (PST) Date: Mon, 21 Nov 2022 12:21:33 +0100 In-Reply-To: <20221121112134.407362-1-glider@google.com> Mime-Version: 1.0 References: <20221121112134.407362-1-glider@google.com> X-Mailer: git-send-email 2.38.1.584.g0f3c55d4c2-goog Message-ID: <20221121112134.407362-4-glider@google.com> Subject: [PATCH 4/5] fs: hfs: initialize fsdata in hfs_file_truncate() From: Alexander Potapenko To: glider@google.com Cc: linux-kernel@vger.kernel.org, akpm@linux-foundation.org, tytso@mit.edu, adilger.kernel@dilger.ca, jaegeuk@kernel.org, chao@kernel.org, linux-fsdevel@vger.kernel.org, linux-ext4@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, Eric Biggers Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org When aops->write_begin() does not initialize fsdata, KMSAN may report an error passing the latter to aops->write_end(). Fix this by unconditionally initializing fsdata. Suggested-by: Eric Biggers Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Signed-off-by: Alexander Potapenko --- fs/hfs/extent.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/hfs/extent.c b/fs/hfs/extent.c index 3f7e9bef98743..6d1878b99b305 100644 --- a/fs/hfs/extent.c +++ b/fs/hfs/extent.c @@ -486,7 +486,7 @@ void hfs_file_truncate(struct inode *inode) inode->i_size); if (inode->i_size > HFS_I(inode)->phys_size) { struct address_space *mapping = inode->i_mapping; - void *fsdata; + void *fsdata = NULL; struct page *page; /* XXX: Can use generic_cont_expand? */ -- 2.38.1.584.g0f3c55d4c2-goog