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 64760C4332F for ; Mon, 21 Nov 2022 11:26:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231129AbiKUL0l (ORCPT ); Mon, 21 Nov 2022 06:26:41 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51788 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230300AbiKUL0L (ORCPT ); Mon, 21 Nov 2022 06:26:11 -0500 Received: from mail-wr1-x44a.google.com (mail-wr1-x44a.google.com [IPv6:2a00:1450:4864:20::44a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8316DBFF5A for ; Mon, 21 Nov 2022 03:21:42 -0800 (PST) Received: by mail-wr1-x44a.google.com with SMTP id w11-20020adfbacb000000b002418a90da01so3089896wrg.16 for ; Mon, 21 Nov 2022 03:21:42 -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=V66iN5ZNYfCs2IKwl/XWPfYUEeh8Am+8/6YCzEI2D8c=; b=DrqkFhwq+x32T++mKGiLwBwBQlLcPegquOjKmY4DA36Bdlu1UHyvmrWX1hBJRhVkQ6 CuCW3GY8rqEftTjZZrLMe7/mkVQz7UfhK+xIE67b7ScIXkJpIv8j5OGL6cLYo9+mckRB K7uXn7jnhwdTz8CKtd1PZLB/aUu4HHTidPyJYgxXX5idXFCZCOZVGyv8hmv6enXEqnwn sySci2PTifGmbTVUqgKzOGBN+JGcWBPg2j+F9wLZjNT18VaSguq8lzh50Et/vzVO1B6Q 2Y+EGhsTlaR3AYtHfVR7KGPKNpJOX8E3kDw+u1VmZZUxfQ8uANGRO5Nfw1xQZ/dSm2xH GfuQ== 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=V66iN5ZNYfCs2IKwl/XWPfYUEeh8Am+8/6YCzEI2D8c=; b=mGgSTis2C98jWsuFi/E86GrgUlOAc3vx35S/XHA6sVSw46vjcB2oqHvAtLl3NR8N5A Sw5cqZtrwGiodwqVdagay/YwX+pmxq6AuIuzOmTuOT+WQG+YdIIYAd1JhbgMyrnTNBFY 56PoXH7/Ctsqdn2aOMWgIwXVCpl4THUF4rxkPARkzW7XoSy8rCE59GMh26vm1np6Bpix MNWGecVgbHaCLiEyA2d5i7wE7liudg6MqLoq7frhwgtihDb7BVaCBdGhhdn8RrUfZJiH 8aRVNzG/RAV1+CxvCjXPHm37wTCuYyw4KjHBJ3k2FMNzFcFJerOXgnuPGKn6vSTXHYqT V0Rw== X-Gm-Message-State: ANoB5pnCoOXJmpqnRBeYlViLLckSCMZX/EIFjEuThwhpKXMh5W//ivNN dk3F3uyOCSt2/sVHP4zhmOs+O6gw2jY= X-Google-Smtp-Source: AA0mqf5PzJbpaiga2Jzsuv2QBaVRj0ECKQH/8ki+ITevGs4ly1kTH35yKTlXkQW0dHRua5gsG9D3oRFruQ0= X-Received: from glider.muc.corp.google.com ([2a00:79e0:9c:201:db68:962:2bf6:6c7]) (user=glider job=sendgmr) by 2002:adf:e50f:0:b0:22c:cc75:5aab with SMTP id j15-20020adfe50f000000b0022ccc755aabmr10402338wrm.143.1669029701044; Mon, 21 Nov 2022 03:21:41 -0800 (PST) Date: Mon, 21 Nov 2022 12:21:31 +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: <20221121112134.407362-2-glider@google.com> Subject: [PATCH 2/5] fs: affs: initialize fsdata in affs_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/affs/file.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/affs/file.c b/fs/affs/file.c index cefa222f7881c..8daeed31e1af9 100644 --- a/fs/affs/file.c +++ b/fs/affs/file.c @@ -880,7 +880,7 @@ affs_truncate(struct inode *inode) if (inode->i_size > AFFS_I(inode)->mmu_private) { struct address_space *mapping = inode->i_mapping; struct page *page; - void *fsdata; + void *fsdata = NULL; loff_t isize = inode->i_size; int res; -- 2.38.1.584.g0f3c55d4c2-goog