From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail.parknet.co.jp (mail.parknet.co.jp [210.171.160.6]) by smtp.subspace.kernel.org (Postfix) with ESMTP id DB19A6F305; Fri, 4 Oct 2024 06:28:42 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=210.171.160.6 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728023325; cv=none; b=ce/ix3OxStDkGLjvIv+ODtsfCblfgzlKLbTG95EjEa0LTi3Si1bEAz/i1HGto6BJLY/YWf8l4JCJPU+C1On459XYAchkJLikPmdTlHTOPUGr/wvygBHfAJmg/tUM8gQOnQoO26zfagQjZoUninK0WlGqLeOBK7m6y7c9EJYu8Uk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728023325; c=relaxed/simple; bh=jkkJMMrSbK6C7UmCv6f9H/qFBHejsFq/miM9SZS//V0=; h=From:To:Cc:Subject:In-Reply-To:References:Date:Message-ID: MIME-Version:Content-Type; b=u0BSyLrkwfyiBFWo7mj8nBdby8Qhvx8CBor8pDijJYAuv3xtB24TDdFntd+FOvqYcQ++HRoimDt1vm6s5tL4oFXneYTspyOGCj6yRLIxZ3fUrGlU3HdYvsUBP1MNZRvcgsBMbwLH0IyeD4mATzvzATAuQjUuSthKJu2814bGkcU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=mail.parknet.co.jp; spf=pass smtp.mailfrom=parknet.co.jp; arc=none smtp.client-ip=210.171.160.6 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=mail.parknet.co.jp Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=parknet.co.jp Received: from ibmpc.myhome.or.jp (server.parknet.ne.jp [210.171.168.39]) by mail.parknet.co.jp (Postfix) with ESMTPSA id 916082055FA3; Fri, 4 Oct 2024 15:20:36 +0900 (JST) Received: from devron.myhome.or.jp (foobar@devron.myhome.or.jp [192.168.0.3]) by ibmpc.myhome.or.jp (8.18.1/8.18.1/Debian-6) with ESMTPS id 4946KZSC103714 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NOT); Fri, 4 Oct 2024 15:20:36 +0900 Received: from devron.myhome.or.jp (foobar@localhost [127.0.0.1]) by devron.myhome.or.jp (8.18.1/8.18.1/Debian-6) with ESMTPS id 4946KZVf731528 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NOT); Fri, 4 Oct 2024 15:20:35 +0900 Received: (from hirofumi@localhost) by devron.myhome.or.jp (8.18.1/8.18.1/Submit) id 4946KZ5c731527; Fri, 4 Oct 2024 15:20:35 +0900 From: OGAWA Hirofumi To: syzbot Cc: Andrew Morton , linkinjeon@kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, sj1557.seo@samsung.com, syzkaller-bugs@googlegroups.com Subject: Re: [syzbot] [exfat?] KMSAN: uninit-value in vfat_rename2 In-Reply-To: <66ff2c95.050a0220.49194.03e9.GAE@google.com> (syzbot's message of "Thu, 03 Oct 2024 16:45:25 -0700") References: <66ff2c95.050a0220.49194.03e9.GAE@google.com> Date: Fri, 04 Oct 2024 15:20:34 +0900 Message-ID: <87r08wjsnh.fsf@mail.parknet.co.jp> User-Agent: Gnus/5.13 (Gnus v5.13) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain syzbot writes: > Hello, > > syzbot found the following issue on: > > HEAD commit: e7ed34365879 Merge tag 'mailbox-v6.12' of git://git.kernel.. > git tree: upstream > console+strace: https://syzkaller.appspot.com/x/log.txt?x=11b54ea9980000 > kernel config: https://syzkaller.appspot.com/x/.config?x=92da5062b0d65389 > dashboard link: https://syzkaller.appspot.com/bug?extid=ef0d7bc412553291aa86 > compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14b7ed07980000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=101dfd9f980000 > > Downloadable assets: > disk image: https://storage.googleapis.com/syzbot-assets/66cc3d8c5c10/disk-e7ed3436.raw.xz > vmlinux: https://storage.googleapis.com/syzbot-assets/c7769a88b445/vmlinux-e7ed3436.xz > kernel image: https://storage.googleapis.com/syzbot-assets/c1fe4c6ee436/bzImage-e7ed3436.xz > mounted in repro #1: https://storage.googleapis.com/syzbot-assets/2ab98c65fd49/mount_0.gz > mounted in repro #2: https://storage.googleapis.com/syzbot-assets/7ffc0eb73060/mount_5.gz > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > Reported-by: syzbot+ef0d7bc412553291aa86@syzkaller.appspotmail.com The patch fixes this bug. Please apply. Thanks. From: OGAWA Hirofumi Subject: [PATCH] fat: Fix uninitialized variable Date: Fri, 04 Oct 2024 15:03:49 +0900 Reported-by: syzbot+ef0d7bc412553291aa86@syzkaller.appspotmail.com Signed-off-by: OGAWA Hirofumi --- fs/fat/namei_vfat.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/fat/namei_vfat.c b/fs/fat/namei_vfat.c index 6423e1d..15bf32c 100644 --- a/fs/fat/namei_vfat.c 2024-10-04 14:51:50.473038530 +0900 +++ b/fs/fat/namei_vfat.c 2024-10-04 14:56:53.108618655 +0900 @@ -1037,7 +1037,7 @@ error_inode: if (corrupt < 0) { fat_fs_error(new_dir->i_sb, "%s: Filesystem corrupted (i_pos %lld)", - __func__, sinfo.i_pos); + __func__, new_i_pos); } goto out; } _ -- OGAWA Hirofumi