From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-io1-f69.google.com (mail-io1-f69.google.com [209.85.166.69]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 06ADC63DC for ; Thu, 28 Dec 2023 10:34:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-io1-f69.google.com with SMTP id ca18e2360f4ac-7ba7b2c0c1cso861728939f.2 for ; Thu, 28 Dec 2023 02:34:28 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1703759668; x=1704364468; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=N0oCSfRy8XwUA44T0zAUXbingz0fhM4PCwluuYF0MN0=; b=hGaPTELKuG0mhVaIc4dJMfLMIX03TzNh92nQll93ma8cD41OuudPRgTj0wgNxWQSdG 2HA1EP0P6F3LIeaNH7TL8W51tjkAEpjuabVGgWLpicsp5TOCQn/hTF0YdBat+ZQXHUQJ PBDJ0kIWwPEAkHA6ith6Q/+HsnZhmef093eV0HG0v/1xtek8gHEFsrSZsObYnRvO0qvQ hDWan1dYuSSwsesuMQFl9ZaRnNCz0qL1ygjC2wBgJ/nHqeQghoI7CMdWukwOeQL4RA6f c/AEtBkc8u8qkgVopCVEYeOaWzOZyBjOL749cQG8eWyxY5YjXhmTGoMeo9apBwz/aShH XROQ== X-Gm-Message-State: AOJu0Yx2GdENIVK/jN/lJbEJmRiuVG05vLmQQ3pvrjzrphG0dxhosKKO PhGwhB/169OE2IjmwdoSMz96IWC6GsZUFVIU6RFDGH/SkqQZ X-Google-Smtp-Source: AGHT+IGzkU8ICsFNgeWO4iMwAVO3MODGVzGlDeU6J/rYE3fRLIvnn0zpP26ixYu9X8V+8iYL6Mtid9xy6XQjpMWsk8M04Gd9o1Ii Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a5d:814e:0:b0:7ba:d9c8:b97d with SMTP id f14-20020a5d814e000000b007bad9c8b97dmr77030ioo.4.1703759668260; Thu, 28 Dec 2023 02:34:28 -0800 (PST) Date: Thu, 28 Dec 2023 02:34:28 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000cf405f060d8f75a9@google.com> Subject: [syzbot] [udf?] KMSAN: uninit-value in udf_update_tag From: syzbot To: jack@suse.com, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 861deac3b092 Linux 6.7-rc7 git tree: upstream console+strace: https://syzkaller.appspot.com/x/log.txt?x=16e0171ae80000 kernel config: https://syzkaller.appspot.com/x/.config?x=e0c7078a6b901aa3 dashboard link: https://syzkaller.appspot.com/bug?extid=d31185aa54170f7fc1f5 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=17561579e80000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1277e7a5e80000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/0ea60ee8ed32/disk-861deac3.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/6d69fdc33021/vmlinux-861deac3.xz kernel image: https://storage.googleapis.com/syzbot-assets/f0158750d452/bzImage-861deac3.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/f35551f8a991/mount_0.gz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+d31185aa54170f7fc1f5@syzkaller.appspotmail.com ======================================================= UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) ===================================================== BUG: KMSAN: uninit-value in crc_itu_t_byte include/linux/crc-itu-t.h:22 [inline] BUG: KMSAN: uninit-value in crc_itu_t+0x287/0x2e0 lib/crc-itu-t.c:60 crc_itu_t_byte include/linux/crc-itu-t.h:22 [inline] crc_itu_t+0x287/0x2e0 lib/crc-itu-t.c:60 udf_update_tag+0x5c/0x2a0 fs/udf/misc.c:261 udf_rename+0x13dd/0x16a0 fs/udf/namei.c:877 vfs_rename+0x1a79/0x1fa0 fs/namei.c:4844 do_renameat2+0x1571/0x1ca0 fs/namei.c:4996 __do_sys_rename fs/namei.c:5042 [inline] __se_sys_rename fs/namei.c:5040 [inline] __x64_sys_rename+0xec/0x140 fs/namei.c:5040 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x44/0x110 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b Local variable diriter created at: udf_rename+0xbb/0x16a0 fs/udf/namei.c:768 vfs_rename+0x1a79/0x1fa0 fs/namei.c:4844 CPU: 0 PID: 5011 Comm: syz-executor409 Not tainted 6.7.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 ===================================================== --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing. If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup