From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-io1-f78.google.com (mail-io1-f78.google.com [209.85.166.78]) (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 82F6FC133 for ; Thu, 24 Apr 2025 02:02:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.78 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745460150; cv=none; b=GpItkbzJZYAbidW0YWcQYaWq8ivqk48lW1dTZRQtTpHePQzgeK4gK3FzxgM4kW9ZaRMez6UpqWNcZ8fR2h5mUFilqLWQeX/KIAgLKtXzuDmxgxRJ6PUdZw6F8XJyuyj5x2ueyBxgzzXExYJ9XmE4eIgS7mRK6RfOm9s9YmMhYW8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745460150; c=relaxed/simple; bh=Pv7OPVKtRbE+bbsu3UFh4FRokIglM5CMKW+YYq7hS5c=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=o4ycemgsai0vT1TruGiATSAQ4F3iRu07Bs7Vb8xYGuplwxaOoxU1Hx7D8YVgeI0gTIhUI3PUb40YrPrIfVnhxS3HFbnv9npqOrF7poaX1WPhBIDti9xfs0cNm9h1xd45UCEcwYZFF4HNhnhtaq+C3VobtRCfRkrJkYCJSB28BHQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.166.78 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-f78.google.com with SMTP id ca18e2360f4ac-85e318dc464so93935739f.1 for ; Wed, 23 Apr 2025 19:02:28 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1745460147; x=1746064947; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=flCF266RDJ50uYrZuYmER1ByNlJ8d8XpWuwoDVSeQb8=; b=usNpOXLpvDujhfRmMnkNGT2Mb8yb0/Hh2dUxQdYbrRAcOhPegFmbKhHktaK3VOTtw9 jAxhAHPKbOsjRbo+RAINjPPx3A0w3L2lLf1HCi1yvAMiirZ3tp8GFKQOyXPhNUlXfqeM mSH4dCJYhndq+QfyE9nEh1k0tpqB+UdIB4lv1UIqvgPV8TS04dJBzseB2WOuyWcwiS5k WyAmne8yc8WLl55Y/jQGBnEbuzy1kgjIeRSEg48bE3zanaB4TbuGT1QtGIRABAvnzth8 6ZRPJHcjmexPU3OpRgWfTuInDwod2q3MXfHPL/39SWVHKuvPdbaCq3kVojtThHlbfau4 sUdA== X-Forwarded-Encrypted: i=1; AJvYcCVh2cK5hToBy+30wRJFPPzCUdNDs180WCyKhQ+s0Tlxrio41K8pYtzv/SDCDNg99EUeGnk/jtHCSc0=@vger.kernel.org X-Gm-Message-State: AOJu0YzkRuaQ+Lgx+qQ3erN+1Qi0zSO8Po+pg3vo7T4WPKKz3cs0nlWM iVOvTHxB5cE1d6KlcRXHfI27dDhOgj16MmhEgDW1a5C4aDvs7rSECMWqE1aaqYmkAM82cQopdrF nHOmqs/rylB0GiHQbp/HdPtVALKUwzaTCHujdahWkVdIErIxAA6GUPZ4= X-Google-Smtp-Source: AGHT+IEmuUMojlfHtPqnUcLFpQPaW42scl/IPXixvCJI0vAiAeHoRIeITY/anSfbffMbvUUsI0BovuOvhafvX08eQV1dnMkuRHal Precedence: bulk X-Mailing-List: linux-xfs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:19c5:b0:3d4:6e2f:b487 with SMTP id e9e14a558f8ab-3d93026df5fmr9248225ab.0.1745460146945; Wed, 23 Apr 2025 19:02:26 -0700 (PDT) Date: Wed, 23 Apr 2025 19:02:26 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <68099bb2.050a0220.10d98e.0005.GAE@google.com> Subject: [syzbot] [xfs?] KMSAN: uninit-value in xfs_dialloc_ag_inobt From: syzbot To: cem@kernel.org, linux-kernel@vger.kernel.org, linux-xfs@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 8560697b23dc Merge tag '6.15-rc2-smb3-client-fixes' of git.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=11d3dfe4580000 kernel config: https://syzkaller.appspot.com/x/.config?x=a27b81e0cf56c60b dashboard link: https://syzkaller.appspot.com/bug?extid=b4a84825ea149bb99bfc compiler: Debian clang version 15.0.6, Debian LLD 15.0.6 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/03806cf4a3af/disk-8560697b.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/6d86507d5b30/vmlinux-8560697b.xz kernel image: https://storage.googleapis.com/syzbot-assets/f5f2020007a8/bzImage-8560697b.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+b4a84825ea149bb99bfc@syzkaller.appspotmail.com ===================================================== BUG: KMSAN: uninit-value in xfs_dialloc_ag_inobt+0x99b/0x2550 fs/xfs/libxfs/xfs_ialloc.c:1173 xfs_dialloc_ag_inobt+0x99b/0x2550 fs/xfs/libxfs/xfs_ialloc.c:1173 xfs_dialloc_ag fs/xfs/libxfs/xfs_ialloc.c:1585 [inline] xfs_dialloc_try_ag fs/xfs/libxfs/xfs_ialloc.c:1835 [inline] xfs_dialloc+0x14c4/0x3470 fs/xfs/libxfs/xfs_ialloc.c:1945 xfs_create_tmpfile+0x496/0x12c0 fs/xfs/xfs_inode.c:827 xfs_generic_create+0x65c/0x1610 fs/xfs/xfs_iops.c:227 xfs_vn_tmpfile+0x6b/0x140 fs/xfs/xfs_iops.c:1194 vfs_tmpfile+0x5e4/0xe40 fs/namei.c:3896 do_tmpfile+0x19d/0x460 fs/namei.c:3961 path_openat+0x4837/0x6280 fs/namei.c:3995 do_filp_open+0x26b/0x610 fs/namei.c:4031 io_openat2+0x5d5/0xa50 io_uring/openclose.c:140 io_openat+0x35/0x40 io_uring/openclose.c:177 __io_issue_sqe io_uring/io_uring.c:1734 [inline] io_issue_sqe+0x394/0x1de0 io_uring/io_uring.c:1753 io_wq_submit_work+0xaf8/0xde0 io_uring/io_uring.c:1868 io_worker_handle_work+0xc4d/0x2090 io_uring/io-wq.c:615 io_wq_worker+0x403/0x1470 io_uring/io-wq.c:669 ret_from_fork+0x6d/0x90 arch/x86/kernel/process.c:153 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Uninit was stored to memory at: xfs_dialloc_ag_inobt+0x1cc1/0x2550 fs/xfs/libxfs/xfs_ialloc.c:1227 xfs_dialloc_ag fs/xfs/libxfs/xfs_ialloc.c:1585 [inline] xfs_dialloc_try_ag fs/xfs/libxfs/xfs_ialloc.c:1835 [inline] xfs_dialloc+0x14c4/0x3470 fs/xfs/libxfs/xfs_ialloc.c:1945 xfs_create_tmpfile+0x496/0x12c0 fs/xfs/xfs_inode.c:827 xfs_generic_create+0x65c/0x1610 fs/xfs/xfs_iops.c:227 xfs_vn_tmpfile+0x6b/0x140 fs/xfs/xfs_iops.c:1194 vfs_tmpfile+0x5e4/0xe40 fs/namei.c:3896 do_tmpfile+0x19d/0x460 fs/namei.c:3961 path_openat+0x4837/0x6280 fs/namei.c:3995 do_filp_open+0x26b/0x610 fs/namei.c:4031 io_openat2+0x5d5/0xa50 io_uring/openclose.c:140 io_openat+0x35/0x40 io_uring/openclose.c:177 __io_issue_sqe io_uring/io_uring.c:1734 [inline] io_issue_sqe+0x394/0x1de0 io_uring/io_uring.c:1753 io_wq_submit_work+0xaf8/0xde0 io_uring/io_uring.c:1868 io_worker_handle_work+0xc4d/0x2090 io_uring/io-wq.c:615 io_wq_worker+0x403/0x1470 io_uring/io-wq.c:669 ret_from_fork+0x6d/0x90 arch/x86/kernel/process.c:153 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Local variable trec created at: xfs_dialloc_ag_inobt+0x139/0x2550 fs/xfs/libxfs/xfs_ialloc.c:1101 xfs_dialloc_ag fs/xfs/libxfs/xfs_ialloc.c:1585 [inline] xfs_dialloc_try_ag fs/xfs/libxfs/xfs_ialloc.c:1835 [inline] xfs_dialloc+0x14c4/0x3470 fs/xfs/libxfs/xfs_ialloc.c:1945 CPU: 1 UID: 0 PID: 7854 Comm: iou-wrk-7829 Not tainted 6.15.0-rc2-syzkaller-00404-g8560697b23dc #0 PREEMPT(undef) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 ===================================================== --- 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 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