From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oo1-f79.google.com (mail-oo1-f79.google.com [209.85.161.79]) (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 625F51C5D59 for ; Mon, 18 May 2026 01:28:34 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.161.79 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779067715; cv=none; b=NdZPM5D4ICiFt/RdDQBVji5IvVL2ojZpptCZBBTY3kf+Ss7gQsuL8ttR0ieot05+T8//a9HQkdivRvmbVQFr3Hk3wSTiZz4PgOqMAXi7FNbVrt/H3EZrEbL5eWTcL/2PoB0X3loH9DjcfcYvWGnzIgEv7XNxcY0p5UYpwlTy8Mc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779067715; c=relaxed/simple; bh=OJPuwcTgG0qAlldJeYbBllV1dKuQNHf7HRiNCFCOTkY=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=b9+Qb62lC/SfeOk0Ncth8+F9SfadnLZrgLZaV3bNJgjtvSCuwTAvfm0g7f5S1cGOvnnalfpoxmnRmGlSwQpngdaWWJ/qrqu8ac/T2HTWNrvT7rnefpXDCmZ7RipLcGC7rwOJHpNkzxbVTJcvSf6YzLBghq1RgFErQDvXfl7HiLQ= 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=209.85.161.79 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-oo1-f79.google.com with SMTP id 006d021491bc7-69b8c3e1516so3177297eaf.3 for ; Sun, 17 May 2026 18:28:34 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1779067713; x=1779672513; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=1hZ26CcwKUUZ84CsaR3cg2pmuvgRNhJILqLKOjL1O+s=; b=kyKGy4yuAIStr1p7SMzvxkq9NnHjELmFz0a9uVNbXKy1iEDaKGRpcOkntXYGtNIS7h VgKZAUBR96FyzbsEJVrkXIfMVzBH5ItyHhoAsCvBSiysvnZ0Tn+WaXLDCki4o9KharzR tEUZqpKwgAjQJY5O7nLHksb44lXaoZk6kmv45SL6zlaKZ6cNeIS/VTUXnikf2lSX+4e7 trOpSkMjmXB+SHFj/8g9q2hrDNzg37LWFUSMPPWT0UjaN9rNL5/CziCJMR4w/er5Xr7R VP2kHnvLDCKiRJpMwxuDzzdUJw1Rye7NQaPA4OYWG/4gzAWkKQN4HDCh6CrNet336nVx ZbBA== X-Forwarded-Encrypted: i=1; AFNElJ8iVV+88xeC3evUsM1V9/RYhuscZJ2+nqoF/L37JqYz6NqdqSXonc9goVhDFS0Oa3WaYfoKtWdc6zjMCrY=@vger.kernel.org X-Gm-Message-State: AOJu0Yz5qutBYtirXdw7wfH6brc1RlXFxK2bABI3hfixwlCCJ3qUBbaN x2CaMm69WNPMhIz9ugf3qRndBrJH2liF2bqUX9JyJEiKspg5alaElrlLdn1CYOOKGehjnNePf2O Dqqo2Bra8k4sK/iwyqlTYvOZdQSyQHquf4DJY5u4pjFa10yWFsn6B+tTDFzQ= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:221e:b0:694:8428:dfd8 with SMTP id 006d021491bc7-69c9436b0c7mr7811374eaf.34.1779067713392; Sun, 17 May 2026 18:28:33 -0700 (PDT) Date: Sun, 17 May 2026 18:28:33 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6a0a6b41.170a0220.1ad1c0.0018.GAE@google.com> Subject: [syzbot] [hfs?] WARNING in hfs_put_super From: syzbot To: frank.li@vivo.com, glaubitz@physik.fu-berlin.de, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, slava@dubeyko.com, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: e1914add2799 Merge tag 'for-linus' of git://git.kernel.org.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=100d20c8580000 kernel config: https://syzkaller.appspot.com/x/.config?x=4caf64b1ee83dac0 dashboard link: https://syzkaller.appspot.com/bug?extid=bd88150de9bd90c582c9 compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/42f74029c2c3/disk-e1914add.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/ecb718a7baa5/vmlinux-e1914add.xz kernel image: https://storage.googleapis.com/syzbot-assets/7727a995a7ce/bzImage-e1914add.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+bd88150de9bd90c582c9@syzkaller.appspotmail.com ------------[ cut here ]------------ !buffer_uptodate(bh) WARNING: fs/buffer.c:1087 at mark_buffer_dirty+0x299/0x410 fs/buffer.c:1087, CPU#1: syz-executor/17308 Modules linked in: CPU: 1 UID: 0 PID: 17308 Comm: syz-executor Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 RIP: 0010:mark_buffer_dirty+0x299/0x410 fs/buffer.c:1087 Code: 4c 89 f7 e8 b9 5c da ff 49 8b 3e be 40 00 00 00 5b 41 5c 41 5e 41 5f 5d e9 b4 63 fb ff e8 ff 1e 6f ff eb 8c e8 f8 1e 6f ff 90 <0f> 0b 90 e9 a5 fd ff ff e8 ea 1e 6f ff 90 0f 0b 90 e9 cf fd ff ff RSP: 0018:ffffc900056d7b48 EFLAGS: 00010293 RAX: ffffffff8256a2d8 RBX: ffff88807795ebc8 RCX: ffff88802633bd80 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000002 RBP: 1ffff1100b807c01 R08: ffff88807795ebcf R09: 1ffff1100ef2bd79 R10: dffffc0000000000 R11: ffffed100ef2bd7a R12: 0000000000000000 R13: dffffc0000000000 R14: ffffffff82b1d2b0 R15: ffff88805c03e768 FS: 0000000000000000(0000) GS:ffff88812538d000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f7130976286 CR3: 000000009e053000 CR4: 0000000000350ef0 Call Trace: hfs_put_super+0x49/0x60 fs/hfs/super.c:52 generic_shutdown_super+0x13d/0x2d0 fs/super.c:646 kill_block_super+0x44/0x90 fs/super.c:1725 hfs_kill_super+0x41/0x50 fs/hfs/super.c:441 deactivate_locked_super+0xbc/0x130 fs/super.c:476 cleanup_mnt+0x437/0x4d0 fs/namespace.c:1312 task_work_run+0x1d9/0x270 kernel/task_work.c:233 exit_task_work include/linux/task_work.h:40 [inline] do_exit+0x70f/0x22c0 kernel/exit.c:975 do_group_exit+0x21b/0x2d0 kernel/exit.c:1118 __do_sys_exit_group kernel/exit.c:1129 [inline] __se_sys_exit_group kernel/exit.c:1127 [inline] __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1127 x64_sys_call+0x221a/0x2240 arch/x86/include/generated/asm/syscalls_64.h:232 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f62bb79ce59 Code: Unable to access opcode bytes at 0x7f62bb79ce2f. RSP: 002b:00007fff29fe0d28 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 00007f62bb83222a RCX: 00007f62bb79ce59 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001 RBP: 0000000000000002 R08: 0000000000000000 R09: 00007f62bb8321ca R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff29fe1fe0 R13: 00007f62bb8321ca R14: 0000555575c494e8 R15: 00007fff29fe30b0 --- 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