From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oo1-f77.google.com (mail-oo1-f77.google.com [209.85.161.77]) (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 5D6A73B584F for ; Sun, 6 Sep 2026 04:19:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.161.77 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788668374; cv=none; b=LMQ8tbfQTl4eQYiZ9rCt9XuIfGIBQyMQ7vZ25+H5BCgZxZIBYrtKzaiaSGKqSh8FvzwsLqeZDC1cMF1Po07SEHhh/zdMeHKXJxPGXUHE5wv7fsE0cnHEAVOamXc6KimH8hoKX1siiXJnAKOBmos5WT/FWWPdcAsydR8nrDpziKE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788668374; c=relaxed/simple; bh=PGPzWHwAirtV0I+Q8QKmVU0Rq2BRThx0qhC8Ybjwf/U=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=lMaNsXWi+6m+FvVa99yOsemf0IOBHoW4+BYm9pfqyduvrx0hS2U+jJpvoWSxUruJOMVq9xKuER76lG/7FEWto51tZn0JrSrnNFNzLnBuq6GU1IcLc7Eb3Ieqsdg84CUyE+kSmCrROAKiYdZbdOCU1k0+MRwvg+TIF0QgcDPUrbA= 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=209.85.161.77 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-f77.google.com with SMTP id 006d021491bc7-6b173742296so3747813eaf.0 for ; Sat, 05 Sep 2026 21:19:32 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1788668371; x=1789273171; h=content-type:to:from:subject:message-id:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to :content-type; bh=WJYM/ngiHGbwrinobd7mC8mmqG7Yhx352LAc7Qn4uMI=; b=EfitfH8S1CWlLxoDz2EbxdZ3yir3TvSmg16bYN2bYri/MW8y/VE/mer4+e4GDdNhtc pelmusDarxsRS5skIkFcGTPwU56ELRtP7W9PVW/R8+seOWrLzBZdgkVYf8jswLgxwkpg Vt16sevdLngvRwRUYXBRCxOPzBsAaGhXlF1AgxFgiRkDmkW+7pDocDu9OjMcGNfjQvP+ CBNrEigshyRhblzsRCtBlaE0Qct2WiNtx3FMLuYt88WmMkrr8qP+0EM6qg7aHoDV387a RPI1P3XqO5FeyrQGWAawUwIwLaFR2WSg3fQmk/rJbu09ZinQyO13nOpeYGBE6UqOXt6Z qkhg== X-Forwarded-Encrypted: i=1; AKwUvBzfo2AQAFViFNEEmM+wKHTXIB+KIdvY6wQ4nDkE/DSBiq22aJXreNfQT04rbvUPKwtgWQwK+HnAuR8iOlY=@vger.kernel.org X-Gm-Message-State: AFuF++l8/4DuZqAzYP0diOd+dlHIjkpTTj1Lameh0n6XsHpEMd7lTfGC wFMdwO5d093PP/xaEVNhFsdpuxd24qQDWvY7peGoCWFh28VcFfhTW6nG7EdWdlQEl98tSLQO776 JJ7e+ALHnDbRQk5PkTmmw/+TPre/9QXGzs1KuyPCEh6q1B52JNryK0nE/f/Q= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:1c9f:b0:6b8:2b7a:674e with SMTP id 006d021491bc7-6b82b7a6a58mr4413455eaf.5.1788668370586; Sat, 05 Sep 2026 21:19:30 -0700 (PDT) Date: Sat, 05 Sep 2026 21:19:30 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6a9ce9d2.0a3344eb.391530.0018.GAE@google.com> Subject: [syzbot] [nilfs?] WARNING in nilfs_copy_dirty_pages From: syzbot To: konishi.ryusuke@gmail.com, linux-kernel@vger.kernel.org, linux-nilfs@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: 89a312991dc6 Merge tag 'cifs-fixes-7.3-rc2' of https://git.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=11a5f349580000 kernel config: https://syzkaller.appspot.com/x/.config?x=e909ffe6b35dddb7 dashboard link: https://syzkaller.appspot.com/bug?extid=5aea413a54e976f31725 compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/d900f083ada3/non_bootable_disk-89a31299.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/114a4744ab8e/vmlinux-89a31299.xz kernel image: https://storage.googleapis.com/syzbot-assets/c65021627f2c/bzImage-89a31299.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+5aea413a54e976f31725@syzkaller.appspotmail.com NILFS (loop0): mounting fs with errors ------------[ cut here ]------------ inconsistent dirty state WARNING: fs/nilfs2/page.c:263 at nilfs_copy_dirty_pages+0x49f/0x6a0 fs/nilfs2/page.c:262, CPU#0: syz.0.0/5326 Modules linked in: CPU: 0 UID: 0 PID: 5326 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 RIP: 0010:nilfs_copy_dirty_pages+0x49f/0x6a0 fs/nilfs2/page.c:262 Code: c7 ae 60 fe 4d 8b 36 44 89 f6 83 e6 01 31 ff e8 b7 4c ef fd 41 f6 c6 01 0f 85 f1 00 00 00 e8 e8 46 ef fd 48 8d 3d 01 5c aa 0c <67> 48 0f b9 3a e9 67 ff ff ff e8 d2 46 ef fd 48 c7 c7 60 7a 31 8f RSP: 0018:ffffc9000f4274e0 EFLAGS: 00010287 RAX: ffffffff83d88548 RBX: ffffea00010e0080 RCX: 0000000000100000 RDX: ffffc9000f689000 RSI: 00000000000003d0 RDI: ffffffff9082e150 RBP: ffffc9000f4276f8 R08: ffffea00010e0087 R09: 1ffffd400021c010 R10: dffffc0000000000 R11: fffff9400021c011 R12: dffffc0000000000 R13: ffffea00010e0088 R14: 0000000062000400 R15: 0000000000000000 FS: 00007f95373936c0(0000) GS:ffff88808c2cf000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000020000000b038 CR3: 0000000040631000 CR4: 0000000000352ef0 Call Trace: nilfs_mdt_save_to_shadow_map+0xbb/0x1c0 fs/nilfs2/mdt.c:552 nilfs_clean_segments+0x28d/0xbe0 fs/nilfs2/segment.c:2546 nilfs_ioctl_clean_segments fs/nilfs2/ioctl.c:938 [inline] nilfs_ioctl+0x2619/0x2780 fs/nilfs2/ioctl.c:1368 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:597 [inline] __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:583 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline] do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f953659e159 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f9537392fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f9536826090 RCX: 00007f953659e159 RDX: 0000200000000040 RSI: 0000000040786e88 RDI: 0000000000000006 RBP: 00007f9536635024 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f9536826128 R14: 00007f9536826090 R15: 00007fff3c0fc038 ---------------- Code disassembly (best guess), 3 bytes skipped: 0: fe 4d 8b decb -0x75(%rbp) 3: 36 44 89 f6 ss mov %r14d,%esi 7: 83 e6 01 and $0x1,%esi a: 31 ff xor %edi,%edi c: e8 b7 4c ef fd call 0xfdef4cc8 11: 41 f6 c6 01 test $0x1,%r14b 15: 0f 85 f1 00 00 00 jne 0x10c 1b: e8 e8 46 ef fd call 0xfdef4708 20: 48 8d 3d 01 5c aa 0c lea 0xcaa5c01(%rip),%rdi # 0xcaa5c28 * 27: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction 2c: e9 67 ff ff ff jmp 0xffffff98 31: e8 d2 46 ef fd call 0xfdef4708 36: 48 c7 c7 60 7a 31 8f mov $0xffffffff8f317a60,%rdi --- 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