From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f198.google.com (mail-il1-f198.google.com [209.85.166.198]) (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 89DD8187864 for ; Thu, 31 Oct 2024 12:34:31 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.198 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730378073; cv=none; b=M8/xEWsW5/B2Qlzw0HILosvoyd5hOCepKQjoczfXycTtuwmWKuCNyJ06ddPpC2MJZ3xiEWLBC6Cp1/YAJk/eCf0bsvtt2KyfiGkpkmmfXbbmTDED5Pe5mMuWf6raSuRw32S8uAMjjHTSl1HdWYj6Og5Wj/UQ7rY1ViDPW+FkCVY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730378073; c=relaxed/simple; bh=IOLEIvFntfa/vJIfsQrKeKgmzvB1DmysIaiRifAEDhA=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=H6Ij82bgkV5KaRP1cbbOmdjLU4Tt4c8J7kkfhno9ceW97GTceurSx0+A2AAMUI6odX6aRMZuDTuXxRFWK9aoC81TLSwQwxaFFg/WxdVS6JOOF0NormyLEISx2Do5YisANWOM3eugfX808U+ufnF91p8HC6rV0CYUyR/N5dm/Qxs= 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=209.85.166.198 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-il1-f198.google.com with SMTP id e9e14a558f8ab-3a4f32b0007so7263895ab.1 for ; Thu, 31 Oct 2024 05:34:31 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1730378070; x=1730982870; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=Xv6ARN5aEJ9MUwnWoiTuHTxUy2W0dDI5d24R9VVxYp0=; b=CQbH1O5zTsR7piijf0o1p/bmjM6ng4D1BXGCAguOWVafx/1i+tPqRJUc5Yko8g+UmX xg3hZzvHzeVAsNUWQ2G+uYq4QHF9310xDXJBBZ9cJZIlQhnJYkpN8JLsZRfVW4bZVc8x IR+N8Q64wxWsoVRsAKi+Y2f0O6sk0zMS7LXagi4X6GCvwDbW3FOq7aRRtfyZlLBcjCJt wYPUvPQ6BPFzT5DMjD+vPIkqEQFlQDEzwxMUUXJ+jAsdbJZuoes5m37EciZsBjuaLszv rUO59EpWVfx0ioPJmZZh150OIlB30Fo/+4uhLRh2uia2HidjF41JoR+/Xm1ybaX6Xs2N 5xFw== X-Forwarded-Encrypted: i=1; AJvYcCU0XfSU0eCA4jaXFin1LPeXR3KnMzlPi0oCHIXMUgpZQY4bGsG6zGoBVBm7DF6essVLNv7pys6EjNfk@vger.kernel.org X-Gm-Message-State: AOJu0YxgS8XQFEm6ybw+pwyZwBoVnTGs4hhJcWCK96Oy+JjHPtMSYxwY 8mWnSss+b/CdRRg6MxH99HckdB7Hogv8Ac7+DsMOmVGCGXbTyQMNyUpmp5A33oHdsYxgWCHrkAr QICU1lQX8fdude5gCc92E4877TtsMdFZVtPmqC1xUX0QCbf7+bj15r3k= X-Google-Smtp-Source: AGHT+IFU/b84mYqdr2YklowtdzDfYYUNrJpqW599a9vUVayG4XUjgCe/yToCpCOVO2/3c8/LcOTzoNsbq0YayU0TQbWynVd3Cno2 Precedence: bulk X-Mailing-List: linux-ext4@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:1c81:b0:3a4:e67c:eb7f with SMTP id e9e14a558f8ab-3a60f229da5mr36529555ab.15.1730378070348; Thu, 31 Oct 2024 05:34:30 -0700 (PDT) Date: Thu, 31 Oct 2024 05:34:30 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <67237956.050a0220.35b515.015c.GAE@google.com> Subject: [syzbot] [ext4?] WARNING in ext4_iomap_begin (3) From: syzbot To: adilger.kernel@dilger.ca, linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com, tytso@mit.edu Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 850925a8133c Merge tag '9p-for-6.12-rc5' of https://github.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=109c2940580000 kernel config: https://syzkaller.appspot.com/x/.config?x=309bb816d40abc28 dashboard link: https://syzkaller.appspot.com/bug?extid=626aa13bf52efc3aa86e compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/7feb34a89c2a/non_bootable_disk-850925a8.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/c831c931f29c/vmlinux-850925a8.xz kernel image: https://storage.googleapis.com/syzbot-assets/85f584e52a7f/bzImage-850925a8.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+626aa13bf52efc3aa86e@syzkaller.appspotmail.com ------------[ cut here ]------------ WARNING: CPU: 0 PID: 5328 at fs/ext4/inode.c:3389 ext4_iomap_begin+0xaa2/0xd30 fs/ext4/inode.c:3389 Modules linked in: CPU: 0 UID: 0 PID: 5328 Comm: syz.0.0 Not tainted 6.12.0-rc4-syzkaller-00261-g850925a8133c #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 RIP: 0010:ext4_iomap_begin+0xaa2/0xd30 fs/ext4/inode.c:3389 Code: 5d 41 5e 41 5f 5d c3 cc cc cc cc e8 18 ce 34 ff 49 be 00 00 00 00 00 fc ff df 48 8b 5c 24 48 e9 61 ff ff ff e8 ff cd 34 ff 90 <0f> 0b 90 41 bc de ff ff ff e9 87 f6 ff ff 89 d9 80 e1 07 38 c1 0f RSP: 0018:ffffc9000d087560 EFLAGS: 00010293 RAX: ffffffff82601c71 RBX: 0000000010000000 RCX: ffff888000bb8000 RDX: 0000000000000000 RSI: 00000000000000d4 RDI: 0000000000000000 RBP: ffffc9000d0876d0 R08: ffffffff826013b8 R09: 1ffff110087be63b R10: dffffc0000000000 R11: ffffed10087be63c R12: 00000000000000d4 R13: 1ffff110087be69f R14: 000000000000000b R15: 0000000000000000 FS: 00007fbf155ff6c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fbf09d45000 CR3: 0000000042eb6000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: iomap_iter+0x691/0xf60 fs/iomap/iter.c:91 __iomap_dio_rw+0xdea/0x2370 fs/iomap/direct-io.c:677 iomap_dio_rw+0x46/0xa0 fs/iomap/direct-io.c:767 ext4_dio_write_iter fs/ext4/file.c:577 [inline] ext4_file_write_iter+0x15f0/0x1a20 fs/ext4/file.c:696 new_sync_write fs/read_write.c:590 [inline] vfs_write+0xaeb/0xd30 fs/read_write.c:683 ksys_write+0x183/0x2b0 fs/read_write.c:736 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fbf1577e719 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fbf155ff038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007fbf15936130 RCX: 00007fbf1577e719 RDX: 000000000000001c RSI: 0000000020000300 RDI: 0000000000000007 RBP: 00007fbf157f132e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000001 R14: 00007fbf15936130 R15: 00007ffd4ab6bf78 --- 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