From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-io1-f77.google.com (mail-io1-f77.google.com [209.85.166.77]) (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 48CB334BA3A for ; Tue, 7 Oct 2025 03:55:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.77 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1759809333; cv=none; b=gda3+ihftV0FlpZ/hU91okOoFWo5aZEaS9jqQBABToHp7qNauWzN4Pwmv8ZnjZ8YwssyaAWPwqZY0mgaWrBVmspR8Xu9w19uokwslNdUhxItUNZ9RNNxzOy3/6JrhQdfON0rgZeZ5Udiia6p6R+zwM4IXDh5rnrPvqPtPoy1peM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1759809333; c=relaxed/simple; bh=r6KU3UA7XOv6EJeOIp+g0o8Vscx9ypTrEEVxiFrzMrQ=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=iOtRMSynZAo9cGu/xvYGQMQvZ9YRkaZw2TPGvCXy3nDfkNUjDh8yWg98dfQ6bbywWuusM1upc1FTX0DM3ad4Vq/3tNfWa3ExmcPeQhZN3f4yZROs9IZy2epevk83Zoe7J3Sc2lhUhZ/i74y8kkr4UkZAlwC5fnyWifkvQ278N7A= 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=209.85.166.77 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-io1-f77.google.com with SMTP id ca18e2360f4ac-930db3a16c0so1362854939f.2 for ; Mon, 06 Oct 2025 20:55:32 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1759809331; x=1760414131; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=cXe/si0AdIFfWRGG0Lyp1Myvzf+B3lva4QTre8L89+Q=; b=iA4DVCBaxeVVSCUpHmxDxClbcQadidJkuDfbkElDoppOJ1w/fgI5NVlNjcjwgrRGf2 eYrUqadCcLEoLCzf8w/rNpM0cipgQASV+DWEbhHUzmFKZ47zOoOgDr5PM/GI9BQ744K8 bnc/oQ0s7TVDS4FXTIOrdSKA/oWLTVqqskQFJ0L/NuLzXH1gNMPEAdyCGKI8Tzl548vo Y1eezxUpdJHDCgwk0dKaYzNcoJ6c4kvzZGLnBpFkZ0ItwqBetdOp4YohgQMUw+CUGEaS VV3qPAFT7v+D3ytHYLW0NfTvAobPXTDecTST5hKdR1E4MOIYKW+eF0GJVccKWBHf1lXD 6dVA== X-Forwarded-Encrypted: i=1; AJvYcCVyi8wuFRO94Q4wv42pNbhAhWeE/RWuu4Qh4pIGZas6mkESWSuLQcpxG+gTVh1Su3tSUvSUg9HlhhEerAc=@vger.kernel.org X-Gm-Message-State: AOJu0Yy4ZtAQZb21sm9OBiTh4Y3xawcS/zk1o5zRGk7f9WiSlnHeiPmL uIUOAO+RnK+ahl8fKJrufY1/bnG8ED+8H8n2wui7fKU0lVdgNIwe318BpEhws/Upy5AzV587SBc pwbztyXhG2U0bjxRueSPpfYzU579Xnpm15DSldGn+6AKR/eeJVLI30go18eo= X-Google-Smtp-Source: AGHT+IGmHerphZMAS+CUcAorXHw9/E9e9vz/nLzhHxAmi8JMEfVfDNcNFEC6cSkUDqQrcyIMe+f2E9i7OriDblkLXxgzsWUMFCfq Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6602:15ca:b0:936:7fd5:b8be with SMTP id ca18e2360f4ac-93b96a9338fmr1920091239f.13.1759809331558; Mon, 06 Oct 2025 20:55:31 -0700 (PDT) Date: Mon, 06 Oct 2025 20:55:31 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <68e48f33.a00a0220.298cc0.046e.GAE@google.com> Subject: [syzbot] [ocfs2?] kernel BUG in __ocfs2_move_extent From: syzbot To: jlbec@evilplan.org, joseph.qi@linux.alibaba.com, linux-kernel@vger.kernel.org, mark@fasheh.com, ocfs2-devel@lists.linux.dev, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: e406d57be7bd Merge tag 'mm-nonmm-stable-2025-10-02-15-29' .. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=17739214580000 kernel config: https://syzkaller.appspot.com/x/.config?x=84e81c4d0c0e900a dashboard link: https://syzkaller.appspot.com/bug?extid=727d161855d11d81e411 compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=15fc5334580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=156a9ee2580000 Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/d900f083ada3/non_bootable_disk-e406d57b.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/ed88be2e6138/vmlinux-e406d57b.xz kernel image: https://storage.googleapis.com/syzbot-assets/bdedb017e44c/bzImage-e406d57b.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/dc258190d4b3/mount_0.gz fsck result: OK (log: https://syzkaller.appspot.com/x/fsck.log?x=17a54458580000) IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+727d161855d11d81e411@syzkaller.appspotmail.com option from the mount to silence this warning. ======================================================= ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode. ------------[ cut here ]------------ kernel BUG at fs/ocfs2/move_extents.c:101! Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI CPU: 0 UID: 0 PID: 5497 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 RIP: 0010:__ocfs2_move_extent+0xccf/0xce0 fs/ocfs2/move_extents.c:101 Code: ff 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c f0 fd ff ff 4c 89 e7 e8 01 d5 7b fe 48 8b 7c 24 08 e9 de fd ff ff e8 72 a9 14 fe 90 <0f> 0b 66 66 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 RSP: 0018:ffffc9000cb4f320 EFLAGS: 00010293 RAX: ffffffff83a9e4ce RBX: 0000000000000000 RCX: ffff888000332480 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000002 RBP: ffffc9000cb4f488 R08: ffff888000332480 R09: 0000000000000006 R10: 00000000fffffffc R11: 0000000000000000 R12: 0000000000002550 R13: 0000000000000002 R14: dffffc0000000000 R15: 0000000000000000 FS: 000055556197a500(0000) GS:ffff88808d98a000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000020000000b000 CR3: 00000000591c9000 CR4: 0000000000352ef0 Call Trace: ocfs2_move_extent fs/ocfs2/move_extents.c:672 [inline] __ocfs2_move_extents_range+0x2116/0x3380 fs/ocfs2/move_extents.c:859 ocfs2_move_extents+0x378/0x960 fs/ocfs2/move_extents.c:926 ocfs2_ioctl_move_extents+0x53e/0x710 fs/ocfs2/move_extents.c:1052 ocfs2_ioctl+0x191/0x750 fs/ocfs2/ioctl.c:942 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:597 [inline] __se_sys_ioctl+0xf9/0x170 fs/ioctl.c:583 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f57bad8eec9 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:00007ffd42f1aff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f57bafe5fa0 RCX: 00007f57bad8eec9 RDX: 00002000000000c0 RSI: 0000000040406f06 RDI: 0000000000000004 RBP: 00007f57bae11f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f57bafe5fa0 R14: 00007f57bafe5fa0 R15: 0000000000000003 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__ocfs2_move_extent+0xccf/0xce0 fs/ocfs2/move_extents.c:101 Code: ff 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c f0 fd ff ff 4c 89 e7 e8 01 d5 7b fe 48 8b 7c 24 08 e9 de fd ff ff e8 72 a9 14 fe 90 <0f> 0b 66 66 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 RSP: 0018:ffffc9000cb4f320 EFLAGS: 00010293 RAX: ffffffff83a9e4ce RBX: 0000000000000000 RCX: ffff888000332480 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000002 RBP: ffffc9000cb4f488 R08: ffff888000332480 R09: 0000000000000006 R10: 00000000fffffffc R11: 0000000000000000 R12: 0000000000002550 R13: 0000000000000002 R14: dffffc0000000000 R15: 0000000000000000 FS: 000055556197a500(0000) GS:ffff88808d98a000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000020000000b000 CR3: 00000000591c9000 CR4: 0000000000352ef0 --- 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