From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-ot1-f79.google.com (mail-ot1-f79.google.com [209.85.210.79]) (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 4955627979A for ; Tue, 23 Dec 2025 20:31:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.79 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1766521883; cv=none; b=ph9mD+QwBNNU6ysYXALQsgSSmJMB6NP+g/qR8tJ6PvnGeAAnun6HwgWKd30lpKK/KS5TyUeWJm0RawyrDSxdpmMRLN+CBivwawp0YD8RUQVZBNBGA79GL/gwg36UV6+C12ptxVnlxEbsDHnuSt80daCrTznQAzowEZXweDqn4ms= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1766521883; c=relaxed/simple; bh=HHESpmR1tK8gSkmx9sXywfu4V+qe2wB3rl0EXcCfdkU=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=NoTJGOTQZJp7/9iIcQ9EENw6FyJyCqzwj7uXyCVnbufvVSIp2cEqeurwQ4mrMdgyGnpRADlOYuSDf0fqbAPxzGOwTKTbJA+lIyiEWQyhFRfc41UXZ4q+6w9lbDj9JDt33uiQet+jcy+xPslyZCNS/+WEpulrK+MxTTrCCzMrQis= 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=209.85.210.79 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-ot1-f79.google.com with SMTP id 46e09a7af769-7c76977192eso15748256a34.3 for ; Tue, 23 Dec 2025 12:31:21 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1766521880; x=1767126680; h=to:from:subject:message-id:in-reply-to:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=enGZm49RUgF1V6AJU/+Rzow89Q8CpOstgdHUtOvF0YA=; b=t4jNLatD7csyv5kqyjqjfzg7oY9af5WxBKhg9Xg1prnaBv3a1BykxanK6wQUuDOE/w QrsgXd8FoypyFg278rcrnBXvPC916yGdFV4x6NyIdznKrIq5E/nJ1xuYqBKOYgexpqpR hU7AfkfQYax1Iu/Ia00s8EwSgqaB9sNZt8s49s4FbtjAYvVkqo8Aha6Vja5+unxiKo7x KIIkNoU9RELpXg1XWSQ4cz1a99DBjg7QI8OiJ8esNSF0LV+V9j7D/m5/D5rAyoKI+k5W SX11zJDAY8Tdss5wWibZbz8/c6AbIhksZnhOjMJroVWkVMUenQX3RcVrcyw3sWQD0wCT yHrw== X-Forwarded-Encrypted: i=1; AJvYcCVDkL7kohP1zWVcpfuqHWiCJSgt6joaV19wwurKmCA1ZELxSYdrM5Jxf+OLIYrkOzhfhmwYeV5rc/QXtS0=@vger.kernel.org X-Gm-Message-State: AOJu0Yzf+VkiVxuNXg1WJA8KfJ2bSpgFRIBo53u6cNrbI2QNB5Salh7K qiqlNsQ14A969eQ585YjaBbTupjAB9rUmQqB6XqeUekapDjBtRD+ynQldV+bb5XNFfuxkkB5C1i Aw9CCSAhGrUkLp7eb6Xosn2gSlVxNjHE41sCfucjuHhyn1przwzkN41QIjtQ= X-Google-Smtp-Source: AGHT+IGG2r6M+zIgcdivfRd7iUP41KU2ZT6AymZdssJNCS+vfdED5ZfEKuVzK7I2aEbdn2L3byCGGOP74NFYtPqlyrz0uWKs4r9x 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:f029:b0:65d:b36:bdd4 with SMTP id 006d021491bc7-65d0e94cf20mr7073768eaf.17.1766521880229; Tue, 23 Dec 2025 12:31:20 -0800 (PST) Date: Tue, 23 Dec 2025 12:31:20 -0800 In-Reply-To: <69441a92.a70a0220.207337.00e4.GAE@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <694afc18.050a0220.35954c.0006.GAE@google.com> Subject: Re: [syzbot] [ocfs2?] kernel BUG in ocfs2_move_extents 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" syzbot has found a reproducer for the following issue on: HEAD commit: 8f0b4cce4481 Linux 6.19-rc1 git tree: git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci console output: https://syzkaller.appspot.com/x/log.txt?x=12eb8bb4580000 kernel config: https://syzkaller.appspot.com/x/.config?x=8a8594efdc14f07a dashboard link: https://syzkaller.appspot.com/bug?extid=7960178e777909060224 compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 userspace arch: arm64 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14838f1a580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=16eb8bb4580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/cd4f5f43efc8/disk-8f0b4cce.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/aafb35ac3a3c/vmlinux-8f0b4cce.xz kernel image: https://storage.googleapis.com/syzbot-assets/d221fae4ab17/Image-8f0b4cce.gz.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/2c226c2e3d21/mount_0.gz fsck result: OK (log: https://syzkaller.appspot.com/x/fsck.log?x=10838f1a580000) IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+7960178e777909060224@syzkaller.appspotmail.com ======================================================= JBD2: Ignoring recovery information on journal ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode. ------------[ cut here ]------------ kernel BUG at fs/ocfs2/suballoc.c:1383! Internal error: Oops - BUG: 00000000f2000800 [#1] SMP Modules linked in: CPU: 1 UID: 0 PID: 6734 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 pstate: 83400005 (Nzcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : ocfs2_block_group_set_bits+0x784/0x8ec fs/ocfs2/suballoc.c:1383 lr : ocfs2_block_group_set_bits+0x784/0x8ec fs/ocfs2/suballoc.c:1383 sp : ffff8000a3eb7260 x29: ffff8000a3eb7320 x28: ffff0000f60124f8 x27: ffff0000ca05c000 x26: ffff0000eaee1b00 x25: ffff0000c5c8c000 x24: 1ffff000147d6e58 x23: ffff0000c5c8c00c x22: dfff800000000000 x21: 0000000000000001 x20: 0000000000000002 x19: 0000000000000000 x18: 00000000ffffffff x17: ffff800082225fb0 x16: ffff80008af67980 x15: 0000000000000001 x14: 0000000000000000 x13: 00000000fffffffc x12: 0000000000000000 x11: 0000000000000000 x10: 0000000000ff0100 x9 : 0000000000000000 x8 : ffff0000c8f1d580 x7 : 0000000000000000 x6 : 0000000000000000 x5 : 0000000000000002 x4 : 0000000000000001 x3 : ffff0000c1707d98 x2 : ffff0000c5c8c000 x1 : 0000000000000001 x0 : 0000000000000002 Call trace: ocfs2_block_group_set_bits+0x784/0x8ec fs/ocfs2/suballoc.c:1383 (P) ocfs2_move_extent fs/ocfs2/move_extents.c:693 [inline] __ocfs2_move_extents_range fs/ocfs2/move_extents.c:865 [inline] ocfs2_move_extents+0x213c/0x2e78 fs/ocfs2/move_extents.c:937 ocfs2_ioctl_move_extents+0x448/0x614 fs/ocfs2/move_extents.c:1069 ocfs2_ioctl+0x1c4/0x738 fs/ocfs2/ioctl.c:942 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:597 [inline] __se_sys_ioctl fs/ioctl.c:583 [inline] __arm64_sys_ioctl+0x14c/0x1c4 fs/ioctl.c:583 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xe8/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x5c/0x26c arch/arm64/kernel/entry-common.c:724 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:743 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 Code: 17ffffa0 97944b2d d4210000 97944b2b (d4210000) ---[ end trace 0000000000000000 ]--- --- 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.