From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oo1-f78.google.com (mail-oo1-f78.google.com [209.85.161.78]) (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 282CB348895 for ; Thu, 18 Dec 2025 15:15:34 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.161.78 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1766070939; cv=none; b=LpO5Pt4WFQLd07CtrwOt0KIlLF6fbkioyrvYouiIs8XkMVg3TinMS4LdnbVq/FEny1J0LyCtSGJpuntPUcvEf54de06Fp0KCYe1xUxXz7gVgsI2ih2ovOJlDXJiflxjaJKYzOSJHYObq7qcq2oWuOa5Opf1RDTdeNZpOHk9n+B0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1766070939; c=relaxed/simple; bh=sUOFaU02Zy/kdvKtoxhBQCPrLJsVk+gO+qKT+CQgfgM=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=T5Q7fPKA7QLkMyFAr/q0L01TnT8tZ6F4mntr9G2P8WE0gfgguGbUCj6z4q4BJIMXqIhMqknzSkKm4gK1bj8W77nbSYrhwRADH7x8X2gUd0N1sZRhrMbiNiOx7Rw+yvra8XyflM583Z2mU5vnYo3eLolxGJeTu6rAr8KQ8iY1KkA= 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=209.85.161.78 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-f78.google.com with SMTP id 006d021491bc7-656bc3a7ab3so916505eaf.2 for ; Thu, 18 Dec 2025 07:15:33 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1766070930; x=1766675730; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=26AQ1iXf+7Vt16LXqCfxdwjtkNq6rSrIyTXasEhwexc=; b=aDuiUXJBoijOTOPM62pcZx04miXTbxHO0ru1A0TSA3t9BHUiEOHiAVvgv/OGj81gPs 2je5L4v3O1W0uihpAsvgmbpODjWyUu1e9pNKdRbKVj0DW2x+eez+IxAUKgzrori7v+Ad pfxMLUhQtT8uvaoS67AsS5WIsteRHwWtjkI+JPoMytxYW40du6wYI854AiD7nO+C2Daj IuVKevE9oAY8E2CVZ4kgcNhVnzVc0Ra06VKpcLqUtm2GyyNH2zwh2UwpAePZwtiGQEkH vOzGi4SAQ5QXbI6vNCkGG/Khec/PJq7H19WA98WwfyfAzwOGHjK3e7VPhuBJ2teKYewe Hncg== X-Forwarded-Encrypted: i=1; AJvYcCVpEoV1Z9i7QJ6qkuwv9FilFS1s2lVXYC79zfFBdyoPZQCySqaYndawMx35+Td3vx+dwe4ChpLgr7w6VRU=@vger.kernel.org X-Gm-Message-State: AOJu0YywjkGnH7ZOFJ9KsxV1aLUckBIz5Gls4o9IuPHYTLxQTqeKjmsb jBmnyVlZws/sPfyXIHMW58WAIHii+/tRhdOnApYpvsG6uhW/1NwjFo3IYXF+sUc+EbFIz9Rm4hF r94DurjhG/jjTa2sZWC0IYMoJrtZhxbBxow6ssNuUUEakp+5qZbss01QsRFE= X-Google-Smtp-Source: AGHT+IGYQcJvWittys27dBCzKf7TNs4HmUrv+VmnEjZ/y6hYize7sN1dDrFutDLl2feOdc74pfu2ZqScJC3Is6T+St91tKBJSwyD Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a4a:d74c:0:b0:65d:5e1:ed1f with SMTP id 006d021491bc7-65d05e1f7bamr380364eaf.29.1766070930672; Thu, 18 Dec 2025 07:15:30 -0800 (PST) Date: Thu, 18 Dec 2025 07:15:30 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <69441a92.a70a0220.207337.00e4.GAE@google.com> Subject: [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" Hello, syzbot found the following issue on: HEAD commit: ea1013c15392 Merge tag 'bpf-fixes' of git://git.kernel.org.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=179abdc2580000 kernel config: https://syzkaller.appspot.com/x/.config?x=513255d80ab78f2b 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 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-ea1013c1.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/ea4d0b50128d/vmlinux-ea1013c1.xz kernel image: https://storage.googleapis.com/syzbot-assets/f2e7f1524121/bzImage-ea1013c1.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+7960178e777909060224@syzkaller.appspotmail.com loop0: detected capacity change from 0 to 32768 ======================================================= WARNING: The mand mount option has been deprecated and and is ignored by this kernel. Remove the mand option from the mount to silence this warning. ======================================================= JBD2: Ignoring recovery information on journal ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode. (syz.0.0,5341,0):ocfs2_dio_end_io:2401 ERROR: Direct IO failed, bytes = -28 ------------[ cut here ]------------ kernel BUG at fs/ocfs2/suballoc.c:1383! Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI CPU: 0 UID: 0 PID: 5341 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~bpo12+1 04/01/2014 RIP: 0010:ocfs2_block_group_set_bits+0x857/0x980 fs/ocfs2/suballoc.c:1383 Code: 07 fe c1 38 c1 0f 8c b8 fe ff ff 4c 89 e7 89 f3 e8 ce ae 76 fe 89 de e9 a7 fe ff ff e8 82 c7 0e fe 90 0f 0b e8 7a c7 0e fe 90 <0f> 0b f3 0f 1e fa 65 8b 1d b0 65 ec 0e bf 07 00 00 00 89 de e8 a0 RSP: 0018:ffffc9000ec973e0 EFLAGS: 00010246 RAX: ffffffff83b2fa76 RBX: 0000000000000001 RCX: 0000000000100000 RDX: ffffc90020802000 RSI: 00000000000fffff RDI: 0000000000100000 RBP: ffffc9000ec97500 R08: 0000000000000007 R09: 00000000000000f8 R10: 00000000fffffffc R11: 0000000000000002 R12: 1ffff1100253aa01 R13: 00000000000000f8 R14: ffff8880478e4fb8 R15: dffffc0000000000 FS: 00007f460e7df6c0(0000) GS:ffff88808d22a000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f46027ff000 CR3: 0000000011427000 CR4: 0000000000352ef0 Call Trace: ocfs2_move_extent fs/ocfs2/move_extents.c:693 [inline] __ocfs2_move_extents_range fs/ocfs2/move_extents.c:865 [inline] ocfs2_move_extents+0x2c39/0x3dd0 fs/ocfs2/move_extents.c:937 ocfs2_ioctl_move_extents+0x568/0x740 fs/ocfs2/move_extents.c:1069 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+0xfc/0x170 fs/ioctl.c:583 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f460d98f7c9 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:00007f460e7df038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f460dbe5fa0 RCX: 00007f460d98f7c9 RDX: 00002000000000c0 RSI: 0000000040406f06 RDI: 0000000000000004 RBP: 00007f460da13f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f460dbe6038 R14: 00007f460dbe5fa0 R15: 00007fff6d300b38 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:ocfs2_block_group_set_bits+0x857/0x980 fs/ocfs2/suballoc.c:1383 Code: 07 fe c1 38 c1 0f 8c b8 fe ff ff 4c 89 e7 89 f3 e8 ce ae 76 fe 89 de e9 a7 fe ff ff e8 82 c7 0e fe 90 0f 0b e8 7a c7 0e fe 90 <0f> 0b f3 0f 1e fa 65 8b 1d b0 65 ec 0e bf 07 00 00 00 89 de e8 a0 RSP: 0018:ffffc9000ec973e0 EFLAGS: 00010246 RAX: ffffffff83b2fa76 RBX: 0000000000000001 RCX: 0000000000100000 RDX: ffffc90020802000 RSI: 00000000000fffff RDI: 0000000000100000 RBP: ffffc9000ec97500 R08: 0000000000000007 R09: 00000000000000f8 R10: 00000000fffffffc R11: 0000000000000002 R12: 1ffff1100253aa01 R13: 00000000000000f8 R14: ffff8880478e4fb8 R15: dffffc0000000000 FS: 00007f460e7df6c0(0000) GS:ffff88808d22a000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f46027ff000 CR3: 0000000011427000 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 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