From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-ot1-f78.google.com (mail-ot1-f78.google.com [209.85.210.78]) (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 96A5A25A640 for ; Mon, 8 Dec 2025 07:41:30 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.78 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1765179692; cv=none; b=tTH9intMCv+6pkIjGucEar37SxXyAVrrjq96/29t4SoAjrSfKP0uLXnZ8r4fA09b0xxyo3sU9MQ2OutFvbepsqObaojwWhwAQ6wUn+EoAhvyIXQzuo1Of6JmJc85o5vTJ+X3qlUO/Qfx8z19O6u7DCAGn5CclH9d77sYBssf6yo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1765179692; c=relaxed/simple; bh=tvfZMSrDkC6ta5yr9Alwrmm9vBEkWPqK6e9b3jtcV7o=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=FQK+0l5YOCSYXfYQhpShtJ3oHP0/bs44AKoBwoPNPJpCh+dQmPVWITWsm2pjkzvkBccLAMQFsIXKlEu5spOjmUzAjkK92m+G+4H1CeAiM2wgTYP+SxBzYplmISsJp4xd2e/PWvabPXBQoJznL1R65ywaGdSJb7QcX9ZYDnegSK0= 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=209.85.210.78 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-ot1-f78.google.com with SMTP id 46e09a7af769-7c754daf77fso8486913a34.1 for ; Sun, 07 Dec 2025 23:41:30 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1765179689; x=1765784489; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=GE07irCDDq/q2tmA9wlEkvrmYCuBmh6FCVvXbPHRbBM=; b=CwCHckKO4CW9VZE9maLMHMjT/XaQCkSEnrqyeFJg1nf+vx+3dupmxjVGB7NXSz214V NBbqP+XiJxf0/UPH+PnaBJeOUhSgRrPHD5lo7EbcUtGOBzZfm1k9aA1ioblN8q0BwX9S vhVSIl4oTxcd/atX+/+xCNBontm+nkWrZREYSf0M+ut+bPxkoWqOpflOpx3hcsIEF35G UTjQrDZwPIzQvf+kaQ+6/vNzKgzgtU9IifQgB0oc4kAODBB4bIO860qVsUGDfVbi8H5Y D/Yi6WTBQy6x7cW2+ctil36G+KK1UQrSN/rKyTofdr9b1u5QzB1XMzzgcb6j/99bocxe TT/Q== X-Forwarded-Encrypted: i=1; AJvYcCXd0PVpFU2zUE+pocGSaCO/B/86b2klDioPoS/smp+VhyZNdVAXSDT3uGpQhBd3sidqyOW6A+UdgYP44g==@lists.linux.dev X-Gm-Message-State: AOJu0Yx+PC0SKBSbrS7VQui5M6wzKXWFtkUOEF2/N+D8vx67d7JGEXop qoEXzEtpWWIRlTpVEAyKiyEOZzw4FRV8sMhGnZWotWBB07TiIhR/d+qTr6j+fbD6BAe4FZbr6uu enZ/C4ldEg21tS7Qv8QK36LMUVI25Dz0CpZVUWLSvncjYjq4Xrf3BDAJlNkg= X-Google-Smtp-Source: AGHT+IFuE0PTxDTIr8e0pkfDGlzSczbA8WUs2HGi9aboSBZU0RD1oRu1HhmMfJHtA/BE5VsbNAhbMVapOIbsHPJKRBo1TjtW0mjy Precedence: bulk X-Mailing-List: ocfs2-devel@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a4a:ef81:0:b0:659:9a49:8e33 with SMTP id 006d021491bc7-6599a499e62mr2276040eaf.37.1765179689733; Sun, 07 Dec 2025 23:41:29 -0800 (PST) Date: Sun, 07 Dec 2025 23:41:29 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <69368129.a70a0220.38f243.008e.GAE@google.com> Subject: [syzbot] [ocfs2?] kernel BUG in ocfs2_remove_refcount_tree 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: cc3ee4ba57b7 Merge tag 'x86-urgent-2025-12-06' of git://gi.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=1084a992580000 kernel config: https://syzkaller.appspot.com/x/.config?x=c076ba11dc381bf9 dashboard link: https://syzkaller.appspot.com/bug?extid=6d832e79d3efe1c46743 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=16affc1a580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=168f221a580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/add7b22e16d3/disk-cc3ee4ba.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/df4dfdacc713/vmlinux-cc3ee4ba.xz kernel image: https://storage.googleapis.com/syzbot-assets/13e72276bff4/bzImage-cc3ee4ba.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/31e89a92b694/mount_0.gz fsck result: OK (log: https://syzkaller.appspot.com/x/fsck.log?x=121da6c2580000) IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+6d832e79d3efe1c46743@syzkaller.appspotmail.com ------------[ cut here ]------------ kernel BUG at fs/ocfs2/refcounttree.c:774! Oops: invalid opcode: 0000 [#1] SMP KASAN PTI CPU: 1 UID: 0 PID: 5921 Comm: syz-executor Not tainted syzkaller #0 PREEMPT_{RT,(full)} Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:ocfs2_remove_refcount_tree+0xd51/0xd60 fs/ocfs2/refcounttree.c:774 Code: fe e9 be fd ff ff 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c d8 fd ff ff 4c 89 ff e8 2a 9d 80 fe e9 cb fd ff ff e8 30 3e 1e fe 90 <0f> 0b 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 RSP: 0018:ffffc90003eb72c0 EFLAGS: 00010293 RAX: ffffffff83a1f400 RBX: 0000000000000010 RCX: ffff888025443c80 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90003eb74b0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000100 R11: 00000000fffffffc R12: 1ffff1100aff633b R13: 1ffff920007d6e68 R14: 1ffff110092a8c52 R15: 0000000000000000 FS: 000055557d56b500(0000) GS:ffff888126e4f000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055557d596648 CR3: 00000000343a8000 CR4: 00000000003526f0 Call Trace: ocfs2_wipe_inode fs/ocfs2/inode.c:888 [inline] ocfs2_delete_inode fs/ocfs2/inode.c:1155 [inline] ocfs2_evict_inode+0x142a/0x4020 fs/ocfs2/inode.c:1297 evict+0x5f4/0xae0 fs/inode.c:837 d_delete_notify include/linux/fsnotify.h:377 [inline] vfs_rmdir+0x3f4/0x670 fs/namei.c:5249 do_rmdir+0x27f/0x4a0 fs/namei.c:5291 __do_sys_unlinkat fs/namei.c:5468 [inline] __se_sys_unlinkat fs/namei.c:5462 [inline] __x64_sys_unlinkat+0xc2/0xf0 fs/namei.c:5462 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: 0033:0x7f9853deed27 Code: 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 07 01 00 00 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:00007fff08488218 EFLAGS: 00000207 ORIG_RAX: 0000000000000107 RAX: ffffffffffffffda RBX: 0000000000000065 RCX: 00007f9853deed27 RDX: 0000000000000200 RSI: 00007fff084893c0 RDI: 00000000ffffff9c RBP: 00007f9853e73d7d R08: 000055557d58e66b R09: 0000000000000000 R10: 0000000000001000 R11: 0000000000000207 R12: 00007fff084893c0 R13: 00007f9853e73d7d R14: 000000000001da3d R15: 00007fff0848b580 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:ocfs2_remove_refcount_tree+0xd51/0xd60 fs/ocfs2/refcounttree.c:774 Code: fe e9 be fd ff ff 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c d8 fd ff ff 4c 89 ff e8 2a 9d 80 fe e9 cb fd ff ff e8 30 3e 1e fe 90 <0f> 0b 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 RSP: 0018:ffffc90003eb72c0 EFLAGS: 00010293 RAX: ffffffff83a1f400 RBX: 0000000000000010 RCX: ffff888025443c80 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90003eb74b0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000100 R11: 00000000fffffffc R12: 1ffff1100aff633b R13: 1ffff920007d6e68 R14: 1ffff110092a8c52 R15: 0000000000000000 FS: 000055557d56b500(0000) GS:ffff888126e4f000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055557d596648 CR3: 00000000343a8000 CR4: 00000000003526f0 --- 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