From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oi2-f6.google.com (mail-oi2-f6.google.com [74.125.231.198]) (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 4A49B30C35F for ; Sat, 19 Sep 2026 21:50:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=74.125.231.198 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789854644; cv=none; b=PmvirsXPVEp341+FCcg4GnKJ4hnDrCp+7KFyBGsYtG5p7+eigcUHYOqT63uWMPV22rf+ZLt2OQ/Ee4eC1uPXiI3qStMq4CiIB3Jpj/UfGLBeatPnPEn+/blIXLHKwxS24xyQ7CQibu8P4K8+cB4/XB+17Phpd+DOEsizo2Fhdf4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789854644; c=relaxed/simple; bh=N9A4vnv5xdB6o6npPnpI6bRr68B5lvV5K4FEPfWAEUo=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=fZMjsT6LITP1LYw0oETTKRvt0BA67R30zkME3oDq9DAe1WnCracZTqnp0LHM/G+kM9nqr5rluE1dATExkbzzg1Q7KBEM7PYqjLIWrdYaet3azzK69v1FYsjG4hPjzrd8bWMJEguGk8jC8yeVpOqFTSDQ9KSBGCiP2FS+7PTC59A= 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=74.125.231.198 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-oi2-f6.google.com with SMTP id 46e09a7af769-804795653f9so330395a34.0 for ; Sat, 19 Sep 2026 14:50:43 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20260707; t=1789854642; x=1790459442; h=content-type:to:from:subject:message-id:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to :content-type; bh=3dJdY2tLzdU7OEVLV6TmrJE3tILV5aMCvODKDhHqMWw=; b=R7cs6JJshg8syq/w2sUssO1X1uZ8abjg0iOHnqOyrxQ25d0ZrFBnMrkck8Q4OZzCPI ydidKjPZLSqvF5RmK9majkpIBfr7URwShV5mBAN+cYLl9Z0Fd026zINg+00+sxqdqHw5 0Q75a+ph0Epr2QtSYQSTAT5ta/g2BlL09GHbqwTPQOBDhJUX84qOJcA0Ju8oaF2YFB9L HEjTAdSIi6UWBh54gNULgRpkIJOwEAOLPnD1N70hteIWA1xTmuUmU6idrrEdWimY1xMD iTL5qm0j2tMThgjo2EExmr3uBG1ubIJWt+FWtgdEmX2q63V9uVb62SX//KV7UxbFw7g8 uV2g== X-Forwarded-Encrypted: i=1; AKwUvBzjGAhJAjqA3itfnyHLDuX6Q3FpKIzoa7vLwydYNXJLdempgd8TEsJpTfQLVO8LRKB7JJh7luSjanBD3Qk=@vger.kernel.org X-Gm-Message-State: AFuF++kj9UJu+4blhOyCj4+esW02kupJiMxBi9NpBCkzQk7/ReGt06oh codv1k0kZZ2UajZsOKKoUsypwjtIsPn8/CqFlGiIbWDbx6jxzksMla9ic3cEiMP/pQgQGsXh8f9 6fXmINCLX/cBb5cYo1xMiPiEGZang8NFusfbJhl/BLsJl4VGK7YtZaF6ykes= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:290b:b0:6be:2c0f:e40b with SMTP id 006d021491bc7-6ca9a133802mr6053691eaf.2.1789854642237; Sat, 19 Sep 2026 14:50:42 -0700 (PDT) Date: Sat, 19 Sep 2026 14:50:42 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6aaf03b2.a6af0033.177e91.0009.GAE@google.com> Subject: [syzbot] [ocfs2?] kernel BUG in ocfs2_set_new_buffer_uptodate (3) 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: f6e7b42bf05b Merge tag 'sysctl-7.03-fixes-rc4' of git://gi.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=13446115580000 kernel config: https://syzkaller.appspot.com/x/.config?x=e909ffe6b35dddb7 dashboard link: https://syzkaller.appspot.com/bug?extid=03aaa576f1daa1c1f2f0 compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 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-f6e7b42b.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/93106cf47a8e/vmlinux-f6e7b42b.xz kernel image: https://storage.googleapis.com/syzbot-assets/e73f0f00e455/bzImage-f6e7b42b.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+03aaa576f1daa1c1f2f0@syzkaller.appspotmail.com ------------[ cut here ]------------ kernel BUG at fs/ocfs2/uptodate.c:509! Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI CPU: 0 UID: 0 PID: 5323 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 04/01/2014 RIP: 0010:ocfs2_set_new_buffer_uptodate+0x149/0x170 fs/ocfs2/uptodate.c:509 Code: 80 3c 20 00 74 08 4c 89 f7 e8 13 fc 3a fe 4d 8b 1e 48 89 df 5b 41 5c 41 5d 41 5e 41 5f 5d 2e e9 15 7a 01 1c e8 b8 55 c9 fd 90 <0f> 0b e8 b0 55 c9 fd 90 0f 0b e8 a8 55 c9 fd 90 0f 0b e8 a0 55 c9 RSP: 0000:ffffc9000e027108 EFLAGS: 00010293 RAX: ffffffff83fe8bd8 RBX: ffff888043c9b218 RCX: ffff888000dc4b00 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: 0000000000000001 R08: ffffffff907a627f R09: 1ffffffff20f4c4f R10: dffffc0000000000 R11: fffffbfff20f4c50 R12: dffffc0000000000 R13: ffff888043ce70e0 R14: ffff888043ce70e0 R15: ffff88801d025080 FS: 00007f335d9af6c0(0000) GS:ffff88808c2c6000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f335ccd8250 CR3: 0000000013815000 CR4: 0000000000352ef0 Call Trace: ocfs2_extend_local_quota_file fs/ocfs2/quota_local.c:1146 [inline] ocfs2_create_local_dquot+0x80e/0x1aa0 fs/ocfs2/quota_local.c:1232 ocfs2_acquire_dquot+0x82c/0xb70 fs/ocfs2/quota_global.c:897 dqget+0x725/0xbd0 fs/quota/dquot.c:1002 __dquot_initialize+0x3c8/0xd40 fs/quota/dquot.c:1462 ocfs2_get_init_inode+0x147/0x1c0 fs/ocfs2/namei.c:206 ocfs2_mknod+0x8bb/0x22b0 fs/ocfs2/namei.c:315 ocfs2_mkdir+0x180/0x430 fs/ocfs2/namei.c:667 vfs_mkdir+0x40c/0x620 fs/namei.c:5410 filename_mkdirat+0x285/0x510 fs/namei.c:5443 __do_sys_mkdir fs/namei.c:5470 [inline] __se_sys_mkdir+0x34/0x150 fs/namei.c:5467 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline] do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f335cb9e159 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f335d9aefe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00007f335ce26090 RCX: 00007f335cb9e159 RDX: 0000000000000000 RSI: 00000000000001ef RDI: 0000200000000040 RBP: 00007f335cc3503b R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f335ce26128 R14: 00007f335ce26090 R15: 00007fff6f6a4708 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:ocfs2_set_new_buffer_uptodate+0x149/0x170 fs/ocfs2/uptodate.c:509 Code: 80 3c 20 00 74 08 4c 89 f7 e8 13 fc 3a fe 4d 8b 1e 48 89 df 5b 41 5c 41 5d 41 5e 41 5f 5d 2e e9 15 7a 01 1c e8 b8 55 c9 fd 90 <0f> 0b e8 b0 55 c9 fd 90 0f 0b e8 a8 55 c9 fd 90 0f 0b e8 a0 55 c9 RSP: 0000:ffffc9000e027108 EFLAGS: 00010293 RAX: ffffffff83fe8bd8 RBX: ffff888043c9b218 RCX: ffff888000dc4b00 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: 0000000000000001 R08: ffffffff907a627f R09: 1ffffffff20f4c4f R10: dffffc0000000000 R11: fffffbfff20f4c50 R12: dffffc0000000000 R13: ffff888043ce70e0 R14: ffff888043ce70e0 R15: ffff88801d025080 FS: 00007f335d9af6c0(0000) GS:ffff88808c2c6000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f335cdeb660 CR3: 0000000013815000 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