From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oi1-f205.google.com (mail-oi1-f205.google.com [209.85.167.205]) (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 A7553379EE4 for ; Thu, 23 Jul 2026 07:48:36 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.167.205 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784792918; cv=none; b=R0EXilFzGfmw7Sj7It3+cAI+t13yIkAfoFHAsygaWI+Q1cjL/9wkeG/f2u3cBs5ql+6tBM83m6hk18Bdn0Eb8LS0ogIKySUoXuvmZRX3gbmKX5oAjJnNSkTWb0oupPivulGDuNoK9KvCbKQ+XUDpEt8vS/MdhGPX0JkGyBmk4Bo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784792918; c=relaxed/simple; bh=HOSzlMbhKgCv0I52AS+IR3w18Qhf+7mjen1aa73eGlU=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=E+xLHhn5XSUWsBIVA0R7C8rHMuku4zk2X93TCp2s7stuJnJZM7U753WnCykcKhBnr1qmcJSExHORdv7R7bvVKUFSyrQ0Cl5W4D5L7uTyt5o6Pc+Pv1OU8xGok0lmn3O2kynpXZnyUZwGcH6+rKe5VH1x3c1HO1R6co9vjFa81kA= 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=209.85.167.205 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-oi1-f205.google.com with SMTP id 5614622812f47-4909b046dabso502916b6e.0 for ; Thu, 23 Jul 2026 00:48:36 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1784792915; x=1785397715; 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=/VVWvwcmfPleJGHbn0WwR04ZH2r/GqSFRjT4zKIARNg=; b=M3M6vv/IajUx7QCILXyaem2TdYBYGvfXvZbmVo4UAgUbE1DQKL4YZa3euu3odDQcC9 wPPZvuf2G6Z18YH2DMkXy0cUWs/JZx8MKVdQ/kKupCYdybOymYz1gOvGt0iAyguc2NWc d7iIkpHiCXXDO5J7l80eGMaxB3kUOciMDMGmgmX3mYLePTBRGYeDuITYlgoYvH+WTrmE rLN6GHJ3EyF26EdbaD2mFblZ/X960G7gV0FFBvavi6jkLuBu/ZtKNPjTJzlfGXxUiqqu PsUTOo4As1RVKhyQlJaYPxTwdvXF2GcFsfH1jjsDsC7O1iqVndMx0rmUBeQwMb0KidJd bX7A== X-Forwarded-Encrypted: i=1; AHgh+RqKn7U6gkhh3K+7ypXsjJyaZ3JNrZ7F2tZpWkNrzSL6C+dKUQ0TN9UOUPrRdFP5kaS+3yD4Zi5zNkN2to8=@vger.kernel.org X-Gm-Message-State: AOJu0YzWfzaHR7UdJIjBWIuL15019SsWmF8cSlt4lnN2EFsr+b9Ya6MJ wVbkdwQT2S3QeEacVfywRLvgKtLLGN1LH/2NmUOxOMyUNm4dwmxjzQXpivRtTrxhVigmOq9Rp4I AmnJjxIU7rNiYHFnYTPqys5tFMsLEVtdNEtNWLJoMdEHC1wcVq2cB4t4fwXI= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6808:1705:b0:493:e2bb:2eaf with SMTP id 5614622812f47-4ab3560c757mr979372b6e.39.1784792915525; Thu, 23 Jul 2026 00:48:35 -0700 (PDT) Date: Thu, 23 Jul 2026 00:48:35 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6a61c753.4c7b7f70.2b0f85.0001.GAE@google.com> Subject: [syzbot] [ocfs2?] kernel BUG in ocfs2_xattr_value_truncate (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: f2ec6312bf71 Merge tag 'scsi-fixes' of git://git.kernel.or.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=12cb5789580000 kernel config: https://syzkaller.appspot.com/x/.config?x=20c9876b0f77b546 dashboard link: https://syzkaller.appspot.com/bug?extid=1542b94cc3d81b71110d 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-f2ec6312.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/89734a3b39bd/vmlinux-f2ec6312.xz kernel image: https://storage.googleapis.com/syzbot-assets/48a3e1cd63f9/bzImage-f2ec6312.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+1542b94cc3d81b71110d@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.0.0,5327,0):ocfs2_dio_end_io:2420 ERROR: Direct IO failed, bytes = -28 ------------[ cut here ]------------ kernel BUG at fs/ocfs2/xattr.c:747! Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI CPU: 0 UID: 0 PID: 5327 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_xattr_extend_allocation fs/ocfs2/xattr.c:747 [inline] RIP: 0010:ocfs2_xattr_value_truncate+0x1738/0x1740 fs/ocfs2/xattr.c:868 Code: 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c be eb ff ff 4c 89 f7 48 89 f3 e8 d6 44 3d fe 48 89 de e9 ab eb ff ff e8 c9 19 ce fd 90 <0f> 0b 66 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 0018:ffffc9000f78e940 EFLAGS: 00010283 RAX: ffffffff83f86807 RBX: 0000000000000002 RCX: 0000000000100000 RDX: ffffc9000ee51000 RSI: 0000000000001097 RDI: 0000000000001098 RBP: ffffc9000f78ec70 R08: ffff888000ec2540 R09: 0000000000000006 R10: 00000000fffffffc R11: 0000000000000002 R12: fffff52001ef1d3c R13: 0000000000000002 R14: 00000000fffffff5 R15: ffff88805486a5d0 FS: 00007f4b34b836c0(0000) GS:ffff88808c549000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000020000000f000 CR3: 0000000040786000 CR4: 0000000000352ef0 Call Trace: ocfs2_xa_value_truncate+0x2d6/0x420 fs/ocfs2/xattr.c:1956 ocfs2_xa_prepare_entry fs/ocfs2/xattr.c:2215 [inline] ocfs2_xa_set+0x23dd/0x2ef0 fs/ocfs2/xattr.c:2293 ocfs2_xattr_block_set+0x3d2/0x3330 fs/ocfs2/xattr.c:3029 __ocfs2_xattr_set_handle+0x6b2/0xf40 fs/ocfs2/xattr.c:3431 ocfs2_xattr_set+0xf20/0x13a0 fs/ocfs2/xattr.c:3694 __vfs_setxattr+0x442/0x480 fs/xattr.c:223 __vfs_setxattr_noperm+0x12a/0x660 fs/xattr.c:257 vfs_setxattr+0x163/0x360 fs/xattr.c:344 do_setxattr fs/xattr.c:662 [inline] filename_setxattr+0x296/0x630 fs/xattr.c:690 path_setxattrat+0x408/0x450 fs/xattr.c:734 __do_sys_lsetxattr fs/xattr.c:775 [inline] __se_sys_lsetxattr fs/xattr.c:771 [inline] __x64_sys_lsetxattr+0xbf/0xe0 fs/xattr.c:771 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f4b33d9de99 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:00007f4b34b82fe8 EFLAGS: 00000246 ORIG_RAX: 00000000000000bd RAX: ffffffffffffffda RBX: 00007f4b34025fa0 RCX: 00007f4b33d9de99 RDX: 0000200000000080 RSI: 00002000000000c0 RDI: 0000200000000100 RBP: 00007f4b33e33eaf R08: 0000000000000000 R09: 0000000000000000 R10: 000000000000fe37 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f4b34026038 R14: 00007f4b34025fa0 R15: 00007ffd4526fe68 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:ocfs2_xattr_extend_allocation fs/ocfs2/xattr.c:747 [inline] RIP: 0010:ocfs2_xattr_value_truncate+0x1738/0x1740 fs/ocfs2/xattr.c:868 Code: 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c be eb ff ff 4c 89 f7 48 89 f3 e8 d6 44 3d fe 48 89 de e9 ab eb ff ff e8 c9 19 ce fd 90 <0f> 0b 66 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 0018:ffffc9000f78e940 EFLAGS: 00010283 RAX: ffffffff83f86807 RBX: 0000000000000002 RCX: 0000000000100000 RDX: ffffc9000ee51000 RSI: 0000000000001097 RDI: 0000000000001098 RBP: ffffc9000f78ec70 R08: ffff888000ec2540 R09: 0000000000000006 R10: 00000000fffffffc R11: 0000000000000002 R12: fffff52001ef1d3c R13: 0000000000000002 R14: 00000000fffffff5 R15: ffff88805486a5d0 FS: 00007f4b34b836c0(0000) GS:ffff88808c549000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000001480 CR3: 0000000040786000 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