From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-io1-f80.google.com (mail-io1-f80.google.com [209.85.166.80]) (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 6805F143C61 for ; Wed, 19 Nov 2025 05:43:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.80 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763531011; cv=none; b=oo1+Z0CjYtwhQWZqrNf/lJOwt6O8ob+nYgXG5qaTHjFgEvutLt50VKg/vdXP4SHNl/qI3D/OTEhKsP+xjfSNUwdW2P1sCQSttPCXZQDTEowIxItAJV/FRow7B8QkLJjlss51iR1t6bUI1o4XqYkS2Yu+RUgUlKNmT/xIyx6u1xU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763531011; c=relaxed/simple; bh=xq3VXvfIyDPMRlOTbXi9p1bYSiJTN2V7QV97YmtXq9g=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=Fz7/fXRv7N8PiVg5wO2sKPLimHP01ZVMREEliuoXBAo7r7kAcD44tKKvY4KrLDiabdQSsEsAiggXdxWX6Q7w5TYNaq2m/ZjQHMbkFYkNm3J2yr38ddCdz2/drmxUwcbRS4co7VBt7ws/E35v89a9G3NTTdDOc+mfACmeMBFyETQ= 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=209.85.166.80 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-io1-f80.google.com with SMTP id ca18e2360f4ac-94908fb82e0so195353039f.3 for ; Tue, 18 Nov 2025 21:43:29 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1763531008; x=1764135808; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=ugR7X8HvV6e32qc5iZzJIRITvUVF04LyoLD2VL/Z8HE=; b=OpZ2THW1mlzhuxb8aPaXAjkkNdauyhCmnj14o2u0MfEzijC0M5sVSfHgS8+yEqJmAb ZRdpbBTdtvZcHBDOfUIwMk4ZigtPo6Sn6KmWwDJwIJfFNlkkYxBeBNoQ22s46Iza/n/2 pSKaHgCe7CXxdRnxNU/sQpfVeyDiPu5iL1bEGTiJiVRFRWiC9iS74gmHwC82Fmn5Uy9l 4WvgXzn3G0y1KYDyvw5NjnSlynOKprDFeFIRlIDtW2bZxXQq3ssuZhWdJv0l0VXVUXdJ /7QANaTygq7RXK7RA8yb0bGzxe1BnYCj4Uopqvfmp4ipHtzM8rG0sk0D+JF3buxioyth wuZA== X-Forwarded-Encrypted: i=1; AJvYcCX0xo+ziC2nAarIwaxSEIukrfEGQ7LmNVRAKhVH4jg1W8y/z5I7zwfd1JohFZjG7Ko4bTNGlopXsq3mogE=@vger.kernel.org X-Gm-Message-State: AOJu0YwIiULy3sulXXEDjJDeLb80FPCVZ70jAVZznKXcW+KDDo8uFAXf HM9U+wvQcJNkGVPeFD2XMrVWgVD3sOza721tr+RSk/ue99StIzA83HWV2GSdnL2UwXPk5qSNOI3 Zry8axwSS1sWKZQowWYvXO0scQoxasNzWDgAuzaK0bUvumEaOcfMtDVaAov0= X-Google-Smtp-Source: AGHT+IHVIHkUL+Iua/cTDN1l7FPF8dbunbgVIxlIcTH6IF2VoOBVygM+fSmEbxUdEebArp7DLbKONRihYXVerdZch4Ipp2Ymym7j Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:1c2a:b0:435:a148:cbd with SMTP id e9e14a558f8ab-435a1480e34mr8398755ab.42.1763531008592; Tue, 18 Nov 2025 21:43:28 -0800 (PST) Date: Tue, 18 Nov 2025 21:43:28 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <691d5900.a70a0220.2ea503.000e.GAE@google.com> Subject: [syzbot] [jfs?] UBSAN: array-index-out-of-bounds in diAllocBit From: syzbot To: jfs-discussion@lists.sourceforge.net, linux-kernel@vger.kernel.org, shaggy@kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 7a0892d2836e Merge tag 'pci-v6.18-fixes-5' of git://git.ke.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=1285760a580000 kernel config: https://syzkaller.appspot.com/x/.config?x=929790bc044e87d7 dashboard link: https://syzkaller.appspot.com/bug?extid=015483fc71d1413f40ee 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-7a0892d2.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/a78c5c2efd8d/vmlinux-7a0892d2.xz kernel image: https://storage.googleapis.com/syzbot-assets/5a51cc5df960/bzImage-7a0892d2.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+015483fc71d1413f40ee@syzkaller.appspotmail.com loop0: detected capacity change from 0 to 32768 netlink: 96 bytes leftover after parsing attributes in process `syz.0.0'. ------------[ cut here ]------------ UBSAN: array-index-out-of-bounds in fs/jfs/jfs_imap.c:2105:2 index 8592359 is out of range for type 'struct iagctl[128]' CPU: 0 UID: 0 PID: 5318 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 Call Trace: dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 ubsan_epilogue+0xa/0x40 lib/ubsan.c:233 __ubsan_handle_out_of_bounds+0xe9/0xf0 lib/ubsan.c:455 diAllocBit+0xba2/0xd40 fs/jfs/jfs_imap.c:2105 diAllocIno fs/jfs/jfs_imap.c:1844 [inline] diAllocAG+0x12d9/0x1df0 fs/jfs/jfs_imap.c:1676 diAlloc+0x1d5/0x1680 fs/jfs/jfs_imap.c:1590 ialloc+0x8c/0x8f0 fs/jfs/jfs_inode.c:56 jfs_create+0x18d/0xa80 fs/jfs/namei.c:92 lookup_open fs/namei.c:3796 [inline] open_last_lookups fs/namei.c:3895 [inline] path_openat+0x14f4/0x3830 fs/namei.c:4131 do_filp_open+0x1fa/0x410 fs/namei.c:4161 do_sys_openat2+0x121/0x1c0 fs/open.c:1437 do_sys_open fs/open.c:1452 [inline] __do_sys_openat fs/open.c:1468 [inline] __se_sys_openat fs/open.c:1463 [inline] __x64_sys_openat+0x138/0x170 fs/open.c:1463 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f0a7ef8f6c9 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:00007f0a7fed8038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f0a7f1e5fa0 RCX: 00007f0a7ef8f6c9 RDX: 000000000000275a RSI: 0000200000000080 RDI: ffffffffffffff9c RBP: 00007f0a7f011f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f0a7f1e6038 R14: 00007f0a7f1e5fa0 R15: 00007ffde7416408 ---[ end trace ]--- --- 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