From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f206.google.com (mail-il1-f206.google.com [209.85.166.206]) (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 4567228000A for ; Wed, 11 Jun 2025 12:36:37 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.206 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1749645399; cv=none; b=WGJpPEQ1Ddw+hBvCggcgJ0S+RJ/9IF7RceArQ+w6Uikj8kmM1Mp68IJ/ufRKh2zhD45JZojK0B3cO/cP2KRAI2D7SGgQ5MtJAXhBFPvv85GIapNnauYimWO5eRo20Prv7Bz755ykq9TBcCxquclAxaLB2TZrCzzuJmdoWmSk7fE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1749645399; c=relaxed/simple; bh=uCvKZDotiP9ZjEzoiagEp86OqFBjkyOM3QpgLpJB/5M=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=aDcQRBnH/44w6lU3CcckzuURdcGUooNo4DwnYMwymuz1rRQOVJm/cbwwozmjqqFMJsyp4r0INf4Grv+X/BB71LzUQUnjCRLwD7tKyk0v+WDngZApZ0+3P77T8g7eSgGtq1ZOTp4Ce2b4CUVdIvf0wWVvFdfsPDDChlvlsIYz/4s= 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=209.85.166.206 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-il1-f206.google.com with SMTP id e9e14a558f8ab-3ddbd339f3dso71657075ab.0 for ; Wed, 11 Jun 2025 05:36:37 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1749645396; x=1750250196; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=vng/YzV4Bzb6RRDIX+KXOBf9o2CxIKJMdOrtad0eo1E=; b=U5X+tKmKzSzWJzReOYEZlWZFwpCoASUVm/QneStjsg4TLNrnUjyv4htZAucS8wQa5L tvHv47KSHgP/B8FjnQgK7Tzy0fa1GP8GnbCiY1arv3Nzwqb85UL6mtQTryPAQzNNrO4C OCpr58rh9d6iVgCh4psufFW3NF4puFk1nDfHPZ3ltPIyZzFCgl4PFiFvMCrW4uwOZATh Y1Xrf1SVKQN94rr2DPxIVEn0neslkWF8InBPGfnTXcsg9mH3Nude/fg6OkPMDew0au8h Jah7UY42UXILMW3tJ/5PR1fW9A8U1LUtAcqizc9ZjolrH277SqCCUTcYsZBrzwQ1djiW OlPA== X-Forwarded-Encrypted: i=1; AJvYcCUdKvg5qh9zNKh/3XDhjITAejGAMiW9qmj666cAPklv3Bmdl/z3Jwq0sqs2Za4PwWQLVucECqdJilKXhPc=@vger.kernel.org X-Gm-Message-State: AOJu0Yzh1rlX9mfwgQ86sdMky++zcHXE9M832qad0dHS7d0ljvJLzcfb aZ4CMLvzPNhdU+k6cLniQG4fL2IjU3xSc1iIaOLWc0/f6J4zUP9DC304pkkNsP1rShK/2+gk7ig o6pXZpf4WuClGAb8jp2/wGuCYl9nKa2oR7dvPDy+Mgq9gYOFSet9+9HOmkB8= X-Google-Smtp-Source: AGHT+IEbaV9OobI4y3/HlQ3UpH4KVgxxud1pe3uzFkgBOj6OhGhqJCvoimSBn3WgN3hJwve+Y8P3FGFf+FRQvXicv53Nz12B7jts Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:1fe5:b0:3dd:b762:ed1b with SMTP id e9e14a558f8ab-3ddf42f060fmr33724955ab.16.1749645396357; Wed, 11 Jun 2025 05:36:36 -0700 (PDT) Date: Wed, 11 Jun 2025 05:36:36 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <68497854.050a0220.33aa0e.036c.GAE@google.com> Subject: [syzbot] [wpan?] KMSAN: uninit-value in ieee802154_max_payload From: syzbot To: alex.aring@gmail.com, davem@davemloft.net, edumazet@google.com, horms@kernel.org, kuba@kernel.org, linux-kernel@vger.kernel.org, linux-wpan@vger.kernel.org, miquel.raynal@bootlin.com, netdev@vger.kernel.org, pabeni@redhat.com, stefan@datenfreihafen.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 5b032cac6225 Merge tag 'ubifs-for-linus-6.16-rc1' of git:/.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=14d0820c580000 kernel config: https://syzkaller.appspot.com/x/.config?x=529cf323140e1748 dashboard link: https://syzkaller.appspot.com/bug?extid=fe68c78fbbd3c0ad70ee compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/2e197ad38b02/disk-5b032cac.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/f05af0a6e9f6/vmlinux-5b032cac.xz kernel image: https://storage.googleapis.com/syzbot-assets/d7c0456f7931/bzImage-5b032cac.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+fe68c78fbbd3c0ad70ee@syzkaller.appspotmail.com ===================================================== BUG: KMSAN: uninit-value in ieee802154_max_payload+0x399/0x3c0 net/ieee802154/header_ops.c:372 ieee802154_max_payload+0x399/0x3c0 net/ieee802154/header_ops.c:372 ieee802154_header_create+0x99b/0xb90 net/mac802154/iface.c:403 wpan_dev_hard_header include/net/cfg802154.h:525 [inline] dgram_sendmsg+0xb3d/0x16d0 net/ieee802154/socket.c:677 ieee802154_sock_sendmsg+0x92/0xd0 net/ieee802154/socket.c:96 sock_sendmsg_nosec net/socket.c:712 [inline] __sock_sendmsg+0x330/0x3d0 net/socket.c:727 ____sys_sendmsg+0x7e0/0xd80 net/socket.c:2566 ___sys_sendmsg+0x271/0x3b0 net/socket.c:2620 __sys_sendmsg net/socket.c:2652 [inline] __do_sys_sendmsg net/socket.c:2657 [inline] __se_sys_sendmsg net/socket.c:2655 [inline] __x64_sys_sendmsg+0x211/0x3e0 net/socket.c:2655 x64_sys_call+0x32fb/0x3db0 arch/x86/include/generated/asm/syscalls_64.h:47 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xd9/0x210 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f Local variable hdr created at: ieee802154_header_create+0x4e/0xb90 net/mac802154/iface.c:360 wpan_dev_hard_header include/net/cfg802154.h:525 [inline] dgram_sendmsg+0xb3d/0x16d0 net/ieee802154/socket.c:677 CPU: 1 UID: 0 PID: 17215 Comm: syz.9.2647 Not tainted 6.15.0-syzkaller-13659-g5b032cac6225 #0 PREEMPT(undef) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 ===================================================== --- 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