From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oo1-f77.google.com (mail-oo1-f77.google.com [209.85.161.77]) (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 878D227FD43 for ; Wed, 25 Mar 2026 02:40:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.161.77 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774406430; cv=none; b=FTqA3dih6oJ9UCOu1PopNyTDophWjouZqKL0ZiSPVBZ2iHbeOzwnBCThGX8Xa9XObd9I55A+Qzzogixfuq1pBLZ4dwJi/sS8IjuEpLDuD+5byzLfERh3gq6RjsF2WauJRzTyT1VYCl/nNX0m+oZxJWX076lwTPIteNRrMeItUzw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774406430; c=relaxed/simple; bh=r2/SqIjLIWy0EUSMP3v29DKK68YqLCchwQbERUhn2nM=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=B9WSRL4I14HCOIR8/BiynC+3DYGI4sH98Ca+1rAU9CC41xmG8tf8tG6DtktJy+BtPtHBSgFlF71sQSXwdq97nNNd8Lmrba+cuSj5m7OKulHjBkz8POQYU7Ht9AKf7LNmLY7IVlHwCLnn0EVB0D+jn24ldbJu4pwuBkIJ/r9dtA8= 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=209.85.161.77 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-oo1-f77.google.com with SMTP id 006d021491bc7-67de83227fbso18965321eaf.0 for ; Tue, 24 Mar 2026 19:40:29 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1774406428; x=1775011228; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=06ZkxdPmjXJHAdYiuofRx86KOCd4GJenDBvOMPL3C0A=; b=iIxzBaZWA043ezd7DqD5oP5P0w6eLPd/9lI0SoaHDSezirLJw+vpH2N7wkIx/7Enyz YLS0GHk4ETO81dRjwuHqpQBCjtwHrAP1AakRACs88k4acAPE6TVRSIz2FBxKSaRIXe3C 8gC8H9l/I8RMXOire9mLfxg9ZPRbvbfydB9YqNWHY8vdbJuUHKYRJmShDU9JC7aEqVr+ xSk7O+D2OA1YSYq/T4+YSuaueCXLl0FpoQC8dx//kY4t+unOjG+Y1Sty/7GG7cGn9x8z EYoPhcoQfqYpkXkmFsArLvWIUXTypqmj817lujDJStUsV8qlciw51bm0RrsvN/le8Nqj AHGQ== X-Forwarded-Encrypted: i=1; AJvYcCUb652ScCos7lFYV5WvVhCiJGsXp0igSS65YU8JLiKEZNq4d09aiKo1KGj+t2YOOtQHt1SAiu8=@vger.kernel.org X-Gm-Message-State: AOJu0Yzghgz/MSdILawp2Pi5ChPx4I6L1QmDGdOpEHqH6ZuAIsubntHG e24PmzQt7cSO1+rMPRlllkVvi7h82gwiGr737vCFQKjKuvanrePa+RqD8Wgtz68YI19zGOhP57O fuCpztt3OCTVrlhWohoKXf4Lqa/EkRDAL7RqfFKzGnZ2BMFgYLe9f6QAItmw= Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:61a:b0:67d:e836:2e35 with SMTP id 006d021491bc7-67dff534a70mr1160458eaf.47.1774406428462; Tue, 24 Mar 2026 19:40:28 -0700 (PDT) Date: Tue, 24 Mar 2026 19:40:28 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <69c34b1c.050a0220.abc16.000b.GAE@google.com> Subject: [syzbot] [usb?] [net?] KMSAN: uninit-value in rtl8150_open (2) From: syzbot To: andrew+netdev@lunn.ch, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, netdev@vger.kernel.org, pabeni@redhat.com, petkan@nucleusys.com, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: c612261bedd6 Merge tag 'io_uring-7.0-20260320' of git://gi.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=155801d6580000 kernel config: https://syzkaller.appspot.com/x/.config?x=963de479f54c6dbb dashboard link: https://syzkaller.appspot.com/bug?extid=9db6c624635564ad813c compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/aa2bdf537bf6/disk-c612261b.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/8fcd98072431/vmlinux-c612261b.xz kernel image: https://storage.googleapis.com/syzbot-assets/737b94c52155/bzImage-c612261b.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+9db6c624635564ad813c@syzkaller.appspotmail.com usb 2-1: device reset failed ===================================================== BUG: KMSAN: uninit-value in set_carrier drivers/net/usb/rtl8150.c:726 [inline] BUG: KMSAN: uninit-value in rtl8150_open+0x1131/0x1360 drivers/net/usb/rtl8150.c:763 set_carrier drivers/net/usb/rtl8150.c:726 [inline] rtl8150_open+0x1131/0x1360 drivers/net/usb/rtl8150.c:763 __dev_open+0x8e3/0xd40 net/core/dev.c:1702 __dev_change_flags+0x32f/0x950 net/core/dev.c:9764 netif_change_flags+0x8d/0x1e0 net/core/dev.c:9827 dev_change_flags+0x18c/0x320 net/core/dev_api.c:68 devinet_ioctl+0x10dd/0x25a0 net/ipv4/devinet.c:1199 inet_ioctl+0x4c0/0x6f0 net/ipv4/af_inet.c:1015 sock_do_ioctl net/socket.c:1254 [inline] sock_ioctl+0x769/0x1140 net/socket.c:1375 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:597 [inline] __se_sys_ioctl+0x23c/0x400 fs/ioctl.c:583 __x64_sys_ioctl+0x97/0xe0 fs/ioctl.c:583 x64_sys_call+0x1975/0x3ea0 arch/x86/include/generated/asm/syscalls_64.h:17 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x134/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f Local variable tmp.i created at: set_carrier drivers/net/usb/rtl8150.c:723 [inline] rtl8150_open+0xc26/0x1360 drivers/net/usb/rtl8150.c:763 __dev_open+0x8e3/0xd40 net/core/dev.c:1702 CPU: 1 UID: 0 PID: 5428 Comm: dhcpcd Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 ===================================================== --- 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