From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f200.google.com (mail-il1-f200.google.com [209.85.166.200]) (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 7FF9D335566 for ; Tue, 4 Nov 2025 17:52:46 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.200 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762278772; cv=none; b=EH8KRPvzd3ZuBa9BvAx3JUfJZSCfoDsoIUFCj59hTgJdGAK5Bgl0J09bhJc67uIFIJRaFzawGXNZLtmkJLgKXl6WY6a+5wZz8+pVTdrLGgfVjzw4STR92foL6t6Uzdayni+53TrAG3DHwM6LLWFvIssWzJuF7KpODG+pwKZlymg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762278772; c=relaxed/simple; bh=M3XGml+8+ve3rsexdBQyTjM3q8Kmjfd/ND3yvhWe8PQ=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To:Cc: Content-Type; b=llEMiEec8CRj2g6gIxFOSRnjizT/Wi05iFmEgy+UF422rMBTMhsnbS0lDHQkxa6RRv7yAGZTl8RfXQWuElhVXiz5NP5ekgZkpDdbgpIDtSrNWqUC+oYaS+5sVDxRw15cgCCbMPznw5OXvThTKNpcIvKI074R4CfyNVdVPi7cUq4= 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=209.85.166.200 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-f200.google.com with SMTP id e9e14a558f8ab-43335646758so20442885ab.3 for ; Tue, 04 Nov 2025 09:52:46 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1762278765; x=1762883565; h=cc:to:from:subject:message-id:in-reply-to:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=LpFOGuPutw7wJGPq0GSLdfYhbwZhDvMJew+wME/lNf4=; b=tOtBFBXbp0vdNTZgabhktkk7EB6htdNr6GWZ6JA28YhNUClcVL0tOGUzTPNWclRao8 EYvTgydv720vj2S7Lq5hnJbbVxqLwj5g/Is3xFiyEbkuTeLd0kwqksDCpJuPcfSDDFZ3 8mO49n+RGUNMVv2xRWo2AbmeMEgw1xlexybsLX84tQkBX3aSan58E+5qlq/QaF8wqM4M Mfj2oazZnn3feRuIDMs58VQwbh4C9ek5/LzGI4XJr+f1BwalJeATIw4GQouL8R0R/FMi TVMPQwKSDgRSzeAyoTkPGbJ2WBM3OuaHBt/Z0tQKYgHhpyWk3CPMoAP9y63qSqThec2n QcEA== X-Forwarded-Encrypted: i=1; AJvYcCUsfH/hbcJhH7OduZcp9GrScUnCHuCGEmA1rjj8p1QN9UflNoRSZHDjUFz85ft18i1KMwfvp3MqWAA=@vger.kernel.org X-Gm-Message-State: AOJu0YwK23GsBX15a+oxze6ks7JzvIasKxtnf8bzgz7b1KlNfx2aPLGV dTumXTQNaeFP4RpMNK8fyYYyIPTrVJd3YcO69ouyS1pnbNIWdKIWe8SYOoaeOq1jNKjpnTKqkvB yq+dhyMwWO1GbM7UkOKkIXlYKweJDB8d48l/hCWvJH82ZTGYIE3dOYH60RCE= X-Google-Smtp-Source: AGHT+IE9Eqckv8N6UfM90WIFhve0UGHfhbHNHJwnfe9KOIkGR0rD6N2S8bfcglrNLefFBnmMbgVzCt5LZHUs9GMf2vzxafAMk2sP Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:3303:b0:433:330a:a572 with SMTP id e9e14a558f8ab-433407b03camr2833605ab.13.1762278765743; Tue, 04 Nov 2025 09:52:45 -0800 (PST) Date: Tue, 04 Nov 2025 09:52:45 -0800 In-Reply-To: X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <690a3d6d.050a0220.98a6.00b6.GAE@google.com> Subject: Re: [PATCH] [PATCH] usb: rtl8150: Initialize buffers to fix KMSAN uninit-value in rtl8150_open From: syzbot To: andrew@lunn.ch Cc: andrew@lunn.ch, davem@davemloft.net, dharanitharan725@gmail.com, edumazet@google.com, gregkh@linuxfoundation.org, kuba@kernel.org, linux-usb@vger.kernel.org, netdev@vger.kernel.org, pabeni@redhat.com Content-Type: text/plain; charset="UTF-8" > On Tue, Nov 04, 2025 at 04:27:16PM +0000, Dharanitharan R wrote: >> KMSAN reported an uninitialized value use in rtl8150_open(). >> Initialize rx_skb->data and intr_buff before submitting URBs to >> ensure memory is in a defined state. >> >> Reported-by: syzbot+b4d5d8faea6996fd@syzkaller.appspotmail.com >> Signed-off-by: Dharanitharan R >> --- >> drivers/net/usb/rtl8150.c | 21 ++++++++++++++------- >> 1 file changed, 14 insertions(+), 7 deletions(-) >> >> diff --git a/drivers/net/usb/rtl8150.c b/drivers/net/usb/rtl8150.c >> index 278e6cb6f4d9..f1a868f0032e 100644 >> --- a/drivers/net/usb/rtl8150.c >> +++ b/drivers/net/usb/rtl8150.c >> @@ -719,14 +719,15 @@ static netdev_tx_t rtl8150_start_xmit(struct sk_buff *skb, >> >> static void set_carrier(struct net_device *netdev) >> { >> - rtl8150_t *dev = netdev_priv(netdev); >> - short tmp; >> + rtl8150_t *dev = netdev_priv(netdev); >> + short tmp; > > You are messing up the whitespace here. > > Did you not read your own patch and notice this problem? checkpatch > probably also complained. > > Andrew > > --- > pw-bot: cr I see the command but can't find the corresponding bug. The email is sent to syzbot+HASH@syzkaller.appspotmail.com address but the HASH does not correspond to any known bug. Please double check the address.