From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-io1-f69.google.com (mail-io1-f69.google.com [209.85.166.69]) (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 EDA3A524DE for ; Mon, 18 Mar 2024 15:56:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.69 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710777371; cv=none; b=rQIeHfc3VoJ//2oWat4HhGM0eB7/FZPsReztM/Y/qSy5aMpQSFqJkSbQIwFVOg1qrf+EyN8sutOiYXgbANpsfXENz4f6e7Sp+UraEsuMOMllWJtPdISc3czryRrMxU2praVcvw305bRBut6H1ivyWRUR1xk8wiwR//3PPUlLp4U= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710777371; c=relaxed/simple; bh=VI4jxzNgLrtL4yc9lnV2mABn91LpO/tbxJWk0qqgnw4=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=gSNRhGBIjvY4F8RyP/HQIWexgBBzxdThOWUd6BMU47EwuRfvQmYD0e5zkxwEi8enOVmk74gWoUZ0BEhUFLiBXIxvXezoxdV9Wl4FX+UT4+SWqENj3zEyEpjO/2hTC2FQ8WzjogY1N3sW/JxDldkoXrDcf0TyTa/0yFtbEBuJfIA= 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=209.85.166.69 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-f69.google.com with SMTP id ca18e2360f4ac-7cc70b85c48so84769839f.3 for ; Mon, 18 Mar 2024 08:56:09 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1710777369; x=1711382169; h=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=l3ezPXJXQwsR7BDGZUJv1LoFcv0GvmsTyFJHfj+hkm0=; b=b4aP1uYoGsQiH7RAlQfDO/suGsrC+3TfkBZsuFr4st6QxWiJ4hZj2cqQ3Ekmn/U4+J go4AcXm60JQzPCMi8jqLsLJLzqR/elj0LesIvgKd7zBNn2jltHxNHzOlzJ2x9dlA+oLZ L+4dvGK+AJU5IczxisLQcx4NmnNTX7B8VIxQJj6SFsFjzAkQaWeDjObmnTImcvQd4yue f6ristpwW3iSy+Rjxfz1Wbh6/dDejjVerPLBsaD1JRSOqtkaHhGtK+q39+zA7p5Px9f0 gsnnolc+bb2S8QR5312fc7bvdX9QZwgWtfpq9ccf0zb+kLe7ZjSOMZ9f2A1uZla0XTPw PZ/g== X-Gm-Message-State: AOJu0YxVgeLVwUkOibUitD06OkBjOZZUwKkYHNbjvUs95hkBk+jK67bx RecG7W+ynkUy3VTEIkvIbjetnwVuV5qaBvd7q+r2xsaPY9rCULEvJ8bdP6tMEDi7Y1Jccqtg4SY HnSWg7e8zf8zEnymRAzPxnDJnpY/FQlCIFGrMeixRI25zm59QlDdwnnHT+A== X-Google-Smtp-Source: AGHT+IEUfGLyUpRaWvyNz7rB5R3LkvV/ohITqAazMCUjidNwTQ4B1Nn9/24mZ9rp8ukpiFTV+vDl5bMGJ0Ycv41XgklqDZC0V1TJ Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6638:2403:b0:474:f25a:6fb with SMTP id z3-20020a056638240300b00474f25a06fbmr932843jat.3.1710777369179; Mon, 18 Mar 2024 08:56:09 -0700 (PDT) Date: Mon, 18 Mar 2024 08:56:09 -0700 In-Reply-To: <000000000000169132060fc66db3@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000006148170613f165e2@google.com> Subject: Re: [syzbot] [PATCH net v2] nfc: nci: Fix uninit-value in nci_dev_up From: syzbot To: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="UTF-8" For archival purposes, forwarding an incoming command email to linux-kernel@vger.kernel.org. *** Subject: [PATCH net v2] nfc: nci: Fix uninit-value in nci_dev_up Author: ryasuoka@redhat.com #syz test: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 9f8413c4a66f2fb776d3dc3c9ed20bf435eb305e diff --git a/net/nfc/nci/core.c b/net/nfc/nci/core.c index 6c9592d05120..f471fc54c6a1 100644 --- a/net/nfc/nci/core.c +++ b/net/nfc/nci/core.c @@ -1512,6 +1512,11 @@ static void nci_rx_work(struct work_struct *work) nfc_send_to_raw_sock(ndev->nfc_dev, skb, RAW_PAYLOAD_NCI, NFC_DIRECTION_RX); + if (!nci_plen(skb->data)) { + kfree_skb(skb); + break; + } + /* Process frame */ switch (nci_mt(skb->data)) { case NCI_MT_RSP_PKT: