From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-io1-f71.google.com (mail-io1-f71.google.com [209.85.166.71]) (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 375D526AFD for ; Fri, 5 Apr 2024 07:11:22 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.71 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712301083; cv=none; b=uQKfQGAJq2OJtyKTVpjdo68bAI3bsZbAvoD0A2S2g4oYiri4GRzmFxO8Tu7wbpp8YoWPg31xL7kGc4aovi4TypWsPg337/TLCoXRVA2UsD3TYORGmW11S4zckY2p47Tn951AJ578yzXodGEHlYwX6imUsBhMycOR+SRWtkKLrKo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712301083; c=relaxed/simple; bh=Dmljw7Ht/EdxSFtaZ+cNEc5rd8nUb2S5gELcaZh4maQ=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=qlCZ8TMryONmwZ1x0MCPg18Zp2Elh5G9BPYdpbvdGCGQSgWj8q4BmlOxWPa4twgoWq2vkxeqaIqaOfXerhBvi4V1RU7psjBa+bbY/v72Q7C0xx+r0qYCFkrGyp+9LEMU+3soc5IueUoc0CmeeDomYwp69adUOM21wCil5qSms5k= 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=209.85.166.71 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-f71.google.com with SMTP id ca18e2360f4ac-7c88a694b46so173282839f.1 for ; Fri, 05 Apr 2024 00:11:22 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1712301081; x=1712905881; 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=VI6tj/4+5h+8NlfXYKt2wu0xWUe1QHq5I82BNG3HMc8=; b=Ij/hVpqtJQqsLbj3N3/23esP6Td7DHRLs7jnzOq3Mz2kcN3am2D+iVkFYKTT+8mHcE YQbebzH5avOeOs2cQOqYu99YYN/zVUFHcDSsK8/Ys7onzGYQQqGO3YWwzCC2uLQMwfLP yk80ZrTdfGJZiXrSD6uZMXB+PmpwnlsZqWvO5S3GeVjH14COOVFYqmYGq8QoeaTKmo/s xHYqEbwaBk8n2uekQvOvrcTX1RTAnR3FL4UJ+sH0KqWO5ERocaYitwbkBIpppCLxX+w4 eso0wVfLaGehLO6SpIiY/NYyQMz8yloXjW9R8E571l4HbfPzg7TTvAifXMuEc5G/b4o/ Pagg== X-Gm-Message-State: AOJu0Yw3zzJO06ZYnKGdaxKnM9S9PPk/Fj/x+RMSmiJQzmqUHwgQUDjV 6HyETy4J3ww3Py/zj6b+vSSjZ50HqRAnasMT/pXJz/YAOlnDj6neAYzZDT359ClZfpCL08UeNkZ el+rBexD2sGGjjAD/vqx0rSj/N225q9UegrXM6sE5eg/n7M4Oxv2sbfKCsg== X-Google-Smtp-Source: AGHT+IFjFcyIZkGLKt+EGudnSbFptm3lmfY625/0RfGAzQA0W4uPaRLp5nZes1oiJg6WYriBrLCstjpm+jWzazZNsftMGJLft6Dq Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6638:1302:b0:47f:1e72:246b with SMTP id r2-20020a056638130200b0047f1e72246bmr21632jad.4.1712301081454; Fri, 05 Apr 2024 00:11:21 -0700 (PDT) Date: Fri, 05 Apr 2024 00:11:21 -0700 In-Reply-To: <00000000000003b4af060de27f6b@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000b6390106155429c5@google.com> Subject: Re: [syzbot] [PATCH net] nfc: nci: Fix uninit-value in nci_rx_work 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] nfc: nci: Fix uninit-value in nci_rx_work Author: ryasuoka@redhat.com #syz test: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 58c806d867bf265c6fd16fc3bc62e2d3c156b5c9 diff --git a/net/nfc/nci/core.c b/net/nfc/nci/core.c index 0d26c8ec9993..b7a020484131 100644 --- a/net/nfc/nci/core.c +++ b/net/nfc/nci/core.c @@ -1516,7 +1516,7 @@ 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)) { + if (!skb->len || !nci_plen(skb->data)) { kfree_skb(skb); break; }