From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-io1-f70.google.com (mail-io1-f70.google.com [209.85.166.70]) (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 93114171065 for ; Fri, 5 Apr 2024 15:46:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.70 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712332012; cv=none; b=kPAV2dq+4oRTkZ4tCHar5kmuYgzVTy9yd/xVEtOFZcOMZAKjCbi+0srLaK5QtieTeQshm1lsCBgS0wMX/Mm1H+SNOu1ZizjLspGuRdhSkDeesW1WusH0YRo6w2DmL1V0T97lffZHTa0dvR+wS4IsvRkqSdj/qvDRmqpFTFJXn/Q= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712332012; c=relaxed/simple; bh=Cetg4OJSNRVbxOgEDST8sFZ/+xbB0Z55fdPod+6/III=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=Kf1vfnnEadeIA/4rNdA4qKLerM07HSxDYk8n6SGbpU+Zmyqz5HwJdyLEzYIF1kdQTBmNcFEo/chdFLIUCHucdMbu9EPKLadw6qvI+jbnW/otOhBxrUchKKJWGbCqeZcYiWl3VCWs8/UM/mXLIo4Wx7WBvkyNx0alaMmKBmH6y78= 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=209.85.166.70 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-f70.google.com with SMTP id ca18e2360f4ac-7cf265b30e2so236769839f.1 for ; Fri, 05 Apr 2024 08:46:50 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1712332010; x=1712936810; 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=A68bmHKEizwZFzsYAasj3lqwBy9ZBvAbavQZhExDaJQ=; b=M5apNBnWoprvjhTnL9lfJDqfJI1hdZnqiwQLC/TIoWEV1LLTqoJjv45nbjP17nFPu1 4UAjmZdUYNs9Wh1LJl45wloCw1iu8HNRfGdKPhCRy7W12vUpsxsKHgYHzJCR2stsYvKt efYlIIsAiSzpDHYkdNFR+PTkoTvj+yNs0Y94zkcB2KBj97xYTPRmon3wRQ+ajJk7QYhZ hMPcqKl++bzkZGdjZ+ARUxmJEk9jSTnReIJAVszrgbDl1lird5Kp/jtZ32iu/EwGc1+4 k6uw9VgOoDyj6u68YUKf2jMJ8LskqIzJad3oacUxXvtJWnmxBKaO8yXxLA3ofpq4t/5Q jlvA== X-Gm-Message-State: AOJu0YyVlnDP5panxNhMU45309Vo1AgLTLFMDBH7vyx8aJmDABiYIVRq HSJAztuL9R2H6ibgvbR9jXsoY6k/SqoAfDoTtELZAmP5tQQZwkdHS7VS7dqcOGFIWRPprcVS1Dr lCPeeStKIRz4nGMKzEE6YybPbS4FO6q742fX7v8oJpPaEVKFvHapJn9CBiA== X-Google-Smtp-Source: AGHT+IGT+TUYP5Pp44yEPfn1AzJpz/tSnDm3ChWW8uywi0ug5zw85AVBP3X13E4WvndyHx/ghAJiDlMLWQztFsN3+v5G1KYPNEqt Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6602:1687:b0:7c8:d517:1008 with SMTP id s7-20020a056602168700b007c8d5171008mr33930iow.0.1712332009909; Fri, 05 Apr 2024 08:46:49 -0700 (PDT) Date: Fri, 05 Apr 2024 08:46:49 -0700 In-Reply-To: <00000000000003b4af060de27f6b@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000030411406155b5d2d@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 cdad47b140fa..b7a020484131 100644 --- a/net/nfc/nci/core.c +++ b/net/nfc/nci/core.c @@ -1516,6 +1516,11 @@ 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 (!skb->len || !nci_plen(skb->data)) { + kfree_skb(skb); + break; + } + /* Process frame */ switch (nci_mt(skb->data)) { case NCI_MT_RSP_PKT: