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 4A09B16F83A for ; Fri, 5 Apr 2024 15:28:13 +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=1712330894; cv=none; b=tV0ILLGjOVVqLy9mirVjN0BN0SFglvPyoiIrC28T0KHK+ur5Zyrlyt1cSvz6l0u9Olb2bC1z0af4g3GZW5Ctv2wr03YebBwHuFwY5iXsQ6iDuqzlN7fcT4ZsMfraCax69Umq3O48jwGn2QKvQMj3WtFxqRjJarBhSq0WpjMw1BM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712330894; c=relaxed/simple; bh=Ua4UH4I4k/JeMFUwY40iLcsmX8BFMt/ki6Da//Nmsic=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=GU2MUTUYKTnL3Al2QZKSLsD0fdCCtPsTOFkZSl6t9DnmMFzla599kgFYE453I27tpsLuZlGP8GqlUW+mF/ZI74mAvuQjt5/NEd8tJ8/za5ek9YcY3tlLohpXhoo1E8O6kZ+q30WiSlLCOGvWgWkJdoeG02pjyPpKvDfghnT5fB0= 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-7cf265b30e2so234925939f.1 for ; Fri, 05 Apr 2024 08:28:13 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1712330892; x=1712935692; 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=42yxhYql2V3Voi1huQg+HWg+/wPkrovGkKGYzhUjPcg=; b=Y5uhpWje7tb3htHWYXge7giZwqNmCUEsRxpkuqco45iplVnHoUFIK4fxJ6l22PK3/C C/kLneVOdx0rSXnCl2HBjSS7nRI/V+RM7bRzbBYmyzb3g3U8/9ks8gYxThxc8Qbq6vdY 8qcLgxvgkkYkhw6xpAUC2ci5ufM3IM3mUdMmh6RWl+GZ+Q0BTcDDUCNbeIjEdGr29kXD 6nrqja0AFNvEE9zQPvQbEwxh3llaEEobSaUfbGScgAEdSY2ZP8KIvJnnHz2d72oHEDSP 9K34NhfivxPqaYUDzVzzN/+PBDuPg0aXPKJsk1Sw0iw/FHm9/m63MdQGQUCbZZIpgANO mY2A== X-Gm-Message-State: AOJu0YyVnn8o3dmv5IO3Y0gyk+XKTRz1TAazxNKT6ecDw/pd2d+kaCR8 R/BAy8H/225PQTTPkiaaoMMo9wDxnaoSvd9+KVgcJBDInK98BEBRzO17lOBUlqup+Z7RrbWw0WJ GoAHwiRoEncNId9eb4nJLel42u/WJENxDElHZAiHm4zvFxAnEZj+plXEAeg== X-Google-Smtp-Source: AGHT+IFiVliGLH/CsHssqeRbqQj+tT3bVSC1Mc2+PPB4jxYcGYCdFEHXyhA97uZLAaUfspN2bkW4128na2xZIrx8jlIiZ7nvlt0N Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6638:1501:b0:480:ee35:85fa with SMTP id b1-20020a056638150100b00480ee3585famr66397jat.1.1712330892524; Fri, 05 Apr 2024 08:28:12 -0700 (PDT) Date: Fri, 05 Apr 2024 08:28:12 -0700 In-Reply-To: <00000000000003b4af060de27f6b@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000096521906155b1ad2@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; }