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 8893D7B3E7 for ; Tue, 12 Mar 2024 14:28:00 +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=1710253681; cv=none; b=pw8LTKCdlxI+j/Ndg3oktDAuIWfMjMJI0D7pCByS08Fbhzcsp9XVPSr4jdShImS62tDvGLtdzKCS+za3rUyRga5K44CJibCFx3IFASq/RqT/w6qYCMyYzb79bGqq8k00XmanF+91tId0d6/3suCycWXJ4E/8K9HGh7eiigc9aDE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710253681; c=relaxed/simple; bh=0NRSGEr/wpTigC3/337hWEuSXfopriFf7Yywx9Tkk+o=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To:Cc: Content-Type; b=Qi3ep4pi8xjy+PpyRuGmxsWVEcdPcms4rZzM3HzvjwCKboODWx6lD5R5cMVreGxXzz3ndrerM8woscsXQUb4f4FxVdmrAh36+aIM+EoNaF9pneIuhbpIcgpNV73/J+7dXfKFhiMktnC5OxxW+2i5qUO3Kyepk5BZXXJpmV8GEIM= 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-7c86ecb5b37so533756939f.2 for ; Tue, 12 Mar 2024 07:28:00 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1710253679; x=1710858479; 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=OcPCnficp3UrC6QSvLYm7JvnZgLD0X7CWShh9pApXFY=; b=MW69qLckengA3/BrIv7HoWchjNOunmpKCGVMNDcyVjapp6QpS6Iai/zsUOk/ggSjkd qHyDzNNWNTJVP1A+zsKCQGXgPYM1x5kVgHkES8ei58zQyy5N1Mo6MBbQqLsTa+a8qQfu i+Wa8ZtW/vZGUwg17sjKCnyUZXzHjSFNsFAMvasuWBZicIV7j+Hnn0DTz7WipEh8/bSs WT2ymqMWOKP2VM9XIo2NgXKDIEmrPPeMHBoC4MHsZUGvWWVBPDsOfkzKy3a0BwZv+VbM N70WpktHwe4kydMmBDbK1vGxWIycMDUbqLLicSkTkQc4dtA3yO2TFO771ISWi4Jc3Q4u 39Ig== X-Forwarded-Encrypted: i=1; AJvYcCULNPNW6sQbEXW05N7wqpnuel71Z+W2lu1dTKcF5M+Hm9D+HOhr7ru7r9PYPWWafDyye27YMWBfW0yinynU/bj1IUj4JmQMsKjTQKEW X-Gm-Message-State: AOJu0YyHLGtszS5dJYv1Z7Svitx/kKl5Fm+UJQVlWW/F49+cxZgA7pqd K1aU4Fp31XdMJEXnVXEbu1OpIX+l540tRkMOztJDwBtrfU3T2Sz3U9ThnKMJf4D87wRz7gRUNiL 0XGgEh/DDvPmCk84ryDJ6+AdXl8p8Ym0Rdr7ihtSA5dYHdTc95LEy8SE= X-Google-Smtp-Source: AGHT+IEfBkTQGaUgFknZSPuk/XqHz1LXLE+kJmWtemdQZHPxMqazt8jMdMcuzQMdmo64g1s43fk7W5Sz8BnW7/A0Wbc+OLNWRWcA Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6638:2391:b0:474:c3b5:a8b7 with SMTP id q17-20020a056638239100b00474c3b5a8b7mr9249jat.6.1710253678329; Tue, 12 Mar 2024 07:27:58 -0700 (PDT) Date: Tue, 12 Mar 2024 07:27:58 -0700 In-Reply-To: X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000f90e5a06137776f9@google.com> Subject: Re: [PATCH net] nfc: nci: Fix uninit-value in nci_dev_up From: syzbot To: ryasuoka@redhat.com Cc: ryasuoka@redhat.com, syzkaller-bugs@googlegroups.com, linux-kernel@vger.kernel.org Content-Type: text/plain; charset="UTF-8" > #syz test: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git want either no args or 2 args (repo, branch), got 5 > > diff --git a/net/nfc/nci/ntf.c b/net/nfc/nci/ntf.c > index 994a0a1efb58..56624387e253 100644 > --- a/net/nfc/nci/ntf.c > +++ b/net/nfc/nci/ntf.c > @@ -765,6 +765,9 @@ void nci_ntf_packet(struct nci_dev *ndev, struct sk_buff *skb) > nci_opcode_oid(ntf_opcode), > nci_plen(skb->data)); > > + if (!nci_plen(skb->data)) > + goto end; > + > /* strip the nci control header */ > skb_pull(skb, NCI_CTRL_HDR_SIZE); >