From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2AC50C54FD0 for ; Thu, 23 Apr 2020 20:59:39 +0000 (UTC) Received: from shelob.surriel.com (shelob.surriel.com [96.67.55.147]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id B7B0B20736 for ; Thu, 23 Apr 2020 20:59:37 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B7B0B20736 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=vt.edu Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=kernelnewbies-bounces@kernelnewbies.org Received: from localhost ([::1] helo=shelob.surriel.com) by shelob.surriel.com with esmtp (Exim 4.92.3) (envelope-from ) id 1jRiw5-0003uQ-Gg; Thu, 23 Apr 2020 16:59:05 -0400 Received: from omr2.cc.ipv6.vt.edu ([2607:b400:92:8400:0:33:fb76:806e] helo=omr2.cc.vt.edu) by shelob.surriel.com with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.92.3) (envelope-from ) id 1jRiw1-0003uB-9h for kernelnewbies@kernelnewbies.org; Thu, 23 Apr 2020 16:59:01 -0400 Received: from mr1.cc.vt.edu (mr1.cc.ipv6.vt.edu [IPv6:2607:b400:92:8300:0:31:1732:8aa4]) by omr2.cc.vt.edu (8.14.4/8.14.4) with ESMTP id 03NKwx4Q016538 for ; Thu, 23 Apr 2020 16:58:59 -0400 Received: from mail-qk1-f197.google.com (mail-qk1-f197.google.com [209.85.222.197]) by mr1.cc.vt.edu (8.14.7/8.14.7) with ESMTP id 03NKwsBe010914 for ; Thu, 23 Apr 2020 16:58:59 -0400 Received: by mail-qk1-f197.google.com with SMTP id d1so8162259qkc.8 for ; Thu, 23 Apr 2020 13:58:59 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:from:to:cc:subject:in-reply-to:references :mime-version:content-transfer-encoding:date:message-id; bh=gSA7SnHzZcK3Bq9QPt1Q89vjunNVdBI5Bn90+Lj5hMU=; b=SB6zaqyvFIcdl/MRU6GKI+qkeBUD2E05TqODsKtBPRKN1153s8sJGuU34OGzR//jgC gws0JeUUgDvWO+AmwQ21YANZIvFHrVA7JtJTzV67uMfJdk53UsdDep7O47GrPoF56AMC 6knWKaPwcU0Wj8N0758xzQwhXAKbeNAEmsu5wuMpUo71OloWJmBnSwmDKNu9CFn1+LyA fsj43xbGKKbFFfvAcCkQaqGbYWXw0qM0Cm67T5xSQq+Fz60D0HmyvBhjrAFswsSyYgrG +QojyL95cGYtwh3r6EPwD9iAVHGC66e2iwuS9uCeRMuBQqhKywVDai5jmKZ1+mZtEx3H 15og== X-Gm-Message-State: AGi0PuaU5RFysRhFdDeyAIkIW3KK+oGaTrb2pfiiGFuSdJqPSjGqTuyV HC+uAf2/ztbROleL/+bNaHlkUwpb90ozZU/y98RPlhrpSL/hyrSj1A/0dlcDKuIKf9iJ6kcKD8w jX9AzUMvEpAZVX9ibUD5NR+sG30OWktjV6TtXn/A= X-Received: by 2002:ad4:4f14:: with SMTP id fb20mr6202648qvb.46.1587675534542; Thu, 23 Apr 2020 13:58:54 -0700 (PDT) X-Google-Smtp-Source: APiQypIKkY1WYzy5d4QUrv06kNT9XvbnQr2E1pUm4KN6KzhaP9PtcjvYTiwo85464WtisWYm11xcnw== X-Received: by 2002:ad4:4f14:: with SMTP id fb20mr6202625qvb.46.1587675534174; Thu, 23 Apr 2020 13:58:54 -0700 (PDT) Received: from turing-police ([2601:5c0:c001:c9e1::359]) by smtp.gmail.com with ESMTPSA id h2sm2351809qkh.91.2020.04.23.13.58.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 23 Apr 2020 13:58:51 -0700 (PDT) From: "Valdis Kl=?utf-8?Q?=c4=93?=tnieks" X-Google-Original-From: "Valdis Kl=?utf-8?Q?=c4=93?=tnieks" X-Mailer: exmh version 2.9.0 11/07/2018 with nmh-1.7+dev To: hemanth nandish Subject: Re: Invoke binary from kernel space In-Reply-To: References: Mime-Version: 1.0 Date: Thu, 23 Apr 2020 16:58:48 -0400 Message-ID: <35993.1587675528@turing-police> Cc: kernelnewbies@kernelnewbies.org X-BeenThere: kernelnewbies@kernelnewbies.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Learn about the Linux kernel List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: multipart/mixed; boundary="===============1055219758991887180==" Errors-To: kernelnewbies-bounces@kernelnewbies.org --===============1055219758991887180== Content-Type: multipart/signed; boundary="==_Exmh_1587675527_2263P"; micalg=pgp-sha1; protocol="application/pgp-signature" Content-Transfer-Encoding: 7bit --==_Exmh_1587675527_2263P Content-Type: text/plain; charset=us-ascii On Fri, 24 Apr 2020 01:23:45 +0530, hemanth nandish said: > This function works as expected and a new thread is spawned. > Now when I try to directly call do_execve within my module by passing the > required arguments, I am getting -EFAULT error. > This is happening in this function: > > count(argv, MAX_ARG_STRINGS) > > What am I missing here? My first guess is "the NULL pointer that indicates the end of the argv list". --==_Exmh_1587675527_2263P Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Comment: Exmh version 2.9.0 11/07/2018 iQIVAwUBXqIBhwdmEQWDXROgAQL+aw//QPZ3FvS1PuNRnM50JeN4pKvjgncdJLi5 IYlABcDGTV8o8zFT/gSoamDp/kxQUWiB2v6nLKua1lQMONZWPx8scUv/3o8L5pDn ou7HYJylofIY/7YZTrMWzRTezObQPAX3OohqgTrHtaaTD2cPY1j0MoTgGQ6rh0Dc lFnblDMj7WcJmPvvYy0sWW+ldw7iBuycCDGRGVHSuz2lhL4/4z5nhSAqJhSxwRjb Fd47IBC5ILL5r/Nzwbv0sV7qijrgNX3fT7RP425gScKQxgQuk8KUnbMuoONc1cEM 17HgIvsrrmcP5XGw6Dx35irHmeny5EIWiU0PeNii6Wi1IHayqEQ0RqnkmkRxIEz9 AFfiq9ORT5Aorc9G+3fhb9L4Sf4phxGGAOf+Ip+dWeVgk5Jx6NEpZt9Hp8Julkv3 EVjUlWn/oE0tqjQV3lqx4BIp8u0TyAWb5KXTWpJDJZCs0Tleu5dmIzzJL+ctBBNp MaFabV+9BLYPa5yRy5r4150hv92C9AIoA5CpEdSIrv2wPdJhy6GOmj42eYsJB8yX 3MI5mIxf/IHuswaBpuxm5NLbXL3vQDFyCW1gWyWbPE9kHSQhkmLuQpWLq3Hgxlu6 fukYbqedi5EfsEWO50IE++chCLUWKepptWpgoYUFXgW5hEtZdMMo56g5JKW9JnCm tGtpzM1gQJc= =ZSQW -----END PGP SIGNATURE----- --==_Exmh_1587675527_2263P-- --===============1055219758991887180== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ Kernelnewbies mailing list Kernelnewbies@kernelnewbies.org https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies --===============1055219758991887180==--