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,URIBL_BLOCKED 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 0090BC433E0 for ; Sat, 16 May 2020 13:53:53 +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 B7CDA20728 for ; Sat, 16 May 2020 13:53:52 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B7CDA20728 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 4.93) (envelope-from ) id 1jZxFn-0001H7-L1; Sat, 16 May 2020 09:53:27 -0400 Received: from omr1.cc.ipv6.vt.edu ([2607:b400:92:8300:0:c6:2117:b0e] helo=omr1.cc.vt.edu) by shelob.surriel.com with esmtps (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.93) (envelope-from ) id 1jZxFk-0001Gh-KE for kernelnewbies@kernelnewbies.org; Sat, 16 May 2020 09:53:24 -0400 Received: from mr2.cc.vt.edu (mr2.cc.vt.edu [IPv6:2607:b400:92:8400:0:90:e077:bf22]) by omr1.cc.vt.edu (8.14.4/8.14.4) with ESMTP id 04GDrMug013002 for ; Sat, 16 May 2020 09:53:23 -0400 Received: from mail-qv1-f71.google.com (mail-qv1-f71.google.com [209.85.219.71]) by mr2.cc.vt.edu (8.14.7/8.14.7) with ESMTP id 04GDrHIU006250 for ; Sat, 16 May 2020 09:53:22 -0400 Received: by mail-qv1-f71.google.com with SMTP id t11so4376826qvv.11 for ; Sat, 16 May 2020 06:53:22 -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=NJnN+kqSVSuh9gYl21o4tggUBvzQ1oZPUZrQPbWnWM4=; b=pNlOEnXKzMzyy4icsgoOFjOoLyAqyAEJhyKNVsiWr5S+fSXpEg5wuRS4t7dgX8zE/w mOjFAgitSheLC2wc0pQA/+Z+LaVXI1AWcbzqgDbk3GRiVuTUX8syyUek5jO60j1Io7hI Tgr79UDVz/u0Ee77YRsS6fDd6+PLInFSwQV/o9bkLOrh8DQTDI/l6OJZUmhWA+Krh6Ib SN6z+W3spKd0dfOP+hCJcNGts+x9E/pvHsXVAPKGKShPxRdwG8FtneQfwjHTx71pmtuG Txan03DdCRDLjeItx+9pKSfArpbDkN3FuEsrq2ZBScYHNZowuZVcw6oQA8j50/GWLsH8 G4Dg== X-Gm-Message-State: AOAM532phpcZX1zpMJqLWfZ7Y5SF92MZR+pewok5BZp3t1a0HlTzWAPD tiGBEn6yK+AnGj52eqvFCANayUyHqz7T3xWSxCOe07SvApO0rn4ixQY9PlVg+SUtrzuTqet6Znu zA9Oo8t0EsI79/TbsH7tnGijA9tZedprUwY1YaB8= X-Received: by 2002:ac8:5241:: with SMTP id y1mr8715926qtn.165.1589637196651; Sat, 16 May 2020 06:53:16 -0700 (PDT) X-Google-Smtp-Source: ABdhPJwrkONq+M0bkRR1Dwh4ZZf0CNT1BCSY3TbJEnC8GwaOrbA+HCLHd/J5k7yxwovJgx2tqd9kHA== X-Received: by 2002:ac8:5241:: with SMTP id y1mr8715913qtn.165.1589637196314; Sat, 16 May 2020 06:53:16 -0700 (PDT) Received: from turing-police ([2601:5c0:c001:c9e1::359]) by smtp.gmail.com with ESMTPSA id 99sm3441007qte.93.2020.05.16.06.53.14 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 16 May 2020 06:53:14 -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: Subhashini Rao Beerisetty Subject: Re: general protection fault vs Oops In-Reply-To: References: Mime-Version: 1.0 Date: Sat, 16 May 2020 09:53:13 -0400 Message-ID: <374485.1589637193@turing-police> Cc: linux-kernel@vger.kernel.org, kernelnewbies 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="===============8939559475407369263==" Errors-To: kernelnewbies-bounces@kernelnewbies.org --===============8939559475407369263== Content-Type: multipart/signed; boundary="==_Exmh_1589637193_23225P"; micalg=pgp-sha1; protocol="application/pgp-signature" Content-Transfer-Encoding: 7bit --==_Exmh_1589637193_23225P Content-Type: text/plain; charset=us-ascii On Sat, 16 May 2020 18:05:07 +0530, Subhashini Rao Beerisetty said: > In the first attempt when I run that test case I landed into “general > protection fault: 0000 [#1] SMP" .. Next I rebooted and ran the same > test , but now it resulted the “Oops: 0002 [#1] SMP". And the 0002 is telling you that there's been 2 previous bug/oops since the reboot, so you need to go back through your dmesg and find the *first* one. > In both cases the call trace looks exactly same and RIP points to > “native_queued_spin_lock_slowpath+0xfe/0x170".. The first few entries in the call trace are the oops handler itself. So... > May 16 12:06:17 test-pc kernel: [96934.567347] Call Trace: > May 16 12:06:17 test-pc kernel: [96934.569475] []__raw_spin_lock_irqsave+0x37/0x40 > May 16 12:06:17 test-pc kernel: [96934.571686] [] event_raise+0x22/0x60 [osa] > May 16 12:06:17 test-pc kernel: [96934.573935] [] multi_q_completed_one_buffer+0x34/0x40 [mcore] The above line is the one where you hit the wall. > May 16 12:59:22 test-pc kernel: [ 3011.405602] Call Trace: > May 16 12:59:22 test-pc kernel: [ 3011.407892] [] _raw_spin_lock_irqsave+0x37/0x40 > May 16 12:59:22 test-pc kernel: [ 3011.410256] [] event_raise+0x22/0x60 [osa] > May 16 12:59:22 test-pc kernel: [ 3011.412652] [] multi_q_completed_one_buffer+0x34/0x40 [mcore] And again. However, given that it's a 4.4 kernel from 4 years ago, it's going to be hard to find anybody who really cares. In fact. I'm wondering if this is from some out-of-tree or vendor patch, because I'm not finding any sign of that function in either the 5.7 or 4.4 tree. Not even a sign of ## catenation abuse - no relevant hits for "completed_one_buffer" or "multi_q" either I don't think anybody's going to be able to help unless somebody first identifies where that function is.... --==_Exmh_1589637193_23225P Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Comment: Exmh version 2.9.0 11/07/2018 iQIVAwUBXr/wSQdmEQWDXROgAQLmLQ//TxlbNV2RGPp3REQ8H1b2HJ7NxUwvwg9v UeVv+9WCMn2w6Ra/UKBybERvFWIrS2BSRDXrdl1L6J5Kw7gEbeUEyl73DR0qHO8e B8ahq4yuvwivG6jd2uN2qYsfCgvIgpYki/Rkb/72FtO+nY/VmzrxpYfVF+1mGHLd O5quR4peIOUgm+8XPZLmZJu6SIUcVAc6iXuei08MhaRqxtRw0sPcM7M++HelbEg5 +MqbiH/R87FcHVIP5x/BRw79drf2hQ7Fz+9VfAaQBpi6j2Y0HcgilTvnegyNk1qM ZITt4TLWgzbCeqFjwAq+cyF674mnSyFYv5Ef+sGfcuwwOxXkDKPlavaezRjunz1H XVIX9ENws/SITj/gS90SNJ32vmomnxICCBJGyGLUm8DZdyVim07h7tcaW7t9vjGe ZuID1kgm1xkr6c++SD+pCMlNu2Xk74SkOvox2ylbcln9xF2hO+mlZoHjSWGcg3co h+gocMcSVVHlWg5dmCR6ZpGZ5J88Mv/l3k2cpDE70lGyYy3rutjYcX0jrLHlTVCy McjFpaQi+HaDCiMTfLgZfg0wkhaANd1B4MOmDLOYiKW4ErxvywEEnjzEpj7iLJmt y+L1OXdZCdiRTPneLThvxGsGVtTiUJDKwAtGjcR0sJb8f1dkpIs035Vkjz1JGNm9 K6VW2Glkfy0= =1zv1 -----END PGP SIGNATURE----- --==_Exmh_1589637193_23225P-- --===============8939559475407369263== 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 --===============8939559475407369263==--