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=-9.0 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS autolearn=ham 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 8F578C433E2 for ; Thu, 3 Sep 2020 12:34:00 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (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 3CA7F20639 for ; Thu, 3 Sep 2020 12:34:00 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3CA7F20639 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=ellerman.id.au Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from bilbo.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 4Bj0bm5jlZzDr5X for ; Thu, 3 Sep 2020 22:33:56 +1000 (AEST) Received: from ozlabs.org (bilbo.ozlabs.org [203.11.71.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4Bj0RB04DrzDqkZ for ; Thu, 3 Sep 2020 22:26:30 +1000 (AEST) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=ellerman.id.au Received: by ozlabs.org (Postfix, from userid 1034) id 4Bj0R95l96z9sTd; Thu, 3 Sep 2020 22:26:29 +1000 (AEST) From: Michael Ellerman To: "Aneesh Kumar K.V" , linuxppc-dev@lists.ozlabs.org, mpe@ellerman.id.au In-Reply-To: <20200902040122.136414-1-aneesh.kumar@linux.ibm.com> References: <20200902040122.136414-1-aneesh.kumar@linux.ibm.com> Subject: Re: [PATCH v3] powerpc/mm: Remove DEBUG_VM_PGTABLE support on powerpc Message-Id: <159913592797.5893.5829441560236719450.b4-ty@ellerman.id.au> Date: Thu, 3 Sep 2020 22:26:29 +1000 (AEST) X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Anshuman Khandual Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" On Wed, 2 Sep 2020 09:31:22 +0530, Aneesh Kumar K.V wrote: > The test is broken w.r.t page table update rules and results in kernel > crash as below. Disable the support until we get the tests updated. > > [ 21.083519] kernel BUG at arch/powerpc/mm/pgtable.c:304! > cpu 0x0: Vector: 700 (Program Check) at [c000000c6d1e76c0] > pc: c00000000009a5ec: assert_pte_locked+0x14c/0x380 > lr: c0000000005eeeec: pte_update+0x11c/0x190 > sp: c000000c6d1e7950 > msr: 8000000002029033 > current = 0xc000000c6d172c80 > paca = 0xc000000003ba0000 irqmask: 0x03 irq_happened: 0x01 > pid = 1, comm = swapper/0 > kernel BUG at arch/powerpc/mm/pgtable.c:304! > [link register ] c0000000005eeeec pte_update+0x11c/0x190 > [c000000c6d1e7950] 0000000000000001 (unreliable) > [c000000c6d1e79b0] c0000000005eee14 pte_update+0x44/0x190 > [c000000c6d1e7a10] c000000001a2ca9c pte_advanced_tests+0x160/0x3d8 > [c000000c6d1e7ab0] c000000001a2d4fc debug_vm_pgtable+0x7e8/0x1338 > [c000000c6d1e7ba0] c0000000000116ec do_one_initcall+0xac/0x5f0 > [c000000c6d1e7c80] c0000000019e4fac kernel_init_freeable+0x4dc/0x5a4 > [c000000c6d1e7db0] c000000000012474 kernel_init+0x24/0x160 > [c000000c6d1e7e20] c00000000000cbd0 ret_from_kernel_thread+0x5c/0x6c > > [...] Applied to powerpc/fixes. [1/1] powerpc/mm: Remove DEBUG_VM_PGTABLE support on powerpc https://git.kernel.org/powerpc/c/675bceb097e6fb9769309093ec6f3d33a2fed9cc cheers