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=-3.9 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,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 6E646C433E1 for ; Tue, 18 Aug 2020 12:44:11 +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 BC5A1206B5 for ; Tue, 18 Aug 2020 12:44:10 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=ellerman.id.au header.i=@ellerman.id.au header.b="m8vA/J8P" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org BC5A1206B5 Authentication-Results: mail.kernel.org; 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dkim-atps=neutral Received: from authenticated.ozlabs.org (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-256) server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by mail.ozlabs.org (Postfix) with ESMTPSA id 4BW9X45kLCz9sTH; Tue, 18 Aug 2020 22:41:40 +1000 (AEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ellerman.id.au; s=201909; t=1597754500; bh=92T+JTRUiBj8LogWLq7x8AB1yPnegUccBvHHOB6a+Gg=; h=From:To:Cc:Subject:In-Reply-To:References:Date:From; b=m8vA/J8PF5b7d408Wrip0PPk3RfDiYyHPG9Pa2XDrokyFOXkXb2KQGNdcxPQFZOGI jwAXR4Zi80UYXDgSOOipyqeJll5J5d1IeNnAImrSB7vv1uSzMQY+YpkN9vFQsJuMkq D6PMobFVTok+BYfyfMwRb6y56Bzo3FQzO8zw7if8elWEFOKa0yYMR7CjOQGsyM3rTn av4xCmScDPRW9o+gDTQ8kQEYsh1ttLGx6lO9682xnUmrT1Ia4XnFiI0sufMe9bBSxC nYNHzKSIPYGm34xNKKQklPCA4D5CJaXJNlpN3e2u7qgC9iXFnqHcigIrYVKL+Wg4TS E8fL1yIeDE6DQ== From: Michael Ellerman To: Sachin Sant , linuxppc-dev@lists.ozlabs.org Subject: Re: [powerpc] 5.9.0-rc1 boot failure on POWER9 PowerVM LPAR In-Reply-To: <2CD14C97-9145-4D98-8C7C-783B278663A2@linux.vnet.ibm.com> References: <2CD14C97-9145-4D98-8C7C-783B278663A2@linux.vnet.ibm.com> Date: Tue, 18 Aug 2020 22:41:39 +1000 Message-ID: <87a6ysi0sc.fsf@mpe.ellerman.id.au> MIME-Version: 1.0 Content-Type: text/plain 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: linux-kernel@vger.kernel.org Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" Sachin Sant writes: > 5.9.0-rc1 fails to boot on POWER9 PowerVM LPAR with following message Looks like: https://lore.kernel.org/linuxppc-dev/20200814150509.225615-1-vaibhav@linux.ibm.com/ cheers > Starting udev Kernel Device Manager... > [ OK ] Started udev Kernel Device Manager. > BUG: Kernel NULL pointer dereference on read at 0x00000188 > Faulting instruction address: 0xc0000000005417e0 > Oops: Kernel access of bad area, sig: 11 [#1] > LE PAGE_SIZE=64K MMU=Hash SMP NR_CPUS=2048 NUMA pSeries > Modules linked in: papr_scm(+) uio_pdrv_genirq uio sch_fq_codel ip_tables sd_mod t10_pi ibmvscsi scsi_transport_srp ibmveth > CPU: 14 PID: 7 Comm: kworker/u32:0 Not tainted 5.9.0-rc1-00085-g06a4ec1d9dc6 #1 > Workqueue: events_unbound async_run_entry_fn > NIP: c0000000005417e0 LR: c000000000541784 CTR: c000000000871e30 > REGS: c00000067871b710 TRAP: 0300 Not tainted (5.9.0-rc1-00085-g06a4ec1d9dc6) > MSR: 8000000000009033 CR: 24822484 XER: 00000000 > CFAR: c00000000054178c DAR: 0000000000000188 DSISR: 40000000 IRQMASK: 0 > GPR00: c000000000541784 c00000067871b9a0 c00000000173cb00 0000000000000000 > GPR04: c000000000f9eb50 0000000000000002 0000000000000001 c000000678689000 > GPR08: c000000000d45e20 0000000000000180 0000000000000001 0000000000000220 > GPR12: c000000000871e30 c00000001ec5ba00 c00000000017ba18 c000000678220e00 > GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 > GPR20: 0000000000000000 0000000000000000 fffffffffffffef7 ffffffffffffee4b > GPR24: 0000000000000000 0000000000000000 0000000000000000 0000000000000003 > GPR28: c0000000037eb018 c00000000166f9e8 c00000066992dd80 c000000000d45f00 > NIP [c0000000005417e0] internal_create_group+0x180/0x4e0 > LR [c000000000541784] internal_create_group+0x124/0x4e0 > Call Trace: > [c00000067871b9a0] [c000000000541784] internal_create_group+0x124/0x4e0 (unreliable) > [c00000067871ba60] [c000000000541d70] internal_create_groups.part.4+0x70/0x120 > [c00000067871bab0] [c0000000008293d0] device_add+0x470/0x970 > [c00000067871bb70] [c00000000086f028] nd_async_device_register+0x28/0xa0 > [c00000067871bbe0] [c000000000180fec] async_run_entry_fn+0x7c/0x220 > [c00000067871bc70] [c000000000170f20] process_one_work+0x260/0x510 > [c00000067871bd10] [c000000000171258] worker_thread+0x88/0x5e0 > [c00000067871bdb0] [c00000000017bbb4] kthread+0x1a4/0x1b0 > [c00000067871be20] [c00000000000d3d0] ret_from_kernel_thread+0x5c/0x6c > Instruction dump: > 7f07c378 38a00000 7fc3f378 4bffe47d 60000000 7c7a1b79 40820218 e93d0009 > 3b7b0001 7f7b07b4 2fa90000 419e0024 4192ff7c e8890000 38a00000 > ---[ end trace c238dab2fca3582d ]--- > > Kernel panic - not syncing: Fatal exception > > Have attached config > > thanks > -Sachin