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 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id DF01FC433EF for ; Thu, 24 Feb 2022 16:00:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=BE5IbYBuyqN8QFv9VarOYK5/tCcvF46ta8BuCakX3LI=; b=knPBiiNEQOFXW3 x68HL4Z3AIl2d1prtW2omQJvhp8sgA6z9ng6pBxZ4D9A4+aHm9TqTn/K7nazkyd6/8gttQJIVIUAG C+Jf/OnslRYOnCkgmFoeeDpBKh0xlLMvevx1c4JSETpqGALcy0iZFFjewu6wWZGlMFZDVZRh7FB33 ySo1iCbCEPQ5hOORIPdsW2S1W+v1YrwqBOkYIhdK/Vp9D4RLrR2EprLZpNKx5INYrUGkvIRRNcxJa IQj/4ETVxwgeVMAZIdAtFTge9mJRjGuXUQKHHP4YzcnsMTu3l//Ur5uj7IaE+CdxKrEMfDIL5/9uZ w9t+lTShLqz+9ZTStHjw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nNGWI-001Pdz-0j; Thu, 24 Feb 2022 15:59:06 +0000 Received: from verein.lst.de ([213.95.11.211]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nNGWD-001PbV-5y; Thu, 24 Feb 2022 15:59:03 +0000 Received: by verein.lst.de (Postfix, from userid 2407) id 88B5268AFE; Thu, 24 Feb 2022 16:58:54 +0100 (CET) Date: Thu, 24 Feb 2022 16:58:54 +0100 From: Christoph Hellwig To: Boris Ostrovsky Cc: Christoph Hellwig , iommu@lists.linux-foundation.org, x86@kernel.org, Stefano Stabellini , Juergen Gross , Joerg Roedel , David Woodhouse , Lu Baolu , Robin Murphy , linux-arm-kernel@lists.infradead.org, xen-devel@lists.xenproject.org, linux-ia64@vger.kernel.org, linux-mips@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, linux-hyperv@vger.kernel.org, tboot-devel@lists.sourceforge.net, linux-pci@vger.kernel.org Subject: Re: cleanup swiotlb initialization Message-ID: <20220224155854.GA30938@lst.de> References: <20220222153514.593231-1-hch@lst.de> <09cb4ad3-88e7-3744-b4b8-a6d745ecea9e@oracle.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <09cb4ad3-88e7-3744-b4b8-a6d745ecea9e@oracle.com> User-Agent: Mutt/1.5.17 (2007-11-01) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220224_075901_552660_F55128D3 X-CRM114-Status: GOOD ( 13.76 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Thanks. This looks really strange as early_amd_iommu_init should not interact much with the changes. I'll see if I can find a AMD system to test on. On Wed, Feb 23, 2022 at 07:57:49PM -0500, Boris Ostrovsky wrote: > [=A0=A0 37.377313] BUG: unable to handle page fault for address: ffffc900= 42880018 > [=A0=A0 37.378219] #PF: supervisor read access in kernel mode > [=A0=A0 37.378219] #PF: error_code(0x0000) - not-present page > [=A0=A0 37.378219] PGD 7c2f2ee067 P4D 7c2f2ee067 PUD 7bf019b067 PMD 105a3= 0067 PTE 0 > [=A0=A0 37.378219] Oops: 0000 [#1] PREEMPT SMP NOPTI > [=A0=A0 37.378219] CPU: 14 PID: 1 Comm: swapper/0 Not tainted 5.17.0-rc5s= wiotlb #9 > [=A0=A0 37.378219] Hardware name: Oracle Corporation ORACLE SERVER E1-2c/= ASY,Generic,SM,E1-2c, BIOS 49004900 12/23/2020 > [=A0=A0 37.378219] RIP: e030:init_iommu_one+0x248/0x2f0 > [=A0=A0 37.378219] Code: 48 89 43 68 48 85 c0 74 c4 be 00 20 00 00 48 89 = df e8 ea ee ff ff 48 89 43 78 48 85 c0 74 ae c6 83 98 00 00 00 00 48 8b 43 = 38 <48> 8b 40 18 a8 01 74 07 83 8b a8 04 00 00 01 f6 83 a8 04 00 00 01 > [=A0=A0 37.378219] RSP: e02b:ffffc9004044bd18 EFLAGS: 00010286 > [=A0=A0 37.378219] RAX: ffffc90042880000 RBX: ffff888107260800 RCX: 00000= 00000000000 > [=A0=A0 37.378219] RDX: 0000000080000000 RSI: ffffea00041cab80 RDI: 00000= 000ffffffff > [=A0=A0 37.378219] RBP: ffffc9004044bd38 R08: 0000000000000901 R09: ffffe= a00041cab00 > [=A0=A0 37.378219] R10: 0000000000000002 R11: 0000000000000000 R12: ffffc= 90040435008 > [=A0=A0 37.378219] R13: 0000000000080000 R14: 00000000efa00000 R15: 00000= 00000000000 > [=A0=A0 37.378219] FS:=A0 0000000000000000(0000) GS:ffff88fef4180000(0000= ) knlGS:0000000000000000 > [=A0=A0 37.378219] CS:=A0 e030 DS: 0000 ES: 0000 CR0: 0000000080050033 > [=A0=A0 37.378219] CR2: ffffc90042880018 CR3: 000000000260a000 CR4: 00000= 00000050660 > [=A0=A0 37.378219] Call Trace: > [=A0=A0 37.378219]=A0 > [=A0=A0 37.378219]=A0 early_amd_iommu_init+0x3c5/0x72d > [=A0=A0 37.378219]=A0 ? iommu_setup+0x284/0x284 > [=A0=A0 37.378219]=A0 state_next+0x158/0x68f > [=A0=A0 37.378219]=A0 ? iommu_setup+0x284/0x284 > [=A0=A0 37.378219]=A0 iommu_go_to_state+0x28/0x2d > [=A0=A0 37.378219]=A0 amd_iommu_init+0x15/0x4b > [=A0=A0 37.378219]=A0 ? iommu_setup+0x284/0x284 > [=A0=A0 37.378219]=A0 pci_iommu_init+0x12/0x37 > [=A0=A0 37.378219]=A0 do_one_initcall+0x48/0x210 > [=A0=A0 37.378219]=A0 kernel_init_freeable+0x229/0x28c > [=A0=A0 37.378219]=A0 ? rest_init+0xe0/0xe0 > [=A0=A0 37.963966]=A0 kernel_init+0x1a/0x130 > [=A0=A0 37.979415]=A0 ret_from_fork+0x22/0x30 > [=A0=A0 37.991436]=A0 > [=A0=A0 37.999465] Modules linked in: > [=A0=A0 38.007413] CR2: ffffc90042880018 > [=A0=A0 38.019416] ---[ end trace 0000000000000000 ]--- > [=A0=A0 38.023418] RIP: e030:init_iommu_one+0x248/0x2f0 > [=A0=A0 38.023418] Code: 48 89 43 68 48 85 c0 74 c4 be 00 20 00 00 48 89 = df e8 ea ee ff ff 48 89 43 78 48 85 c0 74 ae c6 83 98 00 00 00 00 48 8b 43 = 38 <48> 8b 40 18 a8 01 74 07 83 8b a8 04 00 00 01 f6 83 a8 04 00 00 01 > [=A0=A0 38.023418] RSP: e02b:ffffc9004044bd18 EFLAGS: 00010286 > [=A0=A0 38.023418] RAX: ffffc90042880000 RBX: ffff888107260800 RCX: 00000= 00000000000 > [=A0=A0 38.155413] RDX: 0000000080000000 RSI: ffffea00041cab80 RDI: 00000= 000ffffffff > [=A0=A0 38.175965] Freeing initrd memory: 62640K > [=A0=A0 38.155413] RBP: ffffc9004044bd38 R08: 0000000000000901 R09: ffffe= a00041cab00 > [=A0=A0 38.155413] R10: 0000000000000002 R11: 0000000000000000 R12: ffffc= 90040435008 > [=A0=A0 38.155413] R13: 0000000000080000 R14: 00000000efa00000 R15: 00000= 00000000000 > [=A0=A0 38.155413] FS:=A0 0000000000000000(0000) GS:ffff88fef4180000(0000= ) knlGS:0000000000000000 > [=A0=A0 38.287414] CS:=A0 e030 DS: 0000 ES: 0000 CR0: 0000000080050033 > [=A0=A0 38.309557] CR2: ffffc90042880018 CR3: 000000000260a000 CR4: 00000= 00000050660 > [=A0=A0 38.332403] Kernel panic - not syncing: Fatal exception > [=A0=A0 38.351414] Rebooting in 20 seconds.. > > > > -boris ---end quoted text--- _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel