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=-4.2 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_SANE_1 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 54C6FC433DB for ; Thu, 25 Feb 2021 11:10:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E45C064E85 for ; Thu, 25 Feb 2021 11:10:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232601AbhBYLKe (ORCPT ); Thu, 25 Feb 2021 06:10:34 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39110 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230019AbhBYLKS (ORCPT ); Thu, 25 Feb 2021 06:10:18 -0500 Received: from mail-wr1-x435.google.com (mail-wr1-x435.google.com [IPv6:2a00:1450:4864:20::435]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D5F32C061574 for ; Thu, 25 Feb 2021 03:09:37 -0800 (PST) Received: by mail-wr1-x435.google.com with SMTP id b3so4826230wrj.5 for ; Thu, 25 Feb 2021 03:09:37 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=3ctGBM3oOvi3cpwulix/8QZ7Ac/Ws896zzc4IE99Z6A=; b=OUk20K8v1BIRa558hlpVOufBLV+bM1xz+TXswU+tvKAMgcnGThRHeJddjZb0hPZGAY ia55ZlIk65gERcAEdX5uHG8yI0U4rENFE7dBS8OkWMIdDcBKo1xTbGZ5+AyeufB1O7Nl NcwBbBIoM4K3mLDF/IilnhU2L+wui4FkOvC2p+1iVUSI+4zj0INB39acIFtKFFAFaGUH nSthBNjoVou2dQp2ZaawDCzQAWesJBsHyISO03C5c4Kp/8ygPH6mSlyVhf4G8ZRipmgd d6AW1rau20lF2Z0FP00iy5YeQKlSfNXUtpjYngMCE4Ns91lwKkjXJrkG02B+hIad5uHE s/QA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=3ctGBM3oOvi3cpwulix/8QZ7Ac/Ws896zzc4IE99Z6A=; b=HXExReTC27FaubigtBTu7LdJ2NJA1puODHqvobmjxSyLy5IscDX7GjzL2v3g3KMrhV totFVpsSrqU9sfl9n58A2rG+WVcOiHiy0vCIpWzIxeDUww2PYBGo8dpFoxVfJkL9IbSu py0/dge/23E5zi6hv6O6m7sQRHi/BctWzc8BBc/UtpvqUVWAEgrqnZg/FDBAg4CNVR4U ZD1YtbF878MEI4kBhTtmwxpuNRrmj2jBrEuo4jcZ1HpJyN1Nmfxiwsm9PfZnw8bEojMl DMCxxaqj57aZjvT/I9n5HsN8fcakvZ0lHWKqVq+EHhNNkjwj4RV3sTzpDtCpPGK2jm23 pFdQ== X-Gm-Message-State: AOAM530uGKoOcQFIZMGFcP71M4A5XtbBdZIuaL0NB7gbvDM5s7SifpTY cby//IqlafOyxTu+T05woyI= X-Google-Smtp-Source: ABdhPJwRv+ClIrkClr1a80/LliaAUwuoO2lnFVTfSIGx5AUqCiKIk2+VOuKbM04e15iSrbN9AxPA3A== X-Received: by 2002:a5d:4e10:: with SMTP id p16mr2927071wrt.360.1614251376490; Thu, 25 Feb 2021 03:09:36 -0800 (PST) Received: from localhost ([62.96.65.119]) by smtp.gmail.com with ESMTPSA id h10sm5264187wrp.22.2021.02.25.03.09.33 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 25 Feb 2021 03:09:34 -0800 (PST) Date: Thu, 25 Feb 2021 12:09:32 +0100 From: Thierry Reding To: Heiko Thiery Cc: Guillaume Tucker , Konrad Rzeszutek Wilk , Jianxiong Gao , Christoph Hellwig , "kernelci-results@groups.io" , linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org, Marek Szyprowski , Robin Murphy Subject: Re: next/master bisection: baseline.login on r8a77960-ulcb Message-ID: References: <60346234.1c69fb81.cd55e.770d@mx.google.com> <7ac4a45f-b95e-acc0-f5bc-e4f870ac0bf1@collabora.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="vAvTUIMDaSUl6gjb" Content-Disposition: inline In-Reply-To: User-Agent: Mutt/2.0.5 (da5e3282) (2021-01-21) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --vAvTUIMDaSUl6gjb Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Wed, Feb 24, 2021 at 10:39:42PM +0100, Heiko Thiery wrote: > Hi Christoph and all, >=20 > On 23.02.21 10:56, Guillaume Tucker wrote: > > Hi Christoph, > >=20 > > Please see the bisection report below about a boot failure on > > r8a77960-ulcb on next-20210222. > >=20 > > Reports aren't automatically sent to the public while we're > > trialing new bisection features on kernelci.org but this one > > looks valid. > >=20 > > The log shows a kernel panic, more details can be found here: > >=20 > > https://kernelci.org/test/case/id/6034bde034504edc9faddd2c/ > >=20 > > Please let us know if you need any help to debug the issue or try > > a fix on this platform. >=20 > I am also seeing this problem on an iMX8MQ board and can help test if you > have a fix. This is also causing boot failures on Jetson AGX Xavier. The origin is slightly different from the above kernelci.org report, but the BUG_ON is the same: [ 2.650447] ------------[ cut here ]------------ [ 2.650588] kernel BUG at include/linux/iommu-helper.h:23! [ 2.650729] Internal error: Oops - BUG: 0 [#1] PREEMPT SMP [ 2.654330] Modules linked in: [ 2.657474] CPU: 2 PID: 67 Comm: kworker/2:1 Not tainted 5.11.0-next= -20210225-00025-gfd15609b3a81-dirty #120 [ 2.667367] Hardware name: NVIDIA Jetson AGX Xavier Developer Kit (D= T) [ 2.674096] Workqueue: events deferred_probe_work_func [ 2.679169] pstate: 40400089 (nZcv daIf +PAN -UAO -TCO BTYPE=3D--) [ 2.684949] pc : find_slots.isra.0+0x118/0x2f0 [ 2.689494] lr : find_slots.isra.0+0x88/0x2f0 [ 2.693696] sp : ffff800011faf950 [ 2.697281] x29: ffff800011faf950 x28: 0000000000000001 [ 2.702537] x27: 0000000000000001 x26: 0000000000000000 [ 2.708131] x25: 0000000000000001 x24: 0000000105f03148 [ 2.713556] x23: 0000000000000001 x22: ffff800011559000 [ 2.718835] x21: ffff800011559a80 x20: 00000000edc00000 [ 2.724493] x19: 0000000000000000 x18: 0000000000000020 [ 2.729770] x17: ffff0003ffd7d160 x16: 0000000000000068 [ 2.735173] x15: ffff000080b43150 x14: ffffffffffffffff [ 2.740944] x13: ffff000082b5d791 x12: 0000000000000040 [ 2.746113] x11: ffff0000a0000248 x10: 0000000000000000 [ 2.751882] x9 : 0000000000000000 x8 : ffff0003fed30000 [ 2.757139] x7 : 0000000000000000 x6 : 0000000000000000 [ 2.762818] x5 : 0000000000000000 x4 : 0000000000000000 [ 2.767984] x3 : 00000001e8303148 x2 : 0000000000008000 [ 2.773580] x1 : ffffffffffffffff x0 : 00000000001db800 [ 2.778662] Call trace: [ 2.781136] find_slots.isra.0+0x118/0x2f0 [ 2.785137] swiotlb_tbl_map_single+0x80/0x1b4 [ 2.789858] swiotlb_map+0x58/0x200 [ 2.793355] dma_direct_map_page+0x148/0x1c0 [ 2.797386] dma_map_page_attrs+0x2c/0x54 [ 2.801411] dw_pcie_host_init+0x40c/0x4c0 [ 2.805633] tegra_pcie_config_rp+0x7c/0x1f4 [ 2.810155] tegra_pcie_dw_probe+0x3d0/0x60c [ 2.814185] platform_probe+0x68/0xe0 [ 2.817688] really_probe+0xe4/0x4c0 [ 2.821362] driver_probe_device+0x58/0xc0 [ 2.825386] __device_attach_driver+0xa8/0x104 [ 2.829953] bus_for_each_drv+0x78/0xd0 [ 2.833434] __device_attach+0xdc/0x17c [ 2.837631] device_initial_probe+0x14/0x20 [ 2.841680] bus_probe_device+0x9c/0xa4 [ 2.845160] deferred_probe_work_func+0x74/0xb0 [ 2.849734] process_one_work+0x1cc/0x350 [ 2.853822] worker_thread+0x20c/0x3ac [ 2.858018] kthread+0x128/0x134 [ 2.860997] ret_from_fork+0x10/0x34 [ 2.864508] Code: ca180063 ea06007f 54fffee1 b50001e7 (d4210000) [ 2.870547] ---[ end trace e5c50bdcf12b316e ]--- [ 2.875087] note: kworker/2:1[67] exited with preempt_count 2 [ 2.880836] ------------[ cut here ]------------ I've confirmed that reverting the following commits makes the system boot again: 47cfc5be1934 ("swiotlb: Validate bounce size in the sync/unmap path") c6f50c7719e7 ("swiotlb: respect min_align_mask") e952d9a1bc20 ("swiotlb: don't modify orig_addr in swiotlb_tbl_sync_sing= le") 567d877f9a7d ("swiotlb: refactor swiotlb_tbl_map_single") Let me know if I can help test any fixes for this. Thierry --vAvTUIMDaSUl6gjb Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEEiOrDCAFJzPfAjcif3SOs138+s6EFAmA3hWcACgkQ3SOs138+ s6HKQhAAhS7ALuFbl4xxOVHkxKu0YmVjEelr0mC2Yjy7HJoe433HsE8B3NdGoJgM 3vLOsSQsPtlaW9b69QspLyWoG073eHYKZwh2mvEAaAO7U3dWtNrcUs0z0xjTCGsy dfvkVU2pOQIN5jpeL4nSqhCr/MiAX+4jqvTZE808r9UHTogzmbO4IIQboDq4qsJZ 1/EGWiavl6ToX/Fzcu+TbsYDI8gIlUeW8B3nwMf+hKeTwwyYKi3Alen1bRurfrck 20VGaEaR2eZqcNnz/OzqeQsH+BxQOcjQ8AmQ0IqizqcyuL/euyowr4wBak+K9qYJ jZU/G/MBnzRj3Hg1LNtqpfogHLGA1RAXnMZcCj1Gq4jaVxF8bfzHu5fCgU0cL2BP +G/DhxPTNJqkQtTLWQRoSZQ6yzoQ1t/DqSz1QGfBS21N8m/gaSvYNLHr0+H6ehog 2Q+GcXCTiN24k3KoSLYVI90+Earko/3iRd7rvbvDaayZdowwTmAM7uRmuuoYIBwv Nc1UKRPwGRXJfx6nAMdN2oUwn6Ad8nD1uyIY/Umu7Gy0PUpGYZpX+yjggrudCcZN U8IFOr8ITW+XeP8zs/JCeVacVLuaqpeJKEXyGlicvcWkvGiyS30Gftvuz8lpzvGZ 06kOg0dM5EzcDv7wLQlFEnb20oSQkNKB80yJQ4GQhENZg9qvLco= =kU7p -----END PGP SIGNATURE----- --vAvTUIMDaSUl6gjb--