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=-7.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,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 D7CA5C4320A for ; Sun, 25 Jul 2021 06:06:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B164460F39 for ; Sun, 25 Jul 2021 06:06:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229689AbhGYFZe (ORCPT ); Sun, 25 Jul 2021 01:25:34 -0400 Received: from mail.kernel.org ([198.145.29.99]:39924 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229460AbhGYFZe (ORCPT ); Sun, 25 Jul 2021 01:25:34 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 1F24660F11; Sun, 25 Jul 2021 06:06:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1627193164; bh=ZwACYUIuv3VQ3Zylln4xFkQ+c4zLUmOSSX/7oAfYllI=; h=References:From:To:Cc:Subject:In-reply-to:Date:From; b=aXX31zvkZ/ZwRtrJ3CgF6K3/zuHt5yQO2YeSv/tJ/DR+fOp6ZMReR+VNh3ZYF5HnU RaNG+olL1p6swrh0aV8wmrB4R57fUbAQHwAvow+G5lqm6TLHb3b9oFHipbEkzKUJhc Wf6tdusC/te0KJOoNTy7juJyeCmZYUNQCu0OhHunIGiUl85Kf8NdnWzP/aXSepfyWx 5bzaRtu6vo4zaIxS4hUPGvJrknWPlTjUlMz2+qc17d0fGgPGFIdbqcYaldE5aGglrb 6qv7w8IyLelLmXtQbxPeCj7F7qfIkWHYaZb5VgNEMHnUkR2t4UCEu57te1A2B7ZHzS pd/KUfAmlIqMQ== References: <1623923899-16759-1-git-send-email-wcheng@codeaurora.org> <2e01c435-9ecc-4e3b-f55c-612a86667020@codeaurora.org> <2ae9fa6a-3bb1-3742-0dd3-59678bdd8643@gmail.com> <87v951ldlt.fsf@kernel.org> <87pmv9l1dv.fsf@kernel.org> <9dc6cd83-17b9-7075-0934-6b9d41b6875d@gmail.com> User-agent: mu4e 1.4.15; emacs 27.2 From: Felipe Balbi To: Ferry Toth Cc: Wesley Cheng , gregkh@linuxfoundation.org, robh+dt@kernel.org, agross@kernel.org, bjorn.andersson@linaro.org, frowand.list@gmail.com, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-msm@vger.kernel.org, jackp@codeaurora.org, heikki.krogerus@linux.intel.com, andy.shevchenko@gmail.com Subject: Re: [PATCH v10 0/6] Re-introduce TX FIFO resize for larger EP bursting In-reply-to: <9dc6cd83-17b9-7075-0934-6b9d41b6875d@gmail.com> Date: Sun, 25 Jul 2021 09:05:59 +0300 Message-ID: <87a6mbudvc.fsf@kernel.org> MIME-Version: 1.0 Content-Type: text/plain Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org Hi, Ferry Toth writes: >>>>> Hardware name: Intel Corporation Merrifield/BODEGA BAY, BIOS 542 >>>>> 2015.01.21:18.19.48 >>>>> RIP: 0010:0x500000000 >>>>> Code: Unable to access opcode bytes at RIP 0x4ffffffd6. >>>>> RSP: 0018:ffffa4d00045fc28 EFLAGS: 00010046 >>>>> RAX: 0000000500000000 RBX: ffff8cd546aed200 RCX: 0000000000000000 >>>>> RDX: 0000000000000000 RSI: ffff8cd547bfcae0 RDI: ffff8cd546aed200 >>>>> RBP: ffff8cd547bfcae0 R08: 0000000000000000 R09: 0000000000000001 >>>>> R10: ffff8cd541fd28c0 R11: 0000000000000000 R12: ffff8cd547342828 >>>>> R13: ffff8cd546aed248 R14: 0000000000000000 R15: ffff8cd548b1d000 >>>>> FS: 0000000000000000(0000) GS:ffff8cd57e200000(0000) knlGS:0000000000000000 >>>>> CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 >>>>> CR2: 0000000500000000 CR3: 000000000311e000 CR4: 00000000001006f0 >>>>> Call Trace: >>>>> ? dwc3_remove_requests.constprop.0+0x14d/0x170 >>>>> ? __dwc3_gadget_ep_disable+0x7a/0x160 >>>>> ? dwc3_gadget_ep_disable+0x3d/0xd0 >>>>> ? usb_ep_disable+0x1c/0x >>>>> ? u_audio_stop_capture+0x79/0x120 [u_audio] >>>>> ? afunc_set_alt+0x73/0x80 [usb_f_uac2] >>>>> ? composite_setup+0x224/0x1b90 [libcomposite] >>>>> ? __dwc3_gadget_kick_transfer+0x160/0x400 >>>>> ? dwc3_gadget_ep_queue+0xf3/0x1a0 >>>>> ? configfs_composite_setup+0x6b/0x90 [libcomposite] >>>>> ? configfs_composite_setup+0x6b/0x90 [libcomposite] >>>>> ? dwc3_ep0_interrupt+0x459/0xa40 >>>>> ? dwc3_thread_interrupt+0x8ee/0xf40 >>>>> ? __schedule+0x235/0x6c0 >>>>> ? disable_irq_nosync+0x10/0x10 >>>>> ? irq_thread_fn+0x1b/0x60 >>>>> ? irq_thread+0xc0/0x160 >>>>> ? irq_thread_check_affinity+0x70/0x70 >>>>> ? irq_forced_thread_fn+0x70/0x70 >>>>> ? kthread+0x122/0x140 >>>>> ? set_kthread_struct+0x40/0x40 >>>>> ? ret_from_fork+0x22/0x30 >>>> Do you mind enabling dwc3 traces and collecting them? Trying to figure >>>> out how we got here. >>>> >>> I'll try if I can get the same error by booting with USB in host mode >>> and then switch to device mode. If so I can enable traces and collect as >>> you explained me before. >>> >>> I'll try before monday, as then I fly for a holiday and will not be >>> available before rc5. >> you can enable all of those with kernel cmdline :-) >> >> https://www.kernel.org/doc/html/latest/admin-guide/kernel-parameters.html >> >> you need ftrace_dump_on_oops=1 and also need the correct options on >> trace_buf_size and trace_event. >> > On Edison-Arduino I have a switch to go to device mode, after which > udev triggers a script configure gadgets through configfs. > > I tried to log following these instructions: > > https://www.kernel.org/doc/html/latest/driver-api/usb/dwc3.html#reporting-bugs > > Unfortunately the kernel crashes so badly I can not get to the ` cp > /t/trace /root/trace.txt` line (after a while the watchdog kicks). > > What to do next? Pass ftrace_dump_on_oops to kernel cmdline. -- balbi