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([2001:981:6fec:1:652f:ed8b:8adb:341b]) by smtp.gmail.com with ESMTPSA id bd24sm2578385edb.56.2021.07.24.13.59.36 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sat, 24 Jul 2021 13:59:37 -0700 (PDT) Subject: Re: [PATCH v10 0/6] Re-introduce TX FIFO resize for larger EP bursting To: Felipe Balbi , Wesley Cheng , gregkh@linuxfoundation.org, robh+dt@kernel.org, agross@kernel.org, bjorn.andersson@linaro.org, frowand.list@gmail.com Cc: 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 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> From: Ferry Toth Message-ID: <9dc6cd83-17b9-7075-0934-6b9d41b6875d@gmail.com> Date: Sat, 24 Jul 2021 22:59:36 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.11.0 MIME-Version: 1.0 In-Reply-To: <87pmv9l1dv.fsf@kernel.org> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Content-Language: en-US Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, Op 23-07-2021 om 13:23 schreef Felipe Balbi: > Ferry Toth writes: > >> Hi >> >> Op 23-07-2021 om 08:59 schreef Felipe Balbi: >>> Hi, >>> >>> Ferry Toth writes: >>>>>> kernel: configfs-gadget gadget: u_audio_start_playback:451 Error! >>>>>> kernel: configfs-gadget gadget: u_audio_start_playback:451 Error! >>>>>> kernel: dwc3 dwc3.0.auto: request 00000000fbc71244 was not queued to ep5in >>>>>> kernel: dwc3 dwc3.0.auto: request 00000000ad1b8c18 was not queued to ep5in >>>>>> kernel: dwc3 dwc3.0.auto: Fifosize(2154) > RAM size(2022) ep5in >>>>>> depth:115540359 >>>>>> kernel: configfs-gadget gadget: u_audio_start_playback:451 Error! >>>>>> kernel: configfs-gadget gadget: u_audio_start_playback:451 Error! >>>>>> kernel: dwc3 dwc3.0.auto: request 000000003c32dcc5 was not queued to ep5in >>>>>> kernel: dwc3 dwc3.0.auto: request 00000000b2512aa9 was not queued to ep5in >>>>>> >>>>>> Removing uac2 from the config makes the call trace go away, but the R/W >>>>>> speed does not change. >>>> I am testing with 5.14.0-rc2 and now related error appears (not in rc1). >>>> Disabling uac2 solves it still. Any idea what it could be? >>>> >>>> BUG: unable to handle page fault for address: 0000000500000000 >>>> #PF: supervisor instruction fetch in kernel mode >>>> #PF: error_code(0x0010) - not-present page >>>> PGD 0 P4D 0 >>>> Oops: 0010 [#1] SMP PTI >>>> CPU: 0 PID: 494 Comm: irq/14-dwc3 Not tainted >>>> 5.14.0-rc2-edison-acpi-standard #1 >>> (cool that you're running on ACPI heh) >> Thanks to Andy this is Edison-Arduino board with ACPI. >>>> 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? BTW there is a secondary problem not related to dwc3: the console is not working well and loosing chars. I can connect through wifi/ssh though.