From: Felipe Balbi <balbi@kernel.org>
To: Ferry Toth <fntoth@gmail.com>, linux-usb@vger.kernel.org
Cc: felipe.balbi-VuQAYsv1563Yd54FQh9/CA-XMD5yJDbdMReXY1tMh2IBg@public.gmane.org
Subject: Re: BUG with linux 5.9.0 with dwc3 in gadget mode
Date: Tue, 20 Oct 2020 15:35:08 +0300 [thread overview]
Message-ID: <871rhtf537.fsf@kernel.org> (raw)
In-Reply-To: <a45db8d2-6902-7ec7-cab2-1436209a15a6@gmail.com>
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Ferry Toth <fntoth@gmail.com> writes:
Hi,
> Op 19-10-2020 om 09:14 schreef Ferry Toth:
>> Op 19-10-2020 om 07:45 schreef Felipe Balbi:
>>>
>>> Hi Andy,
>>>
>>> Ferry Toth <fntoth@gmail.com> writes:
>>>> This occurs with edison-arduino board, that has a nifty switch allowing
>>>> to switch between gadget/host mode. In host mode it boot fine, then
>>>> crashes when I flip the switch to gadget.
>>>>
>>>> The below trace if what I get from the console when booting with gadget
>>>> mode selected.
>>>>
>>>> The last kernel is used where everything is obviously working fine is
>>>> 5.6.0.
>>>>
>>>> The kernel is built specifically for the platform, nothing suspcious
>>>> going on the the dwc3 area, see
>>>> https://github.com/edison-fw/linux/commits/eds-acpi-5.9.0
>>>>
>>>> Magic signature found
>>>>
>>>> Starting kernel ...
>>>>
>>>> [ 2.395631] Initramfs unpacking failed: invalid magic at start of
>>>> compressed archive
>>>> Scanning for Btrfs filesystems
>>>> Starting version 243.2+
>>>> Kernel with acpi enabled detected
>>>> Loading acpi tables
>>>> Waiting for root device /dev/mmcblk0p8
>>>> 10Found device '/run/media/mmcblk0p8'
>>>> 9Init found, booting...
>>>> [ 10.834272] brcmfmac: brcmf_fw_alloc_request: using
>>>> brcm/brcmfmac43340-sdio for chip BCM43340/2
>>>> [ 11.179662] brcmfmac: brcmf_fw_alloc_request: using
>>>> brcm/brcmfmac43340-sdio for chip BCM43340/2
>>>> [ 11.194223] brcmfmac: brcmf_c_process_clm_blob: no clm_blob available
>>>> (err=-2), device may have limited channels available
>>>> [ 11.234779] brcmfmac: brcmf_c_preinit_dcmds: Firmware: BCM43340/2
>>>> wl0: Oct 23 2017 08:41:23 version 6.10.190.70 (r674464) FWID 01-98d71006
>>>> [ 12.401620] BUG: unable to handle page fault for address:
>>>> 0000000100000000
>>>> [ 12.408496] #PF: supervisor instruction fetch in kernel mode
>>>> [ 12.414145] #PF: error_code(0x0010) - not-present page
>>>> [ 12.419276] PGD 0 P4D 0
>>>> [ 12.421817] Oops: 0010 [#1] SMP PTI
>>>> [ 12.425307] CPU: 0 PID: 488 Comm: irq/15-dwc3 Not tainted
>>>> 5.9.0-edison-acpi-standard #1
>>>> [ 12.433297] Hardware name: Intel Corporation Merrifield/BODEGA BAY,
>>>> BIOS 542 2015.01.21:18.19.48
>>>> [ 12.442075] RIP: 0010:0x100000000
>>>> [ 12.445382] Code: Bad RIP value.
>>>> [ 12.448605] RSP: 0000:ffff9a95403fbbf8 EFLAGS: 00010046
>>>> [ 12.453827] RAX: 0000000100000000 RBX: ffff8ee8bd32f828 RCX:
>>>> ffff8ee8bacc4000
>>>> [ 12.460950] RDX: 00000000ffffff94 RSI: ffff8ee8bc01a5a0 RDI:
>>>> ffff8ee887228700
>>>> [ 12.468075] RBP: ffff8ee8bc01a5a0 R08: 0000000000000046 R09:
>>>> 0000000000000238
>>>> [ 12.475199] R10: 0000000000000004 R11: ffff8ee8ba8ba248 R12:
>>>> ffff8ee887228700
>>>> [ 12.482322] R13: ffff8ee8bd32f828 R14: 0000000000000002 R15:
>>>> ffff8ee8bae93200
>>>> [ 12.489449] FS: 0000000000000000(0000) GS:ffff8ee8be200000(0000)
>>>> knlGS:0000000000000000
>>>> [ 12.497524] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>>>> [ 12.503262] CR2: 0000000100000000 CR3: 000000003c5ae000 CR4:
>>>> 00000000001006f0
>>>> [ 12.510382] Call Trace:
>>>> [ 12.512841] ? dwc3_gadget_giveback+0xbf/0x120
>>>> [ 12.517286] ? __dwc3_gadget_ep_disable+0xc5/0x250
>>>> [ 12.522077] ? dwc3_gadget_ep_disable+0x3d/0xd0
>>>> [ 12.526608] ? usb_ep_disable+0x1d/0x80
>>>> [ 12.530451] ? u_audio_stop_capture+0x87/0x9a [u_audio]
>>>> [ 12.535680] ? afunc_set_alt+0x73/0x80 [usb_f_uac2]
>>>> [ 12.540562] ? composite_setup+0x20f/0x1b20 [libcomposite]
>>>> [ 12.546053] ? configfs_composite_setup+0x6b/0x90 [libcomposite]
>>>> [ 12.552060] ? configfs_composite_setup+0x6b/0x90 [libcomposite]
>>>> [ 12.558062] ? dwc3_ep0_delegate_req+0x24/0x40
>>>> [ 12.562502] ? dwc3_ep0_interrupt+0x40a/0x9d8
>>>> [ 12.566858] ? dwc3_thread_interrupt+0x880/0xf70
>>>> [ 12.571475] ? __schedule+0x3ee/0x640
>>>> [ 12.575143] ? irq_forced_thread_fn+0x70/0x70
>>>> [ 12.579497] ? irq_thread_fn+0x1b/0x60
>>>> [ 12.583245] ? irq_thread+0xd3/0x150
>>>> [ 12.586821] ? wake_threads_waitq+0x30/0x30
>>>> [ 12.591001] ? irq_thread_dtor+0x80/0x80
>>>> [ 12.594925] ? kthread+0xf9/0x130
>>>> [ 12.598238] ? kthread_park+0x80/0x80
>>>> [ 12.601901] ? ret_from_fork+0x22/0x30
>>>> [ 12.605644] Modules linked in: spi_pxa2xx_platform dw_dmac usb_f_uac2
>>>> u_audio usb_f_mass_storage usb_f_eem u_ether usb_f_serial u_serial
>>>> libcomposite pwm_lpss_pci snd_sof_pci snd_sof_intel_byt pwm_lpss
>>>> snd_sof_intel_ipc snd_sof_xtensa_dsp intel_mrfld_pwrbtn intel_mrfld_adc
>>>> snd_sof snd_sof_nocodec snd_soc_acpi spi_pxa2xx_pci brcmfmac brcmutil
>>>> leds_gpio hci_uart btbcm ti_ads7950 industrialio_triggered_buffer
>>>> kfifo_buf spidev ledtrig_heartbeat mmc_block extcon_intel_mrfld
>>>> sdhci_pci cqhci sdhci led_class mmc_core intel_soc_pmic_mrfld btrfs
>>>> libcrc32c xor zstd_compress zlib_deflate raid6_pq
>>>> [ 12.657416] CR2: 0000000100000000
>>>> [ 12.660729] ---[ end trace 9b92dea6da33c71e ]---
>>>
>>> It this something you can reproduce on your end? Ferry, can you get dwc3
>>> trace logs when this happens? ftrace_dump_on_oops may help here.
>>>
>> I will do that tonight. Is flipping on ftrace_dump_on_oops sufficient or
>> do I need to do more?
>>
>> BTW after posting this I found in host mode dwc3 is not working properly
>> either. No oops, but no driver get loaded on device plug in.
>>
> Not sure if this is what you are looking for (otherwise let me know):
>
> root@edison:/proc/sys/kernel# echo 1 > ftrace_dump_on_oops
> ## flip the switch from host to gadget
> root@edison:/proc/sys/kernel# [ 515.866590] BUG: kernel NULL pointer
> dereference, address: 0000000000000000
> [ 515.873553] #PF: supervisor read access in kernel mode
> [ 515.878682] #PF: error_code(0x0000) - not-present page
> [ 515.883814] PGD 0 P4D 0
> [ 515.886352] Oops: 0000 [#1] SMP PTI
> [ 515.889844] CPU: 0 PID: 490 Comm: irq/15-dwc3 Not tainted
> 5.9.0-edison-acpi-standard #1
> [ 515.897836] Hardware name: Intel Corporation Merrifield/BODEGA BAY,
> BIOS 542 2015.01.21:18.19.48
> [ 515.906621] RIP: 0010:dwc3_gadget_ep_dequeue+0x41/0x1c0
what do you get with:
$ gdb vmlinux
(gdb) l *(dwc3_gadget_ep_dequeue+0x41)
??
--
balbi
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next prev parent reply other threads:[~2020-10-20 12:35 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-16 20:21 BUG with linux 5.9.0 with dwc3 in gadget mode Ferry Toth
2020-10-19 5:45 ` Felipe Balbi
2020-10-19 7:14 ` Ferry Toth
2020-10-19 18:49 ` Ferry Toth
2020-10-20 12:35 ` Felipe Balbi [this message]
2020-10-20 21:01 ` Ferry Toth
2020-10-19 7:18 ` Ferry Toth
2020-10-20 12:32 ` Felipe Balbi
2020-10-20 19:46 ` Ferry Toth
2020-10-20 20:37 ` Ferry Toth
2020-10-20 22:10 ` Thinh Nguyen
2020-10-20 22:58 ` Thinh Nguyen
2020-10-21 1:47 ` Jack Pham
2020-10-21 1:56 ` Thinh Nguyen
2020-10-21 20:01 ` Ferry Toth
2020-10-22 9:23 ` Andy Shevchenko
2020-10-21 19:45 ` Ferry Toth
2020-10-21 19:50 ` Thinh Nguyen
2020-10-21 20:42 ` Ferry Toth
2020-10-21 23:32 ` Thinh Nguyen
2020-10-22 13:43 ` Andy Shevchenko
2020-10-27 20:13 ` Ferry Toth
2020-10-27 21:06 ` Jack Pham
2020-10-27 22:07 ` Ferry Toth
2020-10-27 21:16 ` Andy Shevchenko
2020-10-27 21:54 ` Ferry Toth
2020-10-28 9:18 ` Felipe Balbi
2020-11-05 21:29 ` Ferry Toth
2020-11-06 6:38 ` Felipe Balbi
2020-11-06 8:14 ` Ferry Toth
[not found] ` <326aa23e-fabd-f3d6-4778-d036858413a2@gmail.com>
2020-11-06 14:15 ` Felipe Balbi
[not found] ` <e21a5a77-9017-4cbe-a228-85357d660da5@gmail.com>
2020-11-07 8:01 ` Felipe Balbi
2020-11-07 13:37 ` Ferry Toth
2020-11-09 7:00 ` Felipe Balbi
2020-10-27 21:19 ` Andy Shevchenko
2020-10-19 19:46 ` Andy Shevchenko
2020-10-19 20:46 ` Ferry Toth
2020-10-20 13:27 ` Andy Shevchenko
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