linux-kernel - Re: [aarch64] [coresight_etm4x] [kernel 5.19.0-rc1] coresight-etm4x: probe of ARMHC500:20 failed with error -17

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Date:   Thu, 9 Jun 2022 08:45:10 +0100
From:   Suzuki K Poulose <suzuki.poulose@....com>
To:     Mathieu Poirier <mathieu.poirier@...aro.org>,
        Bruno Goncalves <bgoncalv@...hat.com>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        linux-arm-kernel@...ts.infradead.org,
        CKI Project <cki-project@...hat.com>,
        coresight@...ts.linaro.org
Subject: Re: [aarch64] [coresight_etm4x] [kernel 5.19.0-rc1] coresight-etm4x:
 probe of ARMHC500:20 failed with error -17

Hi Bruno

On 08/06/2022 16:55, Mathieu Poirier wrote:
> CC'ing the coresight mailing list and maintainers.
> 
> On Wed, Jun 08, 2022 at 03:20:12PM +0200, Bruno Goncalves wrote:
>> Hello,
>>
>> We recently started to hit this call trace when loading the
>> coresight-etm4x module.
>>
>> [   78.683475] coresight etm103: CPU103: etm v4.1 initialized
>> [   78.683645] sysfs: cannot create duplicate filename
>> '/devices/system/container/ACPI0004:00/ARMHC9FE:00/funnel0/connections/in:0'
>> [   78.683650] CPU: 17 PID: 2522 Comm: systemd-udevd Not tainted 5.19.0-rc1 #1
>> [   78.683653] Hardware name: HPE Apollo 70             /C01_APACHE_MB
>>          , BIOS L50_5.13_1.16 07/29/2020
>> [   78.683655] Call trace:

Please could you confirm that there are no duplicate entries for the 
Graph connection for funnel0 (ARMHC9FE:00) input port 0 ?

This looks like an issue in the ACPI table. The failing ETM
ACPI table describes the output port connection to the funnel0 inport 0
which I believe is connected to a different ETM that has been already
probed. Does the system boot fine with the warning ? If yes,
please could you check the existing link for "funnel0, in:0" ?

Suzuki

>> [   78.683657]  dump_backtrace+0xc4/0x130
>> [   78.683665]  show_stack+0x24/0x70
>> [   78.683668]  dump_stack_lvl+0x64/0x80
>> [   78.683673]  dump_stack+0x18/0x34
>> [   78.683676]  sysfs_warn_dup+0x70/0x90
>> [   78.683681]  sysfs_do_create_link_sd+0x13c/0x144
>> [   78.683683]  sysfs_create_link_sd+0x20/0x30
>> [   78.683685]  sysfs_add_link_to_group+0x48/0x74
>> [   78.683688]  coresight_add_sysfs_link+0xa4/0x114 [coresight]
>> [   78.683705]  coresight_make_links+0x98/0xdc [coresight]
>> [   78.683714]  coresight_register+0x1d4/0x3cc [coresight]
>> [   78.683721]  etm4_probe+0x1e0/0x334 [coresight_etm4x]
>> [   78.683729]  etm4_probe_amba+0x44/0xa0 [coresight_etm4x]
>> [   78.683735]  amba_probe+0x11c/0x1b0
>> [   78.683741]  really_probe+0x19c/0x3f0
>> [   78.683747]  __driver_probe_device+0x11c/0x190
>> [   78.683749]  driver_probe_device+0x44/0xf4
>> [   78.683753]  __driver_attach+0xd8/0x1b4
>> [   78.683756]  bus_for_each_dev+0x6c/0xb0
>> [   78.683758]  driver_attach+0x30/0x40
>> [   78.683761]  bus_add_driver+0x154/0x240
>> [   78.683763]  driver_register+0x84/0x140
>> [   78.683765]  amba_driver_register+0x30/0x44
>> [   78.683768]  etm4x_init+0xd8/0x1000 [coresight_etm4x]
>> [   78.683775]  do_one_initcall+0x40/0x220
>> [   78.683778]  do_init_module+0x50/0x1f4
>> [   78.683782]  load_module+0x940/0xaf0
>> [   78.683783]  __do_sys_finit_module+0x9c/0xfc
>> [   78.683785]  __arm64_sys_finit_module+0x2c/0x40
>> [   78.683787]  invoke_syscall+0x50/0x120
>> [   78.683790]  el0_svc_common.constprop.0+0xd4/0xf4
>> [   78.683792]  do_el0_svc+0x38/0x4c
>> [   78.683794]  el0_svc+0x34/0xd0
>> [   78.683797]  el0t_64_sync_handler+0x11c/0x150
>> [   78.683799]  el0t_64_sync+0x190/0x194
>> [   78.725063] coresight-etm4x: probe of ARMHC500:20 failed with error -17
>>
>> console log: https://s3.us-east-1.amazonaws.com/arr-cki-prod-datawarehouse-public/datawarehouse-public/2022/06/07/558044095/redhat:558044095_aarch64/tests/Boot_test/12104911_aarch64_1_test_console.log
>>
>> more logs: https://datawarehouse.cki-project.org/kcidb/tests/3797753
>> cki issue tracker: https://datawarehouse.cki-project.org/issue/1261
>>
>> kernel config: http://s3.amazonaws.com/arr-cki-prod-datawarehouse-public/datawarehouse-public/2022/06/07/558044095/redhat:558044095/redhat:558044095_aarch64/.config
>>
>> Thanks,
>> Bruno Goncalves
>>
>>
>> _______________________________________________
>> linux-arm-kernel mailing list
>> linux-arm-kernel@...ts.infradead.org
>> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

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