On 14.03.22 14:02, Greg Gallagher wrote:
> 
> 
> On Mon, Mar 14, 2022 at 8:33 AM Jan Kiszka <jan.kis...@siemens.com
> <mailto:jan.kis...@siemens.com>> wrote:
> 
>     On 04.03.22 00:45, Greg Gallagher wrote:
>     >
>     >
>     > On Thu, Mar 3, 2022 at 1:20 PM Jan Kiszka <jan.kis...@siemens.com
>     <mailto:jan.kis...@siemens.com>
>     > <mailto:jan.kis...@siemens.com <mailto:jan.kis...@siemens.com>>>
>     wrote:
>     >
>     >     On 02.03.22 16:44, Greg Gallagher wrote:
>     >     >
>     >     >
>     >     > On Wed, Mar 2, 2022 at 1:48 AM Jan Kiszka
>     <jan.kis...@siemens.com <mailto:jan.kis...@siemens.com>
>     >     <mailto:jan.kis...@siemens.com <mailto:jan.kis...@siemens.com>>
>     >     > <mailto:jan.kis...@siemens.com
>     <mailto:jan.kis...@siemens.com> <mailto:jan.kis...@siemens.com
>     <mailto:jan.kis...@siemens.com>>>>
>     >     wrote:
>     >     >
>     >     >     Hi Greg,
>     >     >
>     >     >     something is going wrong on arm64 with latest ipipe version,
>     >     see e.g.
>     >     >
>     >     >   
>     >   
>       https://source.denx.de/Xenomai/xenomai-images/-/jobs/398455/raw
>     <https://source.denx.de/Xenomai/xenomai-images/-/jobs/398455/raw>
>     >   
>      <https://source.denx.de/Xenomai/xenomai-images/-/jobs/398455/raw
>     <https://source.denx.de/Xenomai/xenomai-images/-/jobs/398455/raw>>
>     >     >   
>     >   
>       <https://source.denx.de/Xenomai/xenomai-images/-/jobs/398455/raw
>     <https://source.denx.de/Xenomai/xenomai-images/-/jobs/398455/raw>
>     >   
>      <https://source.denx.de/Xenomai/xenomai-images/-/jobs/398455/raw
>     <https://source.denx.de/Xenomai/xenomai-images/-/jobs/398455/raw>>>
>     >     >     (same thing seen on HiKey as well)
>     >     >
>     >     >     Could you have a look?
>     >     >
>     >     >     Thanks,
>     >     >     Jan
>     >     >
>     >     >     --
>     >     >     Siemens AG, Technology
>     >     >     Competence Center Embedded Linux
>     >     >
>     >     >
>     >     > I'll take a look, it will be close to the end of the week
>     but i'll aim
>     >     > to have it root caused by the weekend.
>     >     >
>     >
>     >     Just tried locally with xenomai-images and qemu-arm64 (just
>     run smokey):
>     >
>     >     [  408.747349] Kernel panic - not syncing: kernel stack overflow
>     >     [  408.747591] CPU: 0 PID: 1577 Comm: systemd-journal Tainted:
>     G   
>     >         W         5.4.180+ #1
>     >     [  408.747762] Hardware name: linux,dummy-virt (DT)
>     >     [  408.747852] I-pipe domain: Xenomai
>     >     [  408.747941] Call trace:
>     >     ...
>     >     [  408.761131]  do_debug_exception+0x94/0x240
>     >     [  408.761255]  el1_dbg+0x18/0x8c
>     >     [  408.761329]  this_cpu_has_cap+0x60/0x7c
>     >     [  408.761423]  erratum_1418040_thread_switch+0x18/0x5c
>     >     [  408.761534]  __switch_to+0xf8/0x154
>     >     [  408.761622]  xnarch_switch_to+0x5c/0xc4
>     >     [  408.761711]  pipeline_switch_to+0x14/0x84
>     >     [  408.761803]  ___xnsched_run+0x154/0x240
>     >     [  408.761889]  pipeline_schedule+0x30/0x40
>     >     [  408.761999]  xnintr_core_clock_handler+0x250/0x260
>     >     [  408.762107]  dispatch_irq_head+0x84/0x120
>     >     [  408.762198]  __ipipe_dispatch_irq+0x19c/0x1c4
>     >     [  408.762293]  __ipipe_grab_irq+0x5c/0xa0
>     >     [  408.762377]  gic_handle_irq+0x54/0xb0
>     >     [  408.762457]  handle_arch_irq_pipelined+0x14/0x60
>     >     [  408.762557]  el0_irq_naked+0x5c/0x84
>     >     [  408.762905] SMP: stopping secondary CPUs
>     >
>     >     This dbg trap from erratum_1418040_thread_switch looks
>     suspicious, and
>     >     if I had to bet, I would say it somehow relates to [1] which
>     came with
>     >     v5.4.176. But more logical would [2] due to its switch from
>     static to
>     >     dynamic cpu_has_cap - but that is already in since v5.4.80...
>     >
>     >     Jan
>     >
>     >     [1]
>     >   
>      
> https://source.denx.de/Xenomai/ipipe-arm64/-/commit/a6d588572568c7431a9a3dc17f3c75962a2f070b
>     
> <https://source.denx.de/Xenomai/ipipe-arm64/-/commit/a6d588572568c7431a9a3dc17f3c75962a2f070b>
>     >   
>      
> <https://source.denx.de/Xenomai/ipipe-arm64/-/commit/a6d588572568c7431a9a3dc17f3c75962a2f070b
>     
> <https://source.denx.de/Xenomai/ipipe-arm64/-/commit/a6d588572568c7431a9a3dc17f3c75962a2f070b>>
>     >     [2]
>     >   
>      
> https://source.denx.de/Xenomai/ipipe-arm64/-/commit/71eea3d3df94ccdcf3b616d27d68d6c028c1968f
>     
> <https://source.denx.de/Xenomai/ipipe-arm64/-/commit/71eea3d3df94ccdcf3b616d27d68d6c028c1968f>
>     >   
>      
> <https://source.denx.de/Xenomai/ipipe-arm64/-/commit/71eea3d3df94ccdcf3b616d27d68d6c028c1968f
>     
> <https://source.denx.de/Xenomai/ipipe-arm64/-/commit/71eea3d3df94ccdcf3b616d27d68d6c028c1968f>>
>     >
>     >
>     >     --
>     >     Siemens AG, Technology
>     >     Competence Center Embedded Linux
>     >
>     >
>     > I just built a new image and I’ll have time to look into this probably
>     > tomorrow.
>     >
>     > Thanks for the help :)
>     >
> 
>     Any news on this? Do you need further support?
> 
>     Jan
> 
>     -- 
>     Siemens AG, Technology
>     Competence Center Embedded Linux
> 
> 
> Still working on it, I’ve unfortunately haven’t had a lot of time to
> focus on this. I should have more time this week.
> 
> If anyone has any ideas or patches they’d like me to try I can test them
> as well.
> 

Unrelated build warning, but somehow familiar from 4.19 or older:

WARNING: vmlinux.o(.text+0x94bf8c): Section mismatch in reference from the 
function dw_apb_clocksource_register() to the function 
.init.text:__ipipe_tsc_register()
The function dw_apb_clocksource_register() references
the function __init __ipipe_tsc_register().
This is often because dw_apb_clocksource_register lacks a __init 
annotation or the annotation of __ipipe_tsc_register is wrong.

Jan

-- 
Siemens AG, Technology
Competence Center Embedded Linux

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