bug#63178: shepherd 0.10.0-rc1 riscv64 build failure

[Efraim Flashner <efraim@flashner.co.il>]

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On Sat, May 06, 2023 at 07:59:39PM +0200, Ludovic Courtès wrote:
> Hi!
> 
> Efraim Flashner <efraim@flashner.co.il> skribis:
> 
> > On Wed, May 03, 2023 at 09:29:49PM +0200, Ludovic Courtès wrote:
> >> Hey Efraim,
> >> 
> >> Efraim Flashner <efraim@flashner.co.il> skribis:
> >> 
> >> > I reran it and got a different test failure
> >> 
> >> > FAIL: tests/starting-status.sh
> >> 
> >> Could you retry from the ‘master’ branch?  I pushed a couple of commits
> >> since your message that probably fixed this one.
> >> 
> >> Thanks a lot for testing!
> >
> > I ran the build on aarch64 and on riscv64 from commit
> > d6e4f59705f8526bea320a19e00d0aca552c1270. aarch64 for armhf succeeded (2
> > cores on a pine64). aarch64 failed (6 cores on a pinebook pro) and
> > riscv64 failed (2 cores on a starfive1). Second time through aarch64
> > succeeded on the same machine (which was definitely not doing anything
> > else at the time) and the riscv64 build succeeded on a 4 core starfive2.
> 
> I believe 7c79df11c7a9d938ed9b48e00c4366da95301d4b fixes a race
> condition that these tests were showing: ‘herd stop root’ can return
> before the shepherd process has terminated.
> 
> Could you try again?
> 
> For AArch64, what machine are you using, with what CPU?  There’s a
> Guile (?) bug manifesting on the OverDrive 1000 that causes more or
> less random test failures, unless you set GUILE_JIT_THRESHOLD=-1:
> 
>   https://github.com/wingo/fibers/issues/83
> 
> Thanks for your help!

The pine64¹ is an allwinner A64 with 4 A53 cores and the pinebook pro²
uses an RK3399, 4 cores of A53 and 2 cores of A72. I've also picked up 2
rock64³s using an RK3328 with 4 A53 cores.

¹ https://wiki.pine64.org/wiki/PINE_A64
² https://wiki.pine64.org/wiki/Pinebook_Pro
³ https://wiki.pine64.org/wiki/ROCK64

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Efraim Flashner   <efraim@flashner.co.il>   אפרים פלשנר
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