Re: [libgpiod][PATCH] tools: tests: replace egrep with grep -E

[Bartosz Golaszewski <brgl@xxxxxxxx>]

On Fri, Jun 2, 2023 at 12:34 PM Kent Gibson <warthog618@xxxxxxxxx> wrote:
>
> On Fri, Jun 02, 2023 at 10:13:35AM +0800, Kent Gibson wrote:
> >
> > On a related(??) note, I'm occasionally seeing Oopses when testing this
> > - when creating a basic sim with a shell script, not when deleting it.
> > In one case after a fresh reboot and on creating the first sim, so it
> > looks to be purely the construction.  Yay :-(.
> >
>
> I had thought it would be difficult to reproduce this and so difficult
> to bisect.  Fortunately(??) not.  If I run my setup and cleanup scripts[1]
> in a tight loop it occurs very readily.  Haven't bisected it yet, but did
> test it on 6.1-rc1 and it Oopsed there too, so I would need to go back
> further.  What was the initial release containing gpio-sim?
>
> The sim setp is pretty simple - a couple of banks each with a few lines
> and hogs.
>
> Could you confirm that you can repeat the problem?
> Otherwise I might start thinking there is something broken in my test
> environment.
>
> Btw, the loop script is:
>
> #!/bin/env bash
> for (( ; ; ))
> do
>         echo "create sim..."
>         ./basic_sim.sh
>         echo "destroy sim..."
>         ./clean_sims.sh
> done
>
> Cheers,
> Kent.
> [1] https://github.com/warthog618/gpiosim-rs
>

With this script I've been able to trigger an issue but it looks
different from yours: https://pastebin.com/cbsgT2ae

Bart