Re: WARN Kernel v6.9-evl-rebase - EVL: invalid out-of-band syscall <0x43564d41> - Firefox browser

[Philippe Gerum <rpm@xenomai.org>]

Philippe Gerum <rpm@xenomai.org> writes:

> Philippe Gerum <rpm@xenomai.org> writes:
>
>> "Nechita, Ionut" <ionut.nechita@intel.com> writes:
>>
>>> Hi Philippe,
>>>
>>> My .config kernel configuration:
>>>
>>
>> Ok, this is reproducible locally now, thanks. Will fix.
>
> Unfortunately, we have a conflict between some regular prctl(2) command
> codes and the Dovetail oob syscall marker (PR_SET_VMA at least). The
> proper fix is going to cause an ABI breakage when it comes to oob
> syscall encoding when the prctl() (sys)call form is used to issue
> requests to the real-time core.

Fixed upstream, branches v6.1.y-rebase, v6.6.y-rebase and
v6.10-rebase. You will need to switch to libevl r49 as well.

This ABI update only affects real-time cores already relying on the
prctl(2) syscall form for issuing out-of-band requests, like
Xenomai4/evl. The Xenomai3/cobalt core which still relies on the legacy
out-of-band syscall range is not impacted by this change.

-- 
Philippe.