This is not a kernel problem. The problem is that the pigpio library is
trying to mmap the GPIOs with PROT_EXEC which is a security risk. In
Focal /dev is mounted with the noexec flag so that's no longer possible.
They could patch the pigpio library to remove the PROT_EXEC flag from
the mmap call but I don't know if the library relies on that in other
places (it really shouldn't). There's probably a library in Ubuntu to
access GPIOs which is really what they should use so they get support if
something doesn't work. Closing as invalid as this is not a bug.
** Changed in: linux-raspi (Ubuntu Focal)
Status: Confirmed => Invalid
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https://bugs.launchpad.net/bugs/1889926
Title:
Can't access gpio mapped memory on focal armhf server on pi
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