Subject: ppc compat v4.16 regression: sending SIGTRAP or SIGFPE via kill() returns wrong values in si_pid and si_uid

From: "Dmitry V. Levin" <[email-masked]>
Date: Mon, 9 Apr 2018 18:22:53 +0300

Hi,

There seems to be a regression in v4.16 on ppc compat very similar
to sparc compat regression reported earlier at
https://marc.info/?l=linux-sparc&m=151501500704383 .

The symptoms are exactly the same: the same signal_receive test from
the strace test suite fails with the same diagnostics:
https://build.opensuse.org/public/build/home:ldv_alt/openSUSE_Factory_PowerPC/ppc/strace/_log

Unfortunately, I do not have any means to investigate further,
so just passing this information on to those who care.

-- 
ldv