From: "Dmitry V. Levin" <l...@altlinux.org> Date: Fri, 13 Apr 2018 17:19:02 +0300
> Starting with commit v4.14-rc1~60^2^2~1, a SIGFPE signal sent via kill > results to wrong values in si_pid and si_uid fields of compat siginfo_t. > > This happens due to FPE_FIXME being defined to 0 for sparc, and at the > same time siginfo_layout() introduced by the same commit returns > SIL_FAULT for SIGFPE if si_code == SI_USER and FPE_FIXME is defined to 0. > > Fix this regression by removing FPE_FIXME macro and changing all its users > to assign FPE_FLTUNK to si_code instead of FPE_FIXME. > > Note that FPE_FLTUNK is a new macro introduced by commit > 266da65e9156d93e1126e185259a4aae68188d0e. > > Tested with commit v4.16-11958-g16e205cf42da. > > This bug was found by strace test suite. > > Link: https://github.com/strace/strace/issues/21 > Fixes: cc731525f26a ("signal: Remove kernel interal si_code magic") > Thanks-to: Anatoly Pugachev <mator...@gmail.com> > Signed-off-by: Dmitry V. Levin <l...@altlinux.org> Applied and queued up for -stable, thank you.
