patchelf and bloat due to "warning: working around a Linux kernel bug by creating a hole of ..."

[Jeffrey Walton]

I'm working on Ubuntu 18.04 x86_64 fully patched. I'm trying to use patchelf to fix runpaths in Perl built from sources. Perl is mishandling runpath options in LDFLAGS but refuses to fix it; see https://github.com/Perl/perl5/issues/17534.

When patchelf runs I see a lot of:

/home/jwalton/perl-5.32.0/fix-pkgconfig.exe
warning: working around a Linux kernel bug by creating a hole of 2072576 bytes in ‘/home/jwalton/perl-5.32.0/fix-pkgconfig.exe’
/home/jwalton/perl-5.32.0/generate_uudmap
warning: working around a Linux kernel bug by creating a hole of 2088960 bytes in ‘/home/jwalton/perl-5.32.0/generate_uudmap’
...

I believe patchelf needs this commit: https://github.com/NixOS/patchelf/commit/c4deb5e9.

Also see https://bugzilla.redhat.com/show_bug.cgi?id=1497012.