https://sourceware.org/bugzilla/show_bug.cgi?id=33141
Bug ID: 33141
Summary: unresolved relocations in -static-pie binaries on
s390x (and probably others)
Product: binutils
Version: 2.44
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: ld
Assignee: unassigned at sourceware dot org
Reporter: sertonix at posteo dot net
Target Milestone: ---
When linking binaries with -static-pie for s390x some of the binaries segfault
when executed. This seems to be caused by some relocations which haven't been
resolved by the linker. This command returned some results even though it
shouldn't: readelf -a ./a.out | grep R_390_64
This is essentially the same issue as
https://sourceware.org/bugzilla/show_bug.cgi?id=25527 but for s390x.
This has been previously patched for arm and riscv (
https://sourceware.org/git/?p=binutils-gdb.git;a=patch;h=1dcb9720d62cd053a72c31881b7724ce9f74332c
and
https://sourceware.org/git/?p=binutils-gdb.git;a=patch;h=39c7793ba8bef5aab358511b22764081959cb2ff
).
Applying the same logic change as in the arm and riscv patch in elf64-s390.c
results in a usable binary. I checked other arches and there seem to be a lot
more that might be affected by the same issue (elf32-arc.c, elf32-cris.c,
elf32-csky.c, elf32-hppa.c, elf32-m68k.c, elf32-s390.c, elf32-tic6x.c,
elf32-tilepro.c, elfxx-sparc.c).
Maybe it would be better to, instead of fixing this for each arch individually,
find a fix that works for all arches (or at least patch the issue on all arches
at once). For example SYMBOLIC_BIND seems to be used by most (all?) arches and
could may be changed to fix this.
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