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Message-ID: <20240405064811.GC3766212@port70.net>
Date: Fri, 5 Apr 2024 08:48:11 +0200
From: Szabolcs Nagy <nsz@...t70.net>
To: Thorsten Glaser <tg@...bsd.de>
Cc: musl@...ts.openwall.com, 1068350@...s.debian.org,
debian-glibc@...ts.debian.org, doko@...ian.org
Subject: Re: Re: Bug#1068350: musl: miscompiles (runtime problems) on riscv64 and s390x with static-pie → seems to be a toolchain bug
after all, it does too hit glibc
* Thorsten Glaser <tg@...bsd.de> [2024-04-05 05:04:37 +0000]:
> Markus Wichmann dixit:
>
> >can check with readelf -r what the relocation types are. If they are not
> >relative, they will not be processed.
>
> Gotcha! They are all R_390_RELATIVE except for:
>
> 000000045ff0 001100000016 R_390_64 0000000000042c58 u_ops + 70
> 000000045ff8 001100000016 R_390_64 0000000000042c58 u_ops + 0
> 000000047020 001100000016 R_390_64 0000000000042c58 u_ops + 80
> 000000047088 001100000016 R_390_64 0000000000042c58 u_ops + 80
> 0000000470a8 001100000016 R_390_64 0000000000042c58 u_ops + b8
> 000000047220 001100000016 R_390_64 0000000000042c58 u_ops + 80
> 000000046900 002600000016 R_390_64 0000000000015af8 c_command + 0
> 000000046940 000700000016 R_390_64 0000000000017238 c_exec + 0
> 000000046ab0 002000000016 R_390_64 0000000000016a80 c_trap + 0
> 000000047090 002500000016 R_390_64 00000000000430ac initvsn + 0
> 000000047278 005500000016 R_390_64 0000000000047438 null_string + 2
>
> That’s our missing strings.
this is not correct static pie.
glibc handles symbolic relocs, but there should not be
any non-local symbol in a static exe. you may want to
check the symbol table.
so s390 does not support static pie.
(arguably the elf is correct, if you expect a full
dynlinker in a static pie, but even then it's bad
quality linker output)
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