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ld.lld: error: relocation R_390_64 cannot be used against local symbol; recompile with -fPIC #1993

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nathanchance opened this issue Feb 14, 2024 · 1 comment
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ld.lld: error: relocation R_390_64 cannot be used against local symbol; recompile with -fPIC #1993

nathanchance opened this issue Feb 14, 2024 · 1 comment
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[ARCH] s390 This bug impacts ARCH=s390 [BUG] linux A bug that should be fixed in the mainline kernel. [FIXED][LINUX] 6.9 This bug was fixed in Linux 6.9 [TOOL] lld The issue is relevant to LLD linker

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When attempting to build ARCH=s390 defconfig with ld.lld (available after llvm/llvm-project@fe3406e) after applying the patches for #1991 and #1992, there are a series of errors due to the presence of R_390_64 relocations.

$ make -skj"$(nproc)" ARCH=s390 LLVM=1 OBJCOPY=s390x-linux-gnu-objcopy OBJDUMP=s390x-linux-gnu-objdump mrproper defconfig all
ld.lld: error: relocation R_390_64 cannot be used against local symbol; recompile with -fPIC
>>> defined in vmlinux.a(init/do_mounts_initrd.o)
>>> referenced by do_mounts_initrd.c
>>>               init/do_mounts_initrd.o:(__mcount_loc+0x0) in archive vmlinux.a

ld.lld: error: relocation R_390_64 cannot be used against local symbol; recompile with -fPIC
>>> defined in vmlinux.a(init/do_mounts_initrd.o)
>>> referenced by do_mounts_initrd.c
>>>               init/do_mounts_initrd.o:(__mcount_loc+0x8) in archive vmlinux.a

ld.lld: error: relocation R_390_64 cannot be used against local symbol; recompile with -fPIC
>>> defined in vmlinux.a(init/do_mounts_initrd.o)
>>> referenced by do_mounts_initrd.c
>>>               init/do_mounts_initrd.o:(__mcount_loc+0x10) in archive vmlinux.a

ld.lld: error: relocation R_390_64 cannot be used against local symbol; recompile with -fPIC
>>> defined in vmlinux.a(init/do_mounts_initrd.o)
>>> referenced by do_mounts_initrd.c
>>>               init/do_mounts_initrd.o:(__mcount_loc+0x18) in archive vmlinux.a
...

Patch submitted and accepted: https://git.kernel.org/s390/c/55cce52f1cec914870a12e8e9f82659037648cb8
@nathanchance nathanchance added [BUG] linux A bug that should be fixed in the mainline kernel. [TOOL] lld The issue is relevant to LLD linker [PATCH] Accepted A submitted patch has been accepted upstream [ARCH] s390 This bug impacts ARCH=s390 labels Feb 14, 2024
@nathanchance nathanchance mentioned this issue Feb 14, 2024
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@nathanchance nathanchance self-assigned this Feb 14, 2024
This was referenced Feb 14, 2024
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nathanchance added a commit to nathanchance/continuous-integration2 that referenced this issue Feb 21, 2024
@nathanchance
generator: yml: Use LLVM=1 for ARCH=s390 on linux-next with tip of tr…
c41724b 
…ee LLVM

With LLVM main, which has the necessary changes to ld.lld and
llvm-objcopy to support s390, and linux-next, which has the necessary
changes to the kernel to support these tools, ARCH=s390 builds cleanly
with LLVM=1. Cut builds that satisfy these conditions over to LLVM=1 so
that regressions with this working setup do not occur.

Link: llvm/llvm-project@fe3406e
Link: llvm/llvm-project@3c02cb7
Link: ClangBuiltLinux/linux#859
Link: ClangBuiltLinux/linux#1991
Link: ClangBuiltLinux/linux#1992
Link: ClangBuiltLinux/linux#1993
Link: ClangBuiltLinux/linux#1994
Link: ClangBuiltLinux/linux#1995
Link: ClangBuiltLinux/linux#1996
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
@nathanchance nathanchance mentioned this issue Feb 21, 2024
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Merged into mainline: https://git.kernel.org/linus/55cce52f1cec914870a12e8e9f82659037648cb8

@nathanchance nathanchance added [FIXED][LINUX] 6.9 This bug was fixed in Linux 6.9 and removed [PATCH] Accepted A submitted patch has been accepted upstream labels Mar 15, 2024
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[ARCH] s390 This bug impacts ARCH=s390 [BUG] linux A bug that should be fixed in the mainline kernel. [FIXED][LINUX] 6.9 This bug was fixed in Linux 6.9 [TOOL] lld The issue is relevant to LLD linker
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