Failure to build hid-fuzzer

I am experimenting with different fuzzing research using LKL so far so good. During one of these experiments I experienced a linker error related to KASAN/ASAN and wanted to retrace my steps and see what I did wrong. But I ended up with this new linker error.

These are the commands I executed on my Ubuntu 24.04.2 LTS x86 host:

git clone https://github.com/lkl/linux.git
cd linux
make -C tools/lkl LKL_FUZZING=1 -j12 fuzzers

The following linker error is an excerpt of the full compiler output, liblkl builds succesfully as far as I can tell.

  LD      /home/user/projects/lkl/linux/tools/lkl/lib/liblkl-in.o
  AR      /home/user/projects/lkl/linux/tools/lkl/liblkl.a
  LINK    /home/user/projects/lkl/linux/tools/lkl/fuzzers/hid/hid-fuzzer
ld.lld: error: relocation R_X86_64_64 cannot be used against symbol 'system_state'; recompile with -fPIC
>>> defined in /home/user/projects/lkl/linux/tools/lkl/liblkl.a(lkl.o)
>>> referenced by main.c:125 (/home/user/projects/lkl/linux/init/main.c:125)
>>>               lkl.o:(.export_symbol+0x8) in archive /home/user/projects/lkl/linux/tools/lkl/liblkl.a

ld.lld: error: relocation R_X86_64_64 cannot be used against symbol 'static_key_initialized'; recompile with -fPIC
>>> defined in /home/user/projects/lkl/linux/tools/lkl/liblkl.a(lkl.o)
>>> referenced by main.c:165 (/home/user/projects/lkl/linux/init/main.c:165)
>>>               lkl.o:(.export_symbol+0x18) in archive /home/user/projects/lkl/linux/tools/lkl/liblkl.a

ld.lld: error: relocation R_X86_64_64 cannot be used against symbol 'reset_devices'; recompile with -fPIC
>>> defined in /home/user/projects/lkl/linux/tools/lkl/liblkl.a(lkl.o)
>>> referenced by main.c:177 (/home/user/projects/lkl/linux/init/main.c:177)
>>>               lkl.o:(.export_symbol+0x28) in archive /home/user/projects/lkl/linux/tools/lkl/liblkl.a

ld.lld: error: relocation R_X86_64_64 cannot be used against symbol 'loops_per_jiffy'; recompile with -fPIC
>>> defined in /home/user/projects/lkl/linux/tools/lkl/liblkl.a(lkl.o)
>>> referenced by main.c:225 (/home/user/projects/lkl/linux/init/main.c:225)
>>>               lkl.o:(.export_symbol+0x38) in archive /home/user/projects/lkl/linux/tools/lkl/liblkl.a

ld.lld: error: relocation R_X86_64_64 cannot be used against symbol 'init_uts_ns'; recompile with -fPIC
>>> defined in /home/user/projects/lkl/linux/tools/lkl/liblkl.a(lkl.o)
>>> referenced by version-timestamp.c:10 (init/version-timestamp.c:10)
>>>               lkl.o:(.export_symbol+0x48) in archive /home/user/projects/lkl/linux/tools/lkl/liblkl.a

ld.lld: error: relocation R_X86_64_64 cannot be used against symbol 'init_task'; recompile with -fPIC
>>> defined in /home/user/projects/lkl/linux/tools/lkl/liblkl.a(lkl.o)
>>> referenced by init_task.c:64 (/home/user/projects/lkl/linux/init/init_task.c:64)
>>>               lkl.o:(.export_symbol+0x58) in archive /home/user/projects/lkl/linux/tools/lkl/liblkl.a

ld.lld: error: relocation R_X86_64_64 cannot be used against symbol 'memcpy'; recompile with -fPIC
>>> defined in /home/user/projects/lkl/linux/tools/lkl/liblkl.a(lkl.o)
>>> referenced by xarray.c
>>>               lkl.o:(.export_symbol+0x68) in archive /home/user/projects/lkl/linux/tools/lkl/liblkl.a

ld.lld: error: relocation R_X86_64_64 cannot be used against symbol 'memset'; recompile with -fPIC
>>> defined in /home/user/projects/lkl/linux/tools/lkl/liblkl.a(lkl.o)
>>> referenced by xarray.c
>>>               lkl.o:(.export_symbol+0x78) in archive /home/user/projects/lkl/linux/tools/lkl/liblkl.a

ld.lld: error: relocation R_X86_64_64 cannot be used against symbol 'memmove'; recompile with -fPIC
>>> defined in /home/user/projects/lkl/linux/tools/lkl/liblkl.a(lkl.o)
>>> referenced by xarray.c
>>>               lkl.o:(.export_symbol+0x88) in archive /home/user/projects/lkl/linux/tools/lkl/liblkl.a

ld.lld: error: relocation R_X86_64_64 cannot be used against symbol 'free_task'; recompile with -fPIC
>>> defined in /home/user/projects/lkl/linux/tools/lkl/liblkl.a(lkl.o)
>>> referenced by xarray.c
>>>               lkl.o:(.export_symbol+0x98) in archive /home/user/projects/lkl/linux/tools/lkl/liblkl.a

ld.lld: error: relocation R_X86_64_64 cannot be used against symbol '__mmdrop'; recompile with -fPIC
>>> defined in /home/user/projects/lkl/linux/tools/lkl/liblkl.a(lkl.o)
>>> referenced by xarray.c
>>>               lkl.o:(.export_symbol+0xA8) in archive /home/user/projects/lkl/linux/tools/lkl/liblkl.a

ld.lld: error: relocation R_X86_64_64 cannot be used against symbol '__put_task_struct'; recompile with -fPIC
>>> defined in /home/user/projects/lkl/linux/tools/lkl/liblkl.a(lkl.o)
>>> referenced by xarray.c
>>>               lkl.o:(.export_symbol+0xB8) in archive /home/user/projects/lkl/linux/tools/lkl/liblkl.a

ld.lld: error: relocation R_X86_64_64 cannot be used against symbol '__put_task_struct_rcu_cb'; recompile with -fPIC
>>> defined in /home/user/projects/lkl/linux/tools/lkl/liblkl.a(lkl.o)
>>> referenced by xarray.c
>>>               lkl.o:(.export_symbol+0xC8) in archive /home/user/projects/lkl/linux/tools/lkl/liblkl.a

ld.lld: error: relocation R_X86_64_64 cannot be used against symbol 'mmput'; recompile with -fPIC
>>> defined in /home/user/projects/lkl/linux/tools/lkl/liblkl.a(lkl.o)
>>> referenced by xarray.c
>>>               lkl.o:(.export_symbol+0xD8) in archive /home/user/projects/lkl/linux/tools/lkl/liblkl.a

ld.lld: error: relocation R_X86_64_64 cannot be used against symbol 'get_task_mm'; recompile with -fPIC
>>> defined in /home/user/projects/lkl/linux/tools/lkl/liblkl.a(lkl.o)
>>> referenced by xarray.c
>>>               lkl.o:(.export_symbol+0xE8) in archive /home/user/projects/lkl/linux/tools/lkl/liblkl.a

ld.lld: error: relocation R_X86_64_64 cannot be used against symbol 'panic_timeout'; recompile with -fPIC
>>> defined in /home/user/projects/lkl/linux/tools/lkl/liblkl.a(lkl.o)
>>> referenced by panic.c:66 (/home/user/projects/lkl/linux/kernel/panic.c:66)
>>>               lkl.o:(.export_symbol+0xF8) in archive /home/user/projects/lkl/linux/tools/lkl/liblkl.a

ld.lld: error: relocation R_X86_64_64 cannot be used against symbol 'panic_notifier_list'; recompile with -fPIC
>>> defined in /home/user/projects/lkl/linux/tools/lkl/liblkl.a(lkl.o)
>>> referenced by panic.c:78 (/home/user/projects/lkl/linux/kernel/panic.c:78)
>>>               lkl.o:(.export_symbol+0x108) in archive /home/user/projects/lkl/linux/tools/lkl/liblkl.a

ld.lld: error: relocation R_X86_64_64 cannot be used against symbol 'panic_blink'; recompile with -fPIC
>>> defined in /home/user/projects/lkl/linux/tools/lkl/liblkl.a(lkl.o)
>>> referenced by panic.c:138 (/home/user/projects/lkl/linux/kernel/panic.c:138)
>>>               lkl.o:(.export_symbol+0x118) in archive /home/user/projects/lkl/linux/tools/lkl/liblkl.a

ld.lld: error: relocation R_X86_64_64 cannot be used against symbol 'nmi_panic'; recompile with -fPIC
>>> defined in /home/user/projects/lkl/linux/tools/lkl/liblkl.a(lkl.o)
>>> referenced by xarray.c
>>>               lkl.o:(.export_symbol+0x128) in archive /home/user/projects/lkl/linux/tools/lkl/liblkl.a

ld.lld: error: relocation R_X86_64_64 cannot be used against symbol 'panic'; recompile with -fPIC
>>> defined in /home/user/projects/lkl/linux/tools/lkl/liblkl.a(lkl.o)
>>> referenced by xarray.c
>>>               lkl.o:(.export_symbol+0x138) in archive /home/user/projects/lkl/linux/tools/lkl/liblkl.a

ld.lld: error: too many errors emitted, stopping now (use --error-limit=0 to see all errors)
clang: error: linker command failed with exit code 1 (use -v to see invocation)

I can not remember that I have seen this one before while experimenting. Does someone here know where this is coming from? I am curious if this is reproducible for anyone or maybe obvious for someone that either my setup is incorrect or that that there is something missing?

#584 has the same issue, again Ubuntu 24.04.

When I redo my steps for commit 74da3bd then I get a successful built, at least for liblkl on 24.04. This is the commit I have been working from since january.

It is failed during the linking process

make -C tools/lkl LKL_FUZZING=1 MMU=1 clean-conf fuzzers -j12

 LINK    /home/asd/Documents/fuzzing/LKL/linux/tools/lkl/fuzzers/hid/hid-fuzzer
/usr/bin/ld: /home/asd/Documents/fuzzing/LKL/linux/tools/lkl/liblkl.a(lkl.o): warning: relocation in read-only section `.export_symbol'
/usr/bin/ld: /home/asd/Documents/fuzzing/LKL/linux/tools/lkl/liblkl.a(lkl.o): in function `HIST_count_parallel_wksp':
/home/asd/Documents/fuzzing/LKL/linux/lib/zstd/compress/hist.c:130:(.text+0x63b42c): undefined reference to `__asan_memmove'
/usr/bin/ld: /home/asd/Documents/fuzzing/LKL/linux/tools/lkl/liblkl.a(lkl.o): in function `ZSTD_copyRawBlock':
/home/asd/Documents/fuzzing/LKL/linux/lib/zstd/decompress/zstd_decompress.c:801:(.text+0x6fa459): undefined reference to `__asan_memmove'
/usr/bin/ld: /home/asd/Documents/fuzzing/LKL/linux/lib/zstd/decompress/zstd_decompress.c:801:(.text+0x6fb715): undefined reference to `__asan_memmove'
/usr/bin/ld: /home/asd/Documents/fuzzing/LKL/linux/tools/lkl/liblkl.a(lkl.o): in function `ZSTD_execSequenceEndSplitLitBuffer':
/home/asd/Documents/fuzzing/LKL/linux/lib/zstd/decompress/zstd_decompress_block.c:942:(.text+0x6fee0d): undefined reference to `__asan_memmove'
/usr/bin/ld: /home/asd/Documents/fuzzing/LKL/linux/lib/zstd/decompress/zstd_decompress_block.c:937:(.text+0x6fee97): undefined reference to `__asan_memmove'
/usr/bin/ld: /home/asd/Documents/fuzzing/LKL/linux/tools/lkl/liblkl.a(lkl.o):/home/asd/Documents/fuzzing/LKL/linux/lib/zstd/decompress/zstd_decompress_block.c:894: more undefined references to `__asan_memmove' follow
/usr/bin/ld: warning: creating DT_TEXTREL in a PIE
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make: *** [Makefile:100: /home/asd/Documents/fuzzing/LKL/linux/tools/lkl/fuzzers/hid/hid-fuzzer] Error 1
make: Leaving directory '/home/asd/Documents/fuzzing/LKL/linux/tools/lkl'

lkl: discard .export_symbol section to fix fuzzer build

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Failure to build hid-fuzzer #595

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Failure to build hid-fuzzer #595

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scheperdion commented on Apr 24, 2025

scheperdion commented on Apr 24, 2025

Bariskizilkaya commented on Aug 16, 2025

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