Broken 32-bit riscv debug build with ZSTD and FTRACE

[Alexandre Ghiti]

Hi Marco,

On 5/31/25 13:52, Marco Bonelli wrote:
>> Steps to reproduce:
>>
>>      export ARCH=riscv CROSS_COMPILE=riscv32-linux-
>>      make distclean
>>      make defconfig
>>      make 32-bit.config
>>      ./scripts/config \
>>          -e DEBUG_KERNEL \
>>          -e DEBUG_INFO \
>>          -e DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT \
>>          -d DEBUG_INFO_NONE \
>>          -d DEBUG_INFO_REDUCED
>>      make olddefconfig
>>      make -j vmlinux
> Sorry, forgot to add "-e FTRACE" to the steps above. Here it is:
>
> 	export ARCH=riscv CROSS_COMPILE=riscv32-linux-
> 	make distclean
> 	make defconfig
> 	make 32-bit.config
> 	./scripts/config \
> 		-e DEBUG_KERNEL \
> 		-e DEBUG_INFO \
> 		-e DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT \
> 		-d DEBUG_INFO_NONE \
> 		-d DEBUG_INFO_REDUCED \
> 		-e FTRACE
> 	make olddefconfig
> 	make -j vmlinux
>
> Everything else still applies.
>
> --
> Marco Bonelli
>
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> linux-riscv at lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-riscv


First, thanks for the report!

I unfortunately cannot reproduce this issue locally, I tried on both 
v6.15 and latest linus master, with gcc 13.1.0 and gcc 14.2.0 . I made 
sure that I have FTRACE, ZSTD_COMPRESS and DEBUG_INFO enabled.

Can you attach your full config?

Thanks,

Alex