Re: [PATCH linux-next v3 00/14] Split crash out from kexec and clean up related config items

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On 01/25/24 at 09:55pm, Nathan Chancellor wrote:
...... 
> I am seeing a few build failures in my test matrix on next-20240125 that
> appear to be caused by this series although I have not bisected. Some
> reproduction steps:

Thanks for trying this, I have reproduced the linking failure on arm,
will work out a way to fix it.

It's weird, I remember I have built these and passed.

> 
> $ curl -LSso .config https://git.alpinelinux.org/aports/plain/community/linux-edge/config-edge.armv7
> $ make -skj"$(nproc)" ARCH=arm CROSS_COMPILE=arm-linux-gnueabi- olddefconfig all
> ...
> arm-linux-gnueabi-ld: arch/arm/kernel/machine_kexec.o: in function `arch_crash_save_vmcoreinfo':
> machine_kexec.c:(.text+0x488): undefined reference to `vmcoreinfo_append_str'
> ...
> 
> $ curl -LSso .config https://github.com/archlinuxarm/PKGBUILDs/raw/master/core/linux-aarch64/config
> $ make -skj"$(nproc)" ARCH=arm64 CROSS_COMPILE=aarch64-linux- olddefconfig all
> ...
> aarch64-linux-ld: kernel/kexec_file.o: in function `kexec_walk_memblock.constprop.0':
> kexec_file.c:(.text+0x314): undefined reference to `crashk_res'
> aarch64-linux-ld: kernel/kexec_file.o: relocation R_AARCH64_ADR_PREL_PG_HI21 against symbol `crashk_res' which may bind externally can not be used when making a shared object; recompile with -fPIC
> kexec_file.c:(.text+0x314): dangerous relocation: unsupported relocation
> aarch64-linux-ld: kexec_file.c:(.text+0x318): undefined reference to `crashk_res'
> aarch64-linux-ld: drivers/of/kexec.o: in function `of_kexec_alloc_and_setup_fdt':
> kexec.c:(.text+0x580): undefined reference to `crashk_res'
> aarch64-linux-ld: drivers/of/kexec.o: relocation R_AARCH64_ADR_PREL_PG_HI21 against symbol `crashk_res' which may bind externally can not be used when making a shared object; recompile with -fPIC
> kexec.c:(.text+0x580): dangerous relocation: unsupported relocation
> aarch64-linux-ld: kexec.c:(.text+0x584): undefined reference to `crashk_res'
> aarch64-linux-ld: kexec.c:(.text+0x590): undefined reference to `crashk_res'
> aarch64-linux-ld: kexec.c:(.text+0x5b0): undefined reference to `crashk_low_res'
> aarch64-linux-ld: drivers/of/kexec.o: relocation R_AARCH64_ADR_PREL_PG_HI21 against symbol `crashk_low_res' which may bind externally can not be used when making a shared object; recompile with -fPIC
> kexec.c:(.text+0x5b0): dangerous relocation: unsupported relocation
> aarch64-linux-ld: kexec.c:(.text+0x5b4): undefined reference to `crashk_low_res'
> aarch64-linux-ld: kexec.c:(.text+0x5c0): undefined reference to `crashk_low_res'
> ...
> 
> $ curl -LSso .config https://git.alpinelinux.org/aports/plain/community/linux-edge/config-edge.x86_64
> $ make -skj"$(nproc)" ARCH=x86_64 CROSS_COMPILE=x86_64-linux- olddefconfig all
> ...
> x86_64-linux-ld: arch/x86/xen/mmu_pv.o: in function `paddr_vmcoreinfo_note':
> mmu_pv.c:(.text+0x3af3): undefined reference to `vmcoreinfo_note'
> ...
> 
> Cheers,
> Nathan
> 


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