Hi Jiri, On Mon, Jan 23, 2023, at 1:06 AM, Jiri Olsa wrote: > On Sun, Jan 22, 2023 at 10:48:44AM -0700, Daniel Xu wrote: >> Hi, >> >> I'm getting the following error during build: >> >> $ ./tools/testing/selftests/bpf/vmtest.sh -j30 >> [...] >> BTF .btf.vmlinux.bin.o >> btf_encoder__encode: btf__dedup failed! >> Failed to encode BTF >> LD .tmp_vmlinux.kallsyms1 >> NM .tmp_vmlinux.kallsyms1.syms >> KSYMS .tmp_vmlinux.kallsyms1.S >> AS .tmp_vmlinux.kallsyms1.S >> LD .tmp_vmlinux.kallsyms2 >> NM .tmp_vmlinux.kallsyms2.syms >> KSYMS .tmp_vmlinux.kallsyms2.S >> AS .tmp_vmlinux.kallsyms2.S >> LD .tmp_vmlinux.kallsyms3 >> NM .tmp_vmlinux.kallsyms3.syms >> KSYMS .tmp_vmlinux.kallsyms3.S >> AS .tmp_vmlinux.kallsyms3.S >> LD vmlinux >> BTFIDS vmlinux >> FAILED: load BTF from vmlinux: No such file or directory >> make[1]: *** [scripts/Makefile.vmlinux:35: vmlinux] Error 255 >> make[1]: *** Deleting file 'vmlinux' >> make: *** [Makefile:1264: vmlinux] Error 2 >> >> This happens on both bpf-next/master (84150795a49) and 6.2-rc5 >> (2241ab53cb). >> >> I've also tried arch linux pahole 1:1.24+r29+g02d67c5-1 as well as >> upstream pahole on master (02d67c5176) and upstream pahole on >> next (2ca56f4c6f659). >> >> Of the above 6 combinations, I think I've tried all of them (maybe >> missing 1 or 2). >> >> Looks like GCC got updated recently on my machine, so perhaps >> it's related? >> >> CONFIG_CC_VERSION_TEXT="gcc (GCC) 12.2.1 20230111" >> >> I'll try some debugging, but just wanted to report it first. > > hi, > I can't reproduce that.. can you reproduce it outside vmtest.sh? > > there will be lot of output with patch below, but could contain > some more error output Thanks for the hints. Doing a regular build outside of vmtest.sh seems to work ok. So maybe it's a difference in the build config. I'll put a little more time into debugging to see if it goes anywhere. But I'll have to get back to the regularly scheduled programming soon. [...] Thanks, Daniel
