On Fri, Jan 27, 2023 at 04:28:54PM -0600, Alexandre Peixoto Ferreira wrote: > > > On 1/24/23 00:13, Daniel Xu wrote: > > 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. > 6.2-rc5 compiles correctly when CONFIG_X86_KERNEL_IBT is commented but fails > in pahole when CONFIG_X86_KERNEL_IBT is set. could you plese attach your config and the build error? I can't reproduce that thanks, jirka
