...
LD vmlinux
BTFIDS vmlinux
FAILED elf_update(WRITE): no error
This elf_update(WRITE) error is new to me.
make: *** [Makefile:1176: vmlinux] Error 255
make: *** Deleting file 'vmlinux'
It is annoying that vmlinux is deleted in this case, because I usually give Jiri the output from
'resolve_btfids -v' on vmlinux.
$ ./tools/bpf/resolve_btfids/resolve_btfids -v vmlinux.failed
You can do:
$ git diff
diff --git a/scripts/link-vmlinux.sh b/scripts/link-vmlinux.sh
index 3b261b0f74f0..02dec10a7d75 100755
--- a/scripts/link-vmlinux.sh
+++ b/scripts/link-vmlinux.sh
@@ -302,7 +302,8 @@ cleanup()
rm -f .tmp_symversions.lds
rm -f .tmp_vmlinux*
rm -f System.map
- rm -f vmlinux
+ # rm -f vmlinux
+ mv vmlinux vmlinux.failed
rm -f vmlinux.o
}
...and un-setting CONFIG_DEBUG_INFO_BTF makes that disappear. Maybe someone
who is understands the BTFIDS build step can shed some light on that; I'm
not there yet. :)
I'm just a user/consume of output from the BTFIDS build step, I think Jiri Olsa own the tool
resolve_btfids, and ACME pahole. I've hit a number of issues in the past that Jiri and ACME help
resolve quickly.
The most efficient solution I've found was to upgrade pahole to a newer version.
What version of pahole does your build system have?
What is your GCC version?
Just a quick answer first on the versions: this is an up to date Arch Linux system:
gcc: 11.1.0
pahole: 1.21
I'll try to get the other step done later this evening.
thanks,
--
John Hubbard
NVIDIA
