On Fri, Feb 02, 2024 at 05:55:58PM +0800, Shung-Hsi Yu wrote:
> After commit c698eaebdf47 ("selftests/bpf: trace_helpers.c: Optimize
> kallsyms cache") trace_helpers.c now includes libbpf_internal.h, and
> thus can no longer use the u32 type (among others) since they are poison
> in libbpf_internal.h. Replace u32 with __u32 to fix the following error
> when building trace_helpers.c on powerpc:
>
> error: attempt to use poisoned "u32"
>
> Fixes: c698eaebdf47 ("selftests/bpf: trace_helpers.c: Optimize kallsyms cache")
> Signed-off-by: Shung-Hsi Yu <shung-hsi.yu@xxxxxxxx>
> ---
> Somehow this error only shows up when I'm building on ppc64le, but not
> x86_64 and aarch64. But I didn't investigate further.
it's within powerpc ifdef:
#if defined(__powerpc64__) && defined(_CALL_ELF) && _CALL_ELF == 2
Acked-by: Jiri Olsa <jolsa@xxxxxxxxxx>
jirka
> ---
> tools/testing/selftests/bpf/trace_helpers.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/tools/testing/selftests/bpf/trace_helpers.c b/tools/testing/selftests/bpf/trace_helpers.c
> index 4faa898ff7fc..27fd7ed3e4b0 100644
> --- a/tools/testing/selftests/bpf/trace_helpers.c
> +++ b/tools/testing/selftests/bpf/trace_helpers.c
> @@ -271,7 +271,7 @@ ssize_t get_uprobe_offset(const void *addr)
> * addi r2,r2,XXXX
> */
> {
> - const u32 *insn = (const u32 *)(uintptr_t)addr;
> + const __u32 *insn = (const __u32 *)(uintptr_t)addr;
>
> if ((((*insn & OP_RT_RA_MASK) == ADDIS_R2_R12) ||
> ((*insn & OP_RT_RA_MASK) == LIS_R2)) &&
>
> base-commit: 943b043aeecce9accb6d367af47791c633e95e4d
> --
> 2.43.0
>
