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| author | Alexei Starovoitov <ast@kernel.org> | 2022-11-22 09:15:29 -0800 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2022-11-22 13:34:08 -0800 |
| commit | dc79f035b2062e4ff4f6432eda18f461f82b1333 (patch) | |
| tree | 4ab578497dc37992c6e531ab389ea507d37f4253 /tools/lib | |
| parent | 0b2971a2703c015b5737d66688c2c7c81a5e391b (diff) | |
| download | linux-dc79f035b2062e4ff4f6432eda18f461f82b1333.tar.bz2 | |
selftests/bpf: Workaround for llvm nop-4 bug
Currently LLVM fails to recognize .data.* as data section and defaults to .text
section. Later BPF backend tries to emit 4-byte NOP instruction which doesn't
exist in BPF ISA and aborts.
The fix for LLVM is pending:
https://reviews.llvm.org/D138477
While waiting for the fix lets workaround the linked_list test case
by using .bss.* prefix which is properly recognized by LLVM as BSS section.
Fix libbpf to support .bss. prefix and adjust tests.
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'tools/lib')
| -rw-r--r-- | tools/lib/bpf/libbpf.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c index b5df6aca06ea..93ccea238391 100644 --- a/tools/lib/bpf/libbpf.c +++ b/tools/lib/bpf/libbpf.c @@ -3511,7 +3511,8 @@ static int bpf_object__elf_collect(struct bpf_object *obj) sec_desc->sec_type = SEC_RELO; sec_desc->shdr = sh; sec_desc->data = data; - } else if (sh->sh_type == SHT_NOBITS && strcmp(name, BSS_SEC) == 0) { + } else if (sh->sh_type == SHT_NOBITS && (strcmp(name, BSS_SEC) == 0 || + str_has_pfx(name, BSS_SEC "."))) { sec_desc->sec_type = SEC_BSS; sec_desc->shdr = sh; sec_desc->data = data; |