diff options
| author | Alyssa Ross <hi@alyssa.is> | 2023-12-19 12:03:24 +0100 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2023-12-21 10:05:15 +0100 |
| commit | 812d8bf87678f77055b575d20636fdbbbf15edaf (patch) | |
| tree | a5f0ff77c9bc6860c18f6a746118d98655ca4661 /tools/lib | |
| parent | 92999245102a09ab2645424a9c9a0a5b16fda833 (diff) | |
libbpf: Skip DWARF sections in linker sanity check
clang can generate (with -g -Wa,--compress-debug-sections) 4-byte
aligned DWARF sections that declare themselves to be 8-byte aligned in
the section header. Since DWARF sections are dropped during linking
anyway, just skip running the sanity checks on them.
Reported-by: Sergei Trofimovich <slyich@gmail.com>
Suggested-by: Andrii Nakryiko <andrii.nakryiko@gmail.com>
Signed-off-by: Alyssa Ross <hi@alyssa.is>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Closes: https://lore.kernel.org/bpf/ZXcFRJVKbKxtEL5t@nz.home/
Link: https://lore.kernel.org/bpf/20231219110324.8989-1-hi@alyssa.is
Diffstat (limited to 'tools/lib')
| -rw-r--r-- | tools/lib/bpf/linker.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/tools/lib/bpf/linker.c b/tools/lib/bpf/linker.c index 52a2901e8bd0..16bca56002ab 100644 --- a/tools/lib/bpf/linker.c +++ b/tools/lib/bpf/linker.c @@ -719,6 +719,9 @@ static int linker_sanity_check_elf(struct src_obj *obj) return -EINVAL; } + if (is_dwarf_sec_name(sec->sec_name)) + continue; + if (sec->shdr->sh_addralign && !is_pow_of_2(sec->shdr->sh_addralign)) { pr_warn("ELF section #%zu alignment %llu is non pow-of-2 alignment in %s\n", sec->sec_idx, (long long unsigned)sec->shdr->sh_addralign, |