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libbpf: Search /lib64 and /lib in resolve_full_path()

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attach_probe/uprobe-lib and uprobe_autoattach selftests fail with "failed
to resolve full path for libc.so.6" on older non-usrmerged distros, where
libc.so.6 lives under a top-level /lib64 or /lib rather than /usr/lib64 or
/usr/lib. Add /lib64:/lib to the search paths, alongside the existing
/usr/lib64:/usr/lib and Debian multiarch entries.

Fixes: 1ce3a60e3c ("libbpf: auto-resolve programs/libraries when necessary for uprobes")
Signed-off-by: Ricardo B. Marlière <rbm@suse.com>
Acked-by: Ihor Solodrai <ihor.solodrai@linux.dev>
Link: https://lore.kernel.org/bpf/20260720-selftests-bpf_fixes-v2-3-b450eda93dfe@suse.com
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
This commit is contained in:
Ricardo B. Marlière
2026-07-21 19:27:13 +02:00
committed by Kumar Kartikeya Dwivedi
parent 71cf3f3275
commit 7b5ae0481e
1 changed files with 2 additions and 1 deletions
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tools/lib/bpf/libbpf.c
+2 -1
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@@ -12969,13 +12969,14 @@ static const char *arch_specific_lib_paths(void)
/* Get full path to program/shared library. */
static int resolve_full_path(const char *file, char *result, size_t result_sz)
{
const char *search_paths[3] = {};
const char *search_paths[4] = {};
int i, perm;
if (str_has_sfx(file, ".so") || strstr(file, ".so.")) {
search_paths[0] = getenv("LD_LIBRARY_PATH");
search_paths[1] = "/usr/lib64:/usr/lib";
search_paths[2] = arch_specific_lib_paths();
search_paths[3] = "/lib64:/lib";
perm = R_OK;
} else {
search_paths[0] = getenv("PATH");