1 files changed, 43 insertions, 0 deletions

diff --git a/meta-oe/recipes-kernel/libbpf/files/0001-libbpf-check-for-empty-BTF-data-section-in-btf_parse.patch b/meta-oe/recipes-kernel/libbpf/files/0001-libbpf-check-for-empty-BTF-data-section-in-btf_parse.patch
new file mode 100644
index 0000000000..873995b644
--- /dev/null
+++ b/meta-oe/recipes-kernel/libbpf/files/0001-libbpf-check-for-empty-BTF-data-section-in-btf_parse.patch
@@ -0,0 +1,43 @@
+From ff2eb6e134ebfc225b97b46182af3cc58ed481f6 Mon Sep 17 00:00:00 2001
+From: Changqing Li <changqing.li@windriver.com>
+Date: Thu, 10 Apr 2025 11:50:04 +0800
+Subject: [PATCH] libbpf: check for empty BTF data section in btf_parse_elf
+
+A valid ELF file may contain a SHT_NOBITS .BTF section. This case is
+not handled correctly in btf_parse_elf, which leads to a segfault.
+
+Add a null check for a buffer returned by elf_getdata() before
+proceeding with its processing.
+
+Bug report: https://github.com/libbpf/libbpf/issues/894
+
+Signed-off-by: Ihor Solodrai <ihor.solodrai@linux.dev>
+Acked-by: Mykyta Yatsenko <mykyta.yatsenko5@gmail.com>
+
+Upstream-Status: Backport [https://github.com/kernel-patches/bpf-rc/commit/b02b669fd9398d246c8c9ae901c0d8f5bb36a588]
+
+Signed-off-by: Changqing Li <changqing.li@windriver.com>
+---
+ btf.c | 6 ++++++
+ 1 file changed, 6 insertions(+)
+
+diff --git a/btf.c b/btf.c
+index e9673c0e..21d38dcf 100644
+--- a/btf.c
++++ b/btf.c
+@@ -1199,6 +1199,12 @@ static struct btf *btf_parse_elf(const char *path, struct btf *base_btf,
+                goto done;
+        }
+ 
++       if (!secs.btf_data->d_buf) {
++               pr_warn("BTF data is empty in %s\n", path);
++               err = -ENODATA;
++               goto done;
++       }
++
+        if (secs.btf_base_data) {
+                dist_base_btf = btf_new(secs.btf_base_data->d_buf, secs.btf_base_data->d_size,
+                                        NULL);
+-- 
+2.34.1
+