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Mon, 16 Mar 2026 17:13:29 -0000 X-Groupsio-URL: https://lists.yoctoproject.org/g/meta-ti/message/19719 A recent change in oe-core [1] to glibc 2.43 has introduced a build error with 6.12 kernels. Backport a patch [2] from linux-stable to address this. [1] https://git.openembedded.org/openembedded-core/commit/?id=f791d6c52870f3571e740ff7818d45bb0a717934 [2] https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-6.12.y&id=3dedeeecd1ae42a751721d83dc21877122cc1795 Signed-off-by: Ryan Eatmon --- ...-Fix-Wdiscarded-qualifiers-under-C23.patch | 60 +++++++++++++++++++ .../linux/linux-ti-staging_6.12.bb | 2 + 2 files changed, 62 insertions(+) create mode 100644 meta-ti-bsp/recipes-kernel/linux/files/0001-libbpf-Fix-Wdiscarded-qualifiers-under-C23.patch diff --git a/meta-ti-bsp/recipes-kernel/linux/files/0001-libbpf-Fix-Wdiscarded-qualifiers-under-C23.patch b/meta-ti-bsp/recipes-kernel/linux/files/0001-libbpf-Fix-Wdiscarded-qualifiers-under-C23.patch new file mode 100644 index 00000000..b7a81006 --- /dev/null +++ b/meta-ti-bsp/recipes-kernel/linux/files/0001-libbpf-Fix-Wdiscarded-qualifiers-under-C23.patch @@ -0,0 +1,60 @@ +From 3dedeeecd1ae42a751721d83dc21877122cc1795 Mon Sep 17 00:00:00 2001 +From: Mikhail Gavrilov +Date: Sat, 6 Dec 2025 14:28:25 +0500 +Subject: libbpf: Fix -Wdiscarded-qualifiers under C23 +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +commit d70f79fef65810faf64dbae1f3a1b5623cdb2345 upstream. + +glibc ≥ 2.42 (GCC 15) defaults to -std=gnu23, which promotes +-Wdiscarded-qualifiers to an error. + +In C23, strstr() and strchr() return "const char *". + +Change variable types to const char * where the pointers are never +modified (res, sym_sfx, next_path). + +Suggested-by: Florian Weimer +Suggested-by: Andrii Nakryiko +Signed-off-by: Mikhail Gavrilov +Link: https://lore.kernel.org/r/20251206092825.1471385-1-mikhail.v.gavrilov@gmail.com +Signed-off-by: Alexei Starovoitov +[ shung-hsi.yu: needed to fix kernel build failure due to libbpf since glibc + 2.43+ (which adds 'const' qualifier to strstr). 'sym_sfx' hunk dropped because + commit f8a05692de06 ("libbpf: Work around kernel inconsistently stripping + '.llvm.' suffix") is not present. ] +Signed-off-by: Shung-Hsi Yu +Signed-off-by: Greg Kroah-Hartman + +Upstream-Status: Backport +--- + tools/lib/bpf/libbpf.c | 4 ++-- + 1 file changed, 2 insertions(+), 2 deletions(-) + +diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c +index 060aecf60b76b1..7d496f0a9a30d1 100644 +--- a/tools/lib/bpf/libbpf.c ++++ b/tools/lib/bpf/libbpf.c +@@ -8174,7 +8174,7 @@ static int kallsyms_cb(unsigned long long sym_addr, char sym_type, + struct bpf_object *obj = ctx; + const struct btf_type *t; + struct extern_desc *ext; +- char *res; ++ const char *res; + + res = strstr(sym_name, ".llvm."); + if (sym_type == 'd' && res) +@@ -11959,7 +11959,7 @@ static int resolve_full_path(const char *file, char *result, size_t result_sz) + if (!search_paths[i]) + continue; + for (s = search_paths[i]; s != NULL; s = strchr(s, ':')) { +- char *next_path; ++ const char *next_path; + int seg_len; + + if (s[0] == ':') +-- +cgit 1.2.3-korg + diff --git a/meta-ti-bsp/recipes-kernel/linux/linux-ti-staging_6.12.bb b/meta-ti-bsp/recipes-kernel/linux/linux-ti-staging_6.12.bb index a02b90e7..c63d7532 100644 --- a/meta-ti-bsp/recipes-kernel/linux/linux-ti-staging_6.12.bb +++ b/meta-ti-bsp/recipes-kernel/linux/linux-ti-staging_6.12.bb @@ -24,6 +24,8 @@ BRANCH ?= "ti-linux-6.12.y" SRCREV ?= "da3c0f0a33ac00f7138c695a16d90301cf7ec02b" PV = "6.12.57+git" +SRC_URI += "file://0001-libbpf-Fix-Wdiscarded-qualifiers-under-C23.patch" + KERNEL_REPRODUCIBILITY_PATCHES = " \ file://0001-drivers-gpu-drm-msm-registers-improve-reproducibilit.patch \ "