ci/diffs: add a fix for BPF samples build

See https://lore.kernel.org/bpf/[email protected]/

Signed-off-by: Ihor Solodrai <[email protected]>

ci/diffs/0499-samples-bpf-fix-samples-compilation.patch

@@ -0,0 +1,61 @@
+From 80a5958a52b86e39c1a1bf5f4702011c0cf6ab4f Mon Sep 17 00:00:00 2001
+From: Eduard Zingerman <[email protected]>
+Date: Mon, 2 Dec 2024 12:14:46 -0800
+Subject: [PATCH] samples/bpf: fix samples compilation
+
+Commit [0] breaks samples build.
+
+TODO: moar details here
+
+[0] 13b25489b6f8 ("kbuild: change working directory to external module directory with M=")
+
+Signed-off-by: Eduard Zingerman <[email protected]>
+Signed-off-by: Ihor Solodrai <[email protected]>
+---
+ samples/bpf/Makefile | 13 +++++++------
+ 1 file changed, 7 insertions(+), 6 deletions(-)
+
+diff --git a/samples/bpf/Makefile b/samples/bpf/Makefile
+index bcf103a4c14f..ee10dbf1b471 100644
+--- a/samples/bpf/Makefile
++++ b/samples/bpf/Makefile
+@@ -146,13 +146,14 @@ ifeq ($(ARCH), x86)
+ BPF_EXTRA_CFLAGS += -fcf-protection
+ endif
+
+-TPROGS_CFLAGS += -Wall -O2
+-TPROGS_CFLAGS += -Wmissing-prototypes
+-TPROGS_CFLAGS += -Wstrict-prototypes
+-TPROGS_CFLAGS += $(call try-run,\
++COMMON_CFLAGS += -Wall -O2
++COMMON_CFLAGS += -Wmissing-prototypes
++COMMON_CFLAGS += -Wstrict-prototypes
++COMMON_CFLAGS += $(call try-run,\
+ 	printf "int main() { return 0; }" |\
+ 	$(CC) -Werror -fsanitize=bounds -x c - -o "$$TMP",-fsanitize=bounds,)
+
++TPROGS_CFLAGS += $(COMMON_CFLAGS)
+ TPROGS_CFLAGS += -I$(objtree)/usr/include
+ TPROGS_CFLAGS += -I$(srctree)/tools/testing/selftests/bpf/
+ TPROGS_CFLAGS += -I$(LIBBPF_INCLUDE)
+@@ -229,7 +230,7 @@ clean:
+
+ $(LIBBPF): $(wildcard $(LIBBPF_SRC)/*.[ch] $(LIBBPF_SRC)/Makefile) | $(LIBBPF_OUTPUT)
+ # Fix up variables inherited from Kbuild that tools/ build system won't like
+-	$(MAKE) -C $(LIBBPF_SRC) RM='rm -rf' EXTRA_CFLAGS="$(TPROGS_CFLAGS)" \
++	$(MAKE) -C $(LIBBPF_SRC) RM='rm -rf' EXTRA_CFLAGS="$(COMMON_CFLAGS)" \
+ 		LDFLAGS="$(TPROGS_LDFLAGS)" srctree=$(BPF_SAMPLES_PATH)/../../ \
+ 		O= OUTPUT=$(LIBBPF_OUTPUT)/ DESTDIR=$(LIBBPF_DESTDIR) prefix= \
+ 		$@ install_headers
+@@ -305,7 +306,7 @@ $(obj)/$(TRACE_HELPERS): TPROGS_CFLAGS := $(TPROGS_CFLAGS) -D__must_check=
+ -include $(BPF_SAMPLES_PATH)/Makefile.target
+
+ VMLINUX_BTF_PATHS ?= $(abspath $(if $(O),$(O)/vmlinux))				\
+-		     $(abspath $(if $(KBUILD_OUTPUT),$(KBUILD_OUTPUT)/vmlinux))	\
++		     $(abspath $(if $(objtree),$(objtree)/vmlinux))		\
+ 		     $(abspath ./vmlinux)
+ VMLINUX_BTF ?= $(abspath $(firstword $(wildcard $(VMLINUX_BTF_PATHS))))
+
+-- 
+2.47.0
+