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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-06 01:02:38 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-06 01:02:38 +0000
commit08b74a000942a380fe028845f92cd3a0dee827d5 (patch)
treeaa78b4e12607c3e1fcce8d5cc42df4330792f118 /debian/patches/bugfix/all/tools-build-remove-bpf-run-time-check-at-build-time.patch
parentAdding upstream version 4.19.249. (diff)
downloadlinux-08b74a000942a380fe028845f92cd3a0dee827d5.tar.xz
linux-08b74a000942a380fe028845f92cd3a0dee827d5.zip
Adding debian version 4.19.249-2.debian/4.19.249-2debian
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'debian/patches/bugfix/all/tools-build-remove-bpf-run-time-check-at-build-time.patch')
-rw-r--r--debian/patches/bugfix/all/tools-build-remove-bpf-run-time-check-at-build-time.patch29
1 files changed, 29 insertions, 0 deletions
diff --git a/debian/patches/bugfix/all/tools-build-remove-bpf-run-time-check-at-build-time.patch b/debian/patches/bugfix/all/tools-build-remove-bpf-run-time-check-at-build-time.patch
new file mode 100644
index 000000000..39044c390
--- /dev/null
+++ b/debian/patches/bugfix/all/tools-build-remove-bpf-run-time-check-at-build-time.patch
@@ -0,0 +1,29 @@
+From: Ben Hutchings <ben@decadent.org.uk>
+Date: Sun, 21 Feb 2016 15:33:15 +0000
+Subject: tools/build: Remove bpf() run-time check at build time
+Forwarded: no
+
+It is not correct to test that a syscall works on the build system's
+kernel. We might be building on an earlier kernel version or with
+security restrictions that block bpf().
+
+Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
+---
+Index: linux/tools/build/feature/test-bpf.c
+===================================================================
+--- linux.orig/tools/build/feature/test-bpf.c
++++ linux/tools/build/feature/test-bpf.c
+@@ -35,8 +35,10 @@ int main(void)
+ attr.prog_flags = 0;
+
+ /*
+- * Test existence of __NR_bpf and BPF_PROG_LOAD.
+- * This call should fail if we run the testcase.
++ * bwh: Don't use the bpf() syscall as we might be building on a
++ * much older kernel. Do "use" the attr structure here to avoid
++ * a "set but not used" warning.
+ */
+- return syscall(__NR_bpf, BPF_PROG_LOAD, &attr, sizeof(attr));
++ (void)&attr;
++ return 0;
+ }