diff options
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.patch | 27 |
1 files changed, 27 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..3818dbb17 --- /dev/null +++ b/debian/patches/bugfix/all/tools-build-remove-bpf-run-time-check-at-build-time.patch @@ -0,0 +1,27 @@ +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> +--- +--- a/tools/build/feature/test-bpf.c ++++ b/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; + } |