openssl: Fix reproducibility issue

Fix an issue introduced in the new openssl version where an assembler file
isn't generated in a reproducible way by seeding the perl random number
generator consistently. It has no crypto impact, it is just used to
avoid function name clashes.

(From OE-Core rev: 448df3e1c02fe224d62f59a236fdcd47ea7e695f)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

2 files changed, 23 insertions, 0 deletions

diff --git a/meta/recipes-connectivity/openssl/openssl/fix_random_labels.patch b/meta/recipes-connectivity/openssl/openssl/fix_random_labels.patch
new file mode 100644
index 0000000000..78dcd81685
--- /dev/null
+++ b/meta/recipes-connectivity/openssl/openssl/fix_random_labels.patch
@@ -0,0 +1,22 @@
+The perl script adds random suffixes to the local function names to ensure
+it doesn't clash with other parts of openssl. Set the random number seed
+to something predictable so the assembler files are generated consistently
+and our own reproducible builds tests pass.
+
+Upstream-Status: Pending
+Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
+
+Index: openssl-3.1.0/crypto/modes/asm/aes-gcm-avx512.pl
+===================================================================
+--- openssl-3.1.0.orig/crypto/modes/asm/aes-gcm-avx512.pl
++++ openssl-3.1.0/crypto/modes/asm/aes-gcm-avx512.pl
+@@ -191,6 +191,9 @@ my $CTX_OFFSET_HTable    = (16 * 6);
+ # ;;; Helper functions
+ # ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+ 
++# Ensure the local labels are reproduicble
++srand(10000);
++
+ # ; Generates "random" local labels
+ sub random_string() {
+   my @chars  = ('a' .. 'z', 'A' .. 'Z', '0' .. '9', '_');
diff --git a/meta/recipes-connectivity/openssl/openssl_3.1.0.bb b/meta/recipes-connectivity/openssl/openssl_3.1.0.bb
index 4ae376d18a..85286a0618 100644
--- a/meta/recipes-connectivity/openssl/openssl_3.1.0.bb
+++ b/meta/recipes-connectivity/openssl/openssl_3.1.0.bb
@@ -11,6 +11,7 @@ SRC_URI = "http://www.openssl.org/source/openssl-${PV}.tar.gz \
            file://run-ptest \
            file://0001-buildinfo-strip-sysroot-and-debug-prefix-map-from-co.patch \
            file://0001-Configure-do-not-tweak-mips-cflags.patch \
+           file://fix_random_labels.patch \
            "
 
 SRC_URI:append:class-nativesdk = " \