diff -up openssl-1.1.1i/crypto/fips/fips.c.fips-post-rand openssl-1.1.1i/crypto/fips/fips.c

--- openssl-1.1.1i/crypto/fips/fips.c.fips-post-rand	2020-12-09 10:26:41.634106328 +0100

+++ openssl-1.1.1i/crypto/fips/fips.c	2020-12-09 10:26:41.652106475 +0100

@@ -68,6 +68,7 @@

 # include <openssl/fips.h>

 # include "internal/thread_once.h"

+# include "crypto/rand.h"

 # ifndef PATH_MAX

 #  define PATH_MAX 1024

@@ -76,6 +77,7 @@

 static int fips_selftest_fail = 0;

 static int fips_mode = 0;

 static int fips_started = 0;

+static int fips_post = 0;

 static int fips_is_owning_thread(void);

 static int fips_set_owning_thread(void);

@@ -158,6 +160,11 @@ void fips_set_selftest_fail(void)

     fips_selftest_fail = 1;

 }

+int fips_in_post(void)

+{

+    return fips_post;

+}

+

 /* we implement what libfipscheck does ourselves */

 static int

@@ -445,6 +452,8 @@ int FIPS_module_mode_set(int onoff)

         }

 # endif

+        fips_post = 1;

+

         if (!FIPS_selftest()) {

             fips_selftest_fail = 1;

             ret = 0;

@@ -459,7 +468,12 @@ int FIPS_module_mode_set(int onoff)

             goto end;

         }

+        fips_post = 0;

+

         fips_set_mode(onoff);

+        /* force RNG reseed with entropy from getrandom() on next call */

+        rand_force_reseed();

+

         ret = 1;

         goto end;

     }

diff -up openssl-1.1.1i/crypto/rand/drbg_lib.c.fips-post-rand openssl-1.1.1i/crypto/rand/drbg_lib.c

--- openssl-1.1.1i/crypto/rand/drbg_lib.c.fips-post-rand	2020-12-08 14:20:59.000000000 +0100

+++ openssl-1.1.1i/crypto/rand/drbg_lib.c	2020-12-09 10:26:41.652106475 +0100

@@ -1005,6 +1005,20 @@ size_t rand_drbg_seedlen(RAND_DRBG *drbg

     return min_entropy > min_entropylen ? min_entropy : min_entropylen;

 }

+void rand_force_reseed(void)

+{

+    RAND_DRBG *drbg;

+

+    drbg = RAND_DRBG_get0_master();

+    drbg->fork_id = 0;

+

+    drbg = RAND_DRBG_get0_private();

+    drbg->fork_id = 0;

+

+    drbg = RAND_DRBG_get0_public();

+    drbg->fork_id = 0;

+}

+

 /* Implements the default OpenSSL RAND_add() method */

 static int drbg_add(const void *buf, int num, double randomness)

 {

diff -up openssl-1.1.1i/crypto/rand/rand_unix.c.fips-post-rand openssl-1.1.1i/crypto/rand/rand_unix.c

--- openssl-1.1.1i/crypto/rand/rand_unix.c.fips-post-rand	2020-12-08 14:20:59.000000000 +0100

+++ openssl-1.1.1i/crypto/rand/rand_unix.c	2020-12-09 10:36:59.531221903 +0100

@@ -17,10 +17,12 @@

 #include <openssl/crypto.h>

 #include "rand_local.h"

 #include "crypto/rand.h"

+#include "crypto/fips.h"

 #include <stdio.h>

 #include "internal/dso.h"

 #ifdef __linux

 # include <sys/syscall.h>

+# include <sys/random.h>

 # ifdef DEVRANDOM_WAIT

 #  include <sys/shm.h>

 #  include <sys/utsname.h>

@@ -344,7 +346,7 @@ static ssize_t sysctl_random(char *buf,

  * syscall_random(): Try to get random data using a system call

  * returns the number of bytes returned in buf, or < 0 on error.

  */

-static ssize_t syscall_random(void *buf, size_t buflen)

+static ssize_t syscall_random(void *buf, size_t buflen, int nonblock)

 {

     /*

      * Note: 'buflen' equals the size of the buffer which is used by the

@@ -369,6 +371,7 @@ static ssize_t syscall_random(void *buf,

      * Note: Sometimes getentropy() can be provided but not implemented

      * internally. So we need to check errno for ENOSYS

      */

+#  if 0

 #  if defined(__GNUC__) && __GNUC__>=2 && defined(__ELF__) && !defined(__hpux)

     extern int getentropy(void *buffer, size_t length) __attribute__((weak));

@@ -394,10 +397,10 @@ static ssize_t syscall_random(void *buf,

     if (p_getentropy.p != NULL)

         return p_getentropy.f(buf, buflen) == 0 ? (ssize_t)buflen : -1;

 #  endif

-

+#  endif

     /* Linux supports this since version 3.17 */

-#  if defined(__linux) && defined(__NR_getrandom)

-    return syscall(__NR_getrandom, buf, buflen, 0);

+#  if defined(__linux) && defined(SYS_getrandom)

+    return syscall(SYS_getrandom, buf, buflen, nonblock?GRND_NONBLOCK:0);

 #  elif (defined(__FreeBSD__) || defined(__NetBSD__)) && defined(KERN_ARND)

     return sysctl_random(buf, buflen);

 #  else

@@ -633,6 +636,9 @@ size_t rand_pool_acquire_entropy(RAND_PO

     size_t entropy_available;

 #   if defined(OPENSSL_RAND_SEED_GETRANDOM)

+    int in_post;

+

+    for (in_post = fips_in_post(); in_post >= 0; --in_post) {

     {

         size_t bytes_needed;

         unsigned char *buffer;

@@ -643,7 +649,7 @@ size_t rand_pool_acquire_entropy(RAND_PO

         bytes_needed = rand_pool_bytes_needed(pool, 1 /*entropy_factor*/);

         while (bytes_needed != 0 && attempts-- > 0) {

             buffer = rand_pool_add_begin(pool, bytes_needed);

-            bytes = syscall_random(buffer, bytes_needed);

+            bytes = syscall_random(buffer, bytes_needed, in_post);

             if (bytes > 0) {

                 rand_pool_add_end(pool, bytes, 8 * bytes);

                 bytes_needed -= bytes;

@@ -678,8 +684,10 @@ size_t rand_pool_acquire_entropy(RAND_PO

             int attempts = 3;

             const int fd = get_random_device(i);

-            if (fd == -1)

+            if (fd == -1) {

+                OPENSSL_showfatal("Random device %s cannot be opened.\n", random_device_paths[i]);

                 continue;

+            }

             while (bytes_needed != 0 && attempts-- > 0) {

                 buffer = rand_pool_add_begin(pool, bytes_needed);

@@ -742,7 +750,9 @@ size_t rand_pool_acquire_entropy(RAND_PO

             return entropy_available;

     }

 #   endif

-

+#   ifdef OPENSSL_RAND_SEED_GETRANDOM

+    }

+#   endif

     return rand_pool_entropy_available(pool);

 #  endif

 }

diff -up openssl-1.1.1i/include/crypto/fips.h.fips-post-rand openssl-1.1.1i/include/crypto/fips.h

--- openssl-1.1.1i/include/crypto/fips.h.fips-post-rand	2020-12-09 10:26:41.639106369 +0100

+++ openssl-1.1.1i/include/crypto/fips.h	2020-12-09 10:26:41.657106516 +0100

@@ -77,6 +77,8 @@ int FIPS_selftest_hmac(void);

 int FIPS_selftest_drbg(void);

 int FIPS_selftest_cmac(void);

+int fips_in_post(void);

+

 int fips_pkey_signature_test(EVP_PKEY *pkey,

                                  const unsigned char *tbs, int tbslen,

                                  const unsigned char *kat,

diff -up openssl-1.1.1i/include/crypto/rand.h.fips-post-rand openssl-1.1.1i/include/crypto/rand.h

--- openssl-1.1.1i/include/crypto/rand.h.fips-post-rand	2020-12-08 14:20:59.000000000 +0100

+++ openssl-1.1.1i/include/crypto/rand.h	2020-12-09 10:26:41.657106516 +0100

@@ -24,6 +24,7 @@

 typedef struct rand_pool_st RAND_POOL;

 void rand_cleanup_int(void);

+void rand_force_reseed(void);

 void rand_drbg_cleanup_int(void);

 void drbg_delete_thread_state(void);