diff --git a/ChangeLog b/ChangeLog
index 1d6c897..9a40325 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -33,6 +33,16 @@
    * Enable Suite B with subset of ECP curves. Make sure the code compiles even
      if some curves are not defined. Fixes #1591 reported by dbedev.
    * Fix misuse of signed arithmetic in the HAVEGE module. #2598
+   * Update test certificates that were about to expire. Reported by
+     Bernhard M. Wiedemann in #2357.
+   * Fix the build on ARMv5TE in ARM mode to not use assembly instructions
+     that are only available in Thumb mode. Fix contributed by Aurelien Jarno
+     in #2169.
+   * Fix undefined memset(NULL) call in test_suite_nist_kw.
+   * Make NV seed test support MBEDTLS_ENTROPY_FORCE_SHA256.
+   * Fix propagation of restart contexts in restartable EC operations.
+     This could previously lead to segmentation faults in builds using an
+     address-sanitizer and enabling but not using MBEDTLS_ECP_RESTARTABLE.
 
 Changes
    * Make it easier to define MBEDTLS_PARAM_FAILED as assert (which config.h
diff --git a/include/mbedtls/bn_mul.h b/include/mbedtls/bn_mul.h
index c33bd8d..748975e 100644
--- a/include/mbedtls/bn_mul.h
+++ b/include/mbedtls/bn_mul.h
@@ -642,7 +642,8 @@
            "r6", "r7", "r8", "r9", "cc"         \
          );
 
-#elif defined (__ARM_FEATURE_DSP) && (__ARM_FEATURE_DSP == 1)
+#elif (__ARM_ARCH >= 6) && \
+    defined (__ARM_FEATURE_DSP) && (__ARM_FEATURE_DSP == 1)
 
 #define MULADDC_INIT                            \
     asm(
diff --git a/library/ecdsa.c b/library/ecdsa.c
index c5b8df9..2b48006 100644
--- a/library/ecdsa.c
+++ b/library/ecdsa.c
@@ -172,11 +172,11 @@
 }
 #endif /* MBEDTLS_ECDSA_DETERMINISTIC */
 
-#define ECDSA_RS_ECP    &rs_ctx->ecp
+#define ECDSA_RS_ECP    ( rs_ctx == NULL ? NULL : &rs_ctx->ecp )
 
 /* Utility macro for checking and updating ops budget */
 #define ECDSA_BUDGET( ops )   \
-    MBEDTLS_MPI_CHK( mbedtls_ecp_check_budget( grp, &rs_ctx->ecp, ops ) );
+    MBEDTLS_MPI_CHK( mbedtls_ecp_check_budget( grp, ECDSA_RS_ECP, ops ) );
 
 /* Call this when entering a function that needs its own sub-context */
 #define ECDSA_RS_ENTER( SUB )   do {                                 \
diff --git a/tests/compat.sh b/tests/compat.sh
index 80c2d31..54bc0b7 100755
--- a/tests/compat.sh
+++ b/tests/compat.sh
@@ -216,14 +216,13 @@
         G_CIPHERS=$( filter "$G_CIPHERS" )
     fi
 
-    # OpenSSL 1.0.1h doesn't support DTLS 1.2
-    if [ `minor_ver "$MODE"` -ge 3 ] && is_dtls "$MODE"; then
+    # OpenSSL <1.0.2 doesn't support DTLS 1.2. Check what OpenSSL
+    # supports from the s_server help. (The s_client help isn't
+    # accurate as of 1.0.2g: it supports DTLS 1.2 but doesn't list it.
+    # But the s_server help seems to be accurate.)
+    if ! $OPENSSL_CMD s_server -help 2>&1 | grep -q "^ *-$MODE "; then
+        M_CIPHERS=""
         O_CIPHERS=""
-        case "$PEER" in
-            [Oo]pen*)
-                M_CIPHERS=""
-                ;;
-        esac
     fi
 
     # For GnuTLS client -> mbed TLS server,
diff --git a/tests/scripts/all.sh b/tests/scripts/all.sh
index edbdfce..3678cc4 100755
--- a/tests/scripts/all.sh
+++ b/tests/scripts/all.sh
@@ -985,6 +985,26 @@
 component_test_make_shared () {
     msg "build/test: make shared" # ~ 40s
     make SHARED=1 all check
+    ldd programs/util/strerror | grep libmbedcrypto
+}
+
+component_test_cmake_shared () {
+    msg "build/test: cmake shared" # ~ 2min
+    cmake -DUSE_SHARED_MBEDTLS_LIBRARY=On .
+    make
+    ldd programs/util/strerror | grep libmbedcrypto
+    make test
+}
+
+component_build_mbedtls_config_file () {
+    msg "build: make with MBEDTLS_CONFIG_FILE" # ~40s
+    # Use the full config so as to catch a maximum of places where
+    # the check of MBEDTLS_CONFIG_FILE might be missing.
+    scripts/config.pl full
+    sed 's!"check_config.h"!"mbedtls/check_config.h"!' <"$CONFIG_H" >full_config.h
+    echo '#error "MBEDTLS_CONFIG_FILE is not working"' >"$CONFIG_H"
+    make CFLAGS="-I '$PWD' -DMBEDTLS_CONFIG_FILE='\"full_config.h\"'"
+    rm -f full_config.h
 }
 
 component_test_m32_o0 () {
@@ -1097,6 +1117,17 @@
     make CC=arm-none-eabi-gcc AR=arm-none-eabi-ar LD=arm-none-eabi-ld CFLAGS='-Werror -Wall -Wextra' lib
 }
 
+component_build_arm_none_eabi_gcc_arm5vte () {
+    msg "build: arm-none-eabi-gcc -march=arm5vte, make" # ~ 10s
+    scripts/config.pl baremetal
+    # Build for a target platform that's close to what Debian uses
+    # for its "armel" distribution (https://wiki.debian.org/ArmEabiPort).
+    # See https://github.com/ARMmbed/mbedtls/pull/2169 and comments.
+    # It would be better to build with arm-linux-gnueabi-gcc but
+    # we don't have that on our CI at this time.
+    make CC=arm-none-eabi-gcc AR=arm-none-eabi-ar CFLAGS='-Werror -Wall -Wextra -march=armv5te -O1' LDFLAGS='-march=armv5te' SHELL='sh -x' lib
+}
+
 component_build_arm_none_eabi_gcc_no_udbl_division () {
     msg "build: arm-none-eabi-gcc -DMBEDTLS_NO_UDBL_DIVISION, make" # ~ 10s
     scripts/config.pl baremetal
diff --git a/tests/suites/test_suite_entropy.function b/tests/suites/test_suite_entropy.function
index 5a41b9a..cf19732 100644
--- a/tests/suites/test_suite_entropy.function
+++ b/tests/suites/test_suite_entropy.function
@@ -301,11 +301,24 @@
 }
 /* END_CASE */
 
-/* BEGIN_CASE depends_on:MBEDTLS_ENTROPY_NV_SEED:MBEDTLS_PLATFORM_NV_SEED_ALT:MBEDTLS_ENTROPY_SHA512_ACCUMULATOR */
+/* BEGIN_CASE depends_on:MBEDTLS_MD_C:MBEDTLS_ENTROPY_NV_SEED:MBEDTLS_PLATFORM_NV_SEED_ALT */
 void entropy_nv_seed( data_t * read_seed )
 {
-    mbedtls_sha512_context accumulator;
+#if defined(MBEDTLS_ENTROPY_SHA512_ACCUMULATOR)
+    const mbedtls_md_info_t *md_info =
+        mbedtls_md_info_from_type( MBEDTLS_MD_SHA512 );
+#elif defined(MBEDTLS_ENTROPY_SHA256_ACCUMULATOR)
+    const mbedtls_md_info_t *md_info =
+        mbedtls_md_info_from_type( MBEDTLS_MD_SHA256 );
+#else
+#error "Unsupported entropy accumulator"
+#endif
+    mbedtls_md_context_t accumulator;
     mbedtls_entropy_context ctx;
+    int (*original_mbedtls_nv_seed_read)( unsigned char *buf, size_t buf_len ) =
+        mbedtls_nv_seed_read;
+    int (*original_mbedtls_nv_seed_write)( unsigned char *buf, size_t buf_len ) =
+        mbedtls_nv_seed_write;
 
     unsigned char header[2];
     unsigned char entropy[MBEDTLS_ENTROPY_BLOCK_SIZE];
@@ -316,17 +329,14 @@
 
     memset( entropy, 0, MBEDTLS_ENTROPY_BLOCK_SIZE );
     memset( buf, 0, MBEDTLS_ENTROPY_BLOCK_SIZE );
-    memset( buffer_seed, 0, MBEDTLS_ENTROPY_BLOCK_SIZE );
     memset( empty, 0, MBEDTLS_ENTROPY_BLOCK_SIZE );
     memset( check_seed, 2, MBEDTLS_ENTROPY_BLOCK_SIZE );
     memset( check_entropy, 3, MBEDTLS_ENTROPY_BLOCK_SIZE );
 
-    // Set the initial NV seed to read
-    memcpy( buffer_seed, read_seed->x, read_seed->len );
-
     // Make sure we read/write NV seed from our buffers
     mbedtls_platform_set_nv_seed( buffer_nv_seed_read, buffer_nv_seed_write );
 
+    mbedtls_md_init( &accumulator );
     mbedtls_entropy_init( &ctx );
     entropy_clear_sources( &ctx );
 
@@ -334,45 +344,57 @@
                                              MBEDTLS_ENTROPY_BLOCK_SIZE,
                                              MBEDTLS_ENTROPY_SOURCE_STRONG ) == 0 );
 
+    // Set the initial NV seed to read
+    TEST_ASSERT( read_seed->len >= MBEDTLS_ENTROPY_BLOCK_SIZE );
+    memcpy( buffer_seed, read_seed->x, MBEDTLS_ENTROPY_BLOCK_SIZE );
+
     // Do an entropy run
     TEST_ASSERT( mbedtls_entropy_func( &ctx, entropy, sizeof( entropy ) ) == 0 );
-
     // Determine what should have happened with manual entropy internal logic
-    // Only use the SHA-512 version to check
 
     // Init accumulator
     header[1] = MBEDTLS_ENTROPY_BLOCK_SIZE;
-    mbedtls_sha512_starts( &accumulator, 0 );
+    TEST_ASSERT( mbedtls_md_setup( &accumulator, md_info, 0 ) == 0 );
 
     // First run for updating write_seed
     header[0] = 0;
-    mbedtls_sha512_update( &accumulator, header, 2 );
-    mbedtls_sha512_update( &accumulator, read_seed->x, read_seed->len );
-    mbedtls_sha512_finish( &accumulator, buf );
+    TEST_ASSERT( mbedtls_md_starts( &accumulator ) == 0 );
+    TEST_ASSERT( mbedtls_md_update( &accumulator, header, 2 ) == 0 );
+    TEST_ASSERT( mbedtls_md_update( &accumulator,
+                                    read_seed->x, MBEDTLS_ENTROPY_BLOCK_SIZE ) == 0 );
+    TEST_ASSERT( mbedtls_md_finish( &accumulator, buf ) == 0 );
 
-    memset( &accumulator, 0, sizeof( mbedtls_sha512_context ) );
-    mbedtls_sha512_starts( &accumulator, 0 );
-    mbedtls_sha512_update( &accumulator, buf, MBEDTLS_ENTROPY_BLOCK_SIZE );
+    TEST_ASSERT( mbedtls_md_starts( &accumulator ) == 0 );
+    TEST_ASSERT( mbedtls_md_update( &accumulator,
+                                    buf, MBEDTLS_ENTROPY_BLOCK_SIZE ) == 0 );
 
-    mbedtls_sha512( buf, MBEDTLS_ENTROPY_BLOCK_SIZE, check_seed, 0 );
+    TEST_ASSERT( mbedtls_md( md_info, buf, MBEDTLS_ENTROPY_BLOCK_SIZE,
+                             check_seed ) == 0 );
 
     // Second run for actual entropy (triggers mbedtls_entropy_update_nv_seed)
     header[0] = MBEDTLS_ENTROPY_SOURCE_MANUAL;
-    mbedtls_sha512_update( &accumulator, header, 2 );
-    mbedtls_sha512_update( &accumulator, empty, MBEDTLS_ENTROPY_BLOCK_SIZE );
+    TEST_ASSERT( mbedtls_md_update( &accumulator, header, 2 ) == 0 );
+    TEST_ASSERT( mbedtls_md_update( &accumulator,
+                                    empty, MBEDTLS_ENTROPY_BLOCK_SIZE ) == 0 );
 
     header[0] = 0;
-    mbedtls_sha512_update( &accumulator, header, 2 );
-    mbedtls_sha512_update( &accumulator, check_seed, MBEDTLS_ENTROPY_BLOCK_SIZE );
-    mbedtls_sha512_finish( &accumulator, buf );
+    TEST_ASSERT( mbedtls_md_update( &accumulator, header, 2 ) == 0 );
+    TEST_ASSERT( mbedtls_md_update( &accumulator,
+                                    check_seed, MBEDTLS_ENTROPY_BLOCK_SIZE ) == 0 );
+    TEST_ASSERT( mbedtls_md_finish( &accumulator, buf ) == 0 );
 
-    mbedtls_sha512( buf, MBEDTLS_ENTROPY_BLOCK_SIZE, check_entropy, 0 );
+    TEST_ASSERT( mbedtls_md( md_info, buf, MBEDTLS_ENTROPY_BLOCK_SIZE,
+                             check_entropy ) == 0 );
 
     // Check result of both NV file and entropy received with the manual calculations
     TEST_ASSERT( memcmp( check_seed, buffer_seed, MBEDTLS_ENTROPY_BLOCK_SIZE ) == 0 );
     TEST_ASSERT( memcmp( check_entropy, entropy, MBEDTLS_ENTROPY_BLOCK_SIZE ) == 0 );
 
+exit:
+    mbedtls_md_free( &accumulator );
     mbedtls_entropy_free( &ctx );
+    mbedtls_nv_seed_read = original_mbedtls_nv_seed_read;
+    mbedtls_nv_seed_write = original_mbedtls_nv_seed_write;
 }
 /* END_CASE */
 
diff --git a/tests/suites/test_suite_nist_kw.function b/tests/suites/test_suite_nist_kw.function
index f1acde9..9c34ea6 100644
--- a/tests/suites/test_suite_nist_kw.function
+++ b/tests/suites/test_suite_nist_kw.function
@@ -170,10 +170,6 @@
         TEST_ASSERT( ciphertext != NULL );
     }
 
-    memset( plaintext, 0, in_len );
-    memset( ciphertext, 0, output_len );
-
-
     TEST_ASSERT( mbedtls_nist_kw_setkey( &ctx, MBEDTLS_CIPHER_ID_AES,
                                          key, 8 * sizeof( key ), 1 ) == 0 );
 
@@ -225,10 +221,6 @@
         TEST_ASSERT( ciphertext != NULL );
     }
 
-    memset( plaintext, 0, output_len );
-    memset( ciphertext, 0, in_len );
-
-
     TEST_ASSERT( mbedtls_nist_kw_setkey( &ctx, MBEDTLS_CIPHER_ID_AES,
                                          key, 8 * sizeof( key ), 0 ) == 0 );
     unwrap_ret = mbedtls_nist_kw_unwrap( &ctx, mode, ciphertext, in_len,