tests/unit: Replace g_memdup() by g_memdup2()

Per https://discourse.gnome.org/t/port-your-module-from-g-memdup-to-g-memdup2-now/5538

  The old API took the size of the memory to duplicate as a guint,
  whereas most memory functions take memory sizes as a gsize. This
  made it easy to accidentally pass a gsize to g_memdup(). For large
  values, that would lead to a silent truncation of the size from 64
  to 32 bits, and result in a heap area being returned which is
  significantly smaller than what the caller expects. This can likely
  be exploited in various modules to cause a heap buffer overflow.

Replace g_memdup() by the safer g_memdup2() wrapper.

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20210903174510.751630-24-philmd@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>

diff --git a/tests/unit/ptimer-test.c b/tests/unit/ptimer-test.c
index a80ef5aff4c188f45906a4828d2d54be9a1d619e..04b5f4e3d03148010748956bf894c4db3cb55b0f 100644 (file)
--- a/tests/unit/ptimer-test.c
+++ b/tests/unit/ptimer-test.c
@@ -798,64 +798,64 @@ static void add_ptimer_tests(uint8_t policy)
 
     g_test_add_data_func_full(
         tmp = g_strdup_printf("/ptimer/set_count policy=%s", policy_name),
-        g_memdup(&policy, 1), check_set_count, g_free);
+        g_memdup2(&policy, 1), check_set_count, g_free);
     g_free(tmp);
 
     g_test_add_data_func_full(
         tmp = g_strdup_printf("/ptimer/set_limit policy=%s", policy_name),
-        g_memdup(&policy, 1), check_set_limit, g_free);
+        g_memdup2(&policy, 1), check_set_limit, g_free);
     g_free(tmp);
 
     g_test_add_data_func_full(
         tmp = g_strdup_printf("/ptimer/oneshot policy=%s", policy_name),
-        g_memdup(&policy, 1), check_oneshot, g_free);
+        g_memdup2(&policy, 1), check_oneshot, g_free);
     g_free(tmp);
 
     g_test_add_data_func_full(
         tmp = g_strdup_printf("/ptimer/periodic policy=%s", policy_name),
-        g_memdup(&policy, 1), check_periodic, g_free);
+        g_memdup2(&policy, 1), check_periodic, g_free);
     g_free(tmp);
 
     g_test_add_data_func_full(
         tmp = g_strdup_printf("/ptimer/on_the_fly_mode_change policy=%s",
                               policy_name),
-        g_memdup(&policy, 1), check_on_the_fly_mode_change, g_free);
+        g_memdup2(&policy, 1), check_on_the_fly_mode_change, g_free);
     g_free(tmp);
 
     g_test_add_data_func_full(
         tmp = g_strdup_printf("/ptimer/on_the_fly_period_change policy=%s",
                               policy_name),
-        g_memdup(&policy, 1), check_on_the_fly_period_change, g_free);
+        g_memdup2(&policy, 1), check_on_the_fly_period_change, g_free);
     g_free(tmp);
 
     g_test_add_data_func_full(
         tmp = g_strdup_printf("/ptimer/on_the_fly_freq_change policy=%s",
                               policy_name),
-        g_memdup(&policy, 1), check_on_the_fly_freq_change, g_free);
+        g_memdup2(&policy, 1), check_on_the_fly_freq_change, g_free);
     g_free(tmp);
 
     g_test_add_data_func_full(
         tmp = g_strdup_printf("/ptimer/run_with_period_0 policy=%s",
                               policy_name),
-        g_memdup(&policy, 1), check_run_with_period_0, g_free);
+        g_memdup2(&policy, 1), check_run_with_period_0, g_free);
     g_free(tmp);
 
     g_test_add_data_func_full(
         tmp = g_strdup_printf("/ptimer/run_with_delta_0 policy=%s",
                               policy_name),
-        g_memdup(&policy, 1), check_run_with_delta_0, g_free);
+        g_memdup2(&policy, 1), check_run_with_delta_0, g_free);
     g_free(tmp);
 
     g_test_add_data_func_full(
         tmp = g_strdup_printf("/ptimer/periodic_with_load_0 policy=%s",
                               policy_name),
-        g_memdup(&policy, 1), check_periodic_with_load_0, g_free);
+        g_memdup2(&policy, 1), check_periodic_with_load_0, g_free);
     g_free(tmp);
 
     g_test_add_data_func_full(
         tmp = g_strdup_printf("/ptimer/oneshot_with_load_0 policy=%s",
                               policy_name),
-        g_memdup(&policy, 1), check_oneshot_with_load_0, g_free);
+        g_memdup2(&policy, 1), check_oneshot_with_load_0, g_free);
     g_free(tmp);
 }
 

diff --git a/tests/unit/test-iov.c b/tests/unit/test-iov.c
index 93bda00f0e10dd053eeaf3c8a436308ddb05f567..6f7623d3107fcb68a6bc9d16298dcef4b785f29f 100644 (file)
--- a/tests/unit/test-iov.c
+++ b/tests/unit/test-iov.c
@@ -172,7 +172,7 @@ static void test_io(void)
     }
     iov_from_buf(iov, niov, 0, buf, sz);
 
-    siov = g_memdup(iov, sizeof(*iov) * niov);
+    siov = g_memdup2(iov, sizeof(*iov) * niov);
 
     if (socketpair(PF_UNIX, SOCK_STREAM, 0, sv) < 0) {
        perror("socketpair");
@@ -349,7 +349,7 @@ static void test_discard_front_undo(void)
 
     /* Discard zero bytes */
     iov_random(&iov, &iov_cnt);
-    iov_orig = g_memdup(iov, sizeof(iov[0]) * iov_cnt);
+    iov_orig = g_memdup2(iov, sizeof(iov[0]) * iov_cnt);
     iov_tmp = iov;
     iov_cnt_tmp = iov_cnt;
     iov_discard_front_undoable(&iov_tmp, &iov_cnt_tmp, 0, &undo);
@@ -360,7 +360,7 @@ static void test_discard_front_undo(void)
 
     /* Discard more bytes than vector size */
     iov_random(&iov, &iov_cnt);
-    iov_orig = g_memdup(iov, sizeof(iov[0]) * iov_cnt);
+    iov_orig = g_memdup2(iov, sizeof(iov[0]) * iov_cnt);
     iov_tmp = iov;
     iov_cnt_tmp = iov_cnt;
     size = iov_size(iov, iov_cnt);
@@ -372,7 +372,7 @@ static void test_discard_front_undo(void)
 
     /* Discard entire vector */
     iov_random(&iov, &iov_cnt);
-    iov_orig = g_memdup(iov, sizeof(iov[0]) * iov_cnt);
+    iov_orig = g_memdup2(iov, sizeof(iov[0]) * iov_cnt);
     iov_tmp = iov;
     iov_cnt_tmp = iov_cnt;
     size = iov_size(iov, iov_cnt);
@@ -384,7 +384,7 @@ static void test_discard_front_undo(void)
 
     /* Discard within first element */
     iov_random(&iov, &iov_cnt);
-    iov_orig = g_memdup(iov, sizeof(iov[0]) * iov_cnt);
+    iov_orig = g_memdup2(iov, sizeof(iov[0]) * iov_cnt);
     iov_tmp = iov;
     iov_cnt_tmp = iov_cnt;
     size = g_test_rand_int_range(1, iov->iov_len);
@@ -396,7 +396,7 @@ static void test_discard_front_undo(void)
 
     /* Discard entire first element */
     iov_random(&iov, &iov_cnt);
-    iov_orig = g_memdup(iov, sizeof(iov[0]) * iov_cnt);
+    iov_orig = g_memdup2(iov, sizeof(iov[0]) * iov_cnt);
     iov_tmp = iov;
     iov_cnt_tmp = iov_cnt;
     iov_discard_front_undoable(&iov_tmp, &iov_cnt_tmp, iov->iov_len, &undo);
@@ -407,7 +407,7 @@ static void test_discard_front_undo(void)
 
     /* Discard within second element */
     iov_random(&iov, &iov_cnt);
-    iov_orig = g_memdup(iov, sizeof(iov[0]) * iov_cnt);
+    iov_orig = g_memdup2(iov, sizeof(iov[0]) * iov_cnt);
     iov_tmp = iov;
     iov_cnt_tmp = iov_cnt;
     size = iov->iov_len + g_test_rand_int_range(1, iov[1].iov_len);
@@ -498,7 +498,7 @@ static void test_discard_back_undo(void)
 
     /* Discard zero bytes */
     iov_random(&iov, &iov_cnt);
-    iov_orig = g_memdup(iov, sizeof(iov[0]) * iov_cnt);
+    iov_orig = g_memdup2(iov, sizeof(iov[0]) * iov_cnt);
     iov_cnt_tmp = iov_cnt;
     iov_discard_back_undoable(iov, &iov_cnt_tmp, 0, &undo);
     iov_discard_undo(&undo);
@@ -508,7 +508,7 @@ static void test_discard_back_undo(void)
 
     /* Discard more bytes than vector size */
     iov_random(&iov, &iov_cnt);
-    iov_orig = g_memdup(iov, sizeof(iov[0]) * iov_cnt);
+    iov_orig = g_memdup2(iov, sizeof(iov[0]) * iov_cnt);
     iov_cnt_tmp = iov_cnt;
     size = iov_size(iov, iov_cnt);
     iov_discard_back_undoable(iov, &iov_cnt_tmp, size + 1, &undo);
@@ -519,7 +519,7 @@ static void test_discard_back_undo(void)
 
     /* Discard entire vector */
     iov_random(&iov, &iov_cnt);
-    iov_orig = g_memdup(iov, sizeof(iov[0]) * iov_cnt);
+    iov_orig = g_memdup2(iov, sizeof(iov[0]) * iov_cnt);
     iov_cnt_tmp = iov_cnt;
     size = iov_size(iov, iov_cnt);
     iov_discard_back_undoable(iov, &iov_cnt_tmp, size, &undo);
@@ -530,7 +530,7 @@ static void test_discard_back_undo(void)
 
     /* Discard within last element */
     iov_random(&iov, &iov_cnt);
-    iov_orig = g_memdup(iov, sizeof(iov[0]) * iov_cnt);
+    iov_orig = g_memdup2(iov, sizeof(iov[0]) * iov_cnt);
     iov_cnt_tmp = iov_cnt;
     size = g_test_rand_int_range(1, iov[iov_cnt - 1].iov_len);
     iov_discard_back_undoable(iov, &iov_cnt_tmp, size, &undo);
@@ -541,7 +541,7 @@ static void test_discard_back_undo(void)
 
     /* Discard entire last element */
     iov_random(&iov, &iov_cnt);
-    iov_orig = g_memdup(iov, sizeof(iov[0]) * iov_cnt);
+    iov_orig = g_memdup2(iov, sizeof(iov[0]) * iov_cnt);
     iov_cnt_tmp = iov_cnt;
     size = iov[iov_cnt - 1].iov_len;
     iov_discard_back_undoable(iov, &iov_cnt_tmp, size, &undo);
@@ -552,7 +552,7 @@ static void test_discard_back_undo(void)
 
     /* Discard within second-to-last element */
     iov_random(&iov, &iov_cnt);
-    iov_orig = g_memdup(iov, sizeof(iov[0]) * iov_cnt);
+    iov_orig = g_memdup2(iov, sizeof(iov[0]) * iov_cnt);
     iov_cnt_tmp = iov_cnt;
     size = iov[iov_cnt - 1].iov_len +
            g_test_rand_int_range(1, iov[iov_cnt - 2].iov_len);