diff --git a/src/core/lib/surface/call.c b/src/core/lib/surface/call.c
index 27097faaa6f..d64c2410bf6 100644
--- a/src/core/lib/surface/call.c
+++ b/src/core/lib/surface/call.c
@@ -312,15 +312,18 @@ grpc_error *grpc_call_create(grpc_exec_ctx *exec_ctx,
     /* TODO(ctiller): This should change to use the appropriate census start_op
      * call. */
     if (args->propagation_mask & GRPC_PROPAGATE_CENSUS_TRACING_CONTEXT) {
-      GPR_ASSERT(args->propagation_mask & GRPC_PROPAGATE_CENSUS_STATS_CONTEXT);
+      if (0 == (args->propagation_mask & GRPC_PROPAGATE_CENSUS_STATS_CONTEXT)) {
+        add_init_error(&error,
+                       GRPC_ERROR_CREATE("Census tracing propagation requested "
+                                         "without Census context propagation"));
+      }
       grpc_call_context_set(
           call, GRPC_CONTEXT_TRACING,
           args->parent_call->context[GRPC_CONTEXT_TRACING].value, NULL);
-    } else if (0 ==
-               (args->propagation_mask & GRPC_PROPAGATE_CENSUS_STATS_CONTEXT)) {
+    } else if (args->propagation_mask & GRPC_PROPAGATE_CENSUS_STATS_CONTEXT) {
       add_init_error(&error,
-                     GRPC_ERROR_CREATE("Census tracing propagation requested "
-                                       "without Census context propagation"));
+                     GRPC_ERROR_CREATE("Census context propagation requested "
+                                       "without Census tracing propagation"));
     }
     if (args->propagation_mask & GRPC_PROPAGATE_CANCELLATION) {
       call->cancellation_is_inherited = 1;
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/0a4b84c2a50ba66f06c99e945912972cdcfc96be b/test/core/end2end/fuzzers/api_fuzzer_corpus/0a4b84c2a50ba66f06c99e945912972cdcfc96be
new file mode 100644
index 00000000000..d0f43e9d918
Binary files /dev/null and b/test/core/end2end/fuzzers/api_fuzzer_corpus/0a4b84c2a50ba66f06c99e945912972cdcfc96be differ
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/22c7bfb3460529c77255e9cb82ef8f7d8381f8f3 b/test/core/end2end/fuzzers/api_fuzzer_corpus/22c7bfb3460529c77255e9cb82ef8f7d8381f8f3
new file mode 100644
index 00000000000..b5f6a8572cc
Binary files /dev/null and b/test/core/end2end/fuzzers/api_fuzzer_corpus/22c7bfb3460529c77255e9cb82ef8f7d8381f8f3 differ
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/33f0e1b78dd158df720604cbb4c9a0c90eece435 b/test/core/end2end/fuzzers/api_fuzzer_corpus/33f0e1b78dd158df720604cbb4c9a0c90eece435
new file mode 100644
index 00000000000..df5e44292ea
Binary files /dev/null and b/test/core/end2end/fuzzers/api_fuzzer_corpus/33f0e1b78dd158df720604cbb4c9a0c90eece435 differ
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/3cac506501825fadf2e4adf7619d16f72cfd8832 b/test/core/end2end/fuzzers/api_fuzzer_corpus/3cac506501825fadf2e4adf7619d16f72cfd8832
new file mode 100644
index 00000000000..62447e4f081
Binary files /dev/null and b/test/core/end2end/fuzzers/api_fuzzer_corpus/3cac506501825fadf2e4adf7619d16f72cfd8832 differ
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/87a34188d51bc8b43bd7d9097958097e70154960 b/test/core/end2end/fuzzers/api_fuzzer_corpus/87a34188d51bc8b43bd7d9097958097e70154960
new file mode 100644
index 00000000000..a90fb52338d
Binary files /dev/null and b/test/core/end2end/fuzzers/api_fuzzer_corpus/87a34188d51bc8b43bd7d9097958097e70154960 differ
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/939a61533db8868591c514fc41c7dfb4232e3e4f b/test/core/end2end/fuzzers/api_fuzzer_corpus/939a61533db8868591c514fc41c7dfb4232e3e4f
new file mode 100644
index 00000000000..c21081b5419
Binary files /dev/null and b/test/core/end2end/fuzzers/api_fuzzer_corpus/939a61533db8868591c514fc41c7dfb4232e3e4f differ
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/98a661d328f1ad6277c802604126d91965d6fda8 b/test/core/end2end/fuzzers/api_fuzzer_corpus/98a661d328f1ad6277c802604126d91965d6fda8
new file mode 100644
index 00000000000..ee68d203dc6
Binary files /dev/null and b/test/core/end2end/fuzzers/api_fuzzer_corpus/98a661d328f1ad6277c802604126d91965d6fda8 differ
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/9c052499ada417d5038f8cc7da62e6acae9ba9ae b/test/core/end2end/fuzzers/api_fuzzer_corpus/9c052499ada417d5038f8cc7da62e6acae9ba9ae
new file mode 100644
index 00000000000..ccee196ca36
Binary files /dev/null and b/test/core/end2end/fuzzers/api_fuzzer_corpus/9c052499ada417d5038f8cc7da62e6acae9ba9ae differ
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/a881a2dcd16f595644c1543ccf047b7ae5bb7fa4 b/test/core/end2end/fuzzers/api_fuzzer_corpus/a881a2dcd16f595644c1543ccf047b7ae5bb7fa4
new file mode 100644
index 00000000000..cd6c17b10bf
Binary files /dev/null and b/test/core/end2end/fuzzers/api_fuzzer_corpus/a881a2dcd16f595644c1543ccf047b7ae5bb7fa4 differ
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/b09e64aa807db006a219bd1b9faf1a2e00dc6d33 b/test/core/end2end/fuzzers/api_fuzzer_corpus/b09e64aa807db006a219bd1b9faf1a2e00dc6d33
new file mode 100644
index 00000000000..50548fa35d9
Binary files /dev/null and b/test/core/end2end/fuzzers/api_fuzzer_corpus/b09e64aa807db006a219bd1b9faf1a2e00dc6d33 differ
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-b208a1eb5ef9f229f309492329323f485768fa74 b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-b208a1eb5ef9f229f309492329323f485768fa74
new file mode 100644
index 00000000000..e7a6aedd9fe
Binary files /dev/null and b/test/core/end2end/fuzzers/api_fuzzer_corpus/crash-b208a1eb5ef9f229f309492329323f485768fa74 differ
diff --git a/test/core/end2end/fuzzers/api_fuzzer_corpus/e52ac2e3cad2e544488a01822115cb37d10a76ce b/test/core/end2end/fuzzers/api_fuzzer_corpus/e52ac2e3cad2e544488a01822115cb37d10a76ce
new file mode 100644
index 00000000000..b3bb2405d81
Binary files /dev/null and b/test/core/end2end/fuzzers/api_fuzzer_corpus/e52ac2e3cad2e544488a01822115cb37d10a76ce differ
diff --git a/tools/run_tests/generated/tests.json b/tools/run_tests/generated/tests.json
index c28a68e910f..310abb43f29 100644
--- a/tools/run_tests/generated/tests.json
+++ b/tools/run_tests/generated/tests.json
@@ -42323,6 +42323,28 @@
     ], 
     "uses_polling": false
   }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/0a4b84c2a50ba66f06c99e945912972cdcfc96be"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "api_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
   {
     "args": [
       "test/core/end2end/fuzzers/api_fuzzer_corpus/0a71ae781345f9ee2b08008a81f9055e6c1d5256"
@@ -46679,6 +46701,28 @@
     ], 
     "uses_polling": false
   }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/22c7bfb3460529c77255e9cb82ef8f7d8381f8f3"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "api_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
   {
     "args": [
       "test/core/end2end/fuzzers/api_fuzzer_corpus/22c9ed2979d9963bce6500997f1e0433988e7e37"
@@ -50067,6 +50111,28 @@
     ], 
     "uses_polling": false
   }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/33f0e1b78dd158df720604cbb4c9a0c90eece435"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "api_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
   {
     "args": [
       "test/core/end2end/fuzzers/api_fuzzer_corpus/33ff864434b4f0c0e08c00ec2442cb521e9f79ed"
@@ -51563,6 +51629,28 @@
     ], 
     "uses_polling": false
   }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/3cac506501825fadf2e4adf7619d16f72cfd8832"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "api_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
   {
     "args": [
       "test/core/end2end/fuzzers/api_fuzzer_corpus/3cc56c99c6046f0d66c50c4062d90608064fd742"
@@ -65643,6 +65731,28 @@
     ], 
     "uses_polling": false
   }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/87a34188d51bc8b43bd7d9097958097e70154960"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "api_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
   {
     "args": [
       "test/core/end2end/fuzzers/api_fuzzer_corpus/87a4605e106399e71e689468a23ba11e7f17de2b"
@@ -67887,6 +67997,28 @@
     ], 
     "uses_polling": false
   }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/939a61533db8868591c514fc41c7dfb4232e3e4f"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "api_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
   {
     "args": [
       "test/core/end2end/fuzzers/api_fuzzer_corpus/940a622e8995529f6b0455906d8a035902682d2d"
@@ -68745,6 +68877,28 @@
     ], 
     "uses_polling": false
   }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/98a661d328f1ad6277c802604126d91965d6fda8"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "api_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
   {
     "args": [
       "test/core/end2end/fuzzers/api_fuzzer_corpus/98b88c0751f1d9e5dc3d4751d2cb52ed8f0b008d"
@@ -69339,6 +69493,28 @@
     ], 
     "uses_polling": false
   }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/9c052499ada417d5038f8cc7da62e6acae9ba9ae"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "api_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
   {
     "args": [
       "test/core/end2end/fuzzers/api_fuzzer_corpus/9c0911c1a4b91f842670082c14af67d1f4b7bb6f"
@@ -71385,6 +71561,28 @@
     ], 
     "uses_polling": false
   }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/a881a2dcd16f595644c1543ccf047b7ae5bb7fa4"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "api_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
   {
     "args": [
       "test/core/end2end/fuzzers/api_fuzzer_corpus/a89d59f59e43670ca3e8baf454fea723ae295653"
@@ -72771,6 +72969,28 @@
     ], 
     "uses_polling": false
   }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/b09e64aa807db006a219bd1b9faf1a2e00dc6d33"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "api_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
   {
     "args": [
       "test/core/end2end/fuzzers/api_fuzzer_corpus/b0c9bc430c79f064b61d8cad076b072c9c014804"
@@ -80493,6 +80713,28 @@
     ], 
     "uses_polling": false
   }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/crash-b208a1eb5ef9f229f309492329323f485768fa74"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "api_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
   {
     "args": [
       "test/core/end2end/fuzzers/api_fuzzer_corpus/crash-b39ce8e62e5c9e046d67e946436609e01f067a53"
@@ -84981,6 +85223,28 @@
     ], 
     "uses_polling": false
   }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/api_fuzzer_corpus/e52ac2e3cad2e544488a01822115cb37d10a76ce"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "api_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
   {
     "args": [
       "test/core/end2end/fuzzers/api_fuzzer_corpus/e53a201505fe8412278d7444b1a915b353bacb3e"