diff --git a/src/intel/vulkan/anv_cmd_buffer.c b/src/intel/vulkan/anv_cmd_buffer.c
index 5b013a833d0..57b42430f00 100644
--- a/src/intel/vulkan/anv_cmd_buffer.c
+++ b/src/intel/vulkan/anv_cmd_buffer.c
@@ -1199,8 +1199,10 @@ anv_cmd_buffer_merge_dynamic(struct anv_cmd_buffer *cmd_buffer,
    state = anv_cmd_buffer_alloc_dynamic_state(cmd_buffer,
                                               dwords * 4, alignment);
    p = state.map;
-   for (uint32_t i = 0; i < dwords; i++)
+   for (uint32_t i = 0; i < dwords; i++) {
+      assert((a[i] & b[i]) == 0);
       p[i] = a[i] | b[i];
+   }
 
    VG(VALGRIND_CHECK_MEM_IS_DEFINED(p, dwords * 4));
 
diff --git a/src/intel/vulkan/anv_private.h b/src/intel/vulkan/anv_private.h
index 84c4f0083ac..4b72d9594f7 100644
--- a/src/intel/vulkan/anv_private.h
+++ b/src/intel/vulkan/anv_private.h
@@ -2447,6 +2447,9 @@ _anv_combine_address(struct anv_batch *batch, void *location,
            assert((pipeline)->state.len == __anv_cmd_length(cmd));      \
            __anv_cmd_pack(cmd)(batch, _partial, &name);                 \
            for (uint32_t i = 0; i < __anv_cmd_length(cmd); i++) {       \
+              assert((_partial[i] &                                     \
+                      (pipeline)->batch_data[                           \
+                         (pipeline)->state.offset + i]) == 0);          \
               ((uint32_t *)_dst)[i] = _partial[i] |                     \
                  (pipeline)->batch_data[(pipeline)->state.offset + i];  \
            }                                                            \
@@ -2466,6 +2469,9 @@ _anv_combine_address(struct anv_batch *batch, void *location,
            assert(_cmd_state->len == __anv_cmd_length(cmd));            \
            __anv_cmd_pack(cmd)(batch, _partial, &name);                 \
            for (uint32_t i = 0; i < __anv_cmd_length(cmd); i++) {       \
+              assert((_partial[i] &                                     \
+                      (pipeline)->batch_data[                           \
+                         (pipeline)->state.offset + i]) == 0);          \
               ((uint32_t *)_dst)[i] = _partial[i] |                     \
                  (pipeline)->batch_data[_cmd_state->offset + i];        \
            }                                                            \