diff --git a/debuggerd/crash_dump.cpp b/debuggerd/crash_dump.cpp
index 0ca90c3..d4be25b 100644
--- a/debuggerd/crash_dump.cpp
+++ b/debuggerd/crash_dump.cpp
@@ -218,7 +218,7 @@
   }
 
   if (proc_info.pid != expected_pid) {
-    LOG(FATAL) << "pid mismatch: expected " << expected_pid << ", actual " << proc_info.ppid;
+    LOG(FATAL) << "pid mismatch: expected " << expected_pid << ", actual " << proc_info.pid;
   }
 }
 
@@ -254,7 +254,7 @@
   }
 
   if (!android::base::ParseInt(argv[2], &pseudothread_tid, 1, std::numeric_limits<pid_t>::max())) {
-    LOG(FATAL) << "invalid pseudothread tid: " << argv[1];
+    LOG(FATAL) << "invalid pseudothread tid: " << argv[2];
   }
 
   android::procinfo::ProcessInfo target_info;
diff --git a/debuggerd/handler/debuggerd_handler.cpp b/debuggerd/handler/debuggerd_handler.cpp
index a5de83a..b1dc01a 100644
--- a/debuggerd/handler/debuggerd_handler.cpp
+++ b/debuggerd/handler/debuggerd_handler.cpp
@@ -81,7 +81,7 @@
   va_start(args, fmt);
 
   char buf[4096];
-  vsnprintf(buf, sizeof(buf), fmt, args);
+  __libc_format_buffer_va_list(buf, sizeof(buf), fmt, args);
   fatal("%s: %s", buf, strerror(err));
 }
 
@@ -256,8 +256,9 @@
 
     char main_tid[10];
     char pseudothread_tid[10];
-    snprintf(main_tid, sizeof(main_tid), "%d", thread_info->crashing_tid);
-    snprintf(pseudothread_tid, sizeof(pseudothread_tid), "%d", thread_info->pseudothread_tid);
+    __libc_format_buffer(main_tid, sizeof(main_tid), "%d", thread_info->crashing_tid);
+    __libc_format_buffer(pseudothread_tid, sizeof(pseudothread_tid), "%d", thread_info->pseudothread_tid);
+
     execl(CRASH_DUMP_PATH, CRASH_DUMP_NAME, main_tid, pseudothread_tid, nullptr);
 
     fatal_errno("exec failed");