From 6d3b4a0f2ef7f85cccc2b01db39d7eea2c10dd23 Mon Sep 17 00:00:00 2001
From: nia <nia@NetBSD.org>
Date: Mon, 9 Aug 2021 14:11:56 +0200
Subject: [PATCH] netbsd: handle repeated ENOMEM from HW_IOSTATS safely

---
 netbsd/Platform.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/netbsd/Platform.c b/netbsd/Platform.c
index c0783518..9d57b149 100644
--- a/netbsd/Platform.c
+++ b/netbsd/Platform.c
@@ -347,6 +347,8 @@ bool Platform_getDiskIO(DiskIOData* data) {
 
       iostats = xRealloc(iostats, size);
 
+      errno = 0;
+
       if (sysctl(mib, __arraycount(mib), iostats, &size, NULL, 0) == 0)
          break;
 
@@ -354,6 +356,9 @@ bool Platform_getDiskIO(DiskIOData* data) {
          CRT_fatalError("Unable to get disk IO statistics");
    }
 
+   if (errno == ENOMEM)
+      CRT_fatalError("Unable to get disk IO statistics");
+
    uint64_t bytesReadSum = 0;
    uint64_t bytesWriteSum = 0;
    uint64_t busyTimeSum = 0;