From 632528507c4cc1e7ba414bfaccfe6125bb1b0625 Mon Sep 17 00:00:00 2001
From: Simon Rettberg
Date: Tue, 21 Jul 2020 17:34:14 +0200
Subject: [SERVER] Fix: NULL pointer access in saveLoadAllCacheMaps()

Entries in _images array might ne NULL
---
 src/server/image.c | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'src')

diff --git a/src/server/image.c b/src/server/image.c
index 4893b7e..efece62 100644
--- a/src/server/image.c
+++ b/src/server/image.c
@@ -1874,6 +1874,8 @@ static void* saveLoadAllCacheMaps(void* nix UNUSED)
 	mutex_lock( &imageListLock );
 	for ( int i = 0; i < _num_images; ++i ) {
 		dnbd3_image_t * const image = _images[i];
+		if ( image == NULL )
+			continue;
 		image->users++;
 		mutex_unlock( &imageListLock );
 		const bool fromUpstream = isImageFromUpstream( image );
-- 
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