[PATCH] fix uint64 underflow
According to previous statement,
'free_mem' is less than 'needed_mem'.
So, the subtraction 'free_mem - needed_mem' is negative,
and will raise uint64 underflow.
Signed-off-by: Dmitry Frolov <frolov(a)swemel.ru>
---
src/libxl/libxl_domain.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/src/libxl/libxl_domain.c b/src/libxl/libxl_domain.c
index 6c167df63e..36be042971 100644
--- a/src/libxl/libxl_domain.c
+++ b/src/libxl/libxl_domain.c
@@ -940,7 +940,7 @@ libxlDomainFreeMem(libxl_ctx *ctx, libxl_domain_config *d_config)
if (free_mem >= needed_mem)
return 0;
- target_mem = free_mem - needed_mem;
+ target_mem = needed_mem - free_mem;
if (libxlSetMemoryTargetWrapper(ctx, 0, target_mem,
/* relative */ 1, 0) < 0)
goto error;
--
2.34.1