8253926: Use extra_size correctly in anon_mmap_aligned

kstefanj · kstefanj · commit f686a380f375 · 2020-10-02T11:45:24.000Z
Reviewed-by: shade, kbarrett, tschatzl, stefank
diff --git a/src/hotspot/os/linux/os_linux.cpp b/src/hotspot/os/linux/os_linux.cpp
@@ -3667,7 +3667,7 @@ static char* anon_mmap_aligned(char* req_addr, size_t bytes, size_t alignment) {
     extra_size += alignment;
   }
 
-  char* start = anon_mmap(req_addr, bytes);
+  char* start = anon_mmap(req_addr, extra_size);
   if (start != NULL) {
     if (req_addr != NULL) {
       if (start != req_addr) {

Original file line number	Diff line number	Diff line change
`@@ -3667,7 +3667,7 @@ static char* anon_mmap_aligned(char* req_addr, size_t bytes, size_t alignment) {`
`3667`	`3667`	`extra_size += alignment;`
`3668`	`3668`	`}`
`3669`	`3669`
`3670`		`- char* start = anon_mmap(req_addr, bytes);`
	`3670`	`+ char* start = anon_mmap(req_addr, extra_size);`
`3671`	`3671`	`if (start != NULL) {`
`3672`	`3672`	`if (req_addr != NULL) {`
`3673`	`3673`	`if (start != req_addr) {`