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-rw-r--r--src/pkg/runtime/linux/mem.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/pkg/runtime/linux/mem.c b/src/pkg/runtime/linux/mem.c
index 38ca7e4a0..ad0fac6d3 100644
--- a/src/pkg/runtime/linux/mem.c
+++ b/src/pkg/runtime/linux/mem.c
@@ -91,6 +91,9 @@ runtime·SysMap(void *v, uintptr n)
if(p != v && addrspace_free(v, n)) {
// On some systems, mmap ignores v without
// MAP_FIXED, so retry if the address space is free.
+ if(p > (void*)4096) {
+ runtime·munmap(p, n);
+ }
p = runtime·mmap(v, n, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_ANON|MAP_FIXED|MAP_PRIVATE, -1, 0);
}
if(p == (void*)ENOMEM)