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Fix asan false positive for mmap #12848

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Fix asan false positive for mmap #12848

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9 changes: 9 additions & 0 deletions Zend/zend_alloc.c
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Original file line number Diff line number Diff line change
Expand Up @@ -79,6 +79,9 @@
#include <limits.h>
#include <fcntl.h>
#include <errno.h>
#ifdef __SANITIZE_ADDRESS__
# include <sanitizer/asan_interface.h>
#endif

#ifndef _WIN32
# include <sys/mman.h>
Expand Down Expand Up @@ -724,6 +727,9 @@ static void *zend_mm_chunk_alloc_int(size_t size, size_t alignment)
if (zend_mm_use_huge_pages) {
zend_mm_hugepage(ptr, size);
}
#ifdef __SANITIZE_ADDRESS__
__asan_unpoison_memory_region(ptr, size);
#endif
return ptr;
} else {
size_t offset;
Expand Down Expand Up @@ -763,6 +769,9 @@ static void *zend_mm_chunk_alloc_int(size_t size, size_t alignment)
if (zend_mm_use_huge_pages) {
zend_mm_hugepage(ptr, size);
}
# ifdef __SANITIZE_ADDRESS__
__asan_unpoison_memory_region(ptr, size);
# endif
#endif
return ptr;
}
Expand Down