diff options
| -rw-r--r-- | util/mmap-alloc.c | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/util/mmap-alloc.c b/util/mmap-alloc.c index d713a72ddc..2f55f5e94f 100644 --- a/util/mmap-alloc.c +++ b/util/mmap-alloc.c @@ -84,22 +84,20 @@ void *qemu_ram_mmap(int fd, size_t size, size_t align, bool shared) return MAP_FAILED; } - ptr += offset; - total -= offset; - if (offset > 0) { - munmap(ptr - offset, offset); + munmap(ptr, offset); } /* * Leave a single PROT_NONE page allocated after the RAM block, to serve as * a guard page guarding against potential buffer overflows. */ + total -= offset; if (total > size + getpagesize()) { - munmap(ptr + size + getpagesize(), total - size - getpagesize()); + munmap(ptr1 + size + getpagesize(), total - size - getpagesize()); } - return ptr; + return ptr1; } void qemu_ram_munmap(void *ptr, size_t size) |