diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/sandbox/cpu/os.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/arch/sandbox/cpu/os.c b/arch/sandbox/cpu/os.c index 5839932b00..a1a982af2d 100644 --- a/arch/sandbox/cpu/os.c +++ b/arch/sandbox/cpu/os.c @@ -143,14 +143,15 @@ void os_tty_raw(int fd, bool allow_sigs) void *os_malloc(size_t length) { struct os_mem_hdr *hdr; + int page_size = getpagesize(); - hdr = mmap(NULL, length + sizeof(*hdr), PROT_READ | PROT_WRITE, - MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); + hdr = mmap(NULL, length + page_size, + PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); if (hdr == MAP_FAILED) return NULL; hdr->length = length; - return hdr + 1; + return (void *)hdr + page_size; } void os_free(void *ptr) |