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executor: fix fuchsia syz_mmap

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Dmitry Vyukov 2017-10-16 14:58:24 +02:00
parent 4a4ad885ab
commit f6cbb2f891
1 changed files with 9 additions and 7 deletions
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16
executor/common_fuchsia.h
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@ -151,13 +151,15 @@ long syz_mmap(size_t addr, size_t size)
zx_status_t status = zx_object_get_info(root, ZX_INFO_VMAR, &info, sizeof(info), 0, 0);
if (status != ZX_OK)
error("zx_object_get_info(ZX_INFO_VMAR) failed: %d", status);
uintptr_t res = 0;
zx_handle_t mapping = 0;
status = zx_vmar_allocate(root, addr - info.base, size,
ZX_VM_FLAG_SPECIFIC | ZX_VM_FLAG_CAN_MAP_READ | ZX_VM_FLAG_CAN_MAP_WRITE,
&mapping, &res);
if (status == ZX_OK && addr != res)
error("zx_vmar_allocate allocated wrong address: %p, want %p", (void*)res, (void*)addr);
zx_handle_t vmo;
status = zx_vmo_create(size, 0, &vmo);
if (status != ZX_OK)
return status;
uintptr_t mapped_addr;
status = zx_vmar_map(root, addr - info.base, vmo, 0, size,
ZX_VM_FLAG_SPECIFIC_OVERWRITE | ZX_VM_FLAG_PERM_READ |
ZX_VM_FLAG_PERM_WRITE | ZX_VM_FLAG_PERM_EXECUTE,
&mapped_addr);
return status;
}
#endif