diff options
Diffstat (limited to 'vu_common.c')
| -rw-r--r-- | vu_common.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/vu_common.c b/vu_common.c index 9eea4f2..cefe5e2 100644 --- a/vu_common.c +++ b/vu_common.c @@ -36,11 +36,15 @@ int vu_packet_check_range(void *buf, const char *ptr, size_t len) struct vu_dev_region *dev_region; for (dev_region = buf; dev_region->mmap_addr; dev_region++) { - /* NOLINTNEXTLINE(performance-no-int-to-ptr) */ - char *m = (char *)(uintptr_t)dev_region->mmap_addr + + uintptr_t base_addr = dev_region->mmap_addr + dev_region->mmap_offset; + /* NOLINTNEXTLINE(performance-no-int-to-ptr) */ + const char *base = (const char *)base_addr; + + ASSERT(base_addr >= dev_region->mmap_addr); - if (m <= ptr && ptr + len <= m + dev_region->size) + if (len <= dev_region->size && base <= ptr && + (size_t)(ptr - base) <= dev_region->size - len) return 0; } |