diff options
| -rw-r--r-- | drivers/gpu/drm/amd/amdkfd/kfd_svm.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c index 0900bb23349e..30ad10bbd47e 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c @@ -3473,7 +3473,13 @@ svm_range_is_valid(struct kfd_process *p, uint64_t start, uint64_t size) unsigned long start_unchg = start; start <<= PAGE_SHIFT; - end = start + (size << PAGE_SHIFT); + + if (size == 0) + return -EINVAL; + + if (check_add_overflow(start, size << PAGE_SHIFT, &end)) + return -EOVERFLOW; + do { vma = vma_lookup(p->mm, start); if (!vma || (vma->vm_flags & device_vma)) |