diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdkfd/kfd_svm.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdkfd/kfd_svm.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c index c7b364e4a287..e883731c3f8f 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c @@ -3026,6 +3026,14 @@ svm_range_get_attr(struct kfd_process *p, uint64_t start, uint64_t size, pr_debug("svms 0x%p [0x%llx 0x%llx] nattr 0x%x\n", &p->svms, start, start + size - 1, nattr); + /* Flush pending deferred work to avoid racing with deferred actions from + * previous memory map changes (e.g. munmap). Concurrent memory map changes + * can still race with get_attr because we don't hold the mmap lock. But that + * would be a race condition in the application anyway, and undefined + * behaviour is acceptable in that case. + */ + flush_work(&p->svms.deferred_list_work); + mmap_read_lock(mm); if (!svm_range_is_valid(mm, start, size)) { pr_debug("invalid range\n"); |