From: Sunil Khatri <sunil.khatri@amd.com>
Date: Fri, 24 Oct 2025 04:44:56 +0000 (+0530)
Subject: drm/amdkfd: add missing return value check for range
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=7bb02a34c2ba69bbe0329fc3049c795f7ba66b9a;p=thirdparty%2Fkernel%2Flinux.git

drm/amdkfd: add missing return value check for range

amdgpu_hmm_range_alloc could fails in case of low
memory condition and hence we should have a check
for the return value.

Signed-off-by: Sunil Khatri <sunil.khatri@amd.com>
Reviewed-by: Shirish S <shirish.s@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
index f041643308ca4..7f0ab73e23967 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
@@ -1738,6 +1738,11 @@ static int svm_range_validate_and_map(struct mm_struct *mm,
 
 			WRITE_ONCE(p->svms.faulting_task, current);
 			range = amdgpu_hmm_range_alloc(NULL);
+			if (unlikely(!range)) {
+				r = -ENOMEM;
+				goto free_ctx;
+			}
+
 			r = amdgpu_hmm_range_get_pages(&prange->notifier, addr, npages,
 						       readonly, owner,
 						       range);