[PATCH v3 3/3] amdgpu: don't report an error if the process was killed

[Mikulas Patocka <mpatocka@redhat.com>]

If the process was killed by a fatal signal, amdgpu_hmm_register could
return -EINTR (the -EINTR comes from mm_take_all_locks).

Don't log the error in this case, because no error happened.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>

---
 drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c |    9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

Index: mm/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
===================================================================
--- mm.orig/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c	2026-01-04 21:19:14.000000000 +0100
+++ mm/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c	2026-01-04 21:19:14.000000000 +0100
@@ -1070,8 +1070,13 @@ static int init_user_pages(struct kgd_me
 
 	ret = amdgpu_hmm_register(bo, user_addr);
 	if (ret) {
-		pr_err("%s: Failed to register MMU notifier: %d\n",
-		       __func__, ret);
+		/*
+		 * If we got EINTR because the process was killed, don't report
+		 * it, because no error happened.
+		 */
+		if (!(fatal_signal_pending(current) && ret == -EINTR))
+			pr_err("%s: Failed to register MMU notifier: %d\n",
+			       __func__, ret);
 		goto out;
 	}