linux-kernel - [PATCH v3] drm/amdgpu: Trigger a wedged event for ring reset

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-ID: <20250225010221.537059-1-andrealmeid@igalia.com>
Date: Mon, 24 Feb 2025 22:02:21 -0300
From: André Almeida <andrealmeid@...lia.com>
To: Alex Deucher <alexander.deucher@....com>,
	'Christian König' <christian.koenig@....com>,
	Xinhui Pan <Xinhui.Pan@....com>,
	amd-gfx@...ts.freedesktop.org,
	dri-devel@...ts.freedesktop.org,
	linux-kernel@...r.kernel.org,
	kernel-dev@...lia.com,
	siqueira@...lia.com
Cc: André Almeida <andrealmeid@...lia.com>
Subject: [PATCH v3] drm/amdgpu: Trigger a wedged event for ring reset

Instead of only triggering a wedged event for complete GPU resets,
trigger for ring resets. Regardless of the reset, it's useful for
userspace to know that it happened because the kernel will reject
further submissions from that app.

Signed-off-by: André Almeida <andrealmeid@...lia.com>
---
v3: do only for ring resets, no soft recoveries
v2: Keep the wedge event in amdgpu_device_gpu_recover() and add and
    extra check to avoid triggering two events.
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_job.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c
index 698e5799e542..760a720c842e 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c
@@ -150,6 +150,7 @@ static enum drm_gpu_sched_stat amdgpu_job_timedout(struct drm_sched_job *s_job)
 			if (amdgpu_ring_sched_ready(ring))
 				drm_sched_start(&ring->sched, 0);
 			dev_err(adev->dev, "Ring %s reset succeeded\n", ring->sched.name);
+			drm_dev_wedged_event(adev_to_drm(adev), DRM_WEDGE_RECOVERY_NONE);
 			goto exit;
 		}
 		dev_err(adev->dev, "Ring %s reset failure\n", ring->sched.name);
-- 
2.48.1