linux-kernel - [PATCH] drm/amdkfd: fix a memory leak in device_queue_manager

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Message-Id: <20260104131532.3978895-1-lihaoxiang@isrc.iscas.ac.cn>
Date: Sun,  4 Jan 2026 21:15:32 +0800
From: Haoxiang Li <lihaoxiang@...c.iscas.ac.cn>
To: Felix.Kuehling@....com,
	alexander.deucher@....com,
	christian.koenig@....com,
	airlied@...il.com,
	simona@...ll.ch
Cc: amd-gfx@...ts.freedesktop.org,
	dri-devel@...ts.freedesktop.org,
	linux-kernel@...r.kernel.org,
	Haoxiang Li <lihaoxiang@...c.iscas.ac.cn>
Subject: [PATCH] drm/amdkfd: fix a memory leak in device_queue_manager_init()

If dqm->ops.initialize() fails, add deallocate_hiq_sdma_mqd()
to release the memory allocated by allocate_hiq_sdma_mqd().

Signed-off-by: Haoxiang Li <lihaoxiang@...c.iscas.ac.cn>
---
 drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
index d7a2e7178ea9..58a8d90c1533 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
@@ -3042,6 +3042,9 @@ struct device_queue_manager *device_queue_manager_init(struct kfd_node *dev)
 		return dqm;
 	}
 
+	if (!dev->kfd->shared_resources.enable_mes)
+		deallocate_hiq_sdma_mqd(dev, &dqm->hiq_sdma_mqd);
+
 out_free:
 	kfree(dqm);
 	return NULL;
-- 
2.25.1