linux-kernel - [PATCH] drm/amdgpu: Fix missing unlocking in an error path in amdgpu_userq

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Message-ID: <366557fa7ca8173fd78c58336986ca56953369b9.1752087753.git.christophe.jaillet@wanadoo.fr>
Date: Wed,  9 Jul 2025 21:02:51 +0200
From: Christophe JAILLET <christophe.jaillet@...adoo.fr>
To: Alex Deucher <alexander.deucher@....com>,
	Christian König <christian.koenig@....com>,
	David Airlie <airlied@...il.com>,
	Simona Vetter <simona@...ll.ch>,
	Sunil Khatri <sunil.khatri@....com>
Cc: linux-kernel@...r.kernel.org,
	kernel-janitors@...r.kernel.org,
	Christophe JAILLET <christophe.jaillet@...adoo.fr>,
	amd-gfx@...ts.freedesktop.org,
	dri-devel@...ts.freedesktop.org
Subject: [PATCH] drm/amdgpu: Fix missing unlocking in an error path in amdgpu_userq_create()

If kasprintf() fails, some mutex still need to be released to avoid locking
issue, as already done in all other error handling path.

Fixes: c03ea34cbf88 ("drm/amdgpu: add support of debugfs for mqd information")
Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_userq.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_userq.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_userq.c
index 513bbc543f40..bce97318965c 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_userq.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_userq.c
@@ -520,8 +520,10 @@ amdgpu_userq_create(struct drm_file *filp, union drm_amdgpu_userq *args)
 	}
 
 	queue_name = kasprintf(GFP_KERNEL, "queue-%d", qid);
-	if (!queue_name)
-		return -ENOMEM;
+	if (!queue_name) {
+		r = -ENOMEM;
+		goto unlock;
+	}
 
 	/* Queue dentry per client to hold MQD information   */
 	queue->debugfs_queue = debugfs_create_dir(queue_name, filp->debugfs_client);
-- 
2.50.0