* [PATCH] drm/debugfs: Fix dentry reference count leak in drm_debugfs_remove_files
@ 2025-08-30 11:19 Miaoqian Lin
0 siblings, 0 replies; only message in thread
From: Miaoqian Lin @ 2025-08-30 11:19 UTC (permalink / raw)
To: Maarten Lankhorst, Maxime Ripard, Thomas Zimmermann, David Airlie,
Simona Vetter, Christian König, Andi Shyti, dri-devel,
linux-kernel
Cc: linmq006
The function uses debugfs_lookup to find dentries,
but did not call dput() after use, causing a reference count leak.
Add dput(dent) after debugfs_remove to properly release the reference.
Fixes: 8e455145d8f1 ("drm/debugfs: rework drm_debugfs_create_files implementation v2")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
---
drivers/gpu/drm/drm_debugfs.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/gpu/drm/drm_debugfs.c b/drivers/gpu/drm/drm_debugfs.c
index 365cf337529f..ad05487a6949 100644
--- a/drivers/gpu/drm/drm_debugfs.c
+++ b/drivers/gpu/drm/drm_debugfs.c
@@ -285,6 +285,7 @@ int drm_debugfs_remove_files(const struct drm_info_list *files, int count,
drmm_kfree(minor->dev, d_inode(dent)->i_private);
debugfs_remove(dent);
+ dput(dent);
}
return 0;
}
--
2.35.1
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