Messages in this thread Patch in this message | | | From | Meng.Li@windrive ... | Subject | [PATCH] driver: regmap: set debugfs_name to NULL after it is freed | Date | Fri, 26 Feb 2021 10:17:37 +0800 |
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From: Meng Li <Meng.Li@windriver.com>
There is a upstream commit cffa4b2122f5("regmap:debugfs: Fix a memory leak when calling regmap_attach_dev") that adds a if condition when create name for debugfs_name. With below function invoking logical, debugfs_name is freed in regmap_debugfs_exit(), but it is not created again because of the if condition introduced by above commit. regmap_reinit_cache() regmap_debugfs_exit() ... regmap_debugfs_init() So, set debugfs_name to NULL after it is freed.
Fixes: cffa4b2122f5("regmap: debugfs: Fix a memory leak when calling regmap_attach_dev") Cc: stable@vger.kernel.org Signed-off-by: Meng Li <Meng.Li@windriver.com> --- drivers/base/regmap/regmap-debugfs.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/base/regmap/regmap-debugfs.c b/drivers/base/regmap/regmap-debugfs.c index 398991381e9a..4f2ff1b2b450 100644 --- a/drivers/base/regmap/regmap-debugfs.c +++ b/drivers/base/regmap/regmap-debugfs.c @@ -661,6 +661,7 @@ void regmap_debugfs_exit(struct regmap *map) regmap_debugfs_free_dump_cache(map); mutex_unlock(&map->cache_lock); kfree(map->debugfs_name); + map->debugfs_name = NULL; } else { struct regmap_debugfs_node *node, *tmp; -- 2.17.1
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