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| author | Meng Li <Meng.Li@windriver.com> | 2021-02-26 03:17:37 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2021-03-10 13:20:54 +0100 |
| commit | e41a962f82e7afb5b1ee644f48ad0b3aee656268 (patch) | |
| tree | 60ed25d7448d8eca613f4bc99c4af181a24d4347 /drivers/base/regmap/regmap-debugfs.c | |
| parent | Linux 5.12-rc2 (diff) | |
| download | linux-e41a962f82e7afb5b1ee644f48ad0b3aee656268.tar.xz linux-e41a962f82e7afb5b1ee644f48ad0b3aee656268.zip | |
regmap: set debugfs_name to NULL after it is freed
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")
Signed-off-by: Meng Li <Meng.Li@windriver.com>
Link: https://lore.kernel.org/r/20210226021737.7690-1-Meng.Li@windriver.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/base/regmap/regmap-debugfs.c')
| -rw-r--r-- | drivers/base/regmap/regmap-debugfs.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/base/regmap/regmap-debugfs.c b/drivers/base/regmap/regmap-debugfs.c index ff2ee87987c7..211a335a608d 100644 --- a/drivers/base/regmap/regmap-debugfs.c +++ b/drivers/base/regmap/regmap-debugfs.c @@ -660,6 +660,7 @@ 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; |