diff options
| author | Meng Li <Meng.Li@windriver.com> | 2021-02-26 05:17:37 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-05-14 11:52:18 +0300 |
| commit | b9e569ae1da3a113b3acee8703c94777fd20938a (patch) | |
| tree | 639a48628377e516429b5c3bd2cf5fc17aadefaa | |
| parent | 89e2375bafbcf10280d923a4b6ce05a25c02cb8e (diff) | |
| download | linux-b9e569ae1da3a113b3acee8703c94777fd20938a.tar.xz | |
regmap: set debugfs_name to NULL after it is freed
[ Upstream commit e41a962f82e7afb5b1ee644f48ad0b3aee656268 ]
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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -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; |