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| author | Guangshuo Li <lgs201920130244@gmail.com> | 2026-04-01 10:45:35 +0800 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2026-04-01 16:08:15 +0200 |
| commit | 6dcf9d0064ce2f3e3dfe5755f98b93abe6a98e1e (patch) | |
| tree | 89755d7d7f8965440f48e1f0208b8921b375bad9 /fs/devfs/git@git.tavy.me:linux.git | |
| parent | 7aaa8047eafd0bd628065b15757d9b48c5f9c07d (diff) | |
cpufreq: governor: fix double free in cpufreq_dbs_governor_init() error path
When kobject_init_and_add() fails, cpufreq_dbs_governor_init() calls
kobject_put(&dbs_data->attr_set.kobj).
The kobject release callback cpufreq_dbs_data_release() calls
gov->exit(dbs_data) and kfree(dbs_data), but the current error path
then calls gov->exit(dbs_data) and kfree(dbs_data) again, causing a
double free.
Keep the direct kfree(dbs_data) for the gov->init() failure path, but
after kobject_init_and_add() has been called, let kobject_put() handle
the cleanup through cpufreq_dbs_data_release().
Fixes: 4ebe36c94aed ("cpufreq: Fix kobject memleak")
Signed-off-by: Guangshuo Li <lgs201920130244@gmail.com>
Reviewed-by: Zhongqiu Han <zhongqiu.han@oss.qualcomm.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Cc: All applicable <stable@vger.kernel.org>
Link: https://patch.msgid.link/20260401024535.1395801-1-lgs201920130244@gmail.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'fs/devfs/git@git.tavy.me:linux.git')
0 files changed, 0 insertions, 0 deletions
