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| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2024-04-25 19:52:12 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2024-04-26 11:11:00 +0200 |
| commit | 72c1afffa4c645fe0e0f1c03e5f34395ed65b5f4 (patch) | |
| tree | fd917dc4b67e8f3c5d8b100a2b16ef91a6bf62c7 /drivers | |
| parent | ed30a4a51bb196781c8058073ea720133a65596f (diff) | |
| download | linux-stable-72c1afffa4c645fe0e0f1c03e5f34395ed65b5f4.tar.gz linux-stable-72c1afffa4c645fe0e0f1c03e5f34395ed65b5f4.tar.bz2 linux-stable-72c1afffa4c645fe0e0f1c03e5f34395ed65b5f4.zip | |
thermal/debugfs: Free all thermal zone debug memory on zone removal
Because thermal_debug_tz_remove() does not free all memory allocated for
thermal zone diagnostics, some of that memory becomes unreachable after
freeing the thermal zone's struct thermal_debugfs object.
Address this by making thermal_debug_tz_remove() free all of the memory
in question.
Fixes: 7ef01f228c9f ("thermal/debugfs: Add thermal debugfs information for mitigation episodes")
Cc :6.8+ <stable@vger.kernel.org> # 6.8+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Lukasz Luba <lukasz.luba@arm.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/thermal/thermal_debugfs.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/thermal/thermal_debugfs.c b/drivers/thermal/thermal_debugfs.c index d78d54ae2605..8d66b3a96be1 100644 --- a/drivers/thermal/thermal_debugfs.c +++ b/drivers/thermal/thermal_debugfs.c @@ -826,15 +826,28 @@ void thermal_debug_tz_add(struct thermal_zone_device *tz) void thermal_debug_tz_remove(struct thermal_zone_device *tz) { struct thermal_debugfs *thermal_dbg = tz->debugfs; + struct tz_episode *tze, *tmp; + struct tz_debugfs *tz_dbg; + int *trips_crossed; if (!thermal_dbg) return; + tz_dbg = &thermal_dbg->tz_dbg; + mutex_lock(&thermal_dbg->lock); + trips_crossed = tz_dbg->trips_crossed; + + list_for_each_entry_safe(tze, tmp, &tz_dbg->tz_episodes, node) { + list_del(&tze->node); + kfree(tze); + } + tz->debugfs = NULL; mutex_unlock(&thermal_dbg->lock); thermal_debugfs_remove_id(thermal_dbg); + kfree(trips_crossed); } |