diff options
| author | Yang Yingliang | 2022-05-11 10:06:05 +0800 |
|---|---|---|
| committer | Daniel Lezcano | 2022-05-19 12:11:53 +0200 |
| commit | 98a160e898c0f4a979af9de3ab48b4b1d42d1dbb (patch) | |
| tree | 7b43262c6a5dd28c8cdf52f448212a0bd005fc5f /drivers/thermal | |
| parent | 30988d3b31b1e8972f202e93574978927b5c9d06 (diff) | |
thermal/core: Fix memory leak in __thermal_cooling_device_register()
I got memory leak as follows when doing fault injection test:
unreferenced object 0xffff888010080000 (size 264312):
comm "182", pid 102533, jiffies 4296434960 (age 10.100s)
hex dump (first 32 bytes):
00 00 00 00 ad 4e ad de ff ff ff ff 00 00 00 00 .....N..........
ff ff ff ff ff ff ff ff 40 7f 1f b9 ff ff ff ff ........@.......
backtrace:
[<0000000038b2f4fc>] kmalloc_order_trace+0x1d/0x110 mm/slab_common.c:969
[<00000000ebcb8da5>] __kmalloc+0x373/0x420 include/linux/slab.h:510
[<0000000084137f13>] thermal_cooling_device_setup_sysfs+0x15d/0x2d0 include/linux/slab.h:586
[<00000000352b8755>] __thermal_cooling_device_register+0x332/0xa60 drivers/thermal/thermal_core.c:927
[<00000000fb9f331b>] devm_thermal_of_cooling_device_register+0x6b/0xf0 drivers/thermal/thermal_core.c:1041
[<000000009b8012d2>] max6650_probe.cold+0x557/0x6aa drivers/hwmon/max6650.c:211
[<00000000da0b7e04>] i2c_device_probe+0x472/0xac0 drivers/i2c/i2c-core-base.c:561
If device_register() fails, thermal_cooling_device_destroy_sysfs() need be called
to free the memory allocated in thermal_cooling_device_setup_sysfs().
Fixes: 8ea229511e06 ("thermal: Add cooling device's statistics in sysfs")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20220511020605.3096734-1-yangyingliang@huawei.com
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Diffstat (limited to 'drivers/thermal')
| -rw-r--r-- | drivers/thermal/thermal_core.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c index 82654dc8382b..cdc0552e8c42 100644 --- a/drivers/thermal/thermal_core.c +++ b/drivers/thermal/thermal_core.c @@ -947,6 +947,7 @@ __thermal_cooling_device_register(struct device_node *np, return cdev; out_kfree_type: + thermal_cooling_device_destroy_sysfs(cdev); kfree(cdev->type); put_device(&cdev->device); cdev = NULL; |