From: Zheng Wang zyytlz.wz@163.com

stable inclusion from stable-v5.10.177 commit 2b346876b93168541a45551d5f9abd1d26102e89 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I7781Q CVE: CVE-2023-33288

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...

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[ Upstream commit 47c29d69212911f50bdcdd0564b5999a559010d4 ]

In bq24190_probe, &bdi->input_current_limit_work is bound with bq24190_input_current_limit_work. When external power changed, it will call bq24190_charger_external_power_changed to start the work.

If we remove the module which will call bq24190_remove to make cleanup, there may be a unfinished work. The possible sequence is as follows:

CPU0 CPUc1

|bq24190_input_current_limit_work bq24190_remove | power_supply_unregister | device_unregister | power_supply_dev_release| kfree(psy) | | | power_supply_get_property_from_supplier | //use

Fix it by finishing the work before cleanup in the bq24190_remove

Fixes: 97774672573a ("power_supply: Initialize changed_work before calling device_add") Signed-off-by: Zheng Wang zyytlz.wz@163.com Signed-off-by: Sebastian Reichel sebastian.reichel@collabora.com Signed-off-by: Sasha Levin sashal@kernel.org

Conflicts: drivers/power/supply/bq24190_charger.c

Signed-off-by: Zhao Wenhui zhaowenhui8@huawei.com --- drivers/power/supply/bq24190_charger.c | 1 + 1 file changed, 1 insertion(+)

diff --git a/drivers/power/supply/bq24190_charger.c b/drivers/power/supply/bq24190_charger.c index 8c3c378dce0d..9a93060e5b5f 100644 --- a/drivers/power/supply/bq24190_charger.c +++ b/drivers/power/supply/bq24190_charger.c @@ -1849,6 +1849,7 @@ static int bq24190_remove(struct i2c_client *client) struct bq24190_dev_info *bdi = i2c_get_clientdata(client); int error;

+ cancel_delayed_work_sync(&bdi->input_current_limit_work); error = pm_runtime_get_sync(bdi->dev); if (error < 0) { dev_warn(bdi->dev, "pm_runtime_get failed: %i\n", error);