diff options
| author | ruanjinjie <ruanjinjie@huawei.com> | 2022-12-05 15:51:53 +0800 |
|---|---|---|
| committer | Sebastian Reichel <sebastian.reichel@collabora.com> | 2022-12-05 22:56:16 +0100 |
| commit | 104bb8a663451404a26331263ce5b96c34504049 (patch) | |
| tree | 7f585445a18bd8b84a55e373e783085ee3601d1c /drivers | |
| parent | 7e6fb67808ab5ceba73a6f45d0942e1e25ac56a7 (diff) | |
power: supply: fix null pointer dereferencing in power_supply_get_battery_info
when kmalloc() fail to allocate memory in kasprintf(), propname
will be NULL, strcmp() called by of_get_property() will cause
null pointer dereference.
So return ENOMEM if kasprintf() return NULL pointer.
Fixes: 3afb50d7125b ("power: supply: core: Add some helpers to use the battery OCV capacity table")
Signed-off-by: ruanjinjie <ruanjinjie@huawei.com>
Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/power/supply/power_supply_core.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/power/supply/power_supply_core.c b/drivers/power/supply/power_supply_core.c index 00cb19b46001..7c790c41e2fe 100644 --- a/drivers/power/supply/power_supply_core.c +++ b/drivers/power/supply/power_supply_core.c @@ -750,6 +750,11 @@ int power_supply_get_battery_info(struct power_supply *psy, int i, tab_len, size; propname = kasprintf(GFP_KERNEL, "ocv-capacity-table-%d", index); + if (!propname) { + power_supply_put_battery_info(psy, info); + err = -ENOMEM; + goto out_put_node; + } list = of_get_property(battery_np, propname, &size); if (!list || !size) { dev_err(&psy->dev, "failed to get %s\n", propname); |