put_device(&adap->dev) might free the memory pointed to by `adap`,
so we shouldn't read adap->owner after that.
Fix by saving module pointer before calling put_device().
Signed-off-by: Michał Mirosław <mirq-linux@xxxxxxxxxxxx>
---
drivers/i2c/i2c-core-base.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/i2c/i2c-core-base.c b/drivers/i2c/i2c-core-base.c
index 2c59dd748a49..5d694f8ce9ef 100644
--- a/drivers/i2c/i2c-core-base.c
+++ b/drivers/i2c/i2c-core-base.c
@@ -2464,11 +2464,14 @@ EXPORT_SYMBOL(i2c_get_adapter);
void i2c_put_adapter(struct i2c_adapter *adap)
{
+ struct module *owner;
+
if (!adap)
return;
+ owner = adap->owner;
put_device(&adap->dev);
- module_put(adap->owner);
+ module_put(owner);
}
EXPORT_SYMBOL(i2c_put_adapter);
--
2.30.2
