When iio_device_register_sysfs_group() returns failed,
iio_device_register_eventset() needs to free attrs array.
Otherwise, kmemleak would scan & report memory leak as below:
unreferenced object 0xffff88810a1cc3c0 (size 32):
comm "100-i2c-vcnl302", pid 728, jiffies 4295052307 (age 156.027s)
backtrace:
__kmalloc+0x46/0x1b0
iio_device_register_eventset at drivers/iio/industrialio-event.c:541
__iio_device_register at drivers/iio/industrialio-core.c:1959
__devm_iio_device_register at drivers/iio/industrialio-core.c:2040
Fixes: 32f171724e5c ("iio: core: rework iio device group creation")
Signed-off-by: Zeng Heng <zengheng4@xxxxxxxxxx>
---
drivers/iio/industrialio-event.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/iio/industrialio-event.c b/drivers/iio/industrialio-event.c
index 3d78da2531a9..727e2ef66aa4 100644
--- a/drivers/iio/industrialio-event.c
+++ b/drivers/iio/industrialio-event.c
@@ -556,7 +556,7 @@ int iio_device_register_eventset(struct iio_dev *indio_dev)
ret = iio_device_register_sysfs_group(indio_dev, &ev_int->group);
if (ret)
- goto error_free_setup_event_lines;
+ goto error_free_group_attrs;
ev_int->ioctl_handler.ioctl = iio_event_ioctl;
iio_device_ioctl_handler_register(&iio_dev_opaque->indio_dev,
@@ -564,6 +564,8 @@ int iio_device_register_eventset(struct iio_dev *indio_dev)
return 0;
+error_free_group_attrs:
+ kfree(ev_int->group.attrs);
error_free_setup_event_lines:
iio_free_chan_devattr_list(&ev_int->dev_attr_list);
kfree(ev_int);
--
2.25.1
