| Message ID | 20211015095855.3621089-1-yangyingliang@huawei.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | media: si470x-i2c: fix possible memory leak in si470x_i2c_probe() | expand |
diff --git a/drivers/media/radio/si470x/radio-si470x-i2c.c b/drivers/media/radio/si470x/radio-si470x-i2c.c index f491420d7b53..eb1b777245ee 100644 --- a/drivers/media/radio/si470x/radio-si470x-i2c.c +++ b/drivers/media/radio/si470x/radio-si470x-i2c.c @@ -368,7 +368,7 @@ static int si470x_i2c_probe(struct i2c_client *client) if (radio->hdl.error) { retval = radio->hdl.error; dev_err(&client->dev, "couldn't register control\n"); - goto err_dev; + goto err_all; } /* video device initialization */ @@ -463,7 +463,6 @@ static int si470x_i2c_probe(struct i2c_client *client) return 0; err_all: v4l2_ctrl_handler_free(&radio->hdl); -err_dev: v4l2_device_unregister(&radio->v4l2_dev); err_initial: return retval;
n the 'radio->hdl.error' error handling, ctrl handler allocated by v4l2_ctrl_new_std() does not released, and caused memory leak as follows: unreferenced object 0xffff888033d54200 (size 256): comm "i2c-si470x-19", pid 909, jiffies 4294914203 (age 8.072s) hex dump (first 32 bytes): e8 69 11 03 80 88 ff ff 00 46 d5 33 80 88 ff ff .i.......F.3.... 10 42 d5 33 80 88 ff ff 10 42 d5 33 80 88 ff ff .B.3.....B.3.... backtrace: [<00000000086bd4ed>] __kmalloc_node+0x1eb/0x360 [<00000000bdb68871>] kvmalloc_node+0x66/0x120 [<00000000fac74e4c>] v4l2_ctrl_new+0x7b9/0x1c60 [videodev] [<00000000693bf940>] v4l2_ctrl_new_std+0x19b/0x270 [videodev] [<00000000c0cb91bc>] si470x_i2c_probe+0x2d3/0x9a0 [radio_si470x_i2c] [<0000000056a6f01f>] i2c_device_probe+0x4d8/0xbe0 Fix the error handling path to avoid memory leak. Reported-by: Hulk Robot <hulkci@huawei.com> Fixes: 8c081b6f9a9b ("media: radio: Critical v4l2 registration...") Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> --- drivers/media/radio/si470x/radio-si470x-i2c.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)