Make sure to free the custom input node name on disconnect.
Cc: stable@xxxxxxxxxxxxxxx # v4.18+
Fixes: c554bb045511 ("HID: input: append a suffix matching the application")
Signed-off-by: Stefan Agner <stefan@xxxxxxxx>
---
Found with kmemleak, after unplugging a Logitech Unifying receiver:
unreferenced object 0xc2345b80 (size 64):
comm "kworker/0:1", pid 20, jiffies 4294955181 (age 320.740s)
hex dump (first 32 bytes):
4c 6f 67 69 74 65 63 68 20 55 53 42 20 52 65 63 Logitech USB Rec
65 69 76 65 72 20 53 79 73 74 65 6d 20 43 6f 6e eiver System Con
backtrace:
[<8fec5a71>] __kmalloc_track_caller+0x1dc/0x300
[<5b926275>] kvasprintf+0x60/0xcc
[<21fc360f>] kasprintf+0x38/0x54
[<3b6ce9f0>] hidinput_connect+0x23a8/0x4c60
[<deaab707>] hid_connect+0x30c/0x38c
[<5a28f7c9>] hid_hw_start+0x44/0x64
[<267d70e8>] hid_generic_probe+0x34/0x38
[<d68c31b1>] hid_device_probe+0xdc/0x13c
[<09414e91>] really_probe+0x1d8/0x2c4
[<f9d7157f>] driver_probe_device+0x68/0x184
[<1def17c8>] __device_attach_driver+0xa0/0xd4
[<d3b2081b>] bus_for_each_drv+0x60/0xc0
[<379d02f8>] __device_attach+0xdc/0x144
[<7026ace5>] device_initial_probe+0x14/0x18
[<44527d01>] bus_probe_device+0x90/0x98
[<cf58bf2f>] device_add+0x424/0x62c
drivers/hid/hid-input.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/hid/hid-input.c b/drivers/hid/hid-input.c
index 4e94ea3e280a..ac201817a2dd 100644
--- a/drivers/hid/hid-input.c
+++ b/drivers/hid/hid-input.c
@@ -1815,6 +1815,7 @@ void hidinput_disconnect(struct hid_device *hid)
input_unregister_device(hidinput->input);
else
input_free_device(hidinput->input);
+ kfree(hidinput->name);
kfree(hidinput);
}
--
2.18.0
