Kmemleak shows the following kind of memory leak for ath9k_htc:
unreferenced object 0xffff88004542f200 (size 512):
comm "khubd", pid 977, jiffies 4317632516 (age 16855.868s)
hex dump (first 32 bytes):
00 00 00 0a 00 00 00 00 00 02 01 05 00 00 02 01 ................
00 00 00 00 00 00 81 38 02 00 00 00 33 33 30 30 .......8....3300
backtrace:
[<ffffffff81122d77>] create_object+0x127/0x2b0
[<ffffffff813580b1>] kmemleak_alloc+0x21/0x50
[<ffffffff8111f383>] __kmalloc_node_track_caller+0x153/0x220
[<ffffffff812b703e>] __alloc_skb+0x7e/0x170
[<ffffffffa0833331>] htc_connect_service+0x111/0x200 [ath9k_htc]
[<ffffffffa083bb90>] ath9k_init_htc_services+0x240/0x2b0 [ath9k_htc]
[<ffffffffa083c1ca>] ath9k_htc_probe_device+0xea/0xa50 [ath9k_htc]
[<ffffffffa08338dc>] ath9k_htc_hw_init+0xc/0x30 [ath9k_htc]
[<ffffffffa08356ba>] ath9k_hif_usb_probe+0x1ca/0x420 [ath9k_htc]
[<ffffffffa00a2279>] usb_probe_interface+0xb9/0x160 [usbcore]
[<ffffffff81279379>] driver_probe_device+0x89/0x1a0
[<ffffffff8127958b>] __device_attach+0x4b/0x60
[<ffffffff81278024>] bus_for_each_drv+0x64/0x90
[<ffffffff81279231>] device_attach+0xa1/0xb0
[<ffffffff81278a25>] bus_probe_device+0x25/0x40
[<ffffffff81276d2a>] device_add+0x55a/0x630
The device is a TP-Link TL-WN722N. The output from lsusb is "ID 0cf3:9271
Atheros Communications, Inc. AR9271 802.11n".
Signed-off-by: Larry Finger <Larry.Finger@xxxxxxxxxxxx>
Cc: Stable <stable@xxxxxxxxxx>
---
This patch certainly fixes a leak. I'm testing to see if there are
others.
How far back should the patch go for stable kernels?
Larry
---
Index: wireless-testing-new/drivers/net/wireless/ath/ath9k/htc_hst.c
===================================================================
--- wireless-testing-new.orig/drivers/net/wireless/ath/ath9k/htc_hst.c
+++ wireless-testing-new/drivers/net/wireless/ath/ath9k/htc_hst.c
@@ -276,7 +276,8 @@ int htc_connect_service(struct htc_targe
if (!time_left) {
dev_err(target->dev, "Service connection timeout for: %d\n",
service_connreq->service_id);
- return -ETIMEDOUT;
+ ret = -ETIMEDOUT;
+ goto err;
}
*conn_rsp_epid = target->conn_rsp_epid;
--
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