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authorThomas Gleixner <tglx@linutronix.de>2011-03-24 20:16:42 +0100
committerGustavo F. Padovan <padovan@profusion.mobi>2011-03-31 14:25:26 -0300
commit6f5ef998b7b0b1bf1471654bf6176a5419197128 (patch)
treeec29866ef5b3447acda2667ec7bdd91283db15e9 /net/bluetooth
parent34bd0273b631742e8d929c80e90cb7782105d8da (diff)
Bluetooth: Fix warning with hci_cmd_timer
After we made debugobjects working again, we got the following: WARNING: at lib/debugobjects.c:262 debug_print_object+0x8e/0xb0() Hardware name: System Product Name ODEBUG: free active (active state 0) object type: timer_list hint: hci_cmd_timer+0x0/0x60 Pid: 2125, comm: dmsetup Tainted: G W 2.6.38-06707-gc62b389 #110375 Call Trace: [<ffffffff8104700a>] warn_slowpath_common+0x7a/0xb0 [<ffffffff810470b6>] warn_slowpath_fmt+0x46/0x50 [<ffffffff812d3a5e>] debug_print_object+0x8e/0xb0 [<ffffffff81bd8810>] ? hci_cmd_timer+0x0/0x60 [<ffffffff812d4685>] debug_check_no_obj_freed+0x125/0x230 [<ffffffff810f1063>] ? check_object+0xb3/0x2b0 [<ffffffff810f3630>] kfree+0x150/0x190 [<ffffffff81be4d06>] ? bt_host_release+0x16/0x20 [<ffffffff81be4d06>] bt_host_release+0x16/0x20 [<ffffffff813a1907>] device_release+0x27/0xa0 [<ffffffff812c519c>] kobject_release+0x4c/0xa0 [<ffffffff812c5150>] ? kobject_release+0x0/0xa0 [<ffffffff812c61f6>] kref_put+0x36/0x70 [<ffffffff812c4d37>] kobject_put+0x27/0x60 [<ffffffff813a21f7>] put_device+0x17/0x20 [<ffffffff81bda4f9>] hci_free_dev+0x29/0x30 [<ffffffff81928be6>] vhci_release+0x36/0x70 [<ffffffff810fb366>] fput+0xd6/0x1f0 [<ffffffff810f8fe6>] filp_close+0x66/0x90 [<ffffffff810f90a9>] sys_close+0x99/0xf0 [<ffffffff81d4c96b>] system_call_fastpath+0x16/0x1b That timer was introduced with commit 6bd32326cda(Bluetooth: Use proper timer for hci command timout) Timer seems to be running when the thing is closed. Removing the timer unconditionally fixes the problem. And yes, it needs to be fixed before the HCI_UP check. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Diffstat (limited to 'net/bluetooth')
-rw-r--r--net/bluetooth/hci_core.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index 92b48e257b89..2216620ff296 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -587,6 +587,9 @@ static int hci_dev_do_close(struct hci_dev *hdev)
hci_req_cancel(hdev, ENODEV);
hci_req_lock(hdev);
+ /* Stop timer, it might be running */
+ del_timer_sync(&hdev->cmd_timer);
+
if (!test_and_clear_bit(HCI_UP, &hdev->flags)) {
hci_req_unlock(hdev);
return 0;
@@ -626,7 +629,6 @@ static int hci_dev_do_close(struct hci_dev *hdev)
/* Drop last sent command */
if (hdev->sent_cmd) {
- del_timer_sync(&hdev->cmd_timer);
kfree_skb(hdev->sent_cmd);
hdev->sent_cmd = NULL;
}