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Bluetooth: Clear RFCOMM session timer when disconnecting last channel

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When the last RFCOMM data channel is closed, a timer is normally set
up to disconnect the control channel at a later time.  If the control
channel disconnect command is sent with the timer pending, the timer
needs to be cancelled.

If the timer is not cancelled in this situation, the reference
counting logic for the RFCOMM session does not work correctly when the
remote device closes the L2CAP connection.  The session is freed at
the wrong time, leading to a kernel panic.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
This commit is contained in:
Mat Martineau 2011-12-06 16:23:26 -08:00 committed by Gustavo F. Padovan
parent 36e999a83a
commit 79e654787c
1 changed files with 1 additions and 0 deletions
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1
net/bluetooth/rfcomm/core.c
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@ -1146,6 +1146,7 @@ static int rfcomm_recv_ua(struct rfcomm_session *s, u8 dlci)
if (list_empty(&s->dlcs)) {
s->state = BT_DISCONN;
rfcomm_send_disc(s, 0);
rfcomm_session_clear_timer(s);
}
break;