Unverified Commit 6e2a5b5e authored by openeuler-ci-bot's avatar openeuler-ci-bot Committed by Gitee
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!8497 Bluetooth: l2cap: fix null-ptr-deref in l2cap_chan_timeout 

Merge Pull Request from: @ci-robot 
 
PR sync from: Zhang Changzhong <zhangchangzhong@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/J5WXGHBH5EEK4VJSTN36FBNJU62PKE5B/ 
 
https://gitee.com/src-openeuler/kernel/issues/I9OZAK 
 
Link:https://gitee.com/openeuler/kernel/pulls/8497

 

Reviewed-by: default avatarYue Haibing <yuehaibing@huawei.com>
Signed-off-by: default avatarJialin Zhang <zhangjialin11@huawei.com>
parents 623051c7 96024257

net/bluetooth/l2cap_core.c

+3 −0
Original line number Diff line number Diff line
@@ -435,6 +435,9 @@ static void l2cap_chan_timeout(struct work_struct *work) 


	BT_DBG("chan %p state %s", chan, state_to_string(chan->state));



	if (!conn)

		return;



	mutex_lock(&conn->chan_lock);

	/* __set_chan_timer() calls l2cap_chan_hold(chan) while scheduling

	 * this work. No need to call l2cap_chan_hold(chan) here again.