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Commit 01877e30 authored by Chris Lew's avatar Chris Lew
Browse files

net: qrtr: Use lock while looking up tx flow 



Flow structs are freed under the qrtr_tx_lock. Make sure all accesses
to the flow radix tree are protected by the qrtr_tx_lock.

Change-Id: I1574a09079e80ca9df255eaf9a8b3e5368b26305
Signed-off-by: default avatarChris Lew <clew@codeaurora.org>
parent 01dafb76

net/qrtr/qrtr.c

+4 −2
Original line number Diff line number Diff line
@@ -400,11 +400,13 @@ static void qrtr_tx_resume(struct qrtr_node *node, struct sk_buff *skb) 
	src.sq_port = le32_to_cpu(pkt.client.port);

	key = (u64)src.sq_node << 32 | src.sq_port;



	mutex_lock(&node->qrtr_tx_lock);

	flow = radix_tree_lookup(&node->qrtr_tx_flow, key);

	if (!flow)

	if (!flow) {

		mutex_unlock(&node->qrtr_tx_lock);

		return;

	}



	mutex_lock(&node->qrtr_tx_lock);

	atomic_set(&flow->pending, 0);

	wake_up_interruptible_all(&node->resume_tx);