Re: [PATCH net] rxrpc: Fix race between incoming ACK parser and retransmitter

2020-06-11 Thread David Miller
From: David Howells Date: Thu, 11 Jun 2020 21:57:00 +0100 > There's a race between the retransmission code and the received ACK parser. > The problem is that the retransmission loop has to drop the lock under > which it is iterating through the transmission buffer in order to transmit > a packet,

[PATCH net] rxrpc: Fix race between incoming ACK parser and retransmitter

2020-06-11 Thread David Howells
There's a race between the retransmission code and the received ACK parser. The problem is that the retransmission loop has to drop the lock under which it is iterating through the transmission buffer in order to transmit a packet, but whilst the lock is dropped, the ACK parser can crank the Tx win