From: Yuchung Cheng <[email protected]> Date: Wed, 5 Dec 2018 14:38:38 -0800
> TCP loss probe timer may fire when the retranmission queue is empty but > has a non-zero tp->packets_out counter. tcp_send_loss_probe will call > tcp_rearm_rto which triggers NULL pointer reference by fetching the > retranmission queue head in its sub-routines. > > Add a more detailed warning to help catch the root cause of the inflight > accounting inconsistency. > > Reported-by: Rafael Tinoco <[email protected]> > Signed-off-by: Yuchung Cheng <[email protected]> > Signed-off-by: Eric Dumazet <[email protected]> > Signed-off-by: Neal Cardwell <[email protected]> Applied, thanks for working to diagnose this so quickly.
