Subject: Re: Crash when receiving FIN-ACK in TCP_FIN_WAIT1 state

From: Subash Abhinov Kasiviswanathan <[email-masked]>
Date: Mon, 28 Oct 2019 19:36:36 -0600

>> I've queued up a build which logs calls to tcp_write_queue_purge and
>> clears tp->highest_sack and tp->sacked_out. I will let you know how
>> it fares by end of week.
> 
> OK, thanks. That should be a useful data point.

I haven't seen the crash in the testing so far.
Looks like clearing these values seems to help.

-- 
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project