Yuchung Cheng <ych...@google.com> writes: > On Thu, Oct 15, 2020 at 1:22 PM Neal Cardwell <ncardw...@google.com> wrote: >> >> On Thu, Oct 15, 2020 at 2:31 PM Apollon Oikonomopoulos <apoi...@dmesg.gr> >> wrote: >> > >> > Hi, >> > >> > I'm trying to debug a (possible) TCP issue we have been encountering >> > sporadically during the past couple of years. Currently we're running >> > 4.9.144, but we've been observing this since at least 3.16. >> > >> > Tl;DR: I believe we are seeing a case where snd_wl1 fails to be properly >> > updated, leading to inability to recover from a TCP persist state and >> > would appreciate some help debugging this. >> >> Thanks for the detailed report and diagnosis. I think we may need a >> fix something like the following patch below.
That was fast, thank you! >> >> Eric/Yuchung/Soheil, what do you think? > wow hard to believe how old this bug can be. The patch looks good but > can Apollon verify this patch fix the issue? Sure, I can give it a try and let the systems do their thing for a couple of days, which should be enough to see if it's fixed. Neal, would it be possible to re-send the patch as an attachment? The inlined version does not apply cleanly due to linewrapping and whitespace changes and, although I can re-type it, I would prefer to test the exact same thing that would be merged. Regards, Apollon
