On Thu, 16 Sep 2021 18:09:05 +0900 Takashi Yano wrote: > I encountered a problem with current git head. > > To reproduce the problem: > 1) Make the CPU hight load state (100% load for all cores). > 2) Run '/bin/echo AAAAAAAAAAA 2>&1 |cat' several times. > Sometimes, no output is shown. > > This seems to be a race issue between multiple pipe writers. > Now I am investigating the problem. I would like to propose three additional patches, two are for the issue above (0001 and 0003), and the other one (0002) fixes the error handling. Please have a look at patches attached. -- Takashi Yano