On Wed, Jul 20, 2016 at 2:20 PM, Jeff Law <l...@redhat.com> wrote: > On 07/20/2016 03:09 PM, Andrew Pinski wrote: >> >> On Wed, Jul 20, 2016 at 2:02 PM, Andrew Pinski <pins...@gmail.com> wrote: >>> >>> On Wed, Jul 20, 2016 at 1:32 PM, Jeff Law <l...@redhat.com> wrote: >>>> >>>> On 07/20/2016 02:21 PM, Segher Boessenkool wrote: >>>>> >>>>> >>>>> On Wed, Jul 20, 2016 at 12:48:09PM +0530, Senthil Kumar Selvaraj wrote: >>>>>>> >>>>>>> >>>>>>> I see this for some of the larger C frontend tests with lots of >>>>>>> expected >>>>>>> errors/warnings as well. >>>>> >>>>> >>>>> >>>>> I also see this for tests with small output, but it happens more >>>>> often for tests with big output. >>>>> >>>>>> Are you guys getting this everytime or is it sporadic? >>>>> >>>>> >>>>> >>>>> Not always, but usually. It seems related to how busy the system is, >>>>> but that could be my imagination. >>>>> >>>>> It usually happens for a bunch of tests at the same time. >>>>> >>>>> Not always is the output just cut short: some random characters >>>>> are inserted sometimes (in the individual log files, the consolidated >>>>> log file does not have those; it looks like pointers). >>>> >>>> >>>> Hmm, there was a kernel bug a while back which had similar behavior. >>>> What >>>> kernel version are you running? >>> >>> >>> I am running with 4.2. Let me find the old email and see I should >>> include it in our tree (I thought we did). >> >> >> Found it. It looks like it was not put in yet: >> https://bugzilla.kernel.org/show_bug.cgi?id=96311 >> >> I know Jakub asked about a year ago saying it was not 4.1-rc1 yet. >> Can someone look to see if it even made it into newer kernels? > > I know "a" fix is in modern Fedora kernels and I thought it came from > upstream. > > Jeff >
commit 1a48632ffed61352a7810ce089dc5a8bcd505a60 Author: Peter Hurley <pe...@hurleysoftware.com> Date: Mon Apr 13 13:24:34 2015 -0400 pty: Fix input race when closing A read() from a pty master may mistakenly indicate EOF (errno == -EIO) after the pty slave has closed, even though input data remains to be read. For example, -- H.J.