On 6/17/20 9:39 AM, Kyle Evans wrote: > On Wed, Jun 17, 2020 at 10:21 AM Mateusz Guzik <mjgu...@gmail.com> wrote: >> >> pho@ reported triggering one of the asserts: >> https://people.freebsd.org/~pho/stress/log/mjguzik028.txt >> >> I did not have the time to properly investigate this yet and this does >> not reproduce for me. >> > > Ah, this is good to know that he's reproduced it. There's only so many > places that we touch these. I can't quite envision how, but the only > scenario this would seem to be possible in is doenterpgrp() -> > fixjobc(p, p->p_grp, 0) -> adjusts some child with a different process > group without actually changing it, orphans the group, then we manage > to finalize killjobc() on a freshly-orphaned process, which hasn't had > its p_pgrp nullified. > > I haven't yet traced it through completely enough to determine if > there's any way that can even happen.
I reproduced it three times yesterday in a head VM by exiting GDB while it was attached to a live process (which kills the process), something like: gdb /bin/ls start ^D Should be enough to reproduce. -- John Baldwin _______________________________________________ svn-src-all@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
