On Fri, 21 May 2010 09:30:05 -0700, Carl Johnson <ca...@peak.org> wrote: > Giorgos Keramidas <keram...@ceid.upatras.gr> writes: >> Does this lock-up happen if you leave the shell 'idle' for too long >> over an ssh session? There may be problems with stateful connection >> tracking between your terminal and the remote shell :-/ > > No, I don't think that could be the problem. I am just using ssh > between local machines and there is no firewall between them. It also > often seems to happen to a shell as I switch away from it to another > one. One suspicion is that something is sending a signal to the shell > as it switches, and bash sometimes doesn't handle that signal > properly. > > I also should have mentioned that I have been running bash as my > default shell for years under Linux and have never seen this problem > there. > > Thanks for the suggestion.
That's ok. If you can attach to the bash process with ktrace please try to grab a ktrace file from a deadlocked shell. We may be able to see why it gets deadlocked by running kdump(8) on the shell trace file. You can run a second shell under ktrace (and hope that the parent doesn't deadlock before the traced child shell), by running: bash$ ktrace -f bash.trace bash --login When you exit from the child shell you can dump ktrace(8) events from the bash.trace file with: bash$ kdump -f bash.trace > logfile 2>&1 Looking near the last records dumped in 'logfile' should be quite informative if the process is dead-locked or spinning around the same code over and over again. _______________________________________________ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"