Date: Fri, 21 May 2010 09:30:05 -0700 From: Carl Johnson <carlj@peak.org> To: freebsd-questions@freebsd.org Subject: Re: Bash lockups Message-ID: <87pr0przea.fsf@cjlinux.localnet> In-Reply-To: <878w7d7qbb.fsf@kobe.laptop> (Giorgos Keramidas's message of "Fri\, 21 May 2010 08\:54\:16 %2B0300") References: <877hmzbi1f.fsf@cjlinux.localnet> <878w7d7qbb.fsf@kobe.laptop>
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Giorgos Keramidas <keramida@ceid.upatras.gr> writes: > On Wed, 19 May 2010 16:14:52 -0700, Carl Johnson <carlj@peak.org> wrote: >> I have been experimenting with FreeBSD for a while, and I consistently >> get bash lockups at irregular intervals when it is otherwise idle. By >> lockup, I mean that it stops responding to the keyboard and uses 100% >> CPU. It will sometimes go for days with no problems, but I had two >> yesterday, and other today. They have occurred on test systems >> running in VirtualBox and on a real computer, both i386 and amd64 >> images, and a mixture of 7.1, 7.3 and 8.0. They usually seem to >> happen when I am switching tabs in konsole or switching shells in >> screen, but other times I think they happen when I am not even using >> the system. The only thing I have found I can do is to do a kill -9 >> and start a new shell. > > 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. -- Carl Johnson carlj@peak.org
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