patch (Re: ^Z during port build and hang?)

YONETANI Tomokazu qhwt+dfly at
Sat Jun 25 03:28:47 PDT 2005

On Fri, Jun 24, 2005 at 11:15:28AM -0700, Matthew Dillon wrote:
>     Try this patch.  There is a race during fork() where a ^Z can cause a
>     newly forked process to stop as part of the fork trampoline.  That code
>     path was not setting up the passive release function and the process
>     retained its 'current process' designation when it went to sleep.  The
>     result?  No other user processes can run.
>     The thread priority was also not being properly set, possibly giving
>     programs that fork a lot (e.g. a make/build) higher priority then the
>     rest of the system.

Thanks! So far with this patch, I haven't been able to reproduce it no
matter how hardly I tried to do so.  By the way, do you have any idea
why it only happens with ttyv? and not with other types of terminals?


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