Mail Archives: cygwin/2023/09/08/17:35:38

Dale Lobb via Cygwin <cygwin AT cygwin DOT com> · Fri, 8 Sep 2023 21:35:16 +0000

> -----Original Message-----
> From: Jose Isaias Cabrera <jicman AT outlook DOT com>
> Sent: Wednesday, September 6, 2023 4:04 PM
> To: Jose Isaias Cabrera <jicman AT outlook DOT com>; Dale Lobb
> <Dale DOT Lobb AT bryanhealth DOT org>; tryandbuy via Cygwin <cygwin AT cygwin DOT com>
> Subject: EXTERNAL SENDER: RE: Fork errors
>
> On September 6, 2023 5:01 PM, Jose Isaias Cabrera expressed:
> >
> >
> > On September 6, 2023 2:52 PM, Dale Lobb expressed:
> > >
> > > Since upgrading to the latest version of Cygwin a few weeks ago on a
> > > server I manage, I've been experiencing an issue with fork errors.
> > > The Cygwin installation had not been updated for almost a year before
> > > that.
> > >
> > > The issue happens every time a script is invoked that purges files
> > > from some temporary directories, but never in the same place in the
> > > script.  The script uses multiple calls to find -exec to remove files
> > > over 10 days old from the directories.  Here is a typical error.
> > > Sometime the issue will assert after just a  few tens of files
> > > deleted, sometimes after hundreds or thousands of files have been
> > > deleted:
> > >
> > > removed '/cygdrive/d/.../obfuscated.datedata.txt'
> > > 1 [main] find 20066 dofork: child -1 - forked process 4068 died
> > > unexpectedly, retry 0, exit code 0xC0000142, errno 11
> > > find: cannot fork: Resource temporarily unavailable
> > >
> > > It also happens randomly at other times.  I've seen the bash shell
> > > itself fail on the invocation of a mintty.  I've seen it happen on all
> > > sorts of interactive commands entered from bash.
> > >
> > > Today, as a test, I updated all the installed Cygwin components.
> > > One of the post installation scripts failed, so I re-exec'd it:
> > >
> > > $ ./postinstall/0p_update-info-dir.dash
> > > Rebuilding info directory
> > > 2 [main] dash 2059 dofork: child -1 - forked process 7676 died
> > > unexpectedly, retry 0, exit code 0xC0000142, errno 11
> > > ./postinstall/0p_update-info-dir.dash: 22: Cannot fork
> > >
> > > A second re-exec then worked fine.
> > >
> > > I've tried reinstalling all the components, and I've tried rebaseall.
> > >
> > > Is there anything else I can try, or troubleshooting steps to take?
> > >
> > > Best Regards,
> >
> > Take a look at this:
>
> Also, there are a bunch of hits on duckduckgo:
>
> https://duckduckgo.com/?q=++++++++++find%3A+cannot+fork%3A+Resource+temporarily+unavailable+cygwin&ia=web
>
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  Yep, read through most of those already.  Many are from a very long time
ago, when Cygwin was still 32 bit and seem to have little utility in the 64 bit
world where ASLR is on in Windows by default for 64 bit images.

  Thanks, though!

Best Regards,

Dale Lobb

________________________________

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To:	Jose Isaias Cabrera <jicman AT outlook DOT com>,
	tryandbuy via Cygwin
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Subject:	RE: EXTERNAL SENDER: RE: Fork errors
Thread-Topic:	EXTERNAL SENDER: RE: Fork errors
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Date:	Fri, 8 Sep 2023 21:35:16 +0000
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From:	Dale Lobb via Cygwin <cygwin AT cygwin DOT com>
Reply-To:	Dale Lobb <Dale DOT Lobb AT bryanhealth DOT org>
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