linux emulation file descriptor leakage -current?

[Doug Ambrisko]

Alexander Leidinger writes:
| Quoting Bakul Shah <bakul at bitblocks.com> (from Tue, 16 May 2006  
| 01:04:36 -0700):
| 
| >> > The following code from linux_stats.c looked dodgy to me so I
| >> > reverted /sys/{i386/linux,compat/{linux,linprocfs}} to about
| >> > one month old state and the problem disappears.  skype still
| >> > opens about 296 files but no more.
| >>
| >> Can you please do a binary search for the commit which breaks this? Go
| >> to a 2 week old current and see if the problem is still there. If it
| >> isn't, the problem appeared in the last two weeks, so update to an one
| >> week old current (and so on). I think only the kernel needs to be
| >> updated.
| >
| > Yes, only the kernel needs to be updated.  Look at rev 1.80
| > of /sys/compat/linux/linux_stats.c and related changes
| > (commited on 2006/05/05 16:10:45).  I am reasonably certain
| > this is the culprit.  To avoid looking at alpha support
| > removal changes (which have nothing to do with this) do
| >
| >     cd /sys/compat/linux
| >     cvs diff -D'1 month ago' -D'1 week ago'
| >
| > This is the only change in that time period.  Perhaps the
| > commit (sponsored by IronPort Systems) needs to be vetted.
| > Removing this code has fixed the problem for me.  If you
| > have an alternative fix I'll be happy to try it.
| 
| Doug, the problem we see is a file descriptor leak with several  
| applications. For example start acroread and try to open a file by  
| browsing for it (instead of specifying it at the command line).  
| Another possibility is to start skype and login. Can you please have a  
| look at it?

Should be fixed with sys/compat/linux/linux_stats.c version 1.83.
It's fixed in my testing:
	/compat/linux/bin/sh
	fstat | grep bash
Let me know if there are still some issues.  I'm behind in my FreeBSD
mail and working on some other stuff.

Thanks,

Doug A.