Re: file descriptor leak in 5.2-RC

From: Jonathan Lennox <lennox_at_cs.columbia.edu>
Date: Thu, 18 Dec 2003 14:42:18 -0500
Michal Mertl writes:
> For several weeks now I see my -current (now RELENG_5_2 to help test the
> release) machine seems to be leaking file descriptors. After some time all
> files (up to kern.maxfiles) are consumed.

Do you have any statically-linked programs that use pthreads?  There's a FD
leak in gethostbyname(3) in multithreaded programs (actually, in the uthread
wrapper for kevent(2), but gethostbyname(3) is the most common reason you'd
see it) which was fixed in -CURRENT for programs linked with libc_r.so, but
not for those linked with libc_r.a.

See PR bin/58687 <http://www.freebsd.org/cgi/query-pr.cgi?pr=bin/58687>.
This has a patch available.

-- 
Jonathan Lennox
lennox at cs dot columbia dot edu
Received on Thu Dec 18 2003 - 10:42:46 UTC

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