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List:       freebsd-hackers
Subject:    Two threads call vsyslog(), two threads in death embrace.
From:       Zaphod Beeblebrox <zbeeble () gmail ! com>
Date:       2016-11-23 3:22:11
Message-ID: CACpH0Mcz3PkzXNEjspP=KTpOXU1TqPgKvHLDSdpSZtgKr93D6g () mail ! gmail ! com
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I'm just agitating... but bug 214482 seems to detail that two threads
calling vsyslog() lead to a death embrace.  I'm just posting to get some
wider eyes or opinions on that.

In the bug, I've kill -QUIT the mpd5 daemon and looked at it's corpse.  I
had to kill -QUIT because the daemon is completely unresponsive.  Regular
kills don't do anything.

In the mpd5 binary, there are 3 threads.  One is sitting in poll() and the
other two are stuck asking for a lock inside the vsyslog() library function.
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