Date: Thu, 8 Jan 2009 22:19:43 -0500 From: Brian Fundakowski Feldman <green@FreeBSD.org> To: hackers@FreeBSD.org, jasone@FreeBSD.org Subject: threaded, forked, rethreaded processes will deadlock Message-ID: <20090109031942.GA2825@green.homeunix.org>
next in thread | raw e-mail | index | archive | help
--VbJkn9YxBvnuCH5J Content-Type: text/plain; charset=us-ascii Content-Disposition: inline It appears that the post-fork hooks for malloc(3) are somewhat broken such that when a threaded program forks, and then its child attempts to go threaded, it deadlocks because it already appears to have locks held. I am not familiar enough with the current libthr/libc/rtld-elf interaction that I've been able to fix it myself, unfortunately. I discovered this today upgrading my work box from 7.0 to 7.1, but I can easily reproduce it at home on a stale -CURRENT as well. Testing on an OS X box to make sure, the regression test does exit 0 there. Has anyone happened to have fixed this already locally? -- Brian Fundakowski Feldman \'[ FreeBSD ]''''''''''\ <> green@FreeBSD.org \ The Power to Serve! \ Opinions expressed are my own. \,,,,,,,,,,,,,,,,,,,,,,\ --VbJkn9YxBvnuCH5J--
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20090109031942.GA2825>