Date: Mon, 10 May 2010 22:53:32 +0200 From: Attilio Rao <attilio@freebsd.org> To: Peter Jeremy <peterjeremy@acm.org> Cc: current@freebsd.org Subject: Re: LOR: ufs vs bufwait Message-ID: <u2h3bbf2fe11005101353k493f3ca3v7c1216e840820c67@mail.gmail.com> In-Reply-To: <20100510061057.GA93038@server.vk2pj.dyndns.org> References: <20100508102005.GB1867@elmar.spoerlein.net> <20100510061057.GA93038@server.vk2pj.dyndns.org>
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2010/5/10 Peter Jeremy <peterjeremy@acm.org>: > On 2010-May-08 12:20:05 +0200, Ulrich Sp=C3=B6rlein <uqs@spoerlein.net> w= rote: >>This LOR also is not yet listed on the LOR page, so I guess it's rather >>new. I do use SUJ. >> >>lock order reversal: >> 1st 0xc48388d8 ufs (ufs) @ /usr/src/sys/kern/vfs_lookup.c:502 >> 2nd 0xec0fe304 bufwait (bufwait) @ /usr/src/sys/ufs/ffs/ffs_softdep.c:11= 363 >> 3rd 0xc49e56b8 ufs (ufs) @ /usr/src/sys/kern/vfs_subr.c:2091 > > I'm seeing exactly the same LOR (and subsequent deadlock) on a recent > -current without SUJ. I think this LOR was reported since a long time. The deadlock may be new and someway related to the vm_page_lock work (if not SUJ). Attilio --=20 Peace can only be achieved by understanding - A. Einstein
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