Date: Mon, 29 Nov 2010 16:51:50 -0800 From: Artem Belevich <fbsdlist@src.cx> To: Andriy Gapon <avg@freebsd.org> Cc: freebsd-hackers@freebsd.org, "Robert N. M. Watson" <rwatson@freebsd.org> Subject: Re: dtrace/cyclic deadlock Message-ID: <AANLkTimpveRPuK6AF4ep7mqFn5ZWOdjmiAfz1tnXoC30@mail.gmail.com> In-Reply-To: <4CF02B23.7050508@freebsd.org> References: <4CEB6039.2040700@freebsd.org> <4CEBC11F.9000402@freebsd.org> <4CEFBC20.3090407@freebsd.org> <AANLkTikgGde4SEZazN%2BUUvJPkpVEMyh7zJ7=c0VEpaMG@mail.gmail.com> <4CF02B23.7050508@freebsd.org>
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On Fri, Nov 26, 2010 at 1:48 PM, Andriy Gapon <avg@freebsd.org> wrote: > on 26/11/2010 21:10 Artem Belevich said the following: >> On Fri, Nov 26, 2010 at 5:54 AM, Andriy Gapon <avg@freebsd.org> wrote: >>>> I will appreciate reviews and testing. >>> >>> Should I wait for any pending comments? >>> Otherwise I am confident enough in the patch to commit it. >> >> Some time back I used to have reproducible crash related to dtrace/cyclic: >> http://unix.derkeiler.com/Mailing-Lists/FreeBSD/current/2008-10/msg00449.html >> >> If you can wait until Tuesday, I'll try to check if the problem is >> still reproducible and whether your patch fixes it. > > Artem, > > thanks a lot! > I am sure in no hurry and I will appreciate your testing! > > -- > Andriy Gapon > Andriy, I was able to reproduce the deadlock with hotkernel during buildworld after only few attempts. After applying your patch on top of stable/8 r215749 the deadlock appears to be gone. --Artem
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