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Date:      Wed, 7 Dec 2011 20:20:30 +0200
From:      Kostik Belousov <kostikbel@gmail.com>
To:        Dmitry Morozovsky <marck@rinet.ru>
Cc:        freebsd-stable@freebsd.org
Subject:   Re: tmpfs deadlock on stable/9
Message-ID:  <20111207182030.GI50300@deviant.kiev.zoral.com.ua>
In-Reply-To: <alpine.BSF.2.00.1112072150380.16929@woozle.rinet.ru>
References:  <alpine.BSF.2.00.1112071348290.44987@woozle.rinet.ru> <20111207133035.GF50300@deviant.kiev.zoral.com.ua> <alpine.BSF.2.00.1112072150380.16929@woozle.rinet.ru>

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On Wed, Dec 07, 2011 at 09:59:32PM +0400, Dmitry Morozovsky wrote:
> On Wed, 7 Dec 2011, Kostik Belousov wrote:
>=20
> > > I have ports tinderbox runnign on stable/9-amd64, with working direct=
ories on=20
> > > tmpfs. I have two consecutive tmpfs deadlocks like
> > >=20
> > > root@beaver:/usr/local/tb/scripts# ps t2
> > >   PID  TT  STAT    TIME COMMAND
> > >  2337   2  Is   0:00.04 /bin/tcsh =20
> > >  3079   2  I    0:00.01 sudo -sE  =20
> > >  3260   2  I    0:00.02 /bin/tcsh =20
> > > 20309   2  I+   0:00.06 /bin/sh ./tc tinderbuild -nullfs -norebuild -=
b=20
> > > 9-i386-RiNet
> > > 27035   2  S+   0:00.13 make PACKAGES=3D/usr/local/tb/packages/9-i386=
-RiNet -k=20
> > > -j1 all
> > > 46470   2  I+   0:00.00 sh -ev
> > > 46471   2  I+   0:00.01 /bin/sh /usr/local/tb/scripts/lib/portbuild=
=20
> > > 9-i386-RiNet 9-i386 RiNet -nullfs gsm-1.0.13.tbz /usr/ports/audio/gsm
> > > 46677   2  I+   0:00.00 /bin/sh /buildscript /usr/ports/audio/gsm 2
> > > 46766   2  I+   0:00.00 /pnohang 7200 /tmp/make.log4 gsm-1.0.13 make =
build
> > > 46767   2  I+   0:00.02 make build
> > > 46768   2  I+   0:00.00 /pnohang 7200 /tmp/make.log4 gsm-1.0.13 make =
build
> > > 46789   2  I+   0:00.00 [sh]
> > > 46790   2  D+   0:00.01 make -f Makefile -j4 all
> > > 46918   2  I+   0:00.00 sh -ev
> > > 46926   2  I+   0:00.00 sh -ev
> > > 46928   2  Z+   0:00.09 <defunct>
> > > 46938   2  D+   0:00.00 mv gsm_create.o ./src/gsm_create.o
> > > 46940   2  D+   0:00.00 mv gsm_print.o ./src/gsm_print.o
> > >=20
> > > (this is parallel build, last 2 rm's are deadlocked on tmpfs)=20
> > >=20
> > > what kind of additional info should I send? I have debugging turned o=
n in=20
> > > kernel, if it's needed.
> > http://www.freebsd.org/doc/en_US.ISO8859-1/books/developers-handbook/ke=
rneldebug-deadlocks.html
> >=20
> > No, I do not promise to look into it.
>=20
> It is available at http://bsd.woozle.net/tmpfs-lock-20111207.txt (~260k)
>=20
> BTW, at least some of the debugger commands referenced (show locks, show=
=20
> alllocks) are no longer exist
This means that you do not have witness in your kernel.
Look at the reference I pointed you once more.

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