Date: Sun, 05 Apr 2009 14:27:41 +0400 From: Boris Samorodov <bsam@ipt.ru> To: "O. Hartmann" <ohartman@mail.zedat.fu-berlin.de> Cc: Thierry Herbelot <thierry.herbelot@free.fr>, freebsd-current@freebsd.org, peter@FreeBSD.org Subject: Re: Stuck kernel while cleaning up the object tree Message-ID: <82316530@h30.sp.ipt.ru> In-Reply-To: <49D88435.30900@mail.zedat.fu-berlin.de> (O. Hartmann's message of "Sun\, 05 Apr 2009 12\:13\:09 %2B0200") References: <200904041050.28932.thierry.herbelot@free.fr> <200904041151.18209.thierry.herbelot@free.fr> <10969763@bb.ipt.ru> <49D88435.30900@mail.zedat.fu-berlin.de>
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On Sun, 05 Apr 2009 12:13:09 +0200 O. Hartmann wrote: > Boris Samorodov wrote: > > On Sat, 4 Apr 2009 11:51:17 +0200 Thierry Herbelot wrote: > > > >> Le Saturday 04 April 2009, Thierry Herbelot a écrit : > >> > >>> Hello, > >>> > >>> On recent -current machines, I have seen a common pattern, with the machine > >>> being frozen (still responsive to pings, though) in the initial phases of > >>> the buildworld procedure : > >>> > >>> example freeze : > >>> -------------------------------------------------------------- > >>> > >>> > >>>>>> stage 2.1: cleaning up the object tree > >>>>>> > >>> -------------------------------------------------------------- > >>> cd /usr/src; MAKEOBJDIRPREFIX=/usr/obj MACHINE_ARCH=i386 MACHINE=i386 > >>> CPUTYPE= GROFF_BIN_PATH=/usr/obj/usr/src/tmp/legacy/usr/bin > >>> GROFF_FONT_PATH=/usr/obj/usr/src/tmp/legacy/usr/share/groff_font > >>> GROFF_TMAC_PATH=/usr/obj/usr/src/tmp/legacy/usr/share/tmac > >>> _SHLIBDIRPREFIX=/usr/obj/usr/src/tmp VERSION="FreeBSD 8.0-CURRENT i386 > >>> 800074" INSTALL="sh /usr/src/tools/install.sh" > >>> PATH=/usr/obj/usr/src/tmp/legacy/usr/sbin:/usr/obj/usr/src/tmp/legacy/usr/b > >>> in:/usr/obj/usr/src/tmp/legacy/usr/games:/usr/obj/usr/src/tmp/usr/sbin:/usr/ > >>> obj/usr/src/tmp/usr/bin:/usr/obj/usr/src/tmp/usr/games:/sbin:/bin:/usr/sbin: > >>> /usr/bin NO_CTF=1 make -f Makefile.inc1 DESTDIR=/usr/obj/usr/src/tmp > >>> par-cleandir ===> share/info (cleandir) > >>> ===> lib (cleandir) > >>> ===> lib/csu/i386-elf (cleandir) > >>> [type ^T in the console] > >>> load: 0.00 cmd: sh 24587 [*Name Cache] 0.01u 0.00s 0% 1584k > >>> > >>> The other machines also froze while "cleaning up the object tree". > >>> > >>> The machines are configured with serial consoles : I have no kernel stack > >>> backtrace to aid in pinpointing the cause of this freeze. > >>> > >>> Cheers > >>> > >>> TfH > >>> > > > > > >> With a bit more investigation : > >> > > > > > >> on a separate ssh session, top is still live and shows processes stuck as : > >> 24523 root 1 76 0 1888K 764K *Name 1 0:00 0.00% make > >> > > > > > >> on still another machine, running Witnesses (all other machines run with a > >> lean GENERIC, with most of the debuging features commented out) : > >> System call __getcwd returning with the following locks held: > >> shared rw Name Cache (Name Cache) r = 0 (0xc0ee7e1c) locked > >> @ /usr/src/sys/kerne/vfs_cache.c:974 > >> > > > > This is definitely related to: > > SVN rev 190655 on 2009-04-02 21:16:20Z by peter > > (peter@ CCed) > > > > > >> panic: witness_warn > >> cpuid = 0 > >> KDB: enter: panic > Is there a fix in sight soon? I do have this error/fault/lockup now on > ALL FreeBSD 8.0-CURRENT/amd64 machines I have. I've reverted SVN rev 190655 and it's OK for half a day now. WBR -- Boris Samorodov (bsam) Research Engineer, http://www.ipt.ru Telephone & Internet SP FreeBSD committer, http://www.FreeBSD.org The Power To Servehelp
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