Date: Sat, 4 Apr 2009 11:51:17 +0200 From: Thierry Herbelot <thierry.herbelot@free.fr> To: freebsd-current@freebsd.org Subject: Re: Stuck kernel while cleaning up the object tree Message-ID: <200904041151.18209.thierry.herbelot@free.fr> In-Reply-To: <200904041050.28932.thierry.herbelot@free.fr> References: <200904041050.28932.thierry.herbelot@free.fr>
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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 panic: witness_warn cpuid = 0 KDB: enter: panic TfH > _______________________________________________ > freebsd-current@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-current > To unsubscribe, send any mail to "freebsd-current-unsubscribe@freebsd.org"
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