Date: Wed, 4 Feb 2009 20:03:33 -0800 From: Kip Macy <kmacy@freebsd.org> To: Kai Mosebach <kai@freshx.de> Cc: freebsd-xen@freebsd.org Subject: Re: Instable 32bit domU on 64bit dom0 (w/Xen 3.3.1) Message-ID: <3c1674c90902042003jb24eef0hec2960c270b54e31@mail.gmail.com> In-Reply-To: <C5AF2A81.39A1%kai@freshx.de> References: <3c1674c90902022136t48eef4faic3cc091082b68432@mail.gmail.com> <C5AF2A81.39A1%kai@freshx.de>
next in thread | previous in thread | raw e-mail | index | archive | help
Please run with only 1 vcpu for the next couple of weeks. Thanks, Kip On Wed, Feb 4, 2009 at 2:20 AM, Kai Mosebach <kai@freshx.de> wrote: > Hi Kip, > > After rebuilding the kernel (which improved stability by roughly 80%) and > rebuilding world (which improved stability by another 19% ;) the userland > seems to be much more stable now! Kernel wise I hit the bug you described > below at every bootup/shutdown and the first hit of a key on the console, > but the system keeps running afterwards... > > Booting with 2 CPUs is still ending up in > > Spanic: blockable sleep lock (sleep mutex) XCONS LOCK @ > dev/xen/console/console.c:290 > cpuid = 1 > KDB: enter: panic > [thread pid 11 tid 100003 ] > Stopped at kdb_enter+0x3a: movl $0,kdb_why > > Anyway, thanks for your effort! > > Kai > > On 2/3/09 6:36 AM, "Kip Macy" <kmacy@freebsd.org> wrote: > >> Hi Kai, >> >> This should be fixed by r188042. Interrupts need to be disabled on >> entry to the page fault handler or we risk being preempted prior to >> reading cr2 (the faulting address). >> >> There is still another fundamental stability bug whereby timer >> interrupts appear to sometimes be left disabled until another >> interrupt (console, network, disk) comes in at which point they're >> re-enabled. You may or may not hit that, I only have one configuration >> where I'm able to reproduce that issue. >> >> Cheers, >> Kip >> >> >> On Thu, Jan 29, 2009 at 7:34 AM, Kai Mosebach <xen@komadev.de> wrote: >>> Hi, >>> >>> i recently got my first FreeBSD 8 domU working and i am quite happy to see >>> that there is eventually progress on the important Xen topic for FreeBSD. >>> Since this domU as a svn -head checkout from 23.01.09 still segfaults here >>> and there i startet to rebuild the whole world with debugging symbols in the >>> hope that the backtraces give more info's on where to find bugs. >>> >>> Here are the first results from several core files which hang around in the >>> system after a world build and i hope the developers here can make more sense >>> out of it than me. >>> >>> If you need further dumps/traces or have some advises how to go on from here, >>> please let me know! >>> >>> Best Kai >>> >>> /usr/obj/usr/src/make.core >>> >>> Program terminated with signal 11, Segmentation fault. >>> #0 0x0804da01 in Cmd_Exec ( >>> cmd=0x2812df00 "/usr/bin/env -i PATH=/sbin:/bin:/usr/sbin:/usr/bin make >>> __MAKE_CONF=/etc/make.conf -f /dev/null -V MAKEOBJDIRPREFIX dummy", >>> error=0xbf7fdb18) at /usr/src/usr.bin/make/job.c:2713 >>> 2713 if ((ps.child_pid = vfork()) == -1) { >>> (gdb) bt >>> #0 0x0804da01 in Cmd_Exec ( >>> cmd=0x2812df00 "/usr/bin/env -i PATH=/sbin:/bin:/usr/sbin:/usr/bin make >>> __MAKE_CONF=/etc/make.conf -f /dev/null -V MAKEOBJDIRPREFIX dummy", >>> error=0xbf7fdb18) at /usr/src/usr.bin/make/job.c:2713 >>> #1 0x080544ed in Parse_DoVar (line=0x28128b00 "_MAKEOBJDIRPREFIX", >>> ctxt=0x2810e200) at /usr/src/usr.bin/make/parse.c:1520 >>> #2 0x08055a1a in Parse_File (name=0xbf7fdbf8 "/usr/src/Makefile", >>> stream=0x80a4960) at /usr/src/usr.bin/make/parse.c:2457 >>> #3 0x08051e68 in ReadMakefile (p=Variable "p" is not available. >>> ) at /usr/src/usr.bin/make/main.c:323 >>> #4 0x08051f24 in TryReadMakefile (p=0x8094744 "Makefile") >>> at /usr/src/usr.bin/make/main.c:342 >>> #5 0x080527c3 in main (argc=1, argv=0xbf7feddc) >>> at /usr/src/usr.bin/make/main.c:1209 >>> (gdb) >>> >>> >>> >>> /usr/src/sbin/atacontrol/sh.core >>> >>> Core was generated by `sh'. >>> Program terminated with signal 11, Segmentation fault. >>> Reading symbols from /lib/libedit.so.6...done. >>> Loaded symbols for /lib/libedit.so.6 >>> Reading symbols from /lib/libncurses.so.7...done. >>> Loaded symbols for /lib/libncurses.so.7 >>> Reading symbols from /lib/libc.so.7...done. >>> Loaded symbols for /lib/libc.so.7 >>> Reading symbols from /libexec/ld-elf.so.1...done. >>> Loaded symbols for /libexec/ld-elf.so.1 >>> #0 0x080555e6 in forkshell (jp=0x2830c0c0, n=0x28304d94, mode=0) at >>> /usr/src/bin/sh/jobs.c:746 >>> 746 pid = fork(); >>> (gdb) bt >>> #0 0x080555e6 in forkshell (jp=0x2830c0c0, n=0x28304d94, mode=0) at >>> /usr/src/bin/sh/jobs.c:746 >>> #1 0x0804d759 in evalcommand (cmd=0x28304d94, flags=0, backcmd=0x0) at >>> /usr/src/bin/sh/eval.c:747 >>> #2 0x0804e725 in evaltree (n=0x28304d94, flags=0) at >>> /usr/src/bin/sh/eval.c:267 >>> #3 0x0804e4ff in evaltree (n=0x28304da4, flags=0) at >>> /usr/src/bin/sh/eval.c:238 >>> #4 0x0804e86c in evaltree (n=0x28304210, flags=0) at >>> /usr/src/bin/sh/eval.c:341 >>> #5 0x0804eba7 in evalstring ( >>> s=0xbf7fea84 "for entry in adjkerntz atacontrol atm badsect bsdlabel >>> camcontrol ccdconfig clri comcontrol conscontrol ddb devd devfs >>> dhclient dmesg dump dumpfs dumpon fdisk ffsinfo fsck fsck_"...) at >>> /usr/src/bin/sh/eval.c:169 >>> #6 0x08056d98 in main (argc=3, argv=0xbf7fe9a8) at >>> /usr/src/bin/sh/main.c:181 >>> >>> >>> >>> >>> /usr/obj/usr/src/libexec/ftpd/make.core >>> >>> Program terminated with signal 11, Segmentation fault. >>> #0 0x080898bf in memset () >>> (gdb) bt >>> #0 0x080898bf in memset () >>> #1 0x0000000c in ?? () >>> #2 0x0806f8b2 in arena_malloc () >>> #3 0x0807106b in malloc () >>> #4 0x0805a2d1 in emalloc (len=256) at /usr/src/usr.bin/make/util.c:234 >>> #5 0x08049d3f in Buf_Init (size=0) at /usr/src/usr.bin/make/buf.c:184 >>> #6 0x0805a63a in VarCreate (name=0x2810d118 ".CURDIR", value=0xbf7fe0b6 >>> "/usr/src/libexec/ftpd", flags=0) at /usr/src/usr.bin/make/var.c:214 >>> #7 0x0805a68d in VarAdd (name=0x2810d118 ".CURDIR", val=0xbf7fe0b6 >>> "/usr/src/libexec/ftpd", ctxt=0x28112180) at /usr/src/usr.bin/make/var.c:954 >>> #8 0x0805d2fc in Var_Set (name=0x809409d ".CURDIR", val=0xbf7fe0b6 >>> "/usr/src/libexec/ftpd", ctxt=0x28112180) at /usr/src/usr.bin/make/var.c:1009 >>> #9 0x0805d321 in Var_SetGlobal (name=0x809409d ".CURDIR", value=0xbf7fe0b6 >>> "/usr/src/libexec/ftpd") at /usr/src/usr.bin/make/var.c:1035 >>> #10 0x0805243f in main (argc=3, argv=0xbf7fed74) at >>> /usr/src/usr.bin/make/main.c:1115 >>> >>> >>> >>> /usr/obj/usr/src/usr.bin/telnet/as.core >>> >>> Program terminated with signal 11, Segmentation fault. >>> #0 0x080480d6 in _start () >>> (gdb) bt >>> #0 0x080480d6 in _start () >>> #1 0x00000003 in ?? () >>> _______________________________________________ >>> freebsd-xen@freebsd.org mailing list >>> http://lists.freebsd.org/mailman/listinfo/freebsd-xen >>> To unsubscribe, send any mail to "freebsd-xen-unsubscribe@freebsd.org" >>> > > >
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?3c1674c90902042003jb24eef0hec2960c270b54e31>