Date: Sat, 4 Jun 2005 02:10:32 -0400 From: Kris Kennaway <kris@obsecurity.org> To: Palle Girgensohn <girgen@pingpong.net> Cc: Brendan White <bmwt@caida.org>, freebsd-stable@freebsd.org Subject: Re: Repeatable crash with 5.4-p1-RELEASE and SMP Message-ID: <20050604061031.GA8643@xor.obsecurity.org> In-Reply-To: <2032FF2A928A89651F1C7843@rambutan.pingpong.net> References: <2032FF2A928A89651F1C7843@rambutan.pingpong.net>
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[-- Attachment #1 --]
On Sat, Jun 04, 2005 at 03:48:04AM +0200, Palle Girgensohn wrote:
> Here's the dump. Anything else I shall extract, please just ask.
>
> # kgdb kernel.debug /misc/crash/vmcore.11
> [GDB will not be able to debug user-mode threads: /usr/lib/libthread_db.so:
> Undefined symbol "ps_pglobal_lookup"]
> GNU gdb 6.1.1 [FreeBSD]
> Copyright 2004 Free Software Foundation, Inc.
> GDB is free software, covered by the GNU General Public License, and you are
> welcome to change it and/or distribute copies of it under certain
> conditions.
> Type "show copying" to see the conditions.
> There is absolutely no warranty for GDB. Type "show warranty" for details.
> This GDB was configured as "amd64-marcel-freebsd".
> #0 doadump () at pcpu.h:167
> 167 __asm __volatile("movq %%gs:0,%0" : "=r" (td));
> (kgdb) backtrace
> #0 doadump () at pcpu.h:167
> #1 0x0000000000000000 in ?? ()
> #2 0xffffffff80341267 in boot (howto=260) at
> /usr/src/sys/kern/kern_shutdown.c:410
> #3 0xffffffff80341ac6 in panic (fmt=0xffffff007b76d000 "??x{") at
> /usr/src/sys/kern/kern_shutdown.c:566
> #4 0xffffffff804f0f52 in trap_fatal (frame=0xc, eva=18446742976269307904)
> at /usr/src/sys/amd64/amd64/trap.c:639
> #5 0xffffffff804f11ef in trap_pfault (frame=0xffffffffb1d229b0, usermode=0)
> at /usr/src/sys/amd64/amd64/trap.c:562
> #6 0xffffffff804f1457 in trap (frame=
> {tf_rdi = -1097427517200, tf_rsi = -1097440243712, tf_rdx = 1056,
> tf_rcx = 0, tf_r8 = 0, tf_r9 = 0, tf_r
> ax = 1056, tf_rbx = 0, tf_rbp = -1098069766144, tf_r10 = 4503599627366400,
> tf_r11 = 3392, tf_r12 = 4, tf_r13 =
> 4, tf_r14 = -1099313881192, tf_r15 = -1097364452848, tf_trapno = 12,
> tf_addr = 136, tf_flags = -1099313881192
> , tf_err = 0, tf_rip = -2144020582, tf_cs = 8, tf_rflags = 66050, tf_rsp =
> -1311626640, tf_ss = 0})
> at /usr/src/sys/amd64/amd64/trap.c:341
> #7 0xffffffff804deb0b in calltrap () at
> /usr/src/sys/amd64/amd64/exception.S:171
> #8 0xffffff007c3900f0 in ?? ()
> #9 0xffffff007b76d000 in ?? ()
Is your kernel built with -O2, or -O? There are a lot of bogus stack
frames here, which suggest the former.
Kris
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