Hi list,
forwarding to freebsd-stable (probably the right place anyway),
since I got no further responses on freebsd-questions.
Subhro [EMAIL PROTECTED] wrote:
On 5/5/2005 19:43, Fabian Keil wrote:
the day before yesterday I experienced my first
panic on 5.4-STABLE. Build and cvsup'ed last
Friday. My system is a ThinkPad R51
I did nothing spectacular, after boot I:
logged in as user
cdrecord -scanbus (which didn't work as I hadn't yet set it suid)
su
chmod +x for cdrecord and readcd (meant was +g ;-)
exit
cdrecord -scanbus (didn't yet work ;-)
su
cdrecord -scanbus (did work)
readcd dev=2,0,0 -factor meshpoints=100 f=./file
exit
Then I moved the laptop and plugged in the AC/DC adapter.
whoami brought me:
Kernel trap 12 with interrupts disabled
Fatal trap 12: page fault while in kernel mode
fault virtual address= 0xa94d06c
fault code = supervisor read, page not present
instruction pointer = 0x8:0xc053cbe5
stack pointer = 0x10:0xe669f98c
frame pointer= 0x10:0xe669f990
code segment = base 0x0, limit 0xf, type 0x1b
= DPL 0, pres 1, def32 1, gran 1
processor eflags= resume, IOPL = 0
current process = 601 (whoami)
trap number = 12
panic: page fault
I saved the dump manually with savecore and then tried
to follow:
http://www.freebsd.org/doc/en_US.ISO8859-1/books/faq/advanced.html#KERNEL-PANIC-TROUBLESHOOTING
[EMAIL PROTECTED] ~ $nm -n /boot/kernel/kernel | grep c053cb
c053cb4c T init_turnstiles
c053cbc9 t init_turnstile0
c053cbd8 t turnstile_setowner
My kernel contains makeoptions DEBUG=-g, however
I don't have the file /sys/compile/KERNELCONFIG/kernel.debug
and thus wasn't able to do
% gdb -k /sys/compile/KERNELCONFIG/kernel.debug /var/crash/vmcore.0
It turned out that I just was looking at the wrong places, kernel.debug
was found at /usr/obj/usr/src/sys/THINKPAD/kernel.debug.
http://www.freebsd.org/doc/en_US.ISO8859-1/books/developers-handbook/kerneldebug-gdb.html
fits better and contains a pointer to kgdb.
[EMAIL PROTECTED] ~ $cat info.0
Dump header from device /dev/ad0s3b
Architecture: i386
Architecture Version: 16777216
Dump Length: 536215552B (511 MB)
Blocksize: 512
Dumptime: Tue May 3 20:18:11 2005
Hostname: r51.local
Magic: FreeBSD Kernel Dump
Version String: FreeBSD 5.4-STABLE #6: Sat Apr 30 14:57:04 CEST 2005
[EMAIL PROTECTED]:/usr/obj/usr/src/sys/THINKPAD
Panic String: page fault
Dump Parity: 1084811848
Bounds: 0
Dump Status: good
The kernel was build the new way.
I was not able to reproduce the panic.
Is there anything else I can do?
It would be great to have a look at the core. Can you put it up
somewhere on the WEB? Also if you are not running a GENERIC kernel then
let us have a look at the config file.
[EMAIL PROTECTED] ~ $ls -lh|grep core
-rw--- 1 fk wheel 511M May 3 20:38 vmcore.0
-rw--- 1 fk wheel 354M May 5 19:11 vmcore.0.gz
I don't have that much web space available.
However the following seems to be interesting:
[EMAIL PROTECTED] ~ $kgdb kernel.debug vmcore.0
[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 i386-marcel-freebsd.
#0 doadump () at pcpu.h:160
160 pcpu.h: No such file or directory.
in pcpu.h
(kgdb) where
#0 doadump () at pcpu.h:160
#1 0xc0519e76 in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:410
#2 0xc051a1a7 in panic (fmt=0xc06bafe5 %s) at
/usr/src/sys/kern/kern_shutdown.c:566
#3 0xc0693758 in trap_fatal (frame=0xe669f94c, eva=0) at
/usr/src/sys/i386/i386/trap.c:809
#4 0xc0692dca in trap (frame=
{tf_fs = 24, tf_es = 16, tf_ds = 16, tf_edi = -429261692, tf_esi =
-1043159552, tf_ebp = -429262448, tf_isp = -429262472, tf_ebx = -1043640192,
tf_edx = -1043640192, tf_ecx = 177524736, tf_eax = 177524736, tf_trapno = 12,
tf_err = 0, tf_eip = -1068250139, tf_cs = 8, tf_eflags = 65539, tf_esp =
-1043159552, tf_ss = -429262416})
at /usr/src/sys/i386/i386/trap.c:247
#5 0xc0681baa in calltrap () at /usr/src/sys/i386/i386/exception.s:140
#6 0x0018 in ?? ()
#7 0x0010 in ?? ()
#8 0x0010 in ?? ()
#9 0xe669fc84 in ?? ()
#10 0xc1d2a600 in ?? ()
#11 0xe669f990 in ?? ()
#12 0xe669f978 in ?? ()
#13 0xc1cb5080 in ?? ()
#14 0xc1cb5080 in ?? ()
#15 0x0a94d000 in ?? ()
#16 0x0a94d000 in ?? ()
#17 0x000c in ?? ()
#18 0x in ?? ()
#19 0xc053cbe5 in turnstile_setowner (ts=0xc1cb5080, owner=0x0) at
/usr/src/sys/kern/subr_turnstile.c:367
#20
