Fatal trap 12: page fault while in kernel mode
NAKAJI Hiroyuki
nakaji at jp.freebsd.org
Tue Dec 9 09:32:52 UTC 2008
>>>>> In <3c1674c90812081449r7b8ef242lce478da3d2d7a968 at mail.gmail.com>
>>>>> "Kip Macy" <kmacy at freebsd.org> wrote:
> Recently - starting when?
I noticed that panics since late November. But I forgot the day.
My last update of the world was in October.
Thanks.
> On Mon, Dec 8, 2008 at 2:47 PM, NAKAJI Hiroyuki <nakaji at jp.freebsd.org> wrote:
> >>>>>> In <863ah2qivi.fsf at ra333.heimat.gr.jp>
> >>>>>> NAKAJI Hiroyuki <nakaji at jp.freebsd.org> wrote:
> >
> >> So, what I have to do are three:
> >
> >> 1. Full upgrade to the latest kernel and userland (world)
> >> 2. Observe whether a panic occurs, and
> >> 3. When panic, save the crash dump and get full bt with kgdb
> >
> >> I hope it will not reach to the step three. Thanks.
> >
> > Unfortunately, I faced to "db> " on my serial console.
> >
> > db> bt
> > Tracing pid 964 tid 100131 td 0xc49876c0
> > svc_run_internal(e6861d24,c0850793,c44f2780,e6861d38,1,...) at svc_run_internal+
> > 0x575
> > svc_thread_start(c44f2780,e6861d38,1,0,4836bd14,...) at svc_thread_start+0x10
> > fork_exit(c0a57fe0,c44f2780,e6861d38) at fork_exit+0x93
> > fork_trampoline() at fork_trampoline+0x8
> > --- trap 0, eip = 0xc, esp = 0x33, ebp = 0 ---
> > db> call doadump
> > Physical memory: 1010 MB
> > Dumping 250 MB: 235 219 203 187 171 155 139 123 107 91 75 59 43 27 11
> > Dump complete
> > = 0xf
> > db> bt
> > Tracing pid 964 tid 100131 td 0xc49876c0
> > svc_run_internal(e6861d24,c0850793,c44f2780,e6861d38,1,...) at svc_run_internal+
> > 0x575
> > svc_thread_start(c44f2780,e6861d38,1,0,4836bd14,...) at svc_thread_start+0x10
> > fork_exit(c0a57fe0,c44f2780,e6861d38) at fork_exit+0x93
> > fork_trampoline() at fork_trampoline+0x8
> > --- trap 0, eip = 0xc, esp = 0x33, ebp = 0 ---
> > db> reset
> >
> > And then, I used kgdb.
> >
> > # kgdb /boot/kernel/kernel.symbols vmcore.9
> > 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"...
> >
> > Unread portion of the kernel message buffer:
> >
> >
> > Fatal trap 12: page fault while in kernel mode
> > cpuid = 0; apic id = 00
> > fault virtual address = 0x0
> > fault code = supervisor read, page not present
> > instruction pointer = 0x20:0xc0a57a75
> > stack pointer = 0x28:0xe6861c44
> > frame pointer = 0x28:0xe6861cec
> > code segment = base 0x0, limit 0xfffff, type 0x1b
> > = DPL 0, pres 1, def32 1, gran 1
> > processor eflags = interrupt enabled, resume, IOPL = 0
> > current process = 964 (nfsd: service)
> > Physical memory: 1010 MB
> > Dumping 250 MB: 235 219 203 187 171 155 139 123 107 91 75 59 43 27 11
> >
> > Reading symbols from /boot/kernel/linprocfs.ko...Reading symbols from /boot/kernel/linprocfs.ko.symbols...done.
> > done.
> > Loaded symbols for /boot/kernel/linprocfs.ko
> > Reading symbols from /boot/kernel/linux.ko...Reading symbols from /boot/kernel/linux.ko.symbols...done.
> > done.
> > Loaded symbols for /boot/kernel/linux.ko
> > Reading symbols from /boot/kernel/smbus.ko...Reading symbols from /boot/kernel/smbus.ko.symbols...done.
> > done.
> > Loaded symbols for /boot/kernel/smbus.ko
> > Reading symbols from /boot/kernel/aio.ko...Reading symbols from /boot/kernel/aio.ko.symbols...done.
> > done.
> > Loaded symbols for /boot/kernel/aio.ko
> > Reading symbols from /boot/kernel/mga.ko...Reading symbols from /boot/kernel/mga.ko.symbols...done.
> > done.
> > Loaded symbols for /boot/kernel/mga.ko
> > Reading symbols from /boot/kernel/drm.ko...Reading symbols from /boot/kernel/drm.ko.symbols...done.
> > done.
> > Loaded symbols for /boot/kernel/drm.ko
> > Reading symbols from /boot/kernel/atapicam.ko...Reading symbols from /boot/kernel/atapicam.ko.symbols...done.
> > done.
> > Loaded symbols for /boot/kernel/atapicam.ko
> > Reading symbols from /boot/kernel/nullfs.ko...Reading symbols from /boot/kernel/nullfs.ko.symbols...done.
> > done.
> > Loaded symbols for /boot/kernel/nullfs.ko
> > Reading symbols from /boot/kernel/logo_saver.ko...Reading symbols from /boot/kernel/logo_saver.ko.symbols...done.
> > done.
> > Loaded symbols for /boot/kernel/logo_saver.ko
> > #0 doadump () at pcpu.h:246
> > 246 pcpu.h: No such file or directory.
> > in pcpu.h
> > (kgdb) bt
> > #0 doadump () at pcpu.h:246
> > #1 0xc04c2a69 in db_fncall (dummy1=-1059812576, dummy2=0, dummy3=-1067505768,
> > dummy4=0xe68619d8 "�:i�\2008'�") at /usr/src/sys/ddb/db_command.c:548
> > #2 0xc04c2e61 in db_command (last_cmdp=0xc0d3e85c, cmd_table=0x0, dopager=1)
> > at /usr/src/sys/ddb/db_command.c:445
> > #3 0xc04c2fba in db_command_loop () at /usr/src/sys/ddb/db_command.c:498
> > #4 0xc04c4dfd in db_trap (type=12, code=0) at /usr/src/sys/ddb/db_main.c:229
> > #5 0xc08a2456 in kdb_trap (type=12, code=0, tf=0xe6861c04)
> > at /usr/src/sys/kern/subr_kdb.c:534
> > #6 0xc0b8059f in trap_fatal (frame=0xe6861c04, eva=0)
> > at /usr/src/sys/i386/i386/trap.c:920
> > #7 0xc0b80860 in trap_pfault (frame=0xe6861c04, usermode=0, eva=0)
> > at /usr/src/sys/i386/i386/trap.c:842
> > #8 0xc0b8126a in trap (frame=0xe6861c04) at /usr/src/sys/i386/i386/trap.c:522
> > #9 0xc0b652cb in calltrap () at /usr/src/sys/i386/i386/exception.s:165
> > #10 0xc0a57a75 in svc_run_internal (pool=0xc44f2780, ismaster=0)
> > at /usr/src/sys/rpc/svc.c:787
> > #11 0xc0a57ff0 in svc_thread_start (arg=0xc44f2780)
> > at /usr/src/sys/rpc/svc.c:1188
> > #12 0xc0850793 in fork_exit (callout=0xc0a57fe0 <svc_thread_start>,
> > arg=0xc44f2780, frame=0xe6861d38) at /usr/src/sys/kern/kern_fork.c:821
> > #13 0xc0b65340 in fork_trampoline () at /usr/src/sys/i386/i386/exception.s:270
> > (kgdb)
> >
> > In addition,
> >
> > # addr2line -e /boot/kernel/kernel.symbols 0xc0a57a75
> > /usr/src/sys/rpc/svc.c:787
> >
> > Any help is appreciated. Thanks.
> > --
> > NAKAJI Hiroyuki
> > _______________________________________________
> > freebsd-current at freebsd.org mailing list
> > http://lists.freebsd.org/mailman/listinfo/freebsd-current
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> >
> --
> If we desire respect for the law, we must first make the law respectable.
> - Louis D. Brandeis
--
NAKAJI Hiroyuki
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