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Date:      Wed, 25 Jun 2014 10:11:10 +0300
From:      =?UTF-8?B?SWxtYXJzIEtuaXDFoWlz?= <ilmarsk@rixbox.com>
To:        freebsd-stable@freebsd.org
Subject:   Re: panic: privileged instruction fault
Message-ID:  <53AA760E.4020202@rixbox.com>
In-Reply-To: <201406231641.07691.jhb@freebsd.org>
References:  <538D908F.6050801@rixtel.com> <201406231641.07691.jhb@freebsd.org>

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On 2014.06.23. 23:41, John Baldwin wrote:
> On Tuesday, June 03, 2014 5:08:31 am Ilmars Knipšis wrote:
>> Hello!
>>
>> This is binary install of FreeBSD 10 on Intel server board S1200 V3 RP
>> with ZFS mirrored SSD disks for OS and ZFS RAID 10 with 4 HDD disks for
>> data.
>>
>> I am getting the kernel panic at random time almost every day:
>> panic: privileged instruction fault
>> panic: general protection fault
>> panic: vm_fault: fault on nofault entry, addr: fffffe046667d000
>> panic: page fault
>>
>> Could it be faulty RAM ?
>>
>>
>>
>> Small extract from core.txt:
>>
>> FreeBSD xx.xxx.com 10.0-RELEASE FreeBSD 10.0-RELEASE #0 r260789: Thu Jan
>> 16 22:34:59 UTC 2014 root@snap.freebsd.org:/usr/obj/usr/src/sys/GENERIC
>> amd64
>>
>> Unread portion of the kernel message buffer:
>> trap number             = 1
>> panic: privileged instruction fault
>> cpuid = 0
>> KDB: stack backtrace:
>> #0 0xffffffff808e7dd0 at kdb_backtrace+0x60
>> #1 0xffffffff808af8b5 at panic+0x155
>> #2 0xffffffff80c8e692 at trap_fatal+0x3a2
>> #3 0xffffffff80c8e2cf at trap+0x7bf
>> #4 0xffffffff80c75392 at calltrap+0x8
>> #5 0xffffffff81853b3d at spa_sync+0x61d
>> #6 0xffffffff8185c925 at txg_sync_thread+0x375
>> #7 0xffffffff8088198a at fork_exit+0x9a
>> #8 0xffffffff80c758ce at fork_trampoline+0xe
>> Uptime: 13h55m6s
>> Dumping 1059 out of 16299
>> MB:..2%..11%..22%..31%..41%..52%..61%..71%..81%..91%
>>
>> Reading symbols from /boot/kernel/zfs.ko.symbols...done.
>> Loaded symbols for /boot/kernel/zfs.ko.symbols
>> Reading symbols from /boot/kernel/opensolaris.ko.symbols...done.
>> Loaded symbols for /boot/kernel/opensolaris.ko.symbols
>> Reading symbols from /boot/kernel/ums.ko.symbols...done.
>> Loaded symbols for /boot/kernel/ums.ko.symbols
>> Reading symbols from /boot/kernel/pflog.ko.symbols...done.
>> Loaded symbols for /boot/kernel/pflog.ko.symbols
>> Reading symbols from /boot/kernel/pf.ko.symbols...done.
>> Loaded symbols for /boot/kernel/pf.ko.symbols
>> Reading symbols from /boot/kernel/nullfs.ko.symbols...done.
>> Loaded symbols for /boot/kernel/nullfs.ko.symbols
>> Reading symbols from /boot/kernel/fdescfs.ko.symbols...done.
>> Loaded symbols for /boot/kernel/fdescfs.ko.symbols
>> #0  doadump (textdump=<value optimized out>) at pcpu.h:219
>> 219     pcpu.h: No such file or directory.
>>           in pcpu.h
> Can you do 'x/i 0xffffffff81853b3d' in kgdb?  (Yes, it is quite possible this
> is due to bad RAM)
>
I am not familiar with kgdb. Is that exactly syntax to use?

12h memtest86+ do not discover any error. However after that i have only 
(no other kind of panic):

panic: general protection fault


I will try to rebuild world.




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