panic: privileged instruction fault

[John Baldwin]

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 at 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)

-- 
John Baldwin