Date: Wed, 27 Aug 2003 22:16:35 -0500 From: Jonathan <j.e.drews@worldnet.att.net> To: freebsd-newbies@freebsd.org Subject: 4.8 STABLE page fault under heavy swapping Message-ID: <200308272216.35996.j.e.drews@worldnet.att.net>
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kernel: FreeBSD 4.8-STABLE #0: Mon Aug 25 19:26:01 CDT 2003
compiler: gcc version 2.95.4 20020320 [FreeBSD]
computer: IBM ThinkPad 600E
Hi:
Both my desktop and laptop are crashing/rebooting when running portupgrade
while at the same time using X. This never used to happen. To find out what
was going on I ran several heavy computational sessions while at the same
time portsdb -Uu was executing. Here is the backtrace from kdbg:
(kgdb) where
#0 dumpsys () at /usr/src/sys/kern/kern_shutdown.c:487
#1 0xc01abda7 in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:316
#2 0xc01ac1e5 in panic (fmt=0xc031e8c4 "from debugger") at
/usr/src/sys/kern/kern_shutdown.c:595
#3 0xc0134f0d in db_panic (addr=-898601789, have_addr=0, count=-1,
modif=0xca706a34 "") at /usr/src/sys/ddb/db_command.c:435
#4 0xc0134ead in db_command (last_cmdp=0xc03703c0, cmd_table=0xc0370200,
aux_cmd_tablep=0xc03acdf8) at /usr/src/sys/ddb/db_command.c:333
#5 0xc0134f72 in db_command_loop () at /usr/src/sys/ddb/db_command.c:457
#6 0xc01370af in db_trap (type=12, code=0) at /usr/src/sys/ddb/db_trap.c:71
#7 0xc02e57c2 in kdb_trap (type=12, code=0, regs=0xca706b64) at
/usr/src/sys/i386/i386/db_interface.c:158
#8 0xc02f500c in trap_fatal (frame=0xca706b64, eva=14) at
/usr/src/sys/i386/i386/trap.c:969
#9 0xc02f4a1a in trap (frame={tf_fs = 16, tf_es = 16, tf_ds = 16, tf_edi = 0,
tf_esi = -1069833940, tf_ebp = -898602080,
tf_isp = -898602096, tf_ebx = -898455944, tf_edx = -901929760, tf_ecx =
1, tf_eax = 14, tf_trapno = 12, tf_err = 2,
tf_eip = -898601789, tf_cs = 8, tf_eflags = 66118, tf_esp = -1071020156,
tf_ss = -898455944}) at /usr/src/sys/i386/i386/trap.c:636
#10 0xca706cc3 in ?? ()
#11 0xc0298784 in vm_fault (map=Cannot access memory at address 0x1024e.
) at /usr/src/sys/vm/vm_fault.c:292
Cannot access memory at address 0x10246.
(kgdb)
I performed a same stress test on Debian Linux and it worked flawlessly. No
crashes. The FreeBSD crashes everytime. The computer in question is dual boot
(Debian / FreeBSD) so both systems are using identical hardware.
What I want to know is this happening because of the code merged from
current? I read somwhere that they were going to try and make the accessible
memory greater than 2 Gb.
Yes I know this is a newbie forum. I am a newbie and I posted to the stable
list and got no answer. I did see many e-mails with the title "Ok, are all
the panics fixed now?". That worries me. I want to know if they are putting
code from CURRENT into the 4.8 STABLE?
Kind regards
Jonathan
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