I have been seeing a few of these on this box in the past few days since
trying out clamav. Not sure how a userland app would trigger such
faults. Bad memory ? Or bug ?
4.10-STABLE FreeBSD 4.10-STABLE #1: Wed Nov 10 08:56:34 EST 2004
IdlePTD at physical address 0x002db000
initial pcb at physical address 0x00259620
panicstr: page fault
panic messages:
---
Fatal trap 12: page fault while in kernel mode
fault virtual address = 0x314c4
fault code = supervisor write, page not present
instruction pointer = 0x8:0xc01d1b40
stack pointer = 0x10:0xedd45ef0
frame pointer = 0x10:0xedd45ef4
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 = 3 (pagedaemon)
interrupt mask = net tty bio cam
trap number = 12
panic: page fault
syncing disks... 71 1 1 1 1 1 1 1 45
done
Uptime: 2d2h27m48s
(kgdb) bt
#0 dumpsys () at /usr/src/sys/kern/kern_shutdown.c:487
#1 0xc014c90c in boot (howto=256) at /usr/src/sys/kern/kern_shutdown.c:316
#2 0xc014cd40 in poweroff_wait (junk=0xc023144c, howto=-1071444145) at
/usr/src/sys/kern/kern_shutdown.c:595
#3 0xc01facff in trap_fatal (frame=0xedd45eb0, eva=201924) at
/usr/src/sys/i386/i386/trap.c:974
#4 0xc01fa9b9 in trap_pfault (frame=0xedd45eb0, usermode=0, eva=201924) at
/usr/src/sys/i386/i386/trap.c:867
#5 0xc01fa58f in trap (frame={tf_fs = -1045102576, tf_es = 16, tf_ds =
6815760, tf_edi = 0, tf_esi = 0, tf_ebp = -304849164,
tf_isp = -304849188, tf_ebx = -1071191152, tf_edx = 201920, tf_ecx =
-1067642188, tf_eax = -1071191152, tf_trapno = 12,
tf_err = 2, tf_eip = -1071834304, tf_cs = 8, tf_eflags = 66054,
tf_esp = -1067642188, tf_ss = -304849144})
at /usr/src/sys/i386/i386/trap.c:466
#6 0xc01d1b40 in vm_page_unqueue_nowakeup (m=0xc05d12b4) at
/usr/src/sys/vm/vm_page.c:582
#7 0xc01d2539 in vm_page_cache (m=0xc05d12b4) at
/usr/src/sys/vm/vm_page.c:1426
#8 0xc01d395c in vm_pageout_scan (pass=0) at /usr/src/sys/vm/vm_pageout.c:792
#9 0xc01d44fb in vm_pageout () at /usr/src/sys/vm/vm_pageout.c:1405
(kgdb)
(kgdb) bt full
#0 dumpsys () at /usr/src/sys/kern/kern_shutdown.c:487
error = 0
#1 0xc014c90c in boot (howto=256) at /usr/src/sys/kern/kern_shutdown.c:316
howto = 256
#2 0xc014cd40 in poweroff_wait (junk=0xc023144c, howto=-1071444145) at
/usr/src/sys/kern/kern_shutdown.c:595
fmt = 0xc023144c "%s"
bootopt = 256
buf = "page fault", '\000' <repeats 245 times>
#3 0xc01facff in trap_fatal (frame=0xedd45eb0, eva=201924) at
/usr/src/sys/i386/i386/trap.c:974
frame = (struct trapframe *) 0x100
eva = 0
code = -1071442868
type = 12
ss = -1071442868
esp = 0
softseg = {ssd_base = 0, ssd_limit = 1048575, ssd_type = 27,
ssd_dpl = 0, ssd_p = 1, ssd_xx = 9, ssd_xx1 = 2,
ssd_def32 = 1, ssd_gran = 1}
#4 0xc01fa9b9 in trap_pfault (frame=0xedd45eb0, usermode=0, eva=201924) at
/usr/src/sys/i386/i386/trap.c:867
va = 200704
vm = (struct vmspace *) 0x0
map = 0xc0257a20
rv = 0
ftype = 2 '\002'
p = (struct proc *) 0xe6ad9ac0
#5 0xc01fa58f in trap (frame={tf_fs = -1045102576, tf_es = 16, tf_ds =
6815760, tf_edi = 0, tf_esi = 0, tf_ebp = -304849164,
tf_isp = -304849188, tf_ebx = -1071191152, tf_edx = 201920, tf_ecx =
-1067642188, tf_eax = -1071191152, tf_trapno = 12,
tf_err = 2, tf_eip = -1071834304, tf_cs = 8, tf_eflags = 66054,
tf_esp = -1067642188, tf_ss = -304849144})
at /usr/src/sys/i386/i386/trap.c:466
p = (struct proc *) 0xe6ad9ac0
sticks = 18155139221172181
i = 0
ucode = 0
type = 12
code = 0
eva = 201924
#6 0xc01d1b40 in vm_page_unqueue_nowakeup (m=0xc05d12b4) at
/usr/src/sys/vm/vm_page.c:582
m = 0x0
queue = 0
pq = (struct vpgqueues *) 0x6fc052
#7 0xc01d2539 in vm_page_cache (m=0xc05d12b4) at
/usr/src/sys/vm/vm_page.c:1426
m = 0xc05d12b4
s = 0
#8 0xc01d395c in vm_pageout_scan (pass=0) at /usr/src/sys/vm/vm_pageout.c:792
m = 0xc05d12b4
next = 0x314c0
marker = {pageq = {tqe_next = 0x0, tqe_prev = 0x0}, hnext = 0x0,
listq = {tqe_next = 0x0, tqe_prev = 0x0}, object = 0x0,
---Type <return> to continue, or q <return> to quit---
pindex = 0, phys_addr = 0, md = {pv_list_count = 0, pv_list = {tqh_first
= 0x0, tqh_last = 0x0}}, queue = 33, flags = 4105,
pc = 0, wire_count = 1, hold_count = 0, act_count = 0 '\000', busy =
0
'\000', valid = 0 '\000', dirty = 0 '\000'}
page_shortage = 2141
maxscan = 95747
pcount = -424830272
addl_page_shortage = 0
addl_page_shortage_init = 0
p = (struct proc *) 0x0
bigproc = (struct proc *) 0x0
size = 0
bigsize = 3990118208
object = 0x0
actcount = 0
vnodes_skipped = 0
maxlaunder = 32
s = 0
#9 0xc01d44fb in vm_pageout () at /usr/src/sys/vm/vm_pageout.c:1405
error = 0
s = 0
pass = 0
And from a few days ago with a slightly older kernel
(kgdb) bt
#0 dumpsys () at /usr/src/sys/kern/kern_shutdown.c:487
#1 0xc014c868 in boot (howto=256) at /usr/src/sys/kern/kern_shutdown.c:316
#2 0xc014cc9c in poweroff_wait (junk=0xc02312ec, howto=-1071444497) at
/usr/src/sys/kern/kern_shutdown.c:595
#3 0xc01fac3f in trap_fatal (frame=0xef83ce3c, eva=166771204) at
/usr/src/sys/i386/i386/trap.c:974
#4 0xc01fa8f9 in trap_pfault (frame=0xef83ce3c, usermode=0, eva=166771204)
at /usr/src/sys/i386/i386/trap.c:867
#5 0xc01fa4cf in trap (frame={tf_fs = 16, tf_es = -278724592, tf_ds =
-278724592, tf_edi = 135249920, tf_esi = 35,
tf_ebp = -276574588, tf_isp = -276574616, tf_ebx = -277882352,
tf_edx = 166771184, tf_ecx = 8968288, tf_eax = 515857,
tf_trapno = 12, tf_err = 0, tf_eip = -1071834672, tf_cs = 8,
tf_eflags = 66054, tf_esp = 0, tf_ss = -277126336})
at /usr/src/sys/i386/i386/trap.c:466
#6 0xc01d19d0 in vm_page_lookup (object=0xef6fda10, pindex=35) at
/usr/src/sys/vm/vm_page.c:515
#7 0xc01c9b4e in vm_fault (map=0xef7b6340, vaddr=135249920, fault_type=2
'\002', fault_flags=8) at /usr/src/sys/vm/vm_fault.c:292
#8 0xc01fa88b in trap_pfault (frame=0xef83cfa8, usermode=1, eva=135252524)
at /usr/src/sys/i386/i386/trap.c:847
#9 0xc01fa3a3 in trap (frame={tf_fs = 673906735, tf_es = 673906735, tf_ds
= -1078001617, tf_edi = 135252524, tf_esi = 16,
tf_ebp = -1077950596, tf_isp = -276574252, tf_ebx = 135538448,
tf_edx = 4, tf_ecx = 4, tf_eax = 9, tf_trapno = 12,
tf_err = 7, tf_eip = 134877998, tf_cs = 31, tf_eflags = 66118,
tf_esp = -1077950636, tf_ss = 47})
at /usr/src/sys/i386/i386/trap.c:377
#10 0x80a132e in ?? ()
#11 0x8069ff8 in ?? ()
#12 0x80646fc in ?? ()
#13 0x809a563 in ?? ()
#14 0x806e834 in ?? ()
#15 0x804c21a in ?? ()
(kgdb)
(kgdb) bt
#0 dumpsys () at /usr/src/sys/kern/kern_shutdown.c:487
#1 0xc014c868 in boot (howto=256) at /usr/src/sys/kern/kern_shutdown.c:316
#2 0xc014cc9c in poweroff_wait (junk=0xc022b140, howto=-1058224168) at
/usr/src/sys/kern/kern_shutdown.c:595
#3 0xc01d1875 in vm_page_insert (m=0xc0ecc7d8, object=0xef7ddb24,
pindex=31) at /usr/src/sys/vm/vm_page.c:375
#4 0xc01d1d54 in vm_page_alloc (object=0xef7ddb24, pindex=31, page_req=0)
at /usr/src/sys/vm/vm_page.c:845
#5 0xc01c9cb4 in vm_fault (map=0xef679140, vaddr=3217027072, fault_type=2
'\002', fault_flags=8) at /usr/src/sys/vm/vm_fault.c:363
#6 0xc01fa88b in trap_pfault (frame=0xf14d7fa8, usermode=1,
eva=3217031156) at /usr/src/sys/i386/i386/trap.c:847
#7 0xc01fa3a3 in trap (frame={tf_fs = -1078001617, tf_es = 673906735,
tf_ds = -1078001617, tf_edi = 673963483,
tf_esi = 673963424, tf_ebp = -1077964400, tf_isp = -246579244,
tf_ebx = 673954988, tf_edx = 1, tf_ecx = 0,
tf_eax = -1077936144, tf_trapno = 12, tf_err = 7, tf_eip =
673590804, tf_cs = 31, tf_eflags = 66071, tf_esp = -1077964456,
tf_ss = 47}) at /usr/src/sys/i386/i386/trap.c:377
#8 0x28262e14 in ?? ()
#9 0x80514c4 in ?? ()
#10 0x805bb01 in ?? ()
#11 0x805a14e in ?? ()
#12 0x8059d87 in ?? ()
#13 0x809fa83 in ?? ()
#14 0x809de83 in ?? ()
#15 0x806e834 in ?? ()
#16 0x804c21a in ?? ()
(kgdb)
--------------------------------------------------------------------
Mike Tancsa, tel +1 519 651 3400
Sentex Communications, mike@sentex.net
Providing Internet since 1994 www.sentex.net
Cambridge, Ontario Canada www.sentex.net/mike