Date: Fri, 19 Sep 2003 17:05:13 +0300 From: Aleksey Ovcharenko <alexovch@ic.kharkov.ua> To: freebsd-questions@freebsd.org Subject: Fatal trap 12: page fault while in kernel mode Message-ID: <200309191705.13895.alexovch@ic.kharkov.ua>
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Hi!
I updated my 4.8-STABLE to 4.9-PRERELEASE (FreeBSD 4.9-PRERELEASE #0: Fri Sep
19 11:36:02 EEST 2003), run portupgrade -rRa and in a few mins I saw crash:
IdlePTD at phsyical address 0x0042e000
initial pcb at physical address 0x00372c00
panicstr: page fault
panic messages:
---
Fatal trap 12: page fault while in kernel mode
fault virtual address = 0x41413042
fault code = supervisor read, page not present
instruction pointer = 0x8:0xc026cfd7
stack pointer = 0x10:0xe32c8cb0
frame pointer = 0x10:0xe32c8cb4
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 = 63994 (du)
interrupt mask = none
trap number = 12
panic: page fault
syncing disks... 55 43 29 19 11 5
done
Uptime: 18m49s
---
#0 dumpsys () at /usr/src/sys/kern/kern_shutdown.c:487
487 if (dumping++) {
(kgdb) where
#0 dumpsys () at /usr/src/sys/kern/kern_shutdown.c:487
#1 0xc0177df0 in boot (howto=256) at /usr/src/sys/kern/kern_shutdown.c:316
#2 0xc017823d in panic (fmt=0xc031fc2c "%s") at
/usr/src/sys/kern/kern_shutdown.c:595
#3 0xc02c87f4 in trap_fatal (frame=0xe32c8c70, eva=1094791234) at
/usr/src/sys/i386/i386/trap.c:974
#4 0xc02c8489 in trap_pfault (frame=0xe32c8c70, usermode=0, eva=1094791234)
at /usr/src/sys/i386/i386/trap.c:867
#5 0xc02c801b in trap (frame={tf_fs = 16, tf_es = 16, tf_ds = 16, tf_edi =
4608, tf_esi = -1022012928, tf_ebp = -483619660,
tf_isp = -483619684, tf_ebx = -1024392832, tf_edx = 1094791234, tf_ecx =
7, tf_eax = 22, tf_trapno = 12, tf_err = 0,
tf_eip = -1071198249, tf_cs = 8, tf_eflags = 66054, tf_esp = 8, tf_ss =
-483619592}) at /usr/src/sys/i386/i386/trap.c:466
#6 0xc026cfd7 in zalloc (z=0xc2f10180) at /usr/src/sys/vm/vm_zone.c:70
#7 0xc025c70f in ufsdirhash_build (ip=0xc2fa4600) at
/usr/src/sys/ufs/ufs/ufs_dirhash.c:166
#8 0xc0256cce in ufs_lookup (ap=0xe32c8db8) at
/usr/src/sys/ufs/ufs/ufs_lookup.c:196
#9 0xc025c4c5 in ufs_vnoperate (ap=0xe32c8db8) at
/usr/src/sys/ufs/ufs/ufs_vnops.c:2376
#10 0xc01a28de in vfs_cache_lookup (ap=0xe32c8e10) at vnode_if.h:77
#11 0xc025c4c5 in ufs_vnoperate (ap=0xe32c8e10) at
/usr/src/sys/ufs/ufs/ufs_vnops.c:2376
#12 0xc01a5915 in lookup (ndp=0xe32c8e8c) at vnode_if.h:52
#13 0xc01a5400 in namei (ndp=0xe32c8e8c) at /usr/src/sys/kern/vfs_lookup.c:153
#14 0xc01ab301 in lstat (p=0xe30cd040, uap=0xe32c8f80) at
/usr/src/sys/kern/vfs_syscalls.c:1824
#15 0xc02c8a65 in syscall2 (frame={tf_fs = 47, tf_es = 47, tf_ds = 47, tf_edi
= 134546432, tf_esi = 134546536, tf_ebp = -1077937616,
tf_isp = -483618860, tf_ebx = 672180108, tf_edx = 3, tf_ecx = 134546496,
tf_eax = 190, tf_trapno = 12, tf_err = 2, tf_eip = 671855176,
tf_cs = 31, tf_eflags = 659, tf_esp = -1077937756, tf_ss = 47}) at
/usr/src/sys/i386/i386/trap.c:1175
#16 0xc02b9695 in Xint0x80_syscall ()
#17 0x280b7879 in ?? ()
#18 0x280b70f6 in ?? ()
#19 0x8048e86 in ?? ()
#20 0x8048902 in ?? ()
(kgdb)
After that I could finish my upgrade w/o any crashes or so.
Any ideas what was that? Or where to look?
--
Sincerely Yours, Aleksey Ovcharenko
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