kern/69685: panic: page fault in ffs_write / b_copy
scrappy at hub.org
scrappy at hub.org
Tue Jul 27 19:00:39 PDT 2004
>Number: 69685
>Category: kern
>Synopsis: panic: page fault in ffs_write / b_copy
>Confidential: no
>Severity: critical
>Priority: high
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Wed Jul 28 02:00:26 GMT 2004
>Closed-Date:
>Last-Modified:
>Originator: Marc G. Fournier
>Release: FreeBSD 4.10-STABLE i386
>Organization:
Hub.Org Networking Services
>Environment:
>Description:
Script started on Tue Jul 27 22:50:27 2004
jupiter# gdb -k /usr/obj/usr/src/sys/kernel/kernel.debug vmcore.12
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This GDB was configured as "i386-unknown-freebsd"...Deprecated bfd_read called at /usr/src/gnu/usr.bin/binutils/gdb/../../../../contrib/gdb/gdb/dbxread.c line 2627 in elfstab_build_psymtabs
Deprecated bfd_read called at /usr/src/gnu/usr.bin/binutils/gdb/../../../../contrib/gdb/gdb/dbxread.c line 933 in fill_symbuf
SMP 2 cpus
IdlePTD at physical address 0x00340000
initial pcb at physical address 0x002b0f40
panicstr: page fault
panic messages:
---
Fatal trap 12: page fault while in kernel mode
mp_lock = 00000002; cpuid = 0; lapic.id = 03000000
fault virtual address = 0x0
fault code = supervisor read, page not present
instruction pointer = 0x8:0x8023e416
stack pointer = 0x10:0xb892ec04
frame pointer = 0x10:0xb892ec30
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 = 7 (syncer)
interrupt mask = none <- SMP: XXX
trap number = 12
panic: page fault
mp_lock = 00000002; cpuid = 0; lapic.id = 03000000
boot() called on cpu#0
syncing disks...
Fatal trap 12: page fault while in kernel mode
mp_lock = 00000003; cpuid = 0; lapic.id = 03000000
fault virtual address = 0x0
fault code = supervisor read, page not present
instruction pointer = 0x8:0x8023e416
stack pointer = 0x10:0xb892e790
frame pointer = 0x10:0xb892e7bc
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 = 7 (syncer)
interrupt mask = none <- SMP: XXX
trap number = 12
panic: page fault
mp_lock = 00000003; cpuid = 0; lapic.id = 03000000
boot() called on cpu#0
Uptime: 51d22h31m49s
dumping to dev #da/0x20001, offset 8519808
---
#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 0x801522eb in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:316
#2 0x8015275d in panic (fmt=0x80275399 "%s") at /usr/src/sys/kern/kern_shutdown.c:595
#3 0x8023fa41 in trap_fatal (frame=0xb892e750, eva=0) at /usr/src/sys/i386/i386/trap.c:974
#4 0x8023f6ad in trap_pfault (frame=0xb892e750, usermode=0, eva=0) at /usr/src/sys/i386/i386/trap.c:867
#5 0x8023f20b in trap (frame={tf_fs = -1774387176, tf_es = -2042626032, tf_ds = -2042626032, tf_edi = -1509507072, tf_esi = 0,
tf_ebp = -1198331972, tf_isp = -1198332036, tf_ebx = 8192, tf_edx = -1509507072, tf_ecx = 2048, tf_eax = -1509507072,
tf_trapno = 12, tf_err = 0, tf_eip = -2145131498, tf_cs = 8, tf_eflags = 66054, tf_esp = -1198331732, tf_ss = -1198331760})
at /usr/src/sys/i386/i386/trap.c:466
#6 0x8023e416 in generic_bcopy ()
#7 0x801f5b65 in ffs_write (ap=0xb892e854) at /usr/src/sys/ufs/ufs/ufs_readwrite.c:547
#8 0x80191451 in union_write (ap=0xb892e898) at vnode_if.h:363
#9 0x8020cca8 in vnode_pager_generic_putpages (vp=0xca66d740, m=0xb892e970, bytecount=8192, flags=12, rtvals=0xb892e93c)
at vnode_if.h:363
#10 0x801912c2 in union_putpages (ap=0xb892e900) at /usr/src/sys/miscfs/union/union_vnops.c:1047
#11 0x8020caca in vnode_pager_putpages (object=0xc4c81958, m=0xb892e970, count=2, sync=12, rtvals=0xb892e93c) at vnode_if.h:1147
#12 0x80209a0f in vm_pageout_flush (mc=0xb892e970, count=2, flags=12) at /usr/src/sys/vm/vm_pager.h:147
#13 0x8020697b in vm_object_page_collect_flush (object=0xc4c81958, p=0x828b23b0, curgeneration=47865, pagerflags=12)
at /usr/src/sys/vm/vm_object.c:806
#14 0x80206559 in vm_object_page_clean (object=0xc4c81958, start=0, end=0, flags=4) at /usr/src/sys/vm/vm_object.c:605
#15 0x80182b08 in vfs_msync (mp=0x8fd6c600, flags=2) at /usr/src/sys/kern/vfs_subr.c:2731
#16 0x80183c80 in sync (p=0x802c5440, uap=0x0) at /usr/src/sys/kern/vfs_syscalls.c:582
#17 0x80152086 in boot (howto=256) at /usr/src/sys/kern/kern_shutdown.c:235
#18 0x8015275d in panic (fmt=0x80275399 "%s") at /usr/src/sys/kern/kern_shutdown.c:595
#19 0x8023fa41 in trap_fatal (frame=0xb892ebc4, eva=0) at /usr/src/sys/i386/i386/trap.c:974
#20 0x8023f6ad in trap_pfault (frame=0xb892ebc4, usermode=0, eva=0) at /usr/src/sys/i386/i386/trap.c:867
#21 0x8023f20b in trap (frame={tf_fs = -1851260904, tf_es = -2146303984, tf_ds = -1989672944, tf_edi = -1464680448, tf_esi = 0,
tf_ebp = -1198330832, tf_isp = -1198330896, tf_ebx = 8192, tf_edx = -1464680448, tf_ecx = 2048, tf_eax = -1464680448,
tf_trapno = 12, tf_err = 0, tf_eip = -2145131498, tf_cs = 8, tf_eflags = 66054, tf_esp = -1198330592, tf_ss = -1198330620})
at /usr/src/sys/i386/i386/trap.c:466
#22 0x8023e416 in generic_bcopy ()
#23 0x801f5b65 in ffs_write (ap=0xb892ecc8) at /usr/src/sys/ufs/ufs/ufs_readwrite.c:547
#24 0x80191451 in union_write (ap=0xb892ed0c) at vnode_if.h:363
#25 0x8020cca8 in vnode_pager_generic_putpages (vp=0xc83f83c0, m=0xb892ede4, bytecount=8192, flags=12, rtvals=0xb892edb0)
at vnode_if.h:363
#26 0x801912c2 in union_putpages (ap=0xb892ed74) at /usr/src/sys/miscfs/union/union_vnops.c:1047
#27 0x8020caca in vnode_pager_putpages (object=0xc7076170, m=0xb892ede4, count=2, sync=12, rtvals=0xb892edb0) at vnode_if.h:1147
#28 0x80209a0f in vm_pageout_flush (mc=0xb892ede4, count=2, flags=12) at /usr/src/sys/vm/vm_pager.h:147
#29 0x8020697b in vm_object_page_collect_flush (object=0xc7076170, p=0x835e4830, curgeneration=25361, pagerflags=12)
at /usr/src/sys/vm/vm_object.c:806
#30 0x80206559 in vm_object_page_clean (object=0xc7076170, start=0, end=0, flags=4) at /usr/src/sys/vm/vm_object.c:605
#31 0x80182b08 in vfs_msync (mp=0x8fd6c600, flags=2) at /usr/src/sys/kern/vfs_subr.c:2731
#32 0x80182ed6 in sync_fsync (ap=0xb892ef7c) at /usr/src/sys/kern/vfs_subr.c:2992
#33 0x801811bf in sched_sync () at vnode_if.h:558
(kgdb) up 7
#7 0x801f5b65 in ffs_write (ap=0xb892e854) at /usr/src/sys/ufs/ufs/ufs_readwrite.c:547
547 error =
(kgdb) list
542
543 size = BLKSIZE(fs, ip, lbn) - bp->b_resid;
544 if (size < xfersize)
545 xfersize = size;
546
547 error =
548 uiomove((char *)bp->b_data + blkoffset, (int)xfersize, uio);
549 if ((ioflag & (IO_VMIO|IO_DIRECT)) &&
550 (LIST_FIRST(&bp->b_dep) == NULL)) {
551 bp->b_flags |= B_RELBUF;
(kgdb) up
#8 0x80191451 in union_write (ap=0xb892e898) at vnode_if.h:363
363 rc = VCALL(vp, VOFFSET(vop_write), &a);
(kgdb) list
358 a.a_desc = VDESC(vop_write);
359 a.a_vp = vp;
360 a.a_uio = uio;
361 a.a_ioflag = ioflag;
362 a.a_cred = cred;
363 rc = VCALL(vp, VOFFSET(vop_write), &a);
364 return (rc);
365 }
366 struct vop_lease_args {
367 struct vnodeop_desc *a_desc;
(kgdb) quit
jupiter# exit
exit
Script done on Tue Jul 27 22:52:07 2004
>How-To-Repeat:
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
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