Date: Wed, 14 Feb 2007 14:08:21 +0200 From: "Albert" <alb@kdtu.kr.ua> To: freebsd-bugs@FreeBSD.org Subject: freebsd-bugs Message-ID: <002b01c75030$d1f587d0$960a0a0a@kdtu.kr.ua>
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internetgateway# kgdb kernel.debug /var/crash/vmcore.8
[GDB will not be able to debug user-mode threads: =
/usr/lib/libthread_db.so: Undefined symbol "ps_pglobal_lookup"]
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This GDB was configured as "i386-marcel-freebsd".
Unread portion of the kernel message buffer:
Fatal trap 12: page fault while in kernel mode
fault virtual address =3D 0x4563254e
fault code =3D supervisor read, page not present
instruction pointer =3D 0x20:0xc067d6ec
stack pointer =3D 0x28:0xeefbca04
frame pointer =3D 0x28:0xeefbca30
code segment =3D base 0x0, limit 0xfffff, type 0x1b
=3D DPL 0, pres 1, def32 1, gran 1
processor eflags =3D interrupt enabled, resume, IOPL =3D 0
current process =3D 60372 (stargazer)
trap number =3D 12
panic: page fault
Uptime: 4d2h6m4s
Dumping 991 MB (2 chunks)
chunk 0: 1MB (160 pages) ... ok
chunk 1: 991MB (253680 pages) 975 959 943 927 911 895 879 863 847 831 =
815 799 783 767 751 735 719 703 687 671 655 639 623 607 591 575 559 543 =
527 511 495 479 463 447 431 415 399 383 367 351 335 319 303 287 271 255 =
239 223 207 191 175 159 143 127 111 95 79 63 47 31 15
#0 doadump () at pcpu.h:165
165 __asm __volatile("movl %%fs:0,%0" : "=3Dr" (td));
(kgdb) list *0xc067d6ec
0xc067d6ec is in brelse (../../../kern/vfs_bio.c:1200).
1195 * the commit state and we cannot afford to lose the =
buffer. If the
1196 * buffer has a background write in progress, we need to =
keep it
1197 * around to prevent it from being reconstituted and =
starting a second
1198 * background write.
1199 */
1200 if ((bp->b_flags & B_VMIO)
1201 && !(bp->b_vp->v_mount !=3D NULL &&
1202 (bp->b_vp->v_mount->mnt_vfc->vfc_flags & =
VFCF_NETWORK) !=3D 0 &&
1203 !vn_isdisk(bp->b_vp, NULL) &&
1204 (bp->b_flags & B_DELWRI))
(kgdb) backtrace
#0 doadump () at pcpu.h:165
#1 0xc0638552 in boot (howto=3D260) at =
../../../kern/kern_shutdown.c:399
#2 0xc06387e8 in panic (fmt=3D0xc085a72b "%s") at =
../../../kern/kern_shutdown.c:555
#3 0xc0813880 in trap_fatal (frame=3D0xeefbc9c4, eva=3D1164125518) at =
../../../i386/i386/trap.c:831
#4 0xc08135eb in trap_pfault (frame=3D0xeefbc9c4, usermode=3D0, =
eva=3D1164125518) at ../../../i386/i386/trap.c:742
#5 0xc0813229 in trap (frame=3D
{tf_fs =3D 8, tf_es =3D 40, tf_ds =3D 40, tf_edi =3D 512, tf_esi =
=3D -1030038300, tf_ebp =3D -285488592, tf_isp =3D -285488656, tf_ebx =
=3D -700536128, tf_edx =3D -1030015936, tf_ecx =3D -1029999552, tf_eax =
=3D 1164125506, tf_trapno =3D 12, tf_err =3D 0, tf_eip =3D -1066936596, =
tf_cs =3D 32, tf_eflags =3D 66054, tf_esp =3D 0, tf_ss =3D -285488624}) =
at ../../../i386/i386/trap.c:432
#6 0xc0802a1a in calltrap () at ../../../i386/i386/exception.s:139
#7 0xc067d6ec in brelse (bp=3D0xd63eaac0) at =
../../../kern/vfs_bio.c:1200
#8 0xc07996cf in ufs_lookup (ap=3D0xeefbcb18) at =
../../../ufs/ufs/ufs_lookup.c:462
#9 0xc08229b4 in VOP_CACHEDLOOKUP_APV (vop=3D0x45632542, =
a=3D0xc29b3440) at vnode_if.c:150
#10 0xc0682fee in vfs_cache_lookup (ap=3D0x45632542) at vnode_if.h:82
#11 0xc0822943 in VOP_LOOKUP_APV (vop=3D0xc090a060, a=3D0xeefbcbb0) at =
vnode_if.c:99
#12 0xc068757d in lookup (ndp=3D0xeefbcc6c) at vnode_if.h:56
#13 0xc0686ebe in namei (ndp=3D0xeefbcc6c) at =
../../../kern/vfs_lookup.c:203
#14 0xc0693c7a in kern_unlink (td=3D0xc2768480, path=3D0x8cb4e0c =
<Address 0x8cb4e0c out of bounds>, pathseg=3DUIO_USERSPACE)
at ../../../kern/vfs_syscalls.c:1637
#15 0xc0693c3e in unlink (td=3D0xc2768480, uap=3D0x45632542) at =
../../../kern/vfs_syscalls.c:1621
#16 0xc0813b97 in syscall (frame=3D
{tf_fs =3D 59, tf_es =3D 59, tf_ds =3D 59, tf_edi =3D 671998600, =
tf_esi =3D -1083191296, tf_ebp =3D -1082143592, tf_isp =3D -285487772, =
tf_ebx =3D 674391780, tf_edx =3D 1, tf_ecx =3D 0, tf_eax =3D 10, =
tf_trapno =3D 0, tf_err =3D 2, tf_eip =3D 672687987, tf_cs =3D 51, =
tf_eflags =3D 646, tf_esp =3D -1082143636, tf_ss =3D 59}) at =
../../../i386/i386/trap.c:976
#17 0xc0802a6f in Xint0x80_syscall () at =
../../../i386/i386/exception.s:200
#18 0x00000033 in ?? ()
Previous frame inner to this frame (corrupt stack?)
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