Date: Sat, 31 Aug 2002 19:48:12 -0700 From: Kris Kennaway <kris@obsecurity.org> To: Kris Kennaway <kris@obsecurity.org> Cc: current@FreeBSD.org, phk@FreeBSD.org Subject: Page faults from bento cluster (Re: Problems reading vmcores) Message-ID: <20020901024812.GA8672@xor.obsecurity.org> In-Reply-To: <20020831212639.GA58028@xor.obsecurity.org> References: <20020831212639.GA58028@xor.obsecurity.org>
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I worked out what was wrong: some of them were very old vmcores that
had never been saved. There's another problem though, because those
machines have all panicked in the past 24 hours, so I don't know where
the remaining dumps went.
Kris
panic: page fault
panic messages:
---
Fatal trap 12: page fault while in kernel mode
fault virtual address = 0x28
fault code = supervisor read, page not present
instruction pointer = 0x8:0xc02012ed
stack pointer = 0x10:0xd7b24b1c
frame pointer = 0x10:0xd7b24b30
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 = 88342 (umount)
trap number = 12
panic: page fault
Uptime: 10h9m31s
Dumping 510 MB
ata0: resetting devices ..
done
16 32 48 64 80 96 112 128 144 160 176 192 208 224 240 256 272 288 304 320 336 352 368 384 400 416 432 448 464 480 496
---
#0 doadump () at /usr/src/sys/kern/kern_shutdown.c:213
213 /usr/src/sys/kern/kern_shutdown.c: No such file or directory.
in /usr/src/sys/kern/kern_shutdown.c
(kgdb) bt
#0 doadump () at /usr/src/sys/kern/kern_shutdown.c:213
#1 0xc0242ed4 in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:345
#2 0xc024310b in panic () at /usr/src/sys/kern/kern_shutdown.c:493
#3 0xc03a86f3 in trap_fatal (frame=0x104, eva=0)
at /usr/src/sys/i386/i386/trap.c:846
#4 0xc03a83d2 in trap_pfault (frame=0xd7b24adc, usermode=0, eva=40)
at /usr/src/sys/i386/i386/trap.c:760
#5 0xc03a7efd in trap (frame=
{tf_fs = -676200424, tf_es = -1071120368, tf_ds = -977731568, tf_edi = 0, tf_esi = -977701728, tf_ebp = -676181200, tf_isp = -676181240, tf_ebx = -676181080, tf_edx = -1006065664, tf_ecx = 0, tf_eax = -676181080, tf_trapno = 12, tf_err = 0, tf_eip = -1071639827, tf_cs = 8, tf_eflags = 66118, tf_esp = -676181080, tf_ss = 104})
at /usr/src/sys/i386/i386/trap.c:446
#6 0xc0399a48 in calltrap () at {standard input}:98
#7 0xc029198d in vflush (mp=0xc4a75400, rootrefs=0, flags=2) at vnode_if.h:309
#8 0xc0200eaa in devfs_unmount (mp=0xc4a75400, mntflags=524288, td=0xc41b29c0)
at /usr/src/sys/fs/devfs/devfs_vfsops.c:130
#9 0xc028d9b4 in dounmount (mp=0xc4a75400, flags=-995666944, td=0xc41b29c0)
at /usr/src/sys/kern/vfs_mount.c:1296
#10 0xc028d79c in unmount (td=0xc41b29c0, uap=0xd7b24d10)
at /usr/src/sys/kern/vfs_mount.c:1239
#11 0xc03a8a31 in syscall (frame=
{tf_fs = 47, tf_es = 47, tf_ds = 47, tf_edi = 134845070, tf_esi = 134951997, tf_ebp = -1077938952, tf_isp = -676180620, tf_ebx = 0, tf_edx = 1, tf_ecx = 3, tf_eax = 22, tf_trapno = 12, tf_err = 2, tf_eip = 134524579, tf_cs = 31, tf_eflags = 514, tf_esp = -1077939076, tf_ss = 47}) at /usr/src/sys/i386/i386/trap.c:1050
#12 0xc0399a9d in Xint0x80_syscall () at {standard input}:140
---Can't read userspace from dump, or kernel process---
panic: page fault
panic messages:
---
Fatal trap 12: page fault while in kernel mode
fault virtual address = 0x28
fault code = supervisor read, page not present
instruction pointer = 0x8:0xc02012ed
stack pointer = 0x10:0xd7b27b1c
frame pointer = 0x10:0xd7b27b30
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 = 50685 (umount)
trap number = 12
panic: page fault
Uptime: 10h24m57s
Dumping 510 MB
ata0: resetting devices ..
done
16 32 48 64 80 96 112 128 144 160 176 192 208 224 240 256 272 288 304 320 336 352 368 384 400 416 432 448 464 480 496
---
#0 doadump () at /usr/src/sys/kern/kern_shutdown.c:213
213 /usr/src/sys/kern/kern_shutdown.c: No such file or directory.
in /usr/src/sys/kern/kern_shutdown.c
(kgdb) bt
#0 doadump () at /usr/src/sys/kern/kern_shutdown.c:213
#1 0xc0242ed4 in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:345
#2 0xc024310b in panic () at /usr/src/sys/kern/kern_shutdown.c:493
#3 0xc03a86f3 in trap_fatal (frame=0x104, eva=0)
at /usr/src/sys/i386/i386/trap.c:846
#4 0xc03a83d2 in trap_pfault (frame=0xd7b27adc, usermode=0, eva=40)
at /usr/src/sys/i386/i386/trap.c:760
#5 0xc03a7efd in trap (frame=
{tf_fs = -676200424, tf_es = -1071120368, tf_ds = -977862640, tf_edi = 0, tf_esi = -977815232, tf_ebp = -676168912, tf_isp = -676168952, tf_ebx = -676168792, tf_edx = -1005847040, tf_ecx = 0, tf_eax = -676168792, tf_trapno = 12, tf_err = 0, tf_eip = -1071639827, tf_cs = 8, tf_eflags = 66118, tf_esp = -676168792, tf_ss = 104})
at /usr/src/sys/i386/i386/trap.c:446
#6 0xc0399a48 in calltrap () at {standard input}:98
#7 0xc029198d in vflush (mp=0xc58d6c00, rootrefs=0, flags=2) at vnode_if.h:309
#8 0xc0200eaa in devfs_unmount (mp=0xc58d6c00, mntflags=524288, td=0xc41b2a80)
at /usr/src/sys/fs/devfs/devfs_vfsops.c:130
#9 0xc028d9b4 in dounmount (mp=0xc58d6c00, flags=-980587520, td=0xc41b2a80)
at /usr/src/sys/kern/vfs_mount.c:1296
#10 0xc028d79c in unmount (td=0xc41b2a80, uap=0xd7b27d10)
at /usr/src/sys/kern/vfs_mount.c:1239
#11 0xc03a8a31 in syscall (frame=
{tf_fs = 47, tf_es = 47, tf_ds = 47, tf_edi = 134845070, tf_esi = 134948925, tf_ebp = -1077938952, tf_isp = -676168332, tf_ebx = 0, tf_edx = 1, tf_ecx = 3, tf_eax = 22, tf_trapno = 0, tf_err = 2, tf_eip = 134524579, tf_cs = 31, tf_eflags = 514, tf_esp = -1077939076, tf_ss = 47}) at /usr/src/sys/i386/i386/trap.c:1050
#12 0xc0399a9d in Xint0x80_syscall () at {standard input}:140
---Can't read userspace from dump, or kernel process---
panic: page fault
panic messages:
---
Fatal trap 12: page fault while in kernel mode
fault virtual address = 0x4
fault code = supervisor read, page not present
instruction pointer = 0x8:0xc021cd13
stack pointer = 0x10:0xda40fa50
frame pointer = 0x10:0xda40fa58
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 = 12649 (sh)
trap number = 12
panic: page fault
Uptime: 14h53m6s
Dumping 510 MB
ata0: resetting devices ..
done
16 32 48 64 80 96 112 128 144 160 176 192 208 224 240 256 272 288 304 320 336 352 368 384 400 416 432 448 464 480 496
---
#0 doadump () at /usr/src/sys/kern/kern_shutdown.c:213
213 /usr/src/sys/kern/kern_shutdown.c: No such file or directory.
in /usr/src/sys/kern/kern_shutdown.c
(kgdb) bt
#0 doadump () at /usr/src/sys/kern/kern_shutdown.c:213
#1 0xc0242ed4 in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:345
#2 0xc024310b in panic () at /usr/src/sys/kern/kern_shutdown.c:493
#3 0xc03a86f3 in trap_fatal (frame=0x104, eva=0)
at /usr/src/sys/i386/i386/trap.c:846
#4 0xc03a83d2 in trap_pfault (frame=0xda40fa10, usermode=0, eva=4)
at /usr/src/sys/i386/i386/trap.c:760
#5 0xc03a7efd in trap (frame=
{tf_fs = 24, tf_es = -633339888, tf_ds = -1069219824, tf_edi = -633275468, tf_esi = -1069110816, tf_ebp = -633275816, tf_isp = -633275844, tf_ebx = 40, tf_edx = 3, tf_ecx = -725475328, tf_eax = 0, tf_trapno = 12, tf_err = 0, tf_eip = -1071526637, tf_cs = 8, tf_eflags = 66199, tf_esp = -725475328, tf_ss = 1})
at /usr/src/sys/i386/i386/trap.c:446
#6 0xc0399a48 in calltrap () at {standard input}:98
#7 0xc021d91f in exec_elf32_imgact (imgp=0xda40fbb4) at imgact_elf.c:607
#8 0xc022a9a2 in execve (td=0xc4fef9c0, uap=0xda40fd10)
at /usr/src/sys/kern/kern_exec.c:280
#9 0xc03a8a31 in syscall (frame=
{tf_fs = 47, tf_es = 47, tf_ds = 47, tf_edi = 135018108, tf_esi = 0, tf_ebp = -1077940704, tf_isp = -633275020, tf_ebx = 135018128, tf_edx = 135018128, tf_ecx = 135018287, tf_eax = 59, tf_trapno = 12, tf_err = 2, tf_eip = 134697908, tf_cs = 31, tf_eflags = 659, tf_esp = -1077940748, tf_ss = 47})
at /usr/src/sys/i386/i386/trap.c:1050
#10 0xc0399a9d in Xint0x80_syscall () at {standard input}:140
---Can't read userspace from dump, or kernel process---
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