* 2.4.18 cat /proc/219/cmdline => segfaults ; ps aux => oops
@ 2002-05-30 12:47 archi2k
0 siblings, 0 replies; only message in thread
From: archi2k @ 2002-05-30 12:47 UTC (permalink / raw)
To: linux-kernel, archi2k
Hi all,
dunno why, but I wasn't able to ps aux one of my machines
this morning (woody + unpatched virgin 2.4.18 kernel):
ps aux seg fault. Same pb with top, etc...
After a little more investigation, I found that I
couldn't cat /proc/219/cmdline (sshd process).
I was still able to use sshd and other services on the
box, though.
Anyway, lots of oops on my syslog output.
Here is the 2 first ones, and various stuff.
If you think somethin' else is missing to my report
please ask me for it.
Cheers
a2k
Please cc me, I'm not on the list
Note: Uptime was 3 days when it happened.
This box ran potato/kernel.2.2.x without any
problem (an with big uptimes)
I hade to upgrade because of LVM and large files.
********* VARIOUS (maybe useful, maybe not) STUFF***************
maia:/home/misterfx# cd /proc/
maia:/proc# ls
1 169 20447 20653 211 288 bus kcore stat
11335 176 20448 20654 216 289 cmdline kmsg swaps
11400 186 20449 20655 219 3 cpuinfo loadavg sys
12753 191 20460 20656 222 4 devices locks sysvipc
12755 2 20479 20657 22908 5 dma lvm tty
12757 20373 20644 20658 24605 6 driver meminfo uptime
12758 20374 20645 20659 24734 6579 execdomains misc version
12773 20380 20646 20660 24960 6804 filesystems mounts
12780 20383 20647 20661 25120 6965 fs net
12781 20442 20648 20662 25121 7 ide partitions
12782 20443 20649 20667 279 7194 interrupts pci
15347 20444 20650 20671 281 7197 iomem scsi
163 20445 20651 20672 283 8 ioports self
167 20446 20652 209 285 apm irq slabinfo
maia:/proc# cat /proc/219/cmdline
Segmentation fault
maia:/proc# /etc/init.d/sshd restart
Stopping ssh daemon: sshd
<blocked>
[1]+ Stopped /etc/init.d/sshd restart
maia:/proc#
maia:/proc#
maia:/proc# ps aux
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
root 1 0.0 0.0 1272 436 ? S May26 0:04 init [2]
root 2 0.0 0.0 0 0 ? SW May26 0:00 [keventd]
root 3 0.0 0.0 0 0 ? SW May26 0:00 [kapmd]
root 4 0.0 0.0 0 0 ? SWN May26 0:00 [ksoftirqd_CPU0]
root 5 0.0 0.0 0 0 ? Z May26 3:27 [kswapd <defunct>
root 6 0.0 0.0 0 0 ? SW May26 0:04 [bdflush]
root 7 0.0 0.0 0 0 ? SW May26 0:07 [kupdated]
root 8 0.0 0.0 0 0 ? SW May26 0:00 [scsi_eh_0]
root 163 0.0 0.1 1344 544 ? S May26 0:00 /sbin/syslogd
root 167 0.0 0.1 1436 564 ? S May26 0:00 /usr/local/sbin/s
root 169 0.0 0.0 1780 488 ? S May26 0:00 /sbin/klogd
root 176 0.0 0.1 1996 560 ttyS0 S May26 0:00 /usr/sbin/pppd pe
root 186 0.0 0.3 1668 1660 ? SL May26 0:00 /usr/local/bin/nt
root 191 0.0 0.0 1248 80 ? S May26 0:00 /usr/sbin/inetd
root 209 0.0 0.0 1328 4 ? S May26 0:00 /sbin/upsmon
nut 211 0.0 0.0 1464 152 ? S May26 0:00 /sbin/upsmon
Segmentation fault
************* FIRST OOPS ****************
maia:/var/log/maia/2002/05/30# ksymoops -K -L -O -m /boot/System.map-2.4.18mfx1 < /tmp/uche
ksymoops 2.4.5 on i686 2.4.18mfx1. Options used
-V (default)
-K (specified)
-L (specified)
-O (specified)
-m /boot/System.map-2.4.18mfx1 (specified)
c011e97a
00000000
Oops: 0000
CPU: 0
EIP: 0010:[<c011e97a>] Not tainted
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010206
eax: 090d01e8 ebx: bffff000 ecx: 00000000 edx: 090d0200
esi: c6e819c0 edi: bffffeec ebp: bffff000 esp: c7667eb8
ds: 0018 es: 0018 ss: 0018
Process top (pid: 15000, stackpage=c7667000)
Stack: 00000000 c6e819c0 c011ea6c c6e819c0 bffff000 00000000 c6e819c0 bffffeec
c7666000 df59ea40 c011d092 c6e819c0 bffffeec 00000000 c6e819c0 d58c9000
d58c9000 00000010 c0117679 c7666000 c6e819c0 bffffeec 00000001 00000000
Call Trace: [<c011ea6c>] [<c011d092>] [<c0117679>] [<c0146d39>] [<c0146f8a>]
[<c012b0d6>] [<c0106c5b>]
Code: 39 5a f0 76 f1 89 c1 39 5a ec 77 e2 85 c9 74 03 89 4e 08 89
>>EIP; c011e97a <find_vma+3a/60> <=====
>>eax; 090d01e8 Before first symbol
>>ebx; bffff000 Before first symbol
>>edx; 090d0200 Before first symbol
>>esi; c6e819c0 <END_OF_CODE+6bbf90c/????>
>>edi; bffffeec Before first symbol
>>ebp; bffff000 Before first symbol
>>esp; c7667eb8 <END_OF_CODE+73a5e04/????>
Trace; c011ea6c <find_extend_vma+1c/b0>
Trace; c011d092 <get_user_pages+52/180>
Trace; c0117679 <access_process_vm+109/150>
Trace; c0146d39 <proc_pid_cmdline+49/e0>
Trace; c0146f8a <proc_info_read+5a/120>
Trace; c012b0d6 <sys_read+96/f0>
Trace; c0106c5b <system_call+33/38>
Code; c011e97a <find_vma+3a/60>
00000000 <_EIP>:
Code; c011e97a <find_vma+3a/60> <=====
0: 39 5a f0 cmp %ebx,0xfffffff0(%edx) <=====
Code; c011e97d <find_vma+3d/60>
3: 76 f1 jbe fffffff6 <_EIP+0xfffffff6> c011e970 <find_vma+30/60>
Code; c011e97f <find_vma+3f/60>
5: 89 c1 mov %eax,%ecx
Code; c011e981 <find_vma+41/60>
7: 39 5a ec cmp %ebx,0xffffffec(%edx)
Code; c011e984 <find_vma+44/60>
a: 77 e2 ja ffffffee <_EIP+0xffffffee> c011e968 <find_vma+28/60>
Code; c011e986 <find_vma+46/60>
c: 85 c9 test %ecx,%ecx
Code; c011e988 <find_vma+48/60>
e: 74 03 je 13 <_EIP+0x13> c011e98d <find_vma+4d/60>
Code; c011e98a <find_vma+4a/60>
10: 89 4e 08 mov %ecx,0x8(%esi)
Code; c011e98d <find_vma+4d/60>
13: 89 00 mov %eax,(%eax)
************* END OF FIRST OOPS *****************
************* SECOND OOPS ***********************
maia:/home/misterfx# ksymoops -K -L -O -m /boot/System.map-2.4.18 < /tmp/uic
ksymoops 2.4.5 on i686 2.4.18. Options used
-V (default)
-K (specified)
-L (specified)
-O (specified)
-m /boot/System.map-2.4.18mfx1 (specified)
Invalid operand: 0000
CPU: 0
EIP: 0010:[<c0125652>] Not tainted
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010206
eax: 08040000 ebx: 0804b000 ecx: 0804b000 edx: c1925000
esi: dfe3e140 edi: 00000001 ebp: dfd5a12c esp: c1837efc
ds: 0018 es: 0018 ss: 0018
Process kswapd (pid: 5, stackpage=c1837000)
Stack: 00000000 c1561200 0000001a ffffffff 0804b000 08448000 c1836000 04974047
00000001 0804b000 c1925084 0804b000 08400000 08040000 c1925080 d9e4fac0
00000012 c1836000 dfe3e140 c02479e8 00677400 c0125c08 00000020 000001d0
Call Trace: [<c0125c08>] [<c0125db6>] [<c0125e2c>] [<c0125ec3>] [<c0125f26>]
[<c012603d>] [<c01054e8>]
Code: 0f 0b 89 4c 24 30 89 fb 8b 54 24 38 8b 74 24 34 89 54 24 28
>>EIP; c0125652 <swap_out+122/470> <=====
>>eax; 08040000 Before first symbol
>>ebx; 0804b000 Before first symbol
>>ecx; 0804b000 Before first symbol
>>edx; c1925000 <END_OF_CODE+1662f4c/????>
>>esi; dfe3e140 <END_OF_CODE+1fb7c08c/????>
>>ebp; dfd5a12c <END_OF_CODE+1fa98078/????>
>>esp; c1837efc <END_OF_CODE+1575e48/????>
Trace; c0125c08 <shrink_cache+268/2f0>
Trace; c0125db6 <shrink_caches+56/90>
Trace; c0125e2c <try_to_free_pages+3c/60>
Trace; c0125ec3 <kswapd_balance_pgdat+43/90>
Trace; c0125f26 <kswapd_balance+16/30>
Trace; c012603d <kswapd+9d/c0>
Trace; c01054e8 <kernel_thread+28/40>
Code; c0125652 <swap_out+122/470>
00000000 <_EIP>:
Code; c0125652 <swap_out+122/470> <=====
0: 0f 0b ud2a <=====
Code; c0125654 <swap_out+124/470>
2: 89 4c 24 30 mov %ecx,0x30(%esp,1)
Code; c0125658 <swap_out+128/470>
6: 89 fb mov %edi,%ebx
Code; c012565a <swap_out+12a/470>
8: 8b 54 24 38 mov 0x38(%esp,1),%edx
Code; c012565e <swap_out+12e/470>
c: 8b 74 24 34 mov 0x34(%esp,1),%esi
Code; c0125662 <swap_out+132/470>
10: 89 54 24 28 mov %edx,0x28(%esp,1)
************* EO SECOND OOPS ****************
dmesg :
Linux version 2.4.18mfx1 (root@maia) (gcc version 2.95.4 20011002 (Debian prerelease)) #1 Sun May 26 13:59:43 CEST 2002
BIOS-provided physical RAM map:
BIOS-e820: 0000000000000000 - 000000000009f800 (usable)
BIOS-e820: 000000000009f800 - 00000000000a0000 (reserved)
BIOS-e820: 00000000000f0000 - 0000000000100000 (reserved)
BIOS-e820: 0000000000100000 - 000000001ffec000 (usable)
BIOS-e820: 000000001ffec000 - 000000001ffef000 (ACPI data)
BIOS-e820: 000000001ffef000 - 000000001ffff000 (reserved)
BIOS-e820: 000000001ffff000 - 0000000020000000 (ACPI NVS)
BIOS-e820: 00000000ffff0000 - 0000000100000000 (reserved)
On node 0 totalpages: 131052
zone(0): 4096 pages.
zone(1): 126956 pages.
zone(2): 0 pages.
Kernel command line: auto BOOT_IMAGE=.o00o. ro root=303
Initializing CPU#0
Detected 1343.053 MHz processor.
Console: colour VGA+ 80x25
Calibrating delay loop... 2680.42 BogoMIPS
Memory: 513784k/524208k available (1100k kernel code, 10036k reserved, 282k data, 208k init, 0k highmem)
Dentry-cache hash table entries: 65536 (order: 7, 524288 bytes)
Inode-cache hash table entries: 32768 (order: 6, 262144 bytes)
Mount-cache hash table entries: 8192 (order: 4, 65536 bytes)
Buffer-cache hash table entries: 32768 (order: 5, 131072 bytes)
Page-cache hash table entries: 131072 (order: 7, 524288 bytes)
CPU: Before vendor init, caps: 0383f9ff c1cbf9ff 00000000, vendor = 2
CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 bytes/line)
CPU: L2 Cache: 256K (64 bytes/line)
CPU: After vendor init, caps: 0383f9ff c1cbf9ff 00000000 00000000
Intel machine check architecture supported.
Intel machine check reporting enabled on CPU#0.
CPU: After generic, caps: 0383f9ff c1cbf9ff 00000000 00000000
CPU: Common caps: 0383f9ff c1cbf9ff 00000000 00000000
CPU: AMD Athlon(TM) XP1500+ stepping 02
Enabling fast FPU save and restore... done.
Enabling unmasked SIMD FPU exception support... done.
Checking 'hlt' instruction... OK.
POSIX conformance testing by UNIFIX
PCI: PCI BIOS revision 2.10 entry at 0xf0df0, last bus=1
PCI: Using configuration type 1
PCI: Probing PCI hardware
PCI: Using IRQ router VIA [1106/3074] at 00:11.0
Linux NET4.0 for Linux 2.4
Based upon Swansea University Computer Society NET3.039
Initializing RT netlink socket
apm: BIOS version 1.2 Flags 0x03 (Driver version 1.16)
Starting kswapd
VFS: Diskquotas version dquot_6.4.0 initialized
Detected PS/2 Mouse Port.
pty: 256 Unix98 ptys configured
Serial driver version 5.05c (2001-07-08) with MANY_PORTS SHARE_IRQ SERIAL_PCI enabled
ttyS00 at 0x03f8 (irq = 4) is a 16550A
ttyS01 at 0x02f8 (irq = 3) is a 16550A
block: 128 slots per queue, batch=32
RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize
Uniform Multi-Platform E-IDE driver Revision: 6.31
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
VP_IDE: IDE controller on PCI bus 00 dev 89
VP_IDE: chipset revision 6
VP_IDE: not 100% native mode: will probe irqs later
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
VP_IDE: VIA vt8233 (rev 00) IDE UDMA100 controller on pci00:11.1
ide0: BM-DMA at 0xb000-0xb007, BIOS settings: hda:DMA, hdb:pio
ide1: BM-DMA at 0xb008-0xb00f, BIOS settings: hdc:DMA, hdd:pio
hda: IC35L040AVER07-0, ATA DISK drive
hdc: ASUS CD-S520/A, ATAPI CD/DVD-ROM drive
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
ide1 at 0x170-0x177,0x376 on irq 15
hda: 80418240 sectors (41174 MB) w/1916KiB Cache, CHS=5005/255/63, UDMA(100)
hdc: ATAPI 52X CD-ROM drive, 128kB Cache, UDMA(33)
Uniform CD-ROM driver Revision: 3.12
Partition check:
hda: hda1 hda2 hda3 hda4 < hda5 hda6 hda7 hda8 hda9 hda10 >
floppy0: no floppy controllers found
loop: loaded (max 8 devices)
PCI: Found IRQ 10 for device 00:0f.0
3c59x: Donald Becker and others. www.scyld.com/network/vortex.html
00:0f.0: 3Com PCI 3c905C Tornado at 0xb400. Vers LK1.1.16
PPP generic driver version 2.4.1
PPP Deflate Compression module registered
PPP BSD Compression module registered
SCSI subsystem driver Revision: 1.00
PCI: Found IRQ 11 for device 00:0d.0
PCI: Sharing IRQ 11 with 01:00.0
scsi0 : Adaptec AIC7XXX EISA/VLB/PCI SCSI HBA DRIVER, Rev 6.2.4
<Adaptec 29160 Ultra160 SCSI adapter>
aic7892: Ultra160 Wide Channel A, SCSI Id=7, 32/253 SCBs
Vendor: IBM Model: DDYS-T36950N Rev: S96H
Type: Direct-Access ANSI SCSI revision: 03
(scsi0:A:14): 160.000MB/s transfers (80.000MHz DT, offset 63, 16bit)
scsi0:A:14:0: Tagged Queuing enabled. Depth 253
scsi1 : SCSI host adapter emulation for IDE ATAPI devices
Attached scsi disk sda at scsi0, channel 0, id 14, lun 0
SCSI device sda: 71687340 512-byte hdwr sectors (36704 MB)
sda: sda1 sda2 sda3 sda4 < sda5 sda6 sda7 sda8 sda9 >
LVM version 1.0.1-rc4(ish)(03/10/2001)
NET4: Linux TCP/IP 1.0 for NET4.0
IP Protocols: ICMP, UDP, TCP, IGMP
IP: routing cache hash table of 4096 buckets, 32Kbytes
TCP: Hash tables configured (established 32768 bind 32768)
ip_conntrack (4095 buckets, 32760 max)
ip_tables: (C) 2000-2002 Netfilter core team
NET4: Unix domain sockets 1.0/SMP for Linux NET4.0.
VFS: Mounted root (ext2 filesystem) readonly.
Freeing unused kernel memory: 208k freed
Adding Swap: 498004k swap-space (priority -1)
-EOF-
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