[BUG]: 2.4.1-pre8: Wierd lockup with /proc based functions (?)

[Shawn Starr]

Just a while ago, my system just started acting funny. I couldn't use w,
top, ps, and then some of my X applications started to freeze too.
I couldn't even kill those hung processes because they'd hang too. So
When i tried to restart ctrl+alt+del, it did not kill the hung processes
and i had to hard restart.

I dont know what triggered it but here's my dmesg and motherboard
information:

Motherboard: AcerOPEN AP53/AX - Latest flash bios: R3.A0 (1997)
RAM: 64MB EDO: Kingston, 60ns
Chipset: 430HX
Parallel port: SPP/ECP/EPP
COM ports: 16C550
AMI Bios
RTC & Battery: Dallas DS12887A - Ds12B887 compatable
(512KB?) Pipeline burst cache

*NOTE: This Pentium 200Mhz oddly has USB support (disabled right now).
It has first generation USB. 2 ports.

Inspecting /boot/System.map
Loaded 15061 symbols from /boot/System.map.
Symbols match kernel version 2.4.1.
Error opening /dev/kmem
Error adding kernel module table entry.
Linux version 2.4.1-pre8 (root@coredump) (gcc version 2.95.2 19991024
(release)) #1 Wed Jan 17 16:52:06 EST 2001)
BIOS-provided physical RAM map:
BIOS-e820: 000000000009fc00 @ 0000000000000000 (usable)
BIOS-e820: 0000000000000400 @ 000000000009fc00 (reserved)
BIOS-e820: 0000000000020000 @ 00000000000e0000 (reserved)
BIOS-e820: 0000000003f00000 @ 0000000000100000 (usable)
BIOS-e820: 0000000000001000 @ 00000000fec00000 (reserved)
BIOS-e820: 0000000000001000 @ 00000000fee00000 (reserved)
BIOS-e820: 0000000000020000 @ 00000000fffe0000 (reserved)
On node 0 totalpages: 16384
zone(0): 4096 pages.
zone(1): 12288 pages.
zone(2): 0 pages.
Kernel command line: BOOT_IMAGE=newlinux ro root=301 hdc=scsi
ide_setup: hdc=scsi
Initializing CPU#0
Detected 199.433 MHz processor.
Console: colour VGA+ 80x25
Calibrating delay loop... 398.13 BogoMIPS
Memory: 61976k/65536k available (1122k kernel code, 3172k reserved, 400k
data, 220k init, 0k highmem)
Dentry-cache hash table entries: 8192 (order: 4, 65536 bytes)
Buffer-cache hash table entries: 4096 (order: 2, 16384 bytes)
Page-cache hash table entries: 16384 (order: 4, 65536 bytes)
Inode-cache hash table entries: 4096 (order: 3, 32768 bytes)
CPU: Before vendor init, caps: 000001bf 00000000 00000000, vendor = 0
Intel Pentium with F0 0F bug - workaround enabled.
CPU: After vendor init, caps: 000001bf 00000000 00000000 00000000
CPU: After generic, caps: 000001bf 00000000 00000000 00000000
CPU: Common caps: 000001bf 00000000 00000000 00000000
CPU: Intel Pentium 75 - 200 stepping 0c
Checking 'hlt' instruction... OK.
POSIX conformance testing by UNIFIX
PCI: PCI BIOS revision 2.10 entry at 0xfdb91, last bus=0
PCI: Using configuration type 1
PCI: Probing PCI hardware
PCI: Cannot allocate resource region 0 of device 00:09.0
   got res[10000000:10ffffff] for resource 0 of ATI Technologies Inc 3D
Rage I/II 215GT [Mach64 GT]
Limiting direct PCI/PCI transfers.
Activating ISA DMA hang workarounds.
isapnp: Scanning for Pnp cards...
isapnp: Calling quirk for 01:00
isapnp: SB audio device quirk - increasing port range
isapnp: Calling quirk for 01:02
isapnp: AWE32 quirk - adding two ports
isapnp: Card 'Creative SB32 PnP'
isapnp: 1 Plug & Play card detected total
Linux NET4.0 for Linux 2.4
Based upon Swansea University Computer Society NET3.039
Initializing RT netlink socket
Starting kswapd v1.8
parport0: PC-style at 0x378 [PCSPP,TRISTATE,EPP]
parport0: cpp_daisy: aa5500ff(98)
parport0: assign_addrs: aa5500ff(98)
parport0: Printer, HEWLETT-PACKARD DESKJET
pty: 256 Unix98 ptys configured
lp0: using parport0 (polling).
block: queued sectors max/low 41104kB/30828kB, 128 slots per queue
Uniform Multi-Platform E-IDE driver Revision: 6.31
ide: Assuming 33MHz system bus speed for PIO modes; override with
idebus=xx
PIIX3: IDE controller on PCI bus 00 dev 39
PIIX3: chipset revision 0
PIIX3: not 100%% native mode: will probe irqs later
    ide0: BM-DMA at 0xffa0-0xffa7, BIOS settings: hda:DMA, hdb:DMA
    ide1: BM-DMA at 0xffa8-0xffaf, BIOS settings: hdc:pio, hdd:pio
hda: FUJITSU MPE3064AT, ATA DISK drive
hdb: WDC AC32500H, ATA DISK drive
hdc: YAMAHA CRW2100E, ATAPI CD/DVD-ROM drive
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
ide1 at 0x170-0x177,0x376 on irq 15
hda: 12672450 sectors (6488 MB) w/512KiB Cache, CHS=788/255/63, (U)DMA
hdb: Disabling (U)DMA for WDC AC32500H
hdb: 4999680 sectors (2560 MB) w/128KiB Cache, CHS=620/128/63
ide-cd: passing drive hdc to ide-scsi emulation.
Partition check:
 hda: hda1 hda2
 hdb: hdb1 hdb2
Floppy drive(s): fd0 is 1.44M
FDC 0 is a post-1991 82077
Serial driver version 5.02 (2000-08-09) with MANY_PORTS SHARE_IRQ
SERIAL_PCI ISAPNP enabled
ttyS00 at 0x03f8 (irq = 4) is a 16550A
ttyS01 at 0x02f8 (irq = 3) is a 16550A
Real Time Clock Driver v1.10d
3c59x.c:LK1.1.12 06 Jan 2000  Donald Becker and others.
http://www.scyld.com/network/vortex.html $Revision: 1.102.2.46 $
See Documentation/networking/vortex.txt
eth0: 3Com PCI 3c900 Cyclone 10Mbps TPO at 0xe880,  00:50:da:80:b5:74,
IRQ 9
  product code 'WQ' rev 00.4 date 11-10-99
  8K byte-wide RAM 5:3 Rx:Tx split, 10baseT interface.
  Enabling bus-master transmits and whole-frame receives.
SCSI subsystem driver Revision: 1.00
scsi0 : SCSI host adapter emulation for IDE ATAPI devices
  Vendor: YAMAHA    Model: CRW2100E          Rev: 1.0H
  Type:   CD-ROM                             ANSI SCSI revision: 02
Soundblaster audio driver Copyright (C) by Hannu Savolainen 1993-1996
sb: Creative SB32 PnP detected
sb: ISAPnP reports 'Creative SB32 PnP' at i/o 0x220, irq 5, dma 1, 5
<Sound Blaster 16 (4.13)> at 0x220 irq 5 dma 1,5
<Sound Blaster 16> at 0x330 irq 5 dma 0,0
sb: 1 Soundblaster PnP card(s) found.
ISAPnP reports AWE32 WaveTable at i/o 0x620
<SoundBlaster EMU8000 (RAM0k)>
NET4: Linux TCP/IP 1.0 for NET4.0
IP Protocols: ICMP, UDP, TCP
IP: routing cache hash table of 512 buckets, 4Kbytes
TCP: Hash tables configured (established 4096 bind 4096)
ip_tables: (c)2000 Netfilter core team
NET4: Unix domain sockets 1.0/SMP for Linux NET4.0.
reiserfs: checking transaction log (device 03:01) ...
Using r5 hash to sort names
ReiserFS version 3.6.25
VFS: Mounted root (reiserfs filesystem) readonly.
Freeing unused kernel memory: 220k freed
Adding Swap: 64252k swap-space (priority -1)
eth0: using default media 10baseT

Shawn.