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Subject2.1.131 swapping oops
Hi,

Linus made us a challenge to «beat on» the 2.1.131, soon to be 2.2.*.

«Why not?» I thought, having two compiles to do, the kernel itself
(again) and xcdroast-0.96e. Two concurrent compile processes, heavy
multitasking....

Here's what happened; a complete crash. X11 went down, everything
else too after some spasms, I had to power the box off. Below you
find the log recordings of the event.

Dec 8 10:23:27 puma kernel: Unable to handle kernel paging request at virtual address cbfed84c
Dec 8 10:23:27 puma kernel: current->tss.cr3 = 00101000, dr3 = 00101000
Dec 8 10:23:27 puma kernel: *pde = 00000000
Dec 8 10:23:27 puma kernel: Oops: 0002
Dec 8 10:23:27 puma kernel: CPU: 0
Dec 8 10:23:27 puma kernel: EIP: 0010:[<c0128699>]
Dec 8 10:23:27 puma kernel: EFLAGS: 00010246
Dec 8 10:23:27 puma kernel: eax: 00000000 ebx: 00000006 ecx: c155a800 edx: cbfed84c
Dec 8 10:23:27 puma kernel: esi: c155a7a0 edi: 00000000 ebp: c155a800 esp: c000bf8c
Dec 8 10:23:27 puma kernel: ds: 0018 es: 0018 ss: 0018
Dec 8 10:23:27 puma kernel: Process kswapd (pid: 3, process nr: 3, stackpage=c000b000)
Dec 8 10:23:27 puma kernel: Stack: 00003ffc 00000002 00000001 c1e3c000 c011cabe c155a800 c000bfc0 00000006
Dec 8 10:23:27 puma kernel: 00000006 00000000 c000a2c1 00619a02 000003fc c155a1a0 c0121c03 00000006
Dec 8 10:23:27 puma kernel: 00000000 c000a000 00000000 c0121d53 00000000 00000f00 c0099fb0 c0106000

I also give the boot log of this box (syslog & messages), to
give you some idea of what HW & SW is in it:

Dec 7 16:41:44 puma kernel: Linux version 2.1.131 (root@puma) (gcc version 2.8.1) #70 SMP Mon Dec 7 14:26:56 MET 1998
Dec 7 16:41:44 puma kernel: mapped APIC to ffffe000 (002ba000)
Dec 7 16:41:44 puma kernel: mapped IOAPIC to ffffd000 (002bb000)
Dec 7 16:41:44 puma kernel: Detected 233867971 Hz processor.
Dec 7 16:41:44 puma kernel: Console: colour VGA+ 80x50
Dec 7 16:41:44 puma kernel: Calibrating delay loop... 466.94 BogoMIPS
Dec 7 16:41:44 puma kernel: Memory: 62576k/65536k available (1328k kernel code, 416k reserved, 1168k data, 48k init)
Dec 7 16:41:44 puma kernel: POSIX conformance testing by UNIFIX
Dec 7 16:41:44 puma kernel: CPU0: Intel Pentium MMX stepping 03
Dec 7 16:41:44 puma kernel: PCI: PCI BIOS revision 2.10 entry at 0xfb070
Dec 7 16:41:44 puma kernel: PCI: Using configuration type 1
Dec 7 16:41:44 puma kernel: PCI: Probing PCI hardware
Dec 7 16:41:44 puma kernel: Initializing RT netlink socket
Dec 7 16:41:44 puma kernel: Starting kswapd v 1.5
Dec 7 16:41:44 puma kernel: pty: 256 Unix98 ptys configured
Dec 7 16:41:44 puma kernel: RAM disk driver initialized: 16 RAM disks of 0K size
Dec 7 16:41:44 puma kernel: PIIX4: IDE controller on PCI bus 00 dev 39
Dec 7 16:41:44 puma kernel: PIIX4: not 100ative mode: will probe irqs later
Dec 7 16:41:44 puma kernel: ide0: BM-DMA at 0xf000-0xf007, BIOS settings: hda:pio, hdb:pio
Dec 7 16:41:44 puma kernel: ide1: BM-DMA at 0xf008-0xf00f, BIOS settings: hdc:pio, hdd:pio
Dec 7 16:41:44 puma kernel: hda: ST51080A, ATA DISK drive
Dec 7 16:41:44 puma kernel: hdb: QUANTUM FIREBALL ST3.2A, ATA DISK drive
Dec 7 16:41:44 puma kernel: hdc: CR-2600TE, ATAPI CDROM drive
Dec 7 16:41:44 puma kernel: ide2: ports already in use, skipping probe
Dec 7 16:41:44 puma kernel: ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
Dec 7 16:41:44 puma kernel: ide1 at 0x170-0x177,0x376 on irq 15
Dec 7 16:41:44 puma kernel: scsi0 : SCSI host adapter emulation for IDE ATAPI devices
Dec 7 16:41:44 puma kernel: scsi : 1 host.
Dec 7 16:41:44 puma kernel: Vendor: MITSUMI Model: CR-2600TE Rev: 2.25
Dec 7 16:41:44 puma kernel: Type: CD-ROM ANSI SCSI revision: 02
Dec 7 16:41:44 puma kernel: Detected scsi CD-ROM sr0 at scsi0, channel 0, id 0, lun 0
Dec 7 16:41:44 puma kernel: scsi : detected 1 SCSI cdrom total.
Dec 7 16:41:44 puma kernel: sr0: scsi3-mmc drive: 6x/6x writer xa/form2 cdda tray
Dec 7 16:41:44 puma kernel: 3c59x.c:v0.99E 5/12/98 Donald Becker http://cesdis.gsfc.nasa.gov/linux/drivers/vortex.html
Dec 7 16:41:44 puma kernel: Partition check:
Dec 7 16:41:44 puma kernel: hda: hda1 hda2 hda3 hda4
Dec 7 16:41:44 puma kernel: hdb: hdb1 hdb2
Dec 7 16:41:44 puma kernel: VFS: Mounted root (ext2 filesystem) readonly.
Dec 7 16:41:44 puma kernel: Freeing unused kernel memory: 48k freed
Dec 7 16:41:44 puma kernel: ide-scsi: hdc: unsupported command in request queue (0)
Dec 7 16:41:44 puma kernel: end_request: I/O error, dev 16:00 (hdc), sector 64
Dec 7 16:41:44 puma kernel: isofs_read_super: bread failed, dev=16:00, iso_blknum=16, block=32
Dec 7 16:41:44 puma kernel: Unable to identify CD-ROM format.

Dec 7 16:41:43 puma syslogd 1.3-0: restart.
Dec 7 16:41:44 puma kernel: klogd 1.3-0, log source = /proc/kmsg started.
Dec 7 16:41:44 puma kernel: Checking 386/387 coupling... OK, FPU using exception 16 error reporting.
Dec 7 16:41:44 puma kernel: Checking 'hlt' instruction... OK.
Dec 7 16:41:44 puma kernel: Intel Pentium with F0 0F bug - workaround enabled.
Dec 7 16:41:44 puma kernel: SMP motherboard not detected. Using dummy APIC emulation.
Dec 7 16:41:44 puma kernel: Swansea University Computer Society NET3.039 for Linux 2.1
Dec 7 16:41:44 puma kernel: NET3: Unix domain sockets 0.16 for Linux NET3.038.
Dec 7 16:41:44 puma kernel: Swansea University Computer Society TCP/IP for NET3.037
Dec 7 16:41:44 puma kernel: IP Protocols: ICMP, UDP, TCP, IGMP
Dec 7 16:41:44 puma kernel: IPv4 over IPv4 tunneling driver
Dec 7 16:41:44 puma kernel: early initialization of device tunl0 is deferred
Dec 7 16:41:44 puma kernel: Linux IP multicast router 0.06 plus PIM-SM
Dec 7 16:41:44 puma kernel: Serial driver version 4.26 with no serial options enabled
Dec 7 16:41:44 puma kernel: ttyS00 at 0x03f8 (irq = 4) is a 16550A
Dec 7 16:41:44 puma kernel: ttyS01 at 0x02f8 (irq = 3) is a 16550A
Dec 7 16:41:44 puma kernel: ttyS02 at 0x03e8 (irq = 4) is a 16450
Dec 7 16:41:44 puma kernel: ttyS03 at 0x02e8 (irq = 3) is a 16450
Dec 7 16:41:44 puma kernel: Real Time Clock Driver v1.09
Dec 7 16:41:44 puma kernel: loop: registered device at major 7
Dec 7 16:41:44 puma kernel: hda: ST51080A, 1033MB w/256kB Cache, CHS=525/64/63
Dec 7 16:41:44 puma kernel: hdb: QUANTUM FIREBALL ST3.2A, 3079MB w/81kB Cache, CHS=6256/16/63, UDMA
Dec 7 16:41:44 puma kernel: Floppy drive(s): fd0 is 1.44M, fd1 is 1.2M
Dec 7 16:41:44 puma kernel: FDC 0 is a post-1991 82077
Dec 7 16:41:44 puma kernel: Uniform CDROM driver Revision: 2.50
Dec 7 16:41:44 puma kernel: PPP: version 2.3.3 (demand dialling)
Dec 7 16:41:44 puma kernel: TCP compression code copyright 1989 Regents of the University of California
Dec 7 16:41:44 puma kernel: PPP line discipline registered.
Dec 7 16:41:44 puma kernel: SLIP: version 0.8.4-NET3.019-NEWTTY (dynamic channels, max=256).
Dec 7 16:41:44 puma kernel: eth0: 3Com 3c590 Vortex 10Mbps at 0x6500, 00:20:af:f2:eb:d8, IRQ 9
Dec 7 16:41:44 puma kernel: 32K byte-wide RAM 1:1 Rx:Tx split, autoselect/10baseT interface.
Dec 7 16:41:44 puma kernel: eth0: Overriding PCI latency timer (CFLT) setting of 32, new value is 248.
Dec 7 16:41:44 puma kernel: NTFS version 980101
Dec 7 16:41:44 puma kernel: Adding Swap: 34268k swap-space (priority -1)
Dec 7 16:41:44 puma kernel: sr0: CDROM not ready. Make sure there is a disc in the drive.
Dec 7 16:41:44 puma kernel: cdrom: open failed.

Hope this posting might be of some help to somebody in the
development process, not just annoyance. ;-P

Further info on request, of course.

Keep up the good work!


Cheers,
-- Jon

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