We were seeing crashes about once a day between a couple of machines
running the 2.2.9 and then the 2.2.10. We only saw console errors on two
crashes, but I did track the EIP value "c015485d" to the function "T
__kfree_skb". I have backed down to the 2.0.36 kernel and have had no
further problems on either box.
I have no idea how to reproduce the problem. Interestingly though, one
machine stayed up for about one week until I added additional websites to
it. The machine was still usually 80-90% idle with less than a load of 2
but the additional activity seems to have made the problem crop up.
I've included a console message I was provided as well as a dmesg so
you can see the hardware involved.
I would appreciate any help in diagnosing this problem. Thanks!
Jeremy Taylor
transcribed console error:
-----------------------------------------------------------------------
unable to handle kernel paging request @ virtual address 730dcdc
CPO0
EIP 0010[<c015485d>]
Stack Register
Call Trace
Killing Interrupt handler
Kernel panic: attempt to kill idle task
in swapper task not sync
dmesg (from my current 2.0.36 build to show the hardware installed):
----------------------------------------------------------------------
Memory: sized by int13 0e801h
Console: 16 point font, 400 scans
Console: colour VGA+ 80x25, 1 virtual console (max 63)
pcibios_init : BIOS32 Service Directory structure at 0x000fdb80
pcibios_init : BIOS32 Service Directory entry at 0xf73aa
pcibios_init : PCI BIOS revision 2.10 entry at 0xf7c83
Probing PCI hardware.
Calibrating delay loop.. ok - 331.78 BogoMIPS
Memory: 257084k/262144k available (756k kernel code, 384k reserved, 3920k data)
Swansea University Computer Society NET3.035 for Linux 2.0
NET3: Unix domain sockets 0.13 for Linux NET3.035.
Swansea University Computer Society TCP/IP for NET3.034
IP Protocols: ICMP, UDP, TCP
VFS: Diskquotas version dquot_5.6.0 initialized
Checking 386/387 coupling... Ok, fpu using exception 16 error reporting.
Checking 'hlt' instruction... Ok.
Linux version 2.0.36 (root@web2) (gcc version 2.7.2.3) #1 Fri Jul 30 09:09:06 CDT 1999
Starting kswapd v 1.4.2.2
Serial driver version 4.13 with no serial options enabled
tty00 at 0x03f8 (irq = 4) is a 16550A
tty01 at 0x02f8 (irq = 3) is a 16550A
PS/2 auxiliary pointing device detected -- driver installed.
Floppy drive(s): fd0 is 1.44M
FDC 0 is a National Semiconductor PC87306
(scsi0) <Adaptec AIC-7880 Ultra SCSI host adapter> found at PCI 15/0
(scsi0) Wide Channel, SCSI ID=7, 16/255 SCBs
(scsi0) Downloading sequencer code... 419 instructions downloaded
scsi0 : Adaptec AHA274x/284x/294x (EISA/VLB/PCI-Fast SCSI) 5.1.4/3.2.4
<Adaptec AIC-7880 Ultra SCSI host adapter>
scsi : 1 host.
Vendor: QUANTUM Model: QM39100TD-SW Rev: N1K0
Type: Direct-Access ANSI SCSI revision: 02
Detected scsi disk sda at scsi0, channel 0, id 0, lun 0
(scsi0:0:0:0) Synchronous at 40.0 Mbyte/sec, offset 8.
Vendor: QUANTUM Model: QM39100TD-SW Rev: N1K0
Type: Direct-Access ANSI SCSI revision: 02
Detected scsi disk sdb at scsi0, channel 0, id 1, lun 0
(scsi0:0:1:0) Synchronous at 40.0 Mbyte/sec, offset 8.
Vendor: NEC Model: CD-ROM DRIVE:465 Rev: 1.03
Type: CD-ROM ANSI SCSI revision: 02
Detected scsi CD-ROM sr0 at scsi0, channel 0, id 5, lun 0
(scsi0:0:5:0) Synchronous at 20.0 Mbyte/sec, offset 15.
scsi : detected 1 SCSI cdrom 2 SCSI disks total.
SCSI device sda: hdwr sector= 512 bytes. Sectors= 17783249 [8683 MB] [8.7 GB]
SCSI device sdb: hdwr sector= 512 bytes. Sectors= 17783249 [8683 MB] [8.7 GB]
eth0: 3Com 3c905 Boomerang 100baseTx at 0xf0c0, 00:10:5a:9c:bb:6b, IRQ 15
8K word-wide RAM 3:5 Rx:Tx split, autoselect/NWay Autonegotiation interface.
MII transceiver found at address 24, status 786b.
Enabling bus-master transmits and whole-frame receives.
3c59x.c:v0.99E 5/12/98 Donald Becker http://cesdis.gsfc.nasa.gov/linux/drivers/vortex.html
Partition check:
sda: sda1 sda2 sda3 sda4 < sda5 sda6 sda7 sda8 sda9 sda10 sda11 sda12 >
sdb: sdb1
VFS: Mounted root (ext2 filesystem) readonly.
Adding Swap: 104384k swap-space (priority -1)
Adding Swap: 104384k swap-space (priority -2)
Adding Swap: 104384k swap-space (priority -3)
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