Bug#644212: linux-image-2.6.32-5-amd64: kernel BUG at kernel/exit.c:1035: invalid opcode: 0000

2011-10-04 Thread Faidon Liambotis 
On Tue, Oct 04, 2011 at 03:29:50AM +0100, Ben Hutchings wrote:
 On Tue, 2011-10-04 at 03:51 +0300, Faidon Liambotis wrote:
  Package: linux-2.6
  Version: 2.6.32-35
  Severity: normal
  
  The stack trace can be seen below; if it matters, note that the machine
  a) is running under KVM, b) has relatively high CPU  I/O load c) it's
  the first time it has BUGed, although it has been running with 2.6.32
  since April and with 2.6.32-35 since early August.
 [...]
 
 Well this is pretty damn weird.  This BUG message means that the
 scheduler reselected a task to run after it exited (i.e. it was a
 zombie).
 
 I can't find any related bug reports or fixes.  I'm afraid we are
 unlikely to be able to progress this unless it is reproducible.

Yeah, I figured it was weird... I don't think I'll be able to reproduce
this, it wasn't even triggered by user action (the process that crashed
it is a daemon) — and as I said, it's the first time it's being doing
this in quite a while.

If you have any ideas on how to reproduce it or get more info, I'm all
ears :-) The machine is, surprisingly, still up and running although
I'll have to reboot it (just to be safe) soon.

Thanks,
Faidon



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Bug#644212: linux-image-2.6.32-5-amd64: kernel BUG at kernel/exit.c:1035: invalid opcode: 0000

2011-10-03 Thread Faidon Liambotis 
Package: linux-2.6
Version: 2.6.32-35
Severity: normal

The stack trace can be seen below; if it matters, note that the machine
a) is running under KVM, b) has relatively high CPU  I/O load c) it's
the first time it has BUGed, although it has been running with 2.6.32
since April and with 2.6.32-35 since early August.

Thanks,
Faidon

-- Package-specific info:
** Version:
Linux version 2.6.32-5-amd64 (Debian 2.6.32-35) (da...@debian.org) (gcc version 
4.3.5 (Debian 4.3.5-4) ) #1 SMP Tue Jun 14 09:42:28 UTC 2011

** Command line:
root=/dev/vda1 ro rootflags=data=writeback 

** Tainted: D (128)
 * Kernel has oopsed before.

** Kernel log:
[0.751641]   alloc irq_desc for 28 on node -1
[0.751643]   alloc kstat_irqs on node -1
[0.751729] virtio-pci :00:04.0: irq 28 for MSI/MSI-X
[0.752803] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[0.753517]  vda: vda1 vda2
[0.754483] uhci_hcd: USB Universal Host Controller Interface driver
[0.755860] uhci_hcd :00:01.2: PCI INT D - Link[LNKD] - GSI 10 (level, 
high) - IRQ 10
[0.757165] uhci_hcd :00:01.2: setting latency timer to 64
[0.757179] uhci_hcd :00:01.2: UHCI Host Controller
[0.757848] uhci_hcd :00:01.2: new USB bus registered, assigned bus 
number 1
[0.759001] uhci_hcd :00:01.2: irq 10, io base 0xc020
[0.759766] usb usb1: New USB device found, idVendor=1d6b, idProduct=0001
[0.760578] usb usb1: New USB device strings: Mfr=3, Product=2, 
SerialNumber=1
[0.761610] usb usb1: Product: UHCI Host Controller
[0.762233] usb usb1: Manufacturer: Linux 2.6.32-5-amd64 uhci_hcd
[0.762898] usb usb1: SerialNumber: :00:01.2
[0.763658] usb usb1: configuration #1 chosen from 1 choice
[0.764460] hub 1-0:1.0: USB hub found
[0.765041] hub 1-0:1.0: 2 ports detected
[0.916627] ata2.01: NODEV after polling detection
[0.917011] ata2.00: ATAPI: QEMU DVD-ROM, 0.12.5, max UDMA/100
[0.918368] ata2.00: configured for MWDMA2
[0.919950] scsi 1:0:0:0: CD-ROMQEMU QEMU DVD-ROM 0.12 
PQ: 0 ANSI: 5
[0.933123] sr0: scsi3-mmc drive: 4x/4x xa/form2 tray
[0.933745] Uniform CD-ROM driver Revision: 3.20
[0.934503] sr 1:0:0:0: Attached scsi CD-ROM sr0
[0.939428] sr 1:0:0:0: Attached scsi generic sg0 type 5
[1.076048] usb 1-1: new full speed USB device using uhci_hcd and address 2
[1.256318] kjournald starting.  Commit interval 5 seconds
[1.256403] EXT3-fs: mounted filesystem with writeback data mode.
[1.454962] usb 1-1: New USB device found, idVendor=0627, idProduct=0001
[1.49] usb 1-1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[1.456141] usb 1-1: Product: QEMU USB Tablet
[1.456642] usb 1-1: Manufacturer: QEMU 0.12.5
[1.457125] usb 1-1: SerialNumber: 1
[1.457714] usb 1-1: configuration #1 chosen from 1 choice
[2.217844] udev[363]: starting version 164
[2.433325] input: Power Button as 
/devices/LNXSYSTM:00/LNXPWRBN:00/input/input2
[2.437711] ACPI: Power Button [PWRF]
[2.473528] processor LNXCPU:00: registered as cooling_device0
[2.475711] processor LNXCPU:01: registered as cooling_device1
[2.480173] processor LNXCPU:02: registered as cooling_device2
[2.481195] processor LNXCPU:03: registered as cooling_device3
[2.482051] processor LNXCPU:04: registered as cooling_device4
[2.482870] processor LNXCPU:05: registered as cooling_device5
[2.547790] piix4_smbus :00:01.3: SMBus Host Controller at 0xb100, 
revision 0
[2.789415] input: PC Speaker as /devices/platform/pcspkr/input/input3
[2.819982] parport_pc 00:05: reported by Plug and Play ACPI
[2.820917] parport0: PC-style at 0x378, irq 7 [PCSPP,TRISTATE]
[2.825668] usbcore: registered new interface driver hiddev
[2.848259] input: QEMU 0.12.5 QEMU USB Tablet as 
/devices/pci:00/:00:01.2/usb1/1-1/1-1:1.0/input/input4
[2.849733] generic-usb 0003:0627:0001.0001: input,hidraw0: USB HID v0.01 
Pointer [QEMU 0.12.5 QEMU USB Tablet] on usb-:00:01.2-1/input0
[2.850898] usbcore: registered new interface driver usbhid
[2.851578] usbhid: v2.6:USB HID core driver
[2.934005] Error: Driver 'pcspkr' is already registered, aborting...
[3.143200] Adding 524280k swap on /dev/vda2.  Priority:-1 extents:1 
across:524280k 
[3.262849] EXT3 FS on vda1, internal journal
[3.265337] input: ImExPS/2 Generic Explorer Mouse as 
/devices/platform/i8042/serio1/input/input5
[5.316689] ip_tables: (C) 2000-2006 Netfilter Core Team
[5.398364] nf_conntrack version 0.5.0 (16384 buckets, 65536 max)
[5.399658] CONFIG_NF_CT_ACCT is deprecated and will be removed soon. Please 
use
[5.400773] nf_conntrack.acct=1 kernel parameter, acct=1 nf_conntrack module 
option or
[5.437435] sysctl net.netfilter.nf_conntrack_acct=1 to enable it.
[5.474827] ip6_tables: (C) 2000-2006 Netfilter Core Team
[   14.745708] eth0: no IPv6 routers present
[ 1110.094839] hrtimer:

Bug#644212: linux-image-2.6.32-5-amd64: kernel BUG at kernel/exit.c:1035: invalid opcode: 0000

2011-10-03 Thread Ben Hutchings 
On Tue, 2011-10-04 at 03:51 +0300, Faidon Liambotis wrote:
 Package: linux-2.6
 Version: 2.6.32-35
 Severity: normal
 
 The stack trace can be seen below; if it matters, note that the machine
 a) is running under KVM, b) has relatively high CPU  I/O load c) it's
 the first time it has BUGed, although it has been running with 2.6.32
 since April and with 2.6.32-35 since early August.
[...]

Well this is pretty damn weird.  This BUG message means that the
scheduler reselected a task to run after it exited (i.e. it was a
zombie).

I can't find any related bug reports or fixes.  I'm afraid we are
unlikely to be able to progress this unless it is reproducible.

Ben.

-- 
Ben Hutchings
Never put off till tomorrow what you can avoid all together.


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