Public bug reported:
Binary package hint: linux-source-2.6.20
I build a custom kernel using the linux-source, mainly to get LIRC
module support built in for my MythTV box. On the latest update of the
linux-source-2.6.20 package (2.6.20-15.25), the kernel that I have built
is causing a machine check on boot during disk discovery. The error
looks like a bus timeout and run through mcelog is as follows
[EMAIL PROTECTED]:/home/mythtv# mcelog --k8 --ascii < mycrash1
HARDWARE ERROR. This is *NOT* a software problem!
Please contact your hardware vendor
CPU 0 4 northbridge TSC 1195c72f0f
Northbridge Watchdog error
bit57 = processor context corrupt
bit61 = error uncorrected
bus error 'generic participation, request timed out
generic error mem transaction
generic access, level generic'
STATUS b200000000070f0f MCGSTATUS 4
I have not changed any hardware on this system, and have successfully
been building and running 2.6.20 kernels with Fiesty for this machine
for several weeks. I backed up to the last working (for me) linux-
source package and rebuilt the kernel using the _exact_ same modules
(NVIDIA and LIRC kernel source) and .config file. This was linux-
source-2.6.20 (2.6.20-14.22). The machine boots fine with this kernel.
I reitterate, the only difference between the non booting kernel and the
booting one is that I built them using the two different versions of the
linux-source package. Everything else was held the same. Note that in
both cases, the .config file is an exact clone of
/boot/config-2.6.20-15-generic, with no modifications.
There is not much status from the crashing condition, since it occurs so
early in boot. I'd give a serial trace, but I don't have a null modem
cable handy, and this motherboard requires I add a PCI slot header to
access the serial port. Instead I will attach a jpeg of the crashed
screen.
I will attach the normal kernel debug info from a boot of the working
kernel (2.6.20-14.22), which should be the same for the broken one
(2.6.20-15.25).
** Affects: linux-source-2.6.20 (Ubuntu)
Importance: Undecided
Status: Unconfirmed
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Machine Check on AMD64 with 2.6.20-15.25 (built from source) during (S)ATA disk
discovery - bus timeout
https://bugs.launchpad.net/bugs/106543
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