http://bugzilla.kernel.org/show_bug.cgi?id=8346
Summary: Crashes + hangs during modprobe processor
Kernel Version: v2.6.21-rc7
Status: NEW
Severity: high
Owner: [EMAIL PROTECTED]
Submitter: [EMAIL PROTECTED]
Most recent kernel where this bug did *NOT* occur:v2.6.20-rc7
Distribution: Suse user land
Hardware Environment: P4
Software Environment:
Problem Description:
In roughly 2 out of 4 boots, the machine will crash or freeze during boot
while loading processor.ko from initrd. It frequently just hangs, no kbd,
no sysrq or anything. Sometimes it produces oopses, but it doesn't always
oops in the same place. Sometimes I get a spontaneous reboot; at least once
I had something trash the frame buffer with a stipple pattern.
I was unable to reproduce the bug without processor.ko.
acpi_serialize doesn't make a difference.
Common characteristics of all backtraces as far as I was able to gather them
acpi_processor_init
-> acpi_processor_power_init
-> (some ACPI eval related stuff)
-> do_page_fault
-> fixup_exception
-> search_exception_table
-> _spin_lock_irqsave
Sometimes, the EIP is bad (eg 0x246)
In one oops I captured, segment registers were hosed, with
ds:0920 es:a574 fs:3834 gs:0033 ss:0068
So, this looks like memory corruption. I'm currently working on a bisect.
Steps to reproduce:
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