Re: [Bug #14012] latest git fried my x86_64 imac

From: Justin P. Mattock
Date: Thu Aug 27 2009 - 17:00:48 EST


Randy Dunlap wrote:
On Thu, 27 Aug 2009 21:45:01 +0200 Rafael J. Wysocki wrote:

On Thursday 27 August 2009, Justin P. Mattock wrote:
Rafael J. Wysocki wrote:
On Wednesday 26 August 2009, Justin P. Mattock wrote:

Rafael J. Wysocki wrote:

This message has been generated automatically as a part of a report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.30. Please verify if it still should be listed and let me know
(either way).


Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=14012
Subject : latest git fried my x86_64 imac
Submitter : Justin P. Mattock<justinmattock@xxxxxxxxx>
Date : 2009-08-13 07:20 (13 days old)
References : http://marc.info/?l=linux-kernel&m=125014080427090&w=4





if I revert this commit:
af6af30c0fcd77e621638e53ef8b176bca8bd3b4
I can get a normal bootup.

Hm, that's

commit af6af30c0fcd77e621638e53ef8b176bca8bd3b4
Author: Peter Zijlstra<peterz@xxxxxxxxxxxxx>
Date: Wed Aug 5 20:41:04 2009 +0200

ftrace: Fix perf-tracepoint OOPS

I wonder what happens if you compile out ftrace?


As for this bug, it seems I'm the only
hitting this. The system is a fresh LFS build
x86_64.
In regards to keeping this open
not sure, I don't have a problem with closing this
and taking the blame as something I did during my build
of the system, then if this becomes more frequent
then open a new bug.

OK, I'll close it for now.

Thanks,
Rafael
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/


o.k. I tried disabling all of ftrace in the kernel,
unfortunately the only one left
is HAVE_FTRACE_SYSCALLS
which seems to be selected by x86.
seems the system still sticks
without reverting perf-tracepoint oops.
That's kind of strange. Can you attach the .config, please?

That's what arch/x86/Kconfig does:

### Arch settings
config X86
def_bool y
...
select HAVE_FTRACE_SYSCALLS

It just means that the $arch has that capability, not that it is enabled.


---
~Randy
*** Remember to use Documentation/SubmitChecklist when testing your code ***

Alright(see how much of newbie I am),
then disabling ftrace(if its safe to say)
still doesn't resolve the issue
for me then.

best bet, in my honest opinion
is to hold off on anything, until
"if any", other reports start showing up in this manner.
if in the future there is no such reports then it's
probably safe to say I did something wrong.
Then if there is issues later in time by anybody,
then we have an idea of where/what might be the causing this.


Justin P. Mattock

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/