Messages in this thread | | | Date | Thu, 09 Mar 2017 21:43:47 +0100 | From | Paul Menzel <> | Subject | Re: Kernel panic on Lenovo X60 with tracing enabled |
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On 2017-03-09 17:29, Steven Rostedt wrote: > On Thu, 9 Mar 2017 10:16:02 -0600 > Josh Poimboeuf wrote: > >> On Thu, Mar 09, 2017 at 09:36:30AM -0500, Steven Rostedt wrote: >> > On Thu, 9 Mar 2017 13:12:28 +0100 >> > Paul Menzel wrote:
>> > > Hopefully, I am contacting the right people for my issue. >> > > >> > > Suspending a system with Linux 4.9.13 with tracing enabled, it fails >> > > with the screen still enabled, and the LED blinking. Attaching a serial >> > > console to the dock, shows the messages below. >> > >> > I'm betting this is a compiler bug, as that bug that printed is the >> > internal ftrace check for it. (note the bug is only in x86-32 not >> > x86-64) >> > >> > Funny, we are just talking about this bug in another thread, but with a >> > different symptom. >> > >> > Josh, did you say this goes away if you disable optimize for size or >> > does it need to be enabled? >> >> Yeah, assuming it's the same problem, then this is caused by >> CONFIG_CC_OPTIMIZE_FOR_SIZE. It would be fixed by changing it to >> CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE. >> > > Paul, do you have CONFIG_CC_OPTIMIZE_FOR_SIZE enabled? Can you set it > to PERFORMANCE and see if the problem goes away?
As far as I can see, the Debian Linux kernel is built with `CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE=y`.
So it might be a different problem?
Kind regards,
Paul
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