Re: resume from s2ram regression (bisected to ftrace...)

From: Rafael J. Wysocki
Date: Sun Aug 10 2008 - 15:45:31 EST


On Sunday, 10 of August 2008, Marcin Slusarz wrote:
> On Sun, Aug 10, 2008 at 07:40:12PM +0200, Rafael J. Wysocki wrote:
> > On Sunday, 10 of August 2008, Marcin Slusarz wrote:
> > > Hi
> > >
> > > Few days ago I discovered that resume from suspend to ram does not work anymore
> > > on my 2.6.27-rc2 (actually 796aadeb1b2db9b5d463946766c5bbfd7717158c) gentoo box.
> > > My computer just boots on resume. Today I had enough time to bisect it and found
> > > (after 1 panic and 1 build breakage) out "the reason":
> > >
> > > $ git bisect good
> > > d05cdb25d80f06f77aa6bddb53cd1390d4d91a0b is first bad commit
> > > commit d05cdb25d80f06f77aa6bddb53cd1390d4d91a0b
> > > Author: Steven Rostedt <rostedt@xxxxxxxxxxx>
> > > Date: Mon May 12 21:20:54 2008 +0200
> > >
> > > ftrace: fix dynamic ftrace selftest
> >
> > Does it still happen if:
> > - CONFIG_FTRACE is unset
>
> no
>
> > - CONFIG_FTRACE is set, but CONFIG_FTRACE_STARTUP_TEST is unset?
>
> yes

Thanks for testing.

Well, ftrace is a new feature in 2.6.27, IIRC, so this is not a regression in
the strict sense.

Still, of couse, there is a bug in ftrace that needs to be fixed. Steven?
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