On Sat, Mar 25, 2017 at 10:46:15PM +0100, Borislav Petkov wrote:
> On Sat, Mar 25, 2017 at 07:58:55PM +0100, Borislav Petkov wrote:
> > Hey Rafael,
> >
> > have you seen this already (partial splat photo attached)? Happens
> > during resume from s2d. Judging by the timestamps, this looks like the
> > resume kernel before we switch to the original, boot one but I could be
> > mistaken.
> >
> > This is -rc3+tip/master.
> >
> > I can't catch a full splat because this is a laptop and it doesn't have
> > serial. netconsole is helping me for shit so we'd need some guess work.
> >
> > So I'm open to suggestions.
> >
> > Please don't say "bisect" yet ;-)))
>
> No need, I found it. Reverting
>
> ea3b5e60ce80 ("x86/mm/ident_map: Add 5-level paging support")
>
> makes the machine suspend and resume just fine again. Lemme add people to CC.
So I see rIP pointing to ident_pmd_init() and the stack trace has
load_image_and_restore() so if I try to connect the dots, I get:
load_image_and_restore
|-> hibernation_restore
|-> resume_target_kernel
|-> swsusp_arch_resume
|-> set_up_temporary_mappings
|-> kernel_ident_mapping_init
|-> ... ident_pmd_init
I'll let you folks make sense of what's going on.
Thanks.
--
Regards/Gruss,
Boris.
Good mailing practices for 400: avoid top-posting and trim the reply.
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