On Wed, Aug 10, 2016 at 11:59 PM, Jiri Kosina <ji...@kernel.org> wrote: > On Wed, 10 Aug 2016, Rafael J. Wysocki wrote: > >> So I used your .config to generate one for my test machine and with >> that I can reproduce. > > Was that the config I've sent, or did Boris provide one as well? Which one > are you able to reproduce with please?
It's the Boris' one. Moreover, I have found the options that make the difference: unsetting CONFIG_PROVE_LOCKING and CONFIG_DEBUG_LOCK_ALLOC (which also will unset CONFIG_LOCKDEP AFAICS) in it makes hibernation work again with CONFIG_RANDOMIZE_MEMORY set and with the $subject patch applied. Unbelievable, but that's what I'm seeing. Now, that leads to a few questions: - How does lockdep change the picture so it matters for hibernation? - Why is hibernation the only piece that's affected? - Why is RANDOMIZE_MEMORY necessary to make this breakage show up? Thomas, any ideas? Thanks, Rafael