On Mon, Jul 16, 2012 at 7:16 AM, Sedat Dilek <sedat.dilek@xxxxxxxxx> wrote: > [ QUOTE ] > > Hi Linus, > > Please revert: > > commit 5baefd6d84163443215f4a99f6a20f054ef11236 > Author: John Stultz <johnstul@xxxxxxxxxx> > Date: Tue Jul 10 18:43:25 2012 -0400 > > hrtimer: Update hrtimer base offsets each hrtimer_interrupt > > This breaks resume on the iBook G4 and Toshiba Portege R500 (at least), by > adding an excessive delay to it (the Toshiba box sometimes hangs hard during > resume from system suspend). According to Andreas > (https://lkml.org/lkml/2012/7/15/66): > > "Apparently during or before noirq resume the system is hanging by the same > amount of time as the system was sleeping." > > which seems to agree with my observations. > > Given that the two known-affected boxes are so different, it is quite probable > that the total number of affected systems is actually quite high. > > Thanks! > > > To everyone involved: the fact that this change, which was likely to introduce > regressions from the look of it alone, has been pushed to Linus (an to -stable > at the same time!) so late in the cycle, is seriuosly disappointing. > > Thanks, > Rafael > > [ /QUOTE ] > > Hi, > > when I booted 1st into Linux-3.5-rc7 (a few hours after release) I had > a call-trace in get_next_timer_interrupt() (NULL pointer dereference) > on early-boot. > The machine got frozen. > > I can't say if this is related to the same issue here, but I can > confirm after suspend + resume the machine (sandy-bridge ultrabook) I > am working on is in an unusable state. > I had to cold reboot/restart. > > Regards, > - Sedat - > > P.S.: Unfortunately, I could not reproduce the NULL-deref again. > Thomas gave me some instruction to enable some debugobjects > kernel-options (see attached backlog from IRC). Hi, John asked me on IRC to send my kernel-config and to clarify about my experiences with the NULL-deref I saw in get_next_timer_interrupt(): I only saw it once - even after several bootups/bootins - as said at the very beginning - the machine was unusable - hard reset. Unfortunately, I had no digicam around to take a screenshot. I tested with the timekeeping-fix [1] from Thomas: Resume after suspend is fine with it! Thanks for the quick patch! If it's not to late, please add a... Tested-by: Sedat Dilek <sedat.dilek@xxxxxxxxx> Kind Regards, - Sedat - [1] http://marc.info/?l=linux-kernel&m=134243826028325&w=2
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