On 09/20/2012 08:58 PM, Borislav Petkov wrote: > On Thu, Sep 20, 2012 at 02:38:47PM +0800, Michael Wang wrote: >> Could you please try below patch and see whether the new WARNING >> appear or not? >> >> And cc Tejun Heo <t...@kernel.org> since wq_worker_sleeping() doesn't >> work as it's introduced... > > Ok, now that you mentioned workqueues, I remember the powernow-k8 > workaround from Tejun a couple of days ago and looking at Linus' tree > from today, he actually merged a fix for exactly that: > > commit c5c473e29c641380aef4a9d1f9c39de49219980f > Merge: 925a6f0bf8bd 6889125b8b4e > Author: Linus Torvalds <torva...@linux-foundation.org> > Date: Wed Sep 19 11:00:07 2012 -0700 > > Merge branch 'for-3.6-fixes' of > git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq > > Pull workqueue / powernow-k8 fix from Tejun Heo: > "This is the fix for the bug where cpufreq/powernow-k8 was tripping > BUG_ON() in try_to_wake_up_local() by migrating workqueue worker to a > different CPU. > > and this is exactly the same BUG_ON I'm hitting. and powernowk8_target > is in the stack trace so it has to be the same issue. > > I'll update my tree to latest Linus and retest.
Happen to see the problem solved. Regards, Michael Wang > > Thanks for pointing this out. > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
