> > Hi Ingo, > > Matthew Leach <matthew@xxxxxxxxxxxxx> writes: > > [...] > > > I've bisected the kernel and found that commit [2] seems to introduce > > the warning message. I have checked on a v4.2-rc5 kernel and the > > warning message is still there. > > [...] > > > [2]: 8cf1a3de97804b047973dd44cfacdc1930da8403 > > Apologies, I got it wrong. The commit that is causing the issue is [1]. > If I revert it, the warning goes away. I'm also testing to see if this is the > cause of the random freezing that occurs (which I can confirm is also > happening with v4.2-rc5). > > [1]: 15c1247953e8a45232ed5a5540f291d2d0a77665 > The issue may be caused by uncore box initialization. For preventing the potential issues of uncore box initialization, I once moved the uncore_box_init() out of driver initialization in commit c05199e5a57a579fea1e8fa65e2b511ceb524ffc. However, it cause some desktop crash, because the box initialization codes were moved in IPI context. For fixing the crash issue, we had two choice at that time. - Simply revert the codes. That's where is 15c1247953e8a45232ed5a5540f291d2d0a77665 from. - Move uncore_box_init out of IPI context to uncore event init. I provided a patch for it. https://lkml.org/lkml/2015/4/28/21 Stephane Eranian also verified it on his platform At that time, we chose first option. But it looks there is some issue now. I guess we may try the second option this time. Matthew, Could you please revert 15c1247953e8a45232ed5a5540f291d2d0a77665 and apply the patch https://lkml.org/lkml/2015/4/26/294? See if it works? Thanks, Kan -- To unsubscribe from this list: send the line "unsubscribe linux-ia64" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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