On Wed 20-01-16 13:39:01, Shaohua Li wrote: > On Wed, Jan 20, 2016 at 10:19:26PM +0100, Jan Kara wrote: > > Hello, > > > > a friend of mine started seeing crashes with 3.18.25 kernel - once > > appropriate load is put on the machine it crashes within minutes. He > > tracked down that reverting commit 874bbfe600a6 (this is the commit ID from > > Linus' tree, in stable tree the commit ID is 1e7af294dd03) "workqueue: make > > sure delayed work run in local cpu" makes the kernel stable again. I'm > > attaching screenshot of the crash - sadly the initial part is missing but > > it seems that we crashed when processing timers on otherwise idle CPU. This > > is a production machine so experimentation is not easy but if we really > > need more information it may be possible to reproduce the issue again and > > gather it. > > > > Anyone has idea what is going on? I was looking into the code for a while > > but so far I have no good explanation. It would be good to understand the > > cause instead of just blindly reverting the commit from stable tree... > > Tejun fixed a bug in timer: 22b886dd10180939. is it included in 3.18.25? That doesn't seem to be included in 3.18-stable although it was CCed to stable. Sasha? Honza -- Jan Kara <jack@xxxxxxxx> SUSE Labs, CR -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html