On 01/21/2016 04:52 AM, Jan Kara wrote: > 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?
Yup, that's not in. I'll include it and release it along with 3.18.26 on the weekend. Thanks, Sasha
