On Wed, 7 Jun 2017, Andre Wild wrote: > I'm currently seeing the following message running kernel version 4.11.0. > It looks like it was introduced with the patch > 4037d452202e34214e8a939fa5621b2b3bbb45b7. A 2007 patch? At that point we did not have __this_cpu_read() nor refresh_cpu_vmstats.... Is this on s390 or some such architecture? > Can you please take a look at this problem? Could you give me a bit more context? > [Tue Jun 6 15:27:03 2017] BUG: using __this_cpu_read() in preemptible > [00000000] code: mm_percpu_wq/7 > [Tue Jun 6 15:27:03 2017] caller is refresh_cpu_vm_stats+0x198/0x3d8 > [Tue Jun 6 15:27:03 2017] CPU: 0 PID: 7 Comm: mm_percpu_wq Tainted: G > W 4.11.0-20170529.0.ae409ab.224a322.fc25.s390xdefault #1 > [Tue Jun 6 15:27:03 2017] Workqueue: mm_percpu_wq vmstat_update It is run in preemptible mode but this from a kworker context so the processor cannot change (see vmstat_refresh()). Even on s390 or so this should be fine. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>
