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    SubjectRe: workqueue: WARN at at kernel/workqueue.c:2176
    On 05/16/2014 12:29 PM, Peter Zijlstra wrote:
    > On Sat, May 17, 2014 at 12:18:06AM +0800, Lai Jiangshan wrote:
    >> so the scheduler/set_cpus_allowed_ptr()/cpu_active_mask should be the first
    >> place to fix.
    >
    > I'm not arguing about that, not to mention that this is userspace
    > exposed and nobody protects that.
    >
    > But I was expecting kernel stuff that calls it on hotplug to be
    > serialized thusly, but apparently not so.
    >

    Was a final patch posted for this issue? The discussion made it sound
    like there were still a few things to figure out before we could resolve
    this bug. I can recreate this as needed and I'm happy to test any patches.

    --
    -- Jason J. Herne (jjherne@linux.vnet.ibm.com)



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