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    SubjectRe: Mysterious CFQ crash and RCU
    On Sat, 2011-05-21 at 16:54 -0700, Paul E. McKenney wrote:
    > On Sun, May 22, 2011 at 12:23:50AM +0200, Paul Bolle wrote:
    > > Is anyone able to spot one or more commits in v2.6.39-rc7..v2.6.39 that
    > > might have fixed this Oops? Or did my chance of hitting this Oops,
    > > somehow, just got a lot smaller in v.2.6.39?

    As I just discovered, Fedora Rawhide ships release candidates configured
    with a lot more debugging options set than it ships final releases. So,
    sadly, this didn't get fixed in v2.6.39. It just didn't show up because
    one or more configuration options weren't set while they used to be set
    in the preceding release candidates kernels.

    > 5f45c69589b7d ("read_lock() does not always imply rcu_read_lock()") might
    > well be a fix.

    It doesn't really matter anymore, but that one was actually already
    included in v2.6.39-rc5.

    Paul Bolle

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