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    SubjectRe: [PATCH -next-20080709] fixup stop_machine use cpu mask vs ftrace

    * Milton Miller <> wrote:

    > Hi Rusty, Ingo.
    > Rusty's patch [PATCH 3/3] stop_machine: use cpu mask rather than magic
    > numbers didn't find kernel/trace/ftrace.c in -next, causing an
    > immediate almost NULL pointer dereference in ftrace_dynamic_init.

    Rusty - what's going on here? Please do not change APIs like that, which
    cause code to crash. Either do a compatible API change, or change it
    over in a way that causes clear build failures, not crashes.


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