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    SubjectRE: [PATCH v7 09/10] x86, mpx: cleanup unused bound tables
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    On 2014-07-24, Hansen, Dave wrote:
    > On 07/20/2014 10:38 PM, Qiaowei Ren wrote:
    >> Since the kernel allocated those tables on-demand without userspace
    >> knowledge, it is also responsible for freeing them when the
    >> associated mappings go away.
    >>
    >> Here, the solution for this issue is to hook do_munmap() to check
    >> whether one process is MPX enabled. If yes, those bounds tables
    >> covered in the virtual address region which is being unmapped will
    >> be freed
    > also.
    >
    > This is the part of the code that I'm the most concerned about.
    >
    > Could you elaborate on how you've tested this to make sure it works OK?

    I can check a lot of debug information when one VMA and related bounds tables are allocated and freed through adding a lot of print() like log into kernel/runtime. Do you think this is enough?

    Thanks,
    Qiaowei


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