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    SubjectRe: [PATCH 07/12] perf_events: add LBR software filter support for Intel X86
    > +	kernel_insn_init(&insn, kaddr);
    > + insn_get_opcode(&insn);

    This makes me uncomfortable. AFAIK that's the first use of the opcode
    decoder being used directly for user space. It has a quite large attack
    surface. Who says it cannot be exploited?

    -Andi
    --
    ak@linux.intel.com -- Speaking for myself only.


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