Re: [PATCH 07/12] perf_events: add LBR software filter support for Intel X86

From: Andi Kleen
Date: Thu Oct 06 2011 - 11:32:33 EST

> + 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?

ak@xxxxxxxxxxxxxxx -- Speaking for myself only.
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