Messages in this thread | | | From | Linus Torvalds <> | Date | Fri, 27 May 2011 08:46:42 -0700 | Subject | Re: [tip:perf/urgent] perf symbols: Handle /proc/sys/kernel/kptr_restrict |
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On Fri, May 27, 2011 at 1:35 AM, Ingo Molnar <mingo@elte.hu> wrote: > > I think the biggest problem is that it is yelling at us even when i'm > root - and root can access all the pointer values just fine:
Instead of looking at the kptr_restrict file, please just look at the addresses in the kallsyms file, and if they are all zero, you know that it's not a usable kallsyms file (and you can pretty much assume that it's due to kptr_restrict).
So I think the whole symbol__read_kptr_restrict() thing is just pointless. Don't do it.
Linus
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