Messages in this thread | | | Date | Tue, 28 May 2013 14:22:11 -0400 (EDT) | From | Vince Weaver <> | Subject | Re: OOPS in perf_mmap_close() |
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On Tue, 28 May 2013, Vince Weaver wrote:
> It looks like this is already in tip, but I can confirm that this > patch seems to fix things on my machine and holds up against longer > fuzzing runs.
OK, I take it back. Even with the new patch applied, my fuzzer can still make the kernel leak user->locked_vm
I assume that the locked_vm value should go back to 0 once a process that has a bunch of mmap'd perf_events opened exits?
I admit this is sort of an obscure corner case, but it does mean that a user can leak user->locked_vm to the point that "perf record" no longer works.
Vince
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