Messages in this thread | | | From | Vineeth Vijayan <> | Date | Fri, 14 Nov 2014 14:18:06 +0530 | Subject | Re: powerpc: Fix Text randomization |
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On Fri, Nov 14, 2014 at 11:50 AM, Michael Ellerman <mpe@ellerman.id.au> wrote: > On Fri, 2014-11-14 at 11:03 +0530, Vineeth Vijayan wrote: >> ping ! >> >> any update on this ? As i understand, only powerpc and s390 uses the >> randomize_et_dyn call; for all other architecture this is an obsolete >> function call. > > I asked: > >> >> I'm not clear on what has changed to break this? >
Disabling PIE randomization was added in the commit a3defbe5c337dbc6da911f8cc49ae3cc3b49b453 (binfmt_elf: fix PIE execution with randomization disabled). The randomization is decided as per the randomize_va_space sysctl flag.
As i understand, the randomization of the base address is implemented at elf_map and not from the arch/<>/include/asm/elf.h
Now, for powerpc, there's no support to disable the PIE randomization, even after we disable the same form randomize_va_space sysctl.This patch gives the support to disable PIE randomization in case it is disabled from this sysctl.
> And you didn't tell me. > >> this call for another patch where randomize_et_dyn is removed. > > Patches welcome :) >
i will follow up with the patch.
> cheers > >
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