[PATCH] pte_fsl_booke: fix instruction TLB error permission check

Benjamin Herrenschmidt benh at kernel.crashing.org
Fri May 14 07:46:12 EST 2010


On Thu, 2010-05-13 at 14:14 -0500, Kumar Gala wrote:
> On May 7, 2010, at 3:38 AM, Li Yang wrote:
> 
> > Check the user/supervisor execution permission base on the code address.
> > This fixes the following oops on module loading or removing.
> > 
> > Unable to handle kernel paging request for instruction fetch
> > Faulting instruction address: 0xf938d040
> > Oops: Kernel access of bad area, sig: 11 [#1]
> > 
> > Signed-off-by: Li Yang <leoli at freescale.com>
> > Signed-off-by: Jin Qing <b24347 at freescale.com>
> > ---
> > arch/powerpc/kernel/head_fsl_booke.S |   13 ++++++++++---
> > 1 files changed, 10 insertions(+), 3 deletions(-)
> 
> applied to merge.
> 
> I've updated the commit message to be a bit more clear on why we need to do this.

Not looking at the code right now ... but do we have the same issue on
64e ?

Cheers,
Ben.



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