[PATCH 1/3] powerpc/mm: Don't alias user region to other regions below PAGE_OFFSET · Paul Mackerras <hidden> · 2016-09-02
[PATCH 3/3] powerpc/mm: Speed up computation of base and actual page size for a HPTE · Paul Mackerras <hidden> · 2016-09-02
Re: [PATCH 3/3] powerpc/mm: Speed up computation of base and actual page size for a HPTE · Aneesh Kumar K.V <hidden> · 2016-09-04
Re: [PATCH 3/3] powerpc/mm: Speed up computation of base and actual page size for a HPTE · Aneesh Kumar K.V <hidden> · 2016-09-05
Re: [PATCH 3/3] powerpc/mm: Speed up computation of base and actual page size for a HPTE · Paul Mackerras <hidden> · 2016-09-07
[PATCH v2 3/3] powerpc/mm: Speed up computation of base and actual page size for a HPTE · Paul Mackerras <hidden> · 2016-09-07
Re: [PATCH v2 3/3] powerpc/mm: Speed up computation of base and actual page size for a HPTE · Paul Mackerras <hidden> · 2016-09-08
Re: [PATCH v2 3/3] powerpc/mm: Speed up computation of base and actual page size for a HPTE · Paolo Bonzini <pbonzini@redhat.com> · 2016-09-08
Re: [PATCH v2 3/3] powerpc/mm: Speed up computation of base and actual page size for a HPTE · Paul Mackerras <hidden> · 2016-09-12
Re: [PATCH v2 3/3] powerpc/mm: Speed up computation of base and actual page size for a HPTE · Michael Ellerman <hidden> · 2016-09-12
Re: [PATCH v2 3/3] powerpc/mm: Speed up computation of base and actual page size for a HPTE · Paolo Bonzini <pbonzini@redhat.com> · 2016-09-12
[PATCH 2/3] powerpc/mm: Preserve CFAR value on SLB miss caused by access to bogus address · Paul Mackerras <hidden> · 2016-09-02
Re: [PATCH 2/3] powerpc/mm: Preserve CFAR value on SLB miss caused by access to bogus address · Aneesh Kumar K.V <hidden> · 2016-09-04
Re: [PATCH 2/3] powerpc/mm: Preserve CFAR value on SLB miss caused by access to bogus address · Paul Mackerras <hidden> · 2016-09-07
Re: [2/3] powerpc/mm: Preserve CFAR value on SLB miss caused by access to bogus address · Michael Ellerman <hidden> · 2016-09-13
Re: [PATCH 1/3] powerpc/mm: Don't alias user region to other regions below PAGE_OFFSET · Aneesh Kumar K.V <hidden> · 2016-09-02
Re: [PATCH 1/3] powerpc/mm: Don't alias user region to other regions below PAGE_OFFSET · Paul Mackerras <hidden> · 2016-09-03
Re: [PATCH 1/3] powerpc/mm: Don't alias user region to other regions below PAGE_OFFSET · Aneesh Kumar K.V <hidden> · 2016-09-04
Re: [1/3] powerpc/mm: Don't alias user region to other regions below PAGE_OFFSET · Michael Ellerman <hidden> · 2016-09-08

Re: [PATCH 1/3] powerpc/mm: Don't alias user region to other regions below PAGE_OFFSET

From: Aneesh Kumar K.V <hidden>
Date: 2016-09-04 11:31:25

Paul Mackerras [off-list ref] writes:

On Fri, Sep 02, 2016 at 05:52:16PM +0530, Aneesh Kumar K.V wrote:

quoted

Hi Paul,

Really nice catch. Was this found by code analysis or do we have any
reported issue around this ?

I found it by code analysis.

I haven't been able to find any really bad consequence, beyond leaking
some information about kernel memory.  Can you find any worse
consequence?

No, considering linux page table entry is not going to have a mapping
for this address.

-aneesh

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