Date: Sat, 28 Jun 2014 15:01:58 +0200 From: Oliver Pinter <oliver.pntr@gmail.com> To: soc-status@freebsd.org Cc: gavin@freebsd.org Subject: [intel smap, kpatch] weekly report #5 Message-ID: <CAPjTQNEgP=Ly-Xz-Ddfit_oF_7UbCH2FmUVsxnjhGkXApspuKg@mail.gmail.com>
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This week I started the second phase of GSoC. In this design a run-time kernel and module patching framework. This means that the kernel able to dynamically change their code run-time. In second phase's first week I investigated where must I implement the functionality and which kernel APIs should I use. You can found the current status in my wiki page. On 6/21/14, Oliver Pinter <oliver.pntr@gmail.com> wrote: > Hi! > > At this week i am hunting a triple fault during the boot. This caused > by a compiler error, when CPUTYPE in /etc/make.conf was set to > core-avx2, after removing this the first phase was done. All of my > test running fine and the system are stable. Originally only amd64 > implementation required, but I added to i386 too - but the later not > yet tested. > > In next phase I design a proper way how to patch kernel and modules at > boot and run-time. > > What's done: > * SMAP for amd64 > * test SMAP for amd64 > * build framework > * VM creation > * SMAP for i386 (not tested) > * some other tool, that make my life easier > > The current status can you find on my wiki page. > > On 6/15/14, Oliver Pinter <oliver.pntr@gmail.com> wrote: >> Hi all! >> >> In the last week I was mostly done with implementation, as you can see >> on my wiki page. The most of i386 commits are not tested because a >> cross-build problem on amd64 system. >> Other resolvable problem are on amd64 system, where the machine triple >> faulted, because wrong assembler statements generated with the >> compiler. I'm deep in debugging both of two case. This issue are too >> in my wiki page under this section: >> https://wiki.freebsd.org/SummerOfCode2014/IntelSMAPandKernelPatching#notes >> >> I have at this week my last exam at Thursday. After that I'm focusing >> fully on GSoC. >> >> On 6/6/14, Oliver Pinter <oliver.pntr@gmail.com> wrote: >>> Hi all! >>> >>> Previous week I started to work on SMAP for amd64 and i386. For amd64 >>> many parts are in good state. The codes currently are only compile >>> tested, at next week I create a VM, and create run-time tests. For >>> i386 started the work on yesterday. >>> All of my status can be found on my wiki page. >>> >>> What's done, but not tested in this week: >>> * {amd64,i386} trap handler >>> * amd64 initialization >>> * {amd64,i386} identification >>> * {amd64,i386} exceptions >>> * amd64 pmap changes >>> * amd64 support.S changes >>> * amd64 ia32 compat exceptions >>> * i386 ddb extension >>> >>> At next week I plan to finish all of amd64 things, and most of i386 >>> things, and begin to test; start to design a proper way to create >>> kpatch and/or ifunc like things. >>> >>> >>> svn: http://svnweb.freebsd.org/socsvn/soc2014/op/ >>> git: https://github.com/opntr/opBSD (branches: >>> op/gsoc2014/{master,smap,kpatch} ) >>> wiki: >>> https://wiki.freebsd.org/SummerOfCode2014/IntelSMAPandKernelPatching >>> >>> >>> On 5/29/14, Oliver Pinter <oliver.pntr@gmail.com> wrote: >>>> Hi all! >>>> >>>> I'm working on Intel SMAP technology in first half of GSoC. >>>> At first week I investigated in SMAP technology and relevant FreeBSD >>>> codes, whats changed since my Bsc thesis. >>>> >>>> I implemented a vulnerable kernel module and PoC to test allowed and >>>> not allowed memory access scenario. Created my wiki page, svn repo, >>>> and git repo. >>>> >>>> svn: http://svnweb.freebsd.org/socsvn/soc2014/op/ >>>> git: https://github.com/opntr/opBSD (branches: >>>> op/gsoc2014/{master,smap,kpatch} ) >>>> wiki: >>>> https://wiki.freebsd.org/SummerOfCode2014/IntelSMAPandKernelPatching >>>> test-cases: >>>> http://svnweb.freebsd.org/socsvn/soc2014/op/tests/smap-tester/ >>>> >>>> Good days, >>>> Oliver >>>> >>> >> >
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