Date: Sat, 19 Jul 2014 00:50:40 +0200 From: Oliver Pinter <oliver.pntr@gmail.com> To: soc-status@freebsd.org Cc: gavin@freebsd.org Subject: [intel smap, kpatch] weekly report #8 Message-ID: <CAPjTQNGzUJ3xcpTu6yVu4PfjPuDe15zxfyUN74yT3WEamscZDQ@mail.gmail.com>
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Hi! This week I mostly implemented the kernel patching framework. It's required to optimize a little, but mostly done. The current status can you find both in svn or git repo. The current code boot tested with kernel image patching, it's works. Next should I test kld preload patching and kldload patching, and then adopting SMAP related instructions and xsave related codes. Detailed info are in wiki. On 7/11/14, Oliver Pinter <oliver.pntr@gmail.com> wrote: > Hi All! > > At previous week I started to design a kernel patching framework and I > have a little holiday. > > At this week I mostly finished the design, and started to implement > the selfpatching framework. > > Next week I plan to finish the implementation of the framework, and > after that migrate the SMAP stuff to use them. > > The current status can you found on my wiki site. > > On 6/28/14, Oliver Pinter <oliver.pntr@gmail.com> wrote: >> 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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