similar to: Taint flow tracking

hello, I am trying to build LLVM with default options. I am getting the following error message after make. [100%] Building C object tools/llvm-c-test/CMakeFiles/llvm-c-test.dir/metadata.c.o [100%] Building C object tools/llvm-c-test/CMakeFiles/llvm-c-test.dir/module.c.o [100%] Building C object tools/llvm-c-test/CMakeFiles/llvm-c-test.dir/object.c.o [100%] Building C object

Hello, I have studied register allocation in theoretical aspects and exploring the same in the implementation level. I need a minimal testcase for register spilling to analyze spilling procedure in llvm. I tried with a testcase taking 20 variables but all the 20 variables are getting stored in the stack using %rbp. Maybe my live variable analysis is wrong. Please help me with a minimal testcase

Hello, I have a few general questions. 1. Whether the memory contents assigned for a function are accessible after we return from that function? If yes, how can we access it? 2. Does llvm delete the stackframe assigned for a specific function, after we return from that function? 3. If not, how can we delete the stackframe or clear the memory content after we return from the function? Where do

Hello, For the following test case, reg.c #include <stdio.h> int getinput() { static int u=10; return u++; } int main() { int a,b,c,d,e,f,g; a=getinput(); b=getinput(); c=getinput(); d=getinput(); e=getinput(); f=getinput(); g=getinput(); printf("%d %d %d %d %d %d %d\n",a,b,c,d,e,f,g); a=b=c=d=e=f=g=0; return 0; } *1.

Various options for reducing memory usage when building LLVM: * Don't use bfd-ld, at least use gold, probably use lld if you have it available * With Ninja and/or CMake there's some way to specify the maximum number of concurrent linkactions - lower this to fit in your available memory * If you're building with debug info: Use Split DWARF On Thu, Jan 2, 2020 at 5:21 AM Kókai Péter

The last time this came up, we agreed something should be done to fix the defaults, but nobody picked it up and ran with it. I think there was consensus, it just needs legwork now. On Thu, Jan 2, 2020 at 11:58 AM Aaron Smith via llvm-dev < llvm-dev at lists.llvm.org> wrote: > There was a recent thread on reducing memory: >

The patch attached is to set effective memory type for EPT according to the VT-d snoop control capability, and also includes some cleansup for EPT & VT-d both enabled. Signed-off-by: Zhai, Edwin Edwin.Zhai@intel.com<mailto:Edwin.Zhai@intel.com> Signed-off-by: Xin, Xiaohui xiaohui.xin@intel.com<mailto:xiaohui.xin@intel.com> _______________________________________________

Hi all, I have some questions about "DataFlowSanitizer" from "compiler-rt". I want to know how I can test the "DataFlowSanitizer"? Can I configure it to label only some values, i.e, the return values from specific functions? Also, how can I print these labels? Thanks, Dareen -------------- next part -------------- An HTML attachment was scrubbed... URL:

On Tue, Oct 7, 2014 at 2:51 PM, Peter Collingbourne <peter at pcc.me.uk> wrote: > Looks good, thanks! > > Can you write the test case, please? You probably have more experience > writing debug info tests than I do. > Sure - though how would I get the pre-dfsan .ll file to produce this behavior? I've tried compiling to a .ll file without dfsan, then feeling that .ll

Here's a basic patch which would solve it in sort of the same way as the other optimizations I was fixing (just special case the debug info & fix it up). I can work up a test case for this as well, or you can, if you like/this seems reasonable. On Tue, Oct 7, 2014 at 2:30 PM, Peter Collingbourne <peter at pcc.me.uk> wrote: > On Tue, Oct 07, 2014 at 12:20:55PM -0700, David

Dear Developers, I am a Master's student at the ECE department of the University of Florida, USA.​​ For my research project, supervised by Prof. Mark Tehranipoor<http://tehranipoor.ece.ufl.edu/> and Prof. Farimah Farahmandi<http://farimah.ece.ufl.edu/>, I need to use Clang LLVM DataflowSanitizer library in KLEE. However, I have faced some difficulties (explained below) while

On Tue, Oct 7, 2014 at 12:18 PM, David Blaikie <dblaikie at gmail.com> wrote: > > > On Tue, Oct 7, 2014 at 12:10 PM, David Blaikie <dblaikie at gmail.com> wrote: > >> >> >> On Tue, Oct 7, 2014 at 11:48 AM, Peter Collingbourne <peter at pcc.me.uk> >> wrote: >> >>> On Tue, Oct 07, 2014 at 10:04:30AM -0700, David Blaikie wrote:

We had an incident recently where an openssh client and server were replaced with trojanned versions (it has SKYNET ASCII-art in the binary, if anyone's seen it. Anyone seen the source code ?). The trojan ssh & sshd both logged host/user/password, and probably had a login backdoor. Someone asked me what was their exposure if they used public/private keys instead of passwords. My

Afternoon, I had an issue with trying to link a program with the DataFlowSanitizer functionality, this is from the libFuzzer project, and I was seeing: clang++ -fsanitize=address -fsanitize-coverage=edge test_fuzzer.cc Fuzzer*.o Undefined symbols for architecture x86_64: "_dfsan_create_label", referenced from: fuzzer::TraceState::DFSanCmpCallback(unsigned long, unsigned

Hi there. I’m trying to use LibFuzzer on OSX and face some issues: I checked out LibFuzzer documentation[1] and managed to proceed until the final step of the first example. Now I see linker errors related to dfsan, dfsan’s documentation[2] states explicitly “DataFlowSanitizer is a work in progress, currently under development for x86_64 Linux.”. Does it mean that LibFuzzer available only on

Hi, I'm seeming new regressions form 4.0.0 for mips big endian: DataFlowSanitizer-mips64 :: custom.cc DataFlowSanitizer-mips64 :: propagate.c SanitizerCommon-asan-mips-Linux :: sanitizer_coverage_trace_pc_guard-dso.cc SanitizerCommon-asan-mips-Linux :: sanitizer_coverage_trace_pc_guard.cc SanitizerCommon-asan-mips64-Linux :: Linux/getpwnam_r_invalid_user.cc

Hi all, Any one tried using DataFlowSanitizer on Linux x86_64? I tried on: 3.13.0-44-generic #73~precise1-Ubuntu SMP Wed Dec 17 00:39:15 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux It assumes wrong memory layout and remaps application code segment as shadow memory, thus causing SIGSEV (Segmentation fault). Is this know? and fix under way? -Thanks, Aravind -------------- next part

I have tried to put a flash movie inside of my RoR page and it shows up with nothing on IEPC. It does very well on every other type of browser but does not work with IEPC. I made a folder - "flash" in my public directory and have had the one instance of it point there. Thus my flash directory is www.rails-app.com/flash/flash.swf Is there anything that anyone knows to help out?

http://bugzilla.mindrot.org/show_bug.cgi?id=1245 Damien Miller <djm at mindrot.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |djm at mindrot.org --- Comment #2 from Damien Miller <djm at mindrot.org> 2007-06-22 15:34:00 --- Do the

Hi. I'm using llvm DataFlowSanitizer. I add such code in library libtiff. dfsan_label lt_label = dfsan_create_label("buf_offset", 0); dfsan_set_label(lt_label, (unsigned char *)buf, size); But when i compile libtiff with "-fsanitize=dataflow" option, then there is an error as follows: ../libtiff/libtiff.so.5.2.5: undefined reference to `dfs$jbg_enc_init'