search for: interceptor

...gt;> On 2 Sep 2016, at 11:18, Dmitry Vyukov via llvm-dev <llvm-dev at lists.llvm.org> wrote: >>> >>> On Thu, Sep 1, 2016 at 2:30 PM, Kuba Brecka <kuba.brecka at gmail.com> wrote: >>>> Hi, >>>> >>>> I'm trying to write a TSan interceptor for the C++11 call_once function. There are currently false positive reports, because the inner __call_once function is located in the (non-instrumented) libcxx library, and on macOS we can't expect the users to build their own instrumented libcxx. >>>> >>>> TSan alrea...

> On 2 Sep 2016, at 11:18, Dmitry Vyukov via llvm-dev <llvm-dev at lists.llvm.org> wrote: > > On Thu, Sep 1, 2016 at 2:30 PM, Kuba Brecka <kuba.brecka at gmail.com> wrote: >> Hi, >> >> I'm trying to write a TSan interceptor for the C++11 call_once function. There are currently false positive reports, because the inner __call_once function is located in the (non-instrumented) libcxx library, and on macOS we can't expect the users to build their own instrumented libcxx. >> >> TSan already supports pthr...

Hi, I'm trying to write a TSan interceptor for the C++11 call_once function. There are currently false positive reports, because the inner __call_once function is located in the (non-instrumented) libcxx library, and on macOS we can't expect the users to build their own instrumented libcxx. TSan already supports pthread_once and dispa...

...eing dialed into [macro-process-routing] over an iax2 channel from another (same build) Asterisk server: [macro-process-routing] ; This is the entrypoint of the debug call but is also refered to by Macro(process-routing) elsewhere in the dialplan ; XXX-NNN-6800 exten => _6800,1,Macro(6800-interceptor) ; This is matched when 8 is dialed during macro-6800-interceptor,s,4 exten => _8,1,Playback(welcome) exten => _8,2,Hangup [macro-6800-interceptor] exten => s,1,DigitTimeout,2 exten => s,2,ResponseTimeout,7 exten => s,3,Answer exten => s,4,Background(autoattendant-ivr/...

Hi, I am developing a rails 3 application. I want to use a interceptor before delivering emails. If a conditions meets, I want to stop the email. How do I do that? Thanks. Sam -- Posted via http://www.ruby-forum.com/. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send em...

Hi, I triggered a build failure on a Windows-sanitizer by making the sanity checking in `ASAN_INTERCEPT_FUNC` a bit stricter. My best guess is that the type of the defined interceptor is not compatible (in C++ typing terms) with the “real” function. This seems to be the case for the following 2 functions: CreateThread “no conversion”: From: 'DWORD (__cdecl *)(void * , __sanitizer::uptr, DWORD (__cdecl *)(void *), void *, DWORD, void * )' To : 'HANDL...

I am guessing that sanitizers are not supported with static linking. The AddressSanitizer document says so explicitly but the others do not. Yet the interceptors use dlsym to set up certain system calls, so by definition they can't support static linking. Given that sanitizers won't work with static linking, why are static libraries created for them? Should there be an error check in the interceptor code for dlsym returning nullptr? I just spent...

...g) will not be synchronized to thread B. Anyway, I just realized that we can wrap "func" into our own callback, which will perform the (extra) __tsan_release... Do you think that would work? E.g.: void call_once_callback_wrapper(...) { orig_func(orig_arg); __tsan_release(flag); } INTERCEPTOR(call_once, o, func, arg) { REAL(call_once)(flag, ..., call_once_callback_wrapper); } Kuba > On 2 Sep 2016, at 13:42, Dmitry Vyukov <dvyukov at google.com> wrote: > > INTERCEPTOR(call_once, o) { > __tsan_release_merge(o); > REAL(call_once)(o); > __tsan_acquire(o);...

Hi everyone, I ran into a false positive with memory sanitizer due to it not intercepting dlinfo. I tried to get started on writing such an interceptor, but dlinfo seems like an extraordinarily difficult function to intercept. The three considerations that I would like somebody to look at are: 1) How do we get the enum values to decide what kind of pointer dlinfo is getting. Ideally we'd include dlfcn.h, but the interceptor file doesn't g...

...using a debug version > of system library): > I think I actually encountered all these cases. > > That said, the benefit of checking the sorting routines is clear: I'm not > surprised you were able to catch numerous bugs with your tool. > > UBSan currently doesn't have interceptors, and all of its checks [1] are > designed to work without runtime library support, so that it can be used as > a mitigation > tool (with -fsanitize-trap=undefined). It's challenging to add UBSan > interceptors at this point: this would limit the tool portability (at least > port...

...ABLE_ASSERTIONS=true \ -DLLVM_ENABLE_LIBCXX=yes \ -DLLVM_ENABLE_LIBCXXABI=yes The check-all target is failing to compile the interception tests: /home/sdowney/bld/llvm-master/llvm/projects/compiler-rt/lib/interception/tests/interception_linux_test.cc:26:18: error: redefinition of 'isdigit' INTERCEPTOR(int, isdigit, int d) { ^ /usr/include/ctype.h:185:1: note: previous definition is here __isctype_f (digit) ^ /usr/include/ctype.h:93:3: note: expanded from macro '__isctype_f' is##type (int __c) __THROW \ ^ <scratch space>:835:1: note: expanded from here isdigi...

...not see a way of adding a scope using a filter. Anyone using with_scope and filters that can shed any light? Cheers, Jon [1] http://habtm.com/articles/2006/02/22/nested-with_scope [2] "around" was originally defined in CLOS (Common Lisp) 30 years ago. It''s when some form of interceptor is called and is given full control of calling the next interceptor in the chain. "around" is simple yet incredibly powerful and can not only be used to implement "before" and "after" but all sorts of crazy interception types. I''m slightly disappointed Rai...

...>>> I think I actually encountered all these cases. >>> >>> That said, the benefit of checking the sorting routines is clear: I'm not >>> surprised you were able to catch numerous bugs with your tool. >>> >>> UBSan currently doesn't have interceptors, and all of its checks [1] are >>> designed to work without runtime library support, so that it can be used as >>> a mitigation >>> tool (with -fsanitize-trap=undefined). It's challenging to add UBSan >>> interceptors at this point: this would limit the tool...

...> wrote: > On Thu, Apr 9, 2015 at 9:24 PM, Keno Fischer > <kfischer at college.harvard.edu> wrote: > > Hi everyone, > > > > I ran into a false positive with memory sanitizer due to it not > intercepting > > dlinfo. I tried to get started on writing such an interceptor, but dlinfo > > seems like an extraordinarily difficult function to intercept. The three > > considerations that I would like somebody to look at are: > > > > 1) How do we get the enum values to decide what kind of pointer dlinfo is > > getting. Ideally we'd includ...

...>>>>> >>>>> That said, the benefit of checking the sorting routines is clear: I'm >>>>> not >>>>> surprised you were able to catch numerous bugs with your tool. >>>>> >>>>> UBSan currently doesn't have interceptors, and all of its checks [1] are >>>>> designed to work without runtime library support, so that it can be >>>>> used as >>>>> a mitigation >>>>> tool (with -fsanitize-trap=undefined). It's challenging to add UBSan >>>>>...

...ation in GCC, and have just started discussing my current work-in-progress on the gcc-patches mailing list. (https://gcc.gnu.org/ml/gcc-patches/2019-09/msg00387.html -- the email that Kostya saw and added people to). I've gotten about as basic a user-space implementation as possible (using the interceptor ABI) up and running, and would appreciate it if I could get some clarification on some other parts of hwasan and it's use so I can look into those. As you may guess by my current task I'm most interested in features that require some compiler instrumentation. Most of the questions I have...

...5696]: at org.apache.cxf.jaxrs.provider.BinaryDataProvider.writeTo(BinaryDataProvider.java:177) Nov 15 15:59:41 test.loc tika[35696]: at org.apache.cxf.jaxrs.utils.JAXRSUtils.writeMessageBody(JAXRSUtils.java:1472) Nov 15 15:59:41 test.loc tika[35696]: at org.apache.cxf.jaxrs.interceptor.JAXRSOutInterceptor.serializeMessage(JAXRSOutInterceptor.java:249) Nov 15 15:59:41 test.loc tika[35696]: at org.apache.cxf.jaxrs.interceptor.JAXRSOutInterceptor.processResponse(JAXRSOutInterceptor.java:122) Nov 15 15:59:41 test.loc tika[35696]: at org.apache.cxf.jaxrs.interceptor.JA...

...specifier to lots of libc functions as an optimization. It only does this if the compiler is modern and GCC-like, and we are compiling in C++ mode. This, however, causes GCC to complain about signature mismatches between the glibc functions declared in malloc.h and those defined as an alias in the interceptors library: ..../asan_malloc_linux.cc:57:1: error: declaration of 'void free(void*)' has a different exception specifier /usr/include/malloc.h:66:13: error: from previous declaration 'void free(void*) throw ()' I've attached a complete hack of a patch to address this... but sur...

...invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:141) at org.jboss.mx.server.Invocation.dispatch(Invocation.java:80) at org.jboss.mx.interceptor.AbstractInterceptor.invoke(AbstractInterceptor.java:118) at org.jboss.mx.server.Invocation.invoke(Invocation.java:74)...

...d intercept is the period in which that person was counted. I'm trying to construct the denominator for a likelihood function using the following function. For the first row in "results", for example, I want the denominator to be the sum of all possible arrive/depart combinations an interceptor in period 1 could observe: exp(P_1_1) + exp(P_1_2) + exp(P_1_3) (i.e. P_arrive_depart). get_denominator = function(intercept, periods_per_day) { denominator = array("(", nrow(results)) for (arrival in 1:periods_per_day) { for (departure in arrival:periods_per_day) { while (arr...