Re: [Rd] [R] debug vs regular mode

From: Zhang, Peng <pczhang_at_med.umich.edu>
Date: Fri, 10 Aug 2012 23:08:44 +0000

Hi Simon,

That could be the explanation. Is it possible to know stack limit for different scenarios? For example, if one simply wrap

terms(as.formula("h~ X1*X2*X3*X4*X5*X6*X7*X8*X9*X10*X11*X12*X13*X14*X15*X16")) in test = function() { terms(as.formula("h~ X1*X2*X3*X4*X5*X6*X7*X8*X9*X10*X11*X12*X13*X14*X15*X16"))   }

It won't cause the problem in the debug mode. Only in the bug report I filed https://bugs.r-project.org/bugzilla3/show_bug.cgi?id=15013 it becomes the problem.

Knowing the limit for different running environment: R vinila, different debug modes, would help to understand it.

Best,
Peng

On 08/10/2012 05:16 PM, Simon Urbanek wrote:
> On Aug 10, 2012, at 4:08 PM, Martin Morgan wrote:
>
>> On 08/10/2012 12:04 PM, peter dalgaard wrote:
>>> Not to spoil your fun, but this is getting a bit off-topic for R-help. If you wish to continue the debugging process in public, I think you should move to R-devel.
>>>
>>> Also, it sounds like the problem is in the glmulti package, so you might want to involve its maintainer at some point.
>>
>>
>> actually valgrind complains a lot about rJava, though that can be confusing; the example reproduces, so amenable to investigation. glmulti doesn't have C code and the only unusual dependency is rJava
>>

>
> Actually, this crashes is vanilla R (given low enough stack limit, e.g. ulimit -s 1024) - simply try
>
> terms(as.formula("h~ X1*X2*X3*X4*X5*X6*X7*X8*X9*X10*X11*X12*X13*X14*X15*X16"))
>
> which is what the code below runs. The problem is that it causes a very deep recursion so depending on the stack it will fail (interestingly, it will segfault in the call to R_CheckStack which is paradoxical :)). I think the proper fix would be to use iteration in StripTerm instead of recursion ...
>
> Cheers,
> Simon
>
> FWIW Java is in general not easily traceable through valgrind, unfortunately, because it uses a lot of dirty tricks like JIT and other things. There are some hints in the valgrind FAQ 3.4, though.
>
>
>>> sessionInfo()
>> R version 2.15.1 Patched (2012-06-22 r59603)
>> Platform: x86_64-unknown-linux-gnu (64-bit)
>>
>> locale:
>> [1] en_US.UTF-8
>>
>> attached base packages:
>> [1] stats graphics grDevices utils datasets methods base
>>
>> other attached packages:
>> [1] glmulti_1.0.4 rJava_0.9-3
>>
>>
>> Here's the stack trace starting a little below the top
>>
>> #21190 0x00007ffff78b3b88 in Rf_usemethod (generic=0x9f0c80 "terms", obj=0xbcd040, call=0xbf6fb0, args=0x604d18, rho=0xbd9e70, callrho=0xbf88e8, defrho=0x1a873f0,
>> ans=0x7fffffffb1a8) at /home/mtmorgan/src/R-2-15-branch/src/main/objects.c:339
>> 339 *ans = applyMethod(t, sxp, matchedarg, rho, newrho);
>> (gdb)
>> #21189 0x00007ffff78b3009 in applyMethod (call=0xbca188, op=0xbf67f0, args=0xbdad30, rho=0xbd9e70, newrho=0xbca118) at /home/mtmorgan/src/R-2-15-branch/src/main/objects.c:125
>> 125 ans = applyClosure(call, op, args, rho, newrho);
>> (gdb)
>> #21188 0x00007ffff784c574 in Rf_applyClosure (call=0xbca188, op=0xbf67f0, arglist=0xbdad30, rho=0xbd9e70, suppliedenv=0xbca118)
>> at /home/mtmorgan/src/R-2-15-branch/src/main/eval.c:859
>> 859 PROTECT(tmp = eval(body, newrho));
>> (gdb)
>> #21187 0x00007ffff784b4b5 in Rf_eval (e=0xbf52e0, rho=0xbc8f30) at /home/mtmorgan/src/R-2-15-branch/src/main/eval.c:466
>> 466 tmp = PRIMFUN(op) (e, op, CDR(e), rho);
>> (gdb)
>> #21186 0x00007ffff784e12d in do_begin (call=0xbf52e0, op=0x610710, args=0xbee388, rho=0xbc8f30) at /home/mtmorgan/src/R-2-15-branch/src/main/eval.c:1413
>> 1413 s = eval(CAR(args), rho);
>> (gdb)
>> #21185 0x00007ffff784b4b5 in Rf_eval (e=0xbee3c0, rho=0xbc8f30) at /home/mtmorgan/src/R-2-15-branch/src/main/eval.c:466
>> 466 tmp = PRIMFUN(op) (e, op, CDR(e), rho);
>> (gdb)
>> #21184 0x00007ffff784ef32 in do_set (call=0xbee3c0, op=0x610908, args=0xbedbc8, rho=0xbc8f30) at /home/mtmorgan/src/R-2-15-branch/src/main/eval.c:1715
>> 1715 s = eval(CADR(args), rho);
>> (gdb)
>> #21183 0x00007ffff784b4b5 in Rf_eval (e=0xbedc70, rho=0xbc8f30) at /home/mtmorgan/src/R-2-15-branch/src/main/eval.c:466
>> 466 tmp = PRIMFUN(op) (e, op, CDR(e), rho);
>> (gdb)
>> #21182 0x00007ffff78b2979 in do_internal (call=0xbedc70, op=0x611620, args=0xbc9518, env=0xbc8f30) at /home/mtmorgan/src/R-2-15-branch/src/main/names.c:1228
>> 1228 ans = PRIMFUN(INTERNAL(fun)) (s, INTERNAL(fun), args, env);
>> (gdb)
>> #21181 0x00007ffff78acdea in do_termsform (call=0xbedf48, op=0x6329f0, args=0xbc9518, rho=0xbc8f30) at /home/mtmorgan/src/R-2-15-branch/src/main/model.c:838
>> 838 PROTECT(formula = EncodeVars(CAR(args)));
>> (gdb)
>> #21180 0x00007ffff78ac4e6 in EncodeVars (formula=0xbcd040) at /home/mtmorgan/src/R-2-15-branch/src/main/model.c:629
>> 629 return EncodeVars(CADDR(formula));
>> (gdb)
>> #21179 0x00007ffff78ac5c5 in EncodeVars (formula=0xbcd2a8) at /home/mtmorgan/src/R-2-15-branch/src/main/model.c:641
>> 641 return CrossTerms(CADR(formula), CADDR(formula));
>> (gdb)
>> #21178 0x00007ffff78abafb in CrossTerms (left=0xbcd318, right=0xd7e338) at /home/mtmorgan/src/R-2-15-branch/src/main/model.c:459
>> 459 PROTECT(left = EncodeVars(left));
>> (gdb)
>> #21177 0x00007ffff78ac5c5 in EncodeVars (formula=0xbcd318) at /home/mtmorgan/src/R-2-15-branch/src/main/model.c:641
>> 641 return CrossTerms(CADR(formula), CADDR(formula));
>> (gdb)
>> #21176 0x00007ffff78abc24 in CrossTerms (left=0xbc5558, right=0x16b6e78) at /home/mtmorgan/src/R-2-15-branch/src/main/model.c:471
>> 471 return TrimRepeats(left);
>> (gdb)
>> #21175 0x00007ffff78ab934 in TrimRepeats (list=0xbc5558) at /home/mtmorgan/src/R-2-15-branch/src/main/model.c:404
>> 404 SETCDR(list, TrimRepeats(StripTerm(CAR(list), CDR(list))));
>> (gdb)
>> #21174 0x00007ffff78ab88d in StripTerm (term=0x121c1d8, list=0xbc5590) at /home/mtmorgan/src/R-2-15-branch/src/main/model.c:385
>> 385 tail = StripTerm(term, CDR(list));
>>
>> and so on down to the bottom
>>
>> valgrind says this
>>
>> ==14352== Invalid write of size 4
>> ==14352== at 0xD4BC2BD: ???
>> ==14352== by 0xD4AC437: ???
>> ==14352== by 0xBDE21AE: JavaCalls::call_helper(JavaValue*, methodHandle*, JavaCallArguments*, Thread*) (in /usr/lib/jvm/java-7-openjdk-amd64/jre/lib/amd64/server/libjvm.so)
>> ==14352== by 0xBDE1A44: JavaCalls::call(JavaValue*, methodHandle, JavaCallArguments*, Thread*) (in /usr/lib/jvm/java-7-openjdk-amd64/jre/lib/amd64/server/libjvm.so)
>> ==14352== by 0xBDA5A7E: instanceKlass::call_class_initializer_impl(instanceKlassHandle, Thread*) (in /usr/lib/jvm/java-7-openjdk-amd64/jre/lib/amd64/server/libjvm.so)
>> ==14352== by 0xBDA5AF9: instanceKlass::call_class_initializer(Thread*) (in /usr/lib/jvm/java-7-openjdk-amd64/jre/lib/amd64/server/libjvm.so)
>> ==14352== by 0xBDA5CF1: instanceKlass::initialize_impl(instanceKlassHandle, Thread*) (in /usr/lib/jvm/java-7-openjdk-amd64/jre/lib/amd64/server/libjvm.so)
>> ==14352== by 0xBDA6168: instanceKlass::initialize(Thread*) (in /usr/lib/jvm/java-7-openjdk-amd64/jre/lib/amd64/server/libjvm.so)
>> ==14352== by 0xBDA5FB2: instanceKlass::initialize_impl(instanceKlassHandle, Thread*) (in /usr/lib/jvm/java-7-openjdk-amd64/jre/lib/amd64/server/libjvm.so)
>> ==14352== by 0xBDA6168: instanceKlass::initialize(Thread*) (in /usr/lib/jvm/java-7-openjdk-amd64/jre/lib/amd64/server/libjvm.so)
>> ==14352== by 0xC0BDB8D: Threads::create_vm(JavaVMInitArgs*, bool*) (in /usr/lib/jvm/java-7-openjdk-amd64/jre/lib/amd64/server/libjvm.so)
>> ==14352== by 0xBE00509: JNI_CreateJavaVM (in /usr/lib/jvm/java-7-openjdk-amd64/jre/lib/amd64/server/libjvm.so)
>> ==14352== Address 0x7feff31e0 is not stack'd, malloc'd or (recently) free'd
>>
>>
>>> -pd
>>>
>>> On Aug 10, 2012, at 19:51 , Zhang, Peng wrote:
>>>
>>>> Thanks! It is interesting that Windows has pointed the problem to Java.
>>>> So it is probable that how I did my debug led me to the wrong direction.
>>>>
>>>> Since I was unsure how to debug S4 class, I copied the source implement
>>>> R function from glmulti package into my testing program.
>>>>
>>>> The segmentation fault will appear when I step to "neotete =
>>>> terms(as.formula(paste("h~",paste(preds, collapse="*"))))". That is why
>>>> I have asked my initial question on the board.
>>>>
>>>> The more interesting thing is that if I don't run library(glmulti), but
>>>> just the following lines, I won't have problem when I stepped to that
>>>> terms function.
>>>>
>>>> I am totally lost. It is not clear to me how to debug S4 class.
>>>>
>>>> Best,
>>>> Peng
>>>>
>>>> ### beginning
>>>> library(glmulti)
>>>>
>>>> testdata = cbind(Y=rnorm(100), data.frame(matrix(rnorm(100*50), ncol = 50)))
>>>>
>>>> glmulti =
>>>> function(y, xr, data, exclude, name, intercept, marginality , bunch,
>>>> chunk, chunks,
>>>> level, minsize, maxsize, minK, maxK,
>>>> method,crit,confsetsize,popsize,mutrate,
>>>> sexrate,imm, plotty, report, deltaM, deltaB, conseq,
>>>> fitfunction, resumefile, includeobjects, ...) {
>>>> if (missing(data))
>>>> tete = terms(y)
>>>> else
>>>> tete = terms(y, data=data)
>>>> oo = attr(tete,"order")
>>>> dep = as.character(attr(tete,"variables"))[2]
>>>> int = attr(tete,"intercept")
>>>> preds = as.character(attr(tete,"variables"))[-(1:2)]
>>>> if (level==2 && max(oo)>1) {
>>>> # get all possible interactions
>>>> interac = attr(tete,"term.labels")[oo==2]
>>>> neotete = terms(as.formula(paste("h~",paste(preds, collapse="*"))))
>>>> neointerac= attr(neotete,"term.labels")[attr(neotete,"order")==2]
>>>> # get exclusions
>>>> for (i in interac)
>>>> neointerac=neointerac[neointerac!=i]
>>>> # same for main effects
>>>> mama = attr(tete,"term.labels")[oo==1]
>>>> exma = preds
>>>> for (j in mama)
>>>> exma = exma[exma!=j]
>>>> exma = c(exma,neointerac)
>>>> } else {
>>>> preds = attr(tete,"term.labels")[oo==1]
>>>> exma=c(1)
>>>> }
>>>> call = match.call()
>>>> call[[match("y", names(call))]] = dep
>>>> call[[length(names(call))+1]] = preds
>>>> names(call)[length(names(call))] ="xr"
>>>> call[[length(names(call))+1]] = exma
>>>> names(call)[length(names(call))] ="exclude"
>>>>
>>>> if (missing(data)) {
>>>> call[[length(names(call))+1]] = environment(y)
>>>> names(call)[length(names(call))] ="data"
>>>> }
>>>> eval(call)
>>>> }
>>>>
>>>> debug(glmulti)
>>>>
>>>> glmulti(Y~(X1+X2+X3+X4+X5+X6+X7+X8+X9+X10+X11+X12+X13+X14+X15)*X16,
>>>> xr=NULL, data = testdata, level = 2)
>>>> ###end
>>>>
>>>> On 08/10/2012 11:47 AM, Henric (Nilsson) Winell wrote:
>>>>> On 2012-08-10 15:42, Zhang, Peng wrote:
>>>>>
>>>>>> You are right. I am running Arch Linux. However, I obtained a
>>>>>> segmentation directly, so didn't know where to find the bug??
>>>>>>
>>>>>>> library("glmulti")
>>>>>> Loading required package: rJava
>>>>>>> testdata = cbind(Y=rnorm(100), data.frame(matrix(rnorm(100*50), ncol
>>>>>> = 50)))
>>>>>>> glmulti(Y~(X1+X2+X3+X4+X5+X6+X7+X8+X9+X10+X11+X12+X13+X14+X15)*X16,
>>>>>> data= testdata, level = 2)
>>>>>> Segmentation fault
>>>>>>
>>>>>> Is this information "Error in .jnew("glmulti/ModelGenerator", y,
>>>>>> jarray(xc), .jarray(xq), : java.lang.ArrayIndexOutOfBoundsException:
>>>>>> 15" only in Windows, or did you see it under Fedora as well?
>>>>> Windows only. Fedora just returned "Segmentation fault".
>>>>>
>>>>>
>>>>> //Henric
>>>>>
>>>>>
>>>>>
>>>>>> Thank you!
>>>>>>
>>>>>> Peng
>>>>>>
>>>>>> BTW:
>>>>>>
>>>>>> $ uname -a
>>>>>> Linux Precision 3.4.7-1-ARCH #1 SMP PREEMPT Sun Jul 29 22:02:56 CEST
>>>>>> 2012 x86_64 GNU/Linux
>>>>>>
>>>>>>> sessionInfo()
>>>>>> R version 2.15.1 (2012-06-22)
>>>>>> Platform: x86_64-unknown-linux-gnu (64-bit)
>>>>>>
>>>>>> locale:
>>>>>> [1] LC_CTYPE=en_US.UTF-8 LC_NUMERIC=C
>>>>>> [3] LC_TIME=en_US.UTF-8 LC_COLLATE=en_US.UTF-8
>>>>>> [5] LC_MONETARY=en_US.UTF-8 LC_MESSAGES=en_US.UTF-8
>>>>>> [7] LC_PAPER=C LC_NAME=C
>>>>>> [9] LC_ADDRESS=C LC_TELEPHONE=C
>>>>>> [11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C
>>>>>>
>>>>>> attached base packages:
>>>>>> [1] stats graphics grDevices utils datasets methods base
>>>>>>
>>>>>>
>>>>>> On 08/10/2012 09:25 AM, Henric (Nilsson) Winell wrote:
>>>>>>> On 2012-08-10 06:10, Zhang, Peng wrote:
>>>>>>>
>>>>>>>> Thanks to both for your reply.
>>>>>>>>
>>>>>>>> library(glmulti)
>>>>>>>> testdata = cbind(Y=rnorm(100), data.frame(matrix(rnorm(100*50), ncol
>>>>>>>> = 50)))
>>>>>>>> glmulti(Y~(X1+X2+X3+X4+X5+X6+X7+X8+X9+X10+X11+X12+X13+X14+X15)*X16,
>>>>>>>> data
>>>>>>>> = testdata, level = 2)
>>>>>>>>
>>>>>>>> This is reproducible to get a segmentation fault.
>>>>>>> There's some information missing here, notably the output from
>>>>>>> 'sessionInfo()', but I guess this is under GNU/Linux. I can confirm a
>>>>>>> seg. fault under Fedora FC17 x86_64.
>>>>>>>
>>>>>>> Under Windows 7 64-bit, however, we get some further info:
>>>>>>>
>>>>>>>> library("glmulti")
>>>>>>> Loading required package: rJava
>>>>>>>> testdata = cbind(Y=rnorm(100), data.frame(matrix(rnorm(100*50), ncol
>>>>>>> = 50)))
>>>>>>>> glmulti(Y~(X1+X2+X3+X4+X5+X6+X7+X8+X9+X10+X11+X12+X13+X14+X15)*X16,
>>>>>>> data
>>>>>>> + = testdata, level = 2)
>>>>>>> Initialization...
>>>>>>> Error in .jnew("glmulti/ModelGenerator", y, .jarray(xc),
>>>>>>> .jarray(xq), :
>>>>>>> java.lang.ArrayIndexOutOfBoundsException: 15
>>>>>>>> sessionInfo()
>>>>>>> R version 2.15.1 Patched (2012-08-06 r60178)
>>>>>>> Platform: x86_64-w64-mingw32/x64 (64-bit)
>>>>>>>
>>>>>>> locale:
>>>>>>> [1] LC_COLLATE=Swedish_Sweden.1252 LC_CTYPE=Swedish_Sweden.1252
>>>>>>> [3] LC_MONETARY=Swedish_Sweden.1252 LC_NUMERIC=C
>>>>>>> [5] LC_TIME=Swedish_Sweden.1252
>>>>>>>
>>>>>>> attached base packages:
>>>>>>> [1] stats graphics grDevices utils datasets methods base
>>>>>>>
>>>>>>> other attached packages:
>>>>>>> [1] glmulti_1.0.4 rJava_0.9-3
>>>>>>> So, this doesn't seem to be a bug in R and is thus likely to need the
>>>>>>> attention of the 'glmulti' package's maintainer.
>>>>>>>
>>>>>>>
>>>>>>> HTH,
>>>>>>> Henric
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>> But I have troubles to
>>>>>>>> extract the exact information from this S4 class to make a simpler
>>>>>>>> example because of my limited knowledge on S4 class. The author of the
>>>>>>>> package is busy at the moment, and does not have time to look into it.
>>>>>>>>
>>>>>>>> Peng
>>>>>>>>
>>>>>>>> On 08/09/2012 10:25 PM, R. Michael Weylandt
>>>>>>>> <michael.weylandt_at_gmail.com>
>>>>>>>> wrote:
>>>>>>>>> On Aug 9, 2012, at 9:14 PM, David Winsemius <dwinsemius_at_comcast.net>
>>>>>>>>> wrote:
>>>>>>>>>
>>>>>>>>>> On Aug 9, 2012, at 4:56 PM, Zhang, Peng wrote:
>>>>>>>>>>
>>>>>>>>>>> Dear all,
>>>>>>>>>>>
>>>>>>>>>>> I had a R segmentation fault, and then invoked debug mode and ran
>>>>>>>>>>> step
>>>>>>>>>>> by step.
>>>>>>>>>>> 2. Why does the same function behave differently under debug and
>>>>>>>>>>> regular
>>>>>>>>>>> mode?
>>>>>>>>>> I cannot help you there.
>>>>>>>>>>
>>>>>>>>> Though a reproducible segfault is certainly worth a bug report if
>>>>>>>>> you can do so, in debug or regular modes.
>>>>>>>>>
>>>>>>>>> You may wish to search stackoverflow for tips on how to make a great
>>>>>>>>> reproducible example in R.
>>>>>>>>>
>>>>>>>>> Michael
>>>>>>>> **********************************************************
>>>>>>>> Electronic Mail is not secure, may not be read every day, and should
>>>>>>>> not be used for urgent or sensitive issues
>>>>>>>>
>>>>>>>> ______________________________________________
>>>>>>>> R-help_at_r-project.org mailing list
>>>>>>>> https://stat.ethz.ch/mailman/listinfo/r-help
>>>>>>>> PLEASE do read the posting guide
>>>>>>>> http://www.R-project.org/posting-guide.html
>>>>>>>> and provide commented, minimal, self-contained, reproducible code.
>>>>>>>>
>>>>>> **********************************************************
>>>>>> Electronic Mail is not secure, may not be read every day, and should
>>>>>> not be used for urgent or sensitive issues
>>>>>>
>>>>>>
>>>> **********************************************************
>>>> Electronic Mail is not secure, may not be read every day, and should not be used for urgent or sensitive issues
>>>>
>>>> ______________________________________________
>>>> R-help_at_r-project.org mailing list
>>>> https://stat.ethz.ch/mailman/listinfo/r-help
>>>> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
>>>> and provide commented, minimal, self-contained, reproducible code.
>>
>> --
>> Computational Biology / Fred Hutchinson Cancer Research Center
>> 1100 Fairview Ave. N.
>> PO Box 19024 Seattle, WA 98109
>>
>> Location: Arnold Building M1 B861
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>>
>>



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