[cfe-dev] Question about Clang/LLVM addresssanitizer

[Kostya Serebryany via cfe-dev]

Ok, let's make a simpler experiment:

#include <sys/mman.h>
#include <stdio.h>
int main() {
  void *beg = (void*)0x67fff8000;
  void *res = mmap(beg, 17179869184, PROT_READ|PROT_WRITE,
     MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS|MAP_NORESERVE, -1, 0);
  if (res == beg)
    printf("PASS\n");
  else
    printf("FAIL\n");
}

Compile this program, run it on both systems, make sure you see PASS on one
and FAIL on the other.
Then send the strace logs to me, just in case.

--kcc


On Wed, Sep 21, 2016 at 12:27 AM, ZhaoKang <zhaokang at mail.tsinghua.edu.cn>
wrote:

> Please see the attached two logs.
> They are the results under strace.
> And, we will try to run on the images you said below.
> If the bug is reproduced there, we will contact with you ASAP.
> Thanks a lot!
>
> Kang
>
>
> -----原始邮件-----
> *发件人:* "Kostya Serebryany" <kcc at google.com>
> *发送时间:* 2016-09-21 13:05:14 (星期三)
> *收件人:* ZhaoKang <zhaokang at mail.tsinghua.edu.cn>
> *抄送:* "Clang Dev" <cfe-dev at lists.llvm.org>
> *主题:* Re: Re: Re: Re: Re: [cfe-dev] Question about Clang/LLVM
> addresssanitizer
>
>
>
> On Tue, Sep 20, 2016 at 10:00 PM, ZhaoKang <zhaokang at mail.tsinghua.edu.cn>
> wrote:
>
>> Hello Kostya,
>>
>> I run the same binary on different VMs, one is redhat5.9 and the other
>> one is redhat 6.5.
>>
>> And dump the outputs to two log files (attachments) .
>>
>> I'm sorry for our VM cannot be accessed by other groups.
>>
>
> Please check if you can reproduce this on any of the OS types available on
> GCE.
> https://cloud.google.com/compute/docs/images
> If/when you verify that it reproduces on one of them, I'll try to debug it
> there.
>
>
>> Please see the attached files, one is failed and another is right.
>>
>
> I need the results of a run under strace.
>
>
>> Many thanks!
>>
>>
>>
>
>
>
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