Re: jemalloc SEGV problem

[Channa <channa.kad%gmail.com@localhost>]

Hi,
I checked the implementation the problem i found was in the following macro
it was declared as
#define CHUNK_2POW_DEFAULT 20

I changed it to 12 and malloc works fine.I think for my architecture
the pagesize is 4K so the value
12 works.

Do you have any idea on the above??

Thanks & Regards,
Channa


2008/11/10 Channa <channa.kad%gmail.com@localhost>:
> Yes , I do understand the printf calls malloc where the system crashes.
> I have not modified any internal structures in the malloc implementation.
> Its just a direct jemalloc.c taken from NetBSD CVS repo.
>
> Regards,
> Channa
>
> 2008/11/7 Christos Zoulas <christos%astron.com@localhost>:
>> In article 
>> <515c64960811062111l2308407cve5adf4d70f16d75d%mail.gmail.com@localhost>,
>> Channa  <channa.kad%gmail.com@localhost> wrote:
>>>Hi,
>>>Yes i included
>>>All these header files.
>>>
>>>#include <stdio.h>
>>>#include <stdlib.h>
>>>#include <string.h>
>>>int main()
>>>{
>>>char *ptr;
>>>ptr=malloc(10);
>>>strcpy(ptr,"hello");
>>>printf("%s\n",ptr);
>>>return 0;
>>>}
>>>
>>>But i am not able to understand where exactly is the problem to use 
>>>jemalloc.c
>>>
>>>Since in the jemalloc.c code i have not modified much apart from the
>>>things i mentioned in my prev mail.
>>>
>>>Thanks in Advance,
>>>Channagoud
>>>
>>>2008/11/6 Christos Zoulas <christos%astron.com@localhost>:
>>>> In article 
>>>> <515c64960811060431g3f4301e3se4a52cb4183a5f95%mail.gmail.com@localhost>,
>>>> Channa  <channa.kad%gmail.com@localhost> wrote:
>>>>>Hi,
>>>>>I am using the jemalloc.c file for my own library i could successfully
>>>build it.
>>>>>
>>>>>But when i run a test cases  i am getting segmentation fault.
>>>>>
>>>>>The stack trace is as below:
>>>>>#0  0x4006c304 in arena_run_split () from
>>>>>/home/channagoud/channagoud_work/ARM/GIT/jemalloc/sslibc/build/lib//libsonyc.so
>>>>>#1  0x4006cb6c in arena_run_alloc () from
>>>>>/home/channagoud/channagoud_work/ARM/GIT/jemalloc/sslibc/build/lib//libsonyc.so
>>>>>#2  0x4006e8a4 in arena_malloc () from
>>>>>/home/channagoud/channagoud_work/ARM/GIT/jemalloc/sslibc/build/lib//libsonyc.so
>>>>>#3  0x4006ea50 in malloc () from
>>>>>/home/channagoud/channagoud_work/ARM/GIT/jemalloc/sslibc/build/lib//libsonyc.so
>>>>>#4  0x4007512c in __smakebuf () from
>>>>>/home/channagoud/channagoud_work/ARM/GIT/jemalloc/sslibc/build/lib//libsonyc.so
>>>>>#5  0x4007ab08 in __swsetup () from
>>>>>/home/channagoud/channagoud_work/ARM/GIT/jemalloc/sslibc/build/lib//libsonyc.so
>>>>>#6  0x400747e0 in __sfvwrite () from
>>>>>/home/channagoud/channagoud_work/ARM/GIT/jemalloc/sslibc/build/lib//libsonyc.so
>>>>>#7  0x400757e8 in puts () from
>>>>>/home/channagoud/channagoud_work/ARM/GIT/jemalloc/sslibc/build/lib//libsonyc.so
>>>>>#8  0x00008494 in main () at test.c:5
>>
>> One thing to note here is that you are dying in the malloc() call from
>> the printf(), not the first one...
>>
>> christos
>>
>>
>