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Date: Mon, 23 Mar 2015 13:50:26 +0200
From: "Ivan A. Kosarev" <ivan@ivan-labs.com>
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To: Konstantin Belousov <kostikbel@gmail.com>
Subject: Re: Use of chunksize before initialization
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Cc: freebsd-current@freebsd.org, Ed Maste <emaste@freebsd.org>
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On 03/21/2015 11:31 PM, Konstantin Belousov wrote:
> On Sat, Mar 21, 2015 at 11:20:26AM +0200, Ivan A. Kosarev wrote:
>> On 03/21/2015 03:02 AM, Konstantin Belousov wrote:
>>> On Fri, Mar 20, 2015 at 03:59:52PM +0200, Ivan A. Kosarev wrote:
>>>> #12 0x00000008011b428d in malloc_init_hard () at jemalloc_jemalloc.c:698
>>>> #13 malloc_init () at jemalloc_jemalloc.c:296
>>>> #14 0x0000000801243ea2 in ?? () from /lib/libc.so.7
>>>> #15 0x00000008006a5400 in ?? ()
>>>> #16 0x000000080089e5b0 in ?? () from /libexec/ld-elf.so.1
>>>> #17 0x00007fffffffe0b0 in ?? ()
>>>> #18 0x0000000801139d06 in _init () from /lib/libc.so.7
>>>> #19 0x00007fffffffe0b0 in ?? ()
>>> The backtrace is strange.  Did you compiled malloc with the debugging
>>> symbols, while keep rest of libc without -g ?
>> I've just added the -g flag to CC_FLAGS in the Makefile and made sure to
>> install an unstripped version of the .so . I could investigate more on
>> why the early calls omit debug symbols, if it does any matter.
> I want to understand at what stage of the initialization the access happens.
> This is why I want to see the complete backtrace.

It is jemalloc_constructor() that calls malloc_init(), so it should be 
called directly by the loader.

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