From: Hihin Ruslan <ruslandh@gmail.com>
To: devel@lists.altlinux.org
Subject: [devel] Ошибка выделения памяти в malloc в 32-х битной архитектуре
Date: Sat, 25 Jul 2015 06:17:28 +0300
Message-ID: <201507250617.36319@ruslandh> (raw)
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Здравствуйте !
Разбираясь с тем, почему происходит выпадение в core 32-битной
версии palemoon, пришёл к выводу, что падение происходит в
функции malloc, а именно на этом участке кода (файл malloc.c из
glibc-core):
Вызов из palemoon:
options = malloc (sizeof (cairo_font_options_t));
Код malloc.c:
стр 3350
if (in_smallbin_range(nb)) {
idx = smallbin_index(nb);
bin = bin_at(av,idx);
if ( (victim = last(bin)) != bin) {
if (victim == 0) /* initialization check */
malloc_consolidate(av);
else {
bck = victim->bk;
===> (стр 3359) if (__builtin_expect (bck->fd != victim, 0))
{
errstr = "malloc(): smallbin double linked list corrupted";
goto errout;
}
set_inuse_bit_at_offset(victim, nb);
bin->bk = bck;
bck->fd = bin;
if (av != &main_arena)
victim->size |= NON_MAIN_ARENA;
check_malloced_chunk(av, victim, nb);
void *p = chunk2mem(victim);
if (__builtin_expect (perturb_byte, 0))
alloc_perturb (p, bytes);
return p;
}
}
А именно, судя по всему в victim->bk находится 0, и bck->fd
превращается в null->fd.
Это глюк malloc, или неправильное обращение от palemoon?
Мне всё-же кажется, что самого glibc.
--
А ещё говорят так (fortune):
If men acted after marriage as they do during courtship, there
would be fewer divorces -- and more bankruptcies. -- Frances
Rodman
________________________________________________________________________
С уважением Хихин Руслан
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next reply other threads:[~2015-07-25 3:17 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-25 3:17 Hihin Ruslan [this message]
2015-07-25 9:53 ` Dmitry V. Levin
2015-07-25 9:57 ` Руслан Хихин
2015-07-25 10:33 ` Dmitry V. Levin
2015-07-25 15:05 ` Hihin Ruslan
2015-07-25 15:39 ` Hihin Ruslan
2015-07-25 15:51 ` Dmitry V. Levin
2015-07-25 17:20 ` Hihin Ruslan
2015-07-27 11:16 ` Хихин Руслан
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