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https://issues.apache.org/activemq/browse/AMQCPP-203?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=47202#action_47202
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Alexander Martens commented on AMQCPP-203:
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Hi!
Concerning the weekend test, another segmentation fault was observed a few
hours later, again at
(*c->plain_cleanup_fn)((void *)c->data);
And yes *c is
(gdb) p *c
$1 = {next = 0x0, data = 0x0, plain_cleanup_fn = 0xfffffffe, child_cleanup_fn =
0}
if we go upwards, until
#3 0x4057abdb in apr_thread_exit (thd=0x91324a0, retval=0) at
threadproc/unix/thread.c:206
206 apr_pool_destroy(thd->pool);
We can do some prints that I'm not sure how interesting they might actually be:
(gdb) p *thd
$6 = {pool = 0x41800b90, td = 0x91324b8, data = 0x4150d3e0, func = 0x4030586e
<decaf::lang::Thread::runCallback(apr_thread_t*, void*)>, exitval = 0}
(gdb) p *thd->pool
$7 = { parent = 0x41800b90, child = 0x91f5688, sibling = 0x41800b90, ref = 0x1,
cleanups = 0x40000400, free_cleanups = 0xc2694000, allocator = 0x86ba7290,
subprocesses = 0x0, abort_fn = 0, user_data = 0x0, tag = 0x0, active = 0x0,
self = 0x0, self_first_avail = 0x0, pre_cleanups = 0x0, free_pre_cleanups = 0x0}
(gdb) p *thd->pool->child
$8 = {parent = 0x1, child = 0x0, sibling = 0x41800b58, ref = 0x1, cleanups =
0x0, free_cleanups = 0x1, allocator = 0x41800b14, subprocesses = 0x1, abort_fn
= 0, user_data = 0x0, tag = 0x0, active = 0x0, self = 0x0, self_first_avail =
0x0, pre_cleanups = 0x0, free_pre_cleanups = 0x0}
(gdb) p *thd->pool->child->sibling
$9 = {parent = 0xfffffffe, child = 0x0, sibling = 0x0, ref = 0x0, cleanups =
0x0, free_cleanups = 0x0, allocator = 0x0, subprocesses = 0x0, abort_fn = 0,
user_data = 0x0, tag = 0x0, active = 0x0, self = 0x0, self_first_avail = 0x0,
pre_cleanups = 0x41800b90, free_pre_cleanups = 0x91f5688}
Don't know if this says somethign to you. On $7, parent==sibling looks awkward
to me. In $8 and $9 parent seems to be sick.
> Segmentation Fault in Integration tests occurs occasionally.
> ------------------------------------------------------------
>
> Key: AMQCPP-203
> URL: https://issues.apache.org/activemq/browse/AMQCPP-203
> Project: ActiveMQ C++ Client
> Issue Type: Sub-task
> Components: Integration Tests
> Affects Versions: 2.2.1
> Environment: CentOS 5.2 / REHL / Fedora 9
> Reporter: Timothy Bish
> Assignee: Timothy Bish
> Fix For: 2.2.2
>
> Attachments: BufferedInputStream.cpp.patch, segfault.6517.tar.gz,
> segfault.bufferedinputstream.log.gz, segfaults.barak.tar.gz,
> segfaults.tar.gz, weekend.puzzle.tar.gz
>
>
> While running the integration tests in a long loop an occasional Segmentation
> fault has been seen.
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