improper handling of dlpened's C++/atexit() code?

[Alexander Kabaev]

On Thu, 11 May 2006 20:57:20 -0400
"m m" <needacoder at gmail.com> wrote:

>  I am writing in regard to PR at
> http://www.freebsd.org/cgi/query-pr.cgi?pr=bin%2F59552 .  I am
> experiencing behavior on 6.1-PRERELEASE FreeBSD 6.1-PRERELEASE #11:
> Sun Mar 26 00:03:52 EST 2006 which looks a lot like something that
> would be caused by this PR. This happens when apache-1.3 processes
> that run with Mason code receive a SIGUSR1 (when newsyslog does log
> rotation) and apache gracefully kills off all processes when
> restarting.  The following is the stack trace that lead me to this PR:
> 
> > #0  0x00000000 in ?? ()
> > #1  0x2949dad8 in ?? ()
> > #2  0x294a02c4 in ?? ()
> > #3  0x281ca708 in ?? () from /lib/libc.so.6
> > #4  0xbfbfe708 in ?? ()
> > #5  0x28196556 in endhostent () from /lib/libc.so.6
> > #6  0x2949ed4c in ?? ()
> > #7  0x280a9980 in ?? () from /libexec/ld-elf.so.1
> > #8  0x280a9878 in ?? () from /libexec/ld-elf.so.1
> > #9  0xbfbfe718 in ?? ()
> > #10 0x2808d5ef in find_symdef () from /libexec/ld- elf.so.1
> > #11 0x2808da7c in find_symdef () from /libexec/ld-elf.so.1
> > #12 0x281ba09a in __cxa_finalize () from /lib/libc.so.6
> > #13 0x281b9d9a in exit () from /lib/libc.so.6
> > #14 0x0805cd5b in clean_child_exit (code=692716228) at
> > http_main.c:522 #15 0x0805e707 in just_die (sig=30) at
> > http_main.c:3202 #16 0x0805e72a in usr1_handler (sig=692716228) at
> > http_main.c:3212 #17 0xbfbfffb4 in ?? ()
> > #18 0x0000001e in ?? ()
> > #19 0x00000000 in ?? ()
> > #20 0xbfbfe7e0 in ?? ()
> > #21 0x00000002 in ?? ()
> > #22 0x0805e710 in just_die () at http_main.c:3202
> > #23 0x0805fdae in child_main (child_num_arg=692716228) at
> > http_main.c:4571 #24 0x0806046e in make_child (s=0x294a02c4,
> > slot=0, now=0) at http_main.c:5051
> > #25 0x080604f8 in startup_children (number_to_start=5) at
> > http_main.c:5078 #26 0x08060b11 in standalone_main (argc=2,
> > argv=0xbfbfeca0) at http_main.c:5410
> > #27 0x08061392 in main (argc=2, argv=0xbfbfeca0) at http_main.c:5767
> 
> Please let me know if you have any thoughts on the subject or if this
> is completely unrelated problem.  Thanks!
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You'll need to build ld-elf.so.1 and libc.so.6 to get a sensible
backtrace.

-- 
Alexander Kabaev
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