ID: 14529
Updated by: [EMAIL PROTECTED]
-Summary: script doesn't always finish output
Reported By: [EMAIL PROTECTED]
Status: Feedback
Bug Type: Output Control
Operating System: Linux RH 7.2
PHP Version: 4.1.2
New Comment:
Can you please try a shapshot from snaps.php.net, my guess is that this
is already fixed.
Derick
Previous Comments:
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[2002-03-04 00:55:05] [EMAIL PROTECTED]
It looks you are having session bug.
It seems you are unset()ing $HTTP_SESSION_VARS or $_SESSION somewhere
in your script, aren't you?
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[2002-03-03 21:12:33] [EMAIL PROTECTED]
I'm seeing the same problem with 4.1.2. Can reproduce, but with no
consistency.
I'm also seeing a problem where PHP isn't responded to POSTs (watching
it in ethereal, I had to post
repeatedly to get a response; the responding page was to set a couple
cookies and do a redirect). Any
possibility that they might be related?
(Had added a comment with a backtrace, but this one looks much more
useful):
#0 0x402ad693 in _zend_is_inconsistent (ht=0x0,
file=0x403fcb84 "zend_hash.c", line=975) at zend_hash.c:84
#1 0x402aff9f in zend_hash_internal_pointer_reset_ex (ht=0x0,
pos=0xbffff090)
at zend_hash.c:975
#2 0x4031da18 in php_session_save_current_state () at session.c:544
#3 0x40320579 in php_session_flush () at session.c:1381
#4 0x403205bd in zm_deactivate_session (type=1, module_number=3)
at session.c:1393
#5 0x402ac614 in module_registry_cleanup (module=0x8054dc8) at
zend_API.c:1165
#6 0x402af394 in zend_hash_apply (ht=0x404808c0,
apply_func=0x402ac5d0 <module_registry_cleanup>) at
zend_hash.c:669
#7 0x402a8a4e in zend_deactivate_modules () at zend.c:585
#8 0x402b9eb0 in php_request_shutdown (dummy=0x0) at main.c:723
#9 0x402b63ff in apache_php_module_main (r=0x80ab44c,
display_source_mode=0)
at sapi_apache.c:96
#10 0x402b71d0 in send_php (r=0x80ab44c, display_source_mode=0,
filename=0x80ab9cc "/usr/local/apache/htdocs/planworld/index.php")
at mod_php4.c:575
#11 0x402b724c in send_parsed_php (r=0x80ab44c) at mod_php4.c:590
#12 0x4004b743 in _ufc_foobar () from /lib/libcrypt.so.1
#13 0x400630b9 in ?? () from /lib/libdb.so.3
#14 0x40063529 in ?? () from /lib/libdb.so.3
#15 0x400354e2 in ?? () from /lib/libcrypt.so.1
#16 0x4004b743 in _ufc_foobar () from /lib/libcrypt.so.1
#17 0x400630b9 in ?? () from /lib/libdb.so.3
#18 0x4006312f in ?? () from /lib/libdb.so.3
#19 0x4005910d in _ufc_foobar () from /lib/libcrypt.so.1
#20 0x400592e3 in _ufc_foobar () from /lib/libcrypt.so.1
#21 0x40059476 in _ufc_foobar () from /lib/libcrypt.so.1
#22 0x40059c34 in _ufc_foobar () from /lib/libcrypt.so.1
#23 0x4005a645 in _ufc_foobar () from /lib/libcrypt.so.1
#24 0x80486dd in ?? () from /usr/local/apache/libexec/mod_caucho.so
#25 0x401589cb in __gconv_transform_internal_utf16 (step=0x80486c0,
data=0x2,
inbuf=0xbffffaa4, inbufend=0x8048560 "U\211åSè",
written=0x804877c,
do_flush=1073786464) at ../iconv/loop.c:151
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[2002-03-03 20:56:34] [EMAIL PROTECTED]
I've been seeing the same thing in 4.1.2. In some cases, it partially
displays pages. In others (I think
this may be related), it doesn't acknowledge a POST until it's been
submitted multiple times (3 or 4
generally). Both behaviors are very inconsistent (they happen
frequently on a site with moderate use, but I
can't reproduce them).
Here's a backtrace:
Program received signal SIGSEGV, Segmentation fault.
0x402ad693 in _zend_is_inconsistent (ht=0x5a5a5a5a,
file=0x403fcb84 "zend_hash.c", line=975) at zend_hash.c:84
84 if (ht->inconsistent==HT_OK) {
(gdb) bt
#0 0x402ad693 in _zend_is_inconsistent (ht=0x5a5a5a5a,
file=0x403fcb84 "
>ýÿþ>ýÿýÿ\025?ýÿG?F?ýÿýÿk?l?\205uTvýÿÌ?ýÿUvýÿË?§v¨vù?ýÿýÿýÿýÿx@z@u@ýÿv@w@ýÿýÿê@î@í@ýÿì@\017yýÿýÿ\204A\205A\203Aýÿ¼A½AÔAýÿýÿýÿýÿUBýÿPBLBHBýÿSBýÿWBTBNBJBQBýÿýÿIBKBcBýÿýÿ§B¦B¤Býÿýÿýÿä|å|ýÿýÿe~N~\027Cýÿ\026CýÿýÿcCýÿýÿ\202\177ýÿ{C|Cýÿ"...,
line=975) at zend_hash.c:84
#1 0x4046b258 in ?? () from /usr/local/apache/libexec/libphp4.so
#2 0x402aff9f in zend_hash_internal_pointer_reset_ex (ht=0x5a5a5a5a,
pos=0xbffff090) at zend_hash.c:975
First symbol in segment of executable not a source symbol
------------------------------------------------------------------------
[2002-02-28 17:15:48] [EMAIL PROTECTED]
Regarding the configure line and your MySQL problems. You should NEVER
(okay this is my opinion) use the bundled MySQL libs. On your
configure line you should do
--with-mysql=/usr | --with-mysql=/usr/local
Just depends on where it put your libs, which you can find like so
[root@somemachine /]# ldconfig -p | grep mysql
libmysqlclient.so.10 (libc6) =>
/usr/local/lib/mysql/libmysqlclient.so.10
libmysqlclient.so (libc6) =>
/usr/local/lib/mysql/libmysqlclient.so
I think the RPM puts it in /usr.
-Chris
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[2002-02-28 16:27:48] [EMAIL PROTECTED]
We are getting closer, I've got a small team of people at this end
working on solving this bug and are now trying to dedicate much more
time and money into getting this bug solved! (Our business success
depends on it) The problem, we only know PHP programming well and are
weaker in the server end of things (I'm the only one with some Linux
knowledge) so we need your help to solve this. Here is a summary of
all things done so far to narrow this down (much already due to your
help). We've seperated everything into sections below.
PROBLEM:
While running some more complex PHP scripts they will not work on
anything newer than 4.0.6 but works 100% on 4.0 -> 4.0.6. The page
simply stops displaying part ways through a script (usually right in
the middle of an echo statement or between echo statements). The
script seemed to finish commands past the point of where it stopped but
is only known through the sessions (seeing nothing else is being
displayed to screen) But, we've discovered when this crash happens
where it has been giving us problems as well so we can not confirm this
anymore.
APACHE ERROR_LOG:
When a page is loaded with my problem scripts I get either 1 or 2
errors in my apache error_log:
[date] [notice] child pid #### exit signal Segmentation fault (11)
(if two errors the second is the same except different pid number)
SCRIPTS CAUSING CRASHES:
These scripts that cause the problems have been in development for
almost 3 years now and are fairly complex. Not all scripts give me
hassles, but from the tests I have done, it appears only scripts that
have sessions AND use fairly large hashes (passed into and out from
sessions via serialize() functions) is where I have problems. Even
complex or large scripts without this in it seem to run fine. All
scripts run fine in PHP versions 4.0.6 or older but not since 4.1.0 or
newer (up to 4.2.2)
PHP compiling configurations:
Have tried compiling with various combinations of options trying to
narrow down if a particular option is what is causing the problems. So
far I can not find anything consistent.
GDB RESULTS:
You gave me the link to the generating bug-traces and I'm having
problems getting it to run apache properly.
I could not find a core file on my server. (Apache isn't generating
them, or I simply can not find them). So I've been using your
suggested method of running the script through gdb itself. Here is
what I've done so far.
Stopped the apache server (tested going to web page and confirmed it
was down), I then typed:
gdb /usr/sbin/httpd
run -X (from inside the gdb prompt)
It then says it's starting /usr/sbin/httpd with a new thread and then
starts a new blank line (while it's waiting for an apache crash
signal).
If at this point I use my browser and go to plain html web page it
works (so that tells me the apache server is running again), BUT if I
go to a php page, I get a page not available error. This means I am
unable to load the pages that will make apache crash.
What am I doing wrong to get apache running with PHP through the gdb?
Also, once httpd is started through gdb, how do I stop it and exit gdb
- I can CNTL-C but apache keeps running and I can't find the process to
kill it. There must be a cleaner way.
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the rest of the comments, please view the bug report online at
http://bugs.php.net/14529
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