ID: 32092
User updated by: stanislav dot voroniy at portavita dot nl
Reported By: stanislav dot voroniy at portavita dot nl
Status: Open
Bug Type: Session related
Operating System: Linux
PHP Version: 4.3.10
New Comment:
Adding to the end of the scripts call to session_write_close() solves
the problem. But as far as I can understand it should be done
automatically always, but some times it does not happens.
Previous Comments:
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[2005-02-24 15:58:25] stanislav dot voroniy at portavita dot nl
Description:
------------
In my application running Apache 2.0.46/php 4.3.10 in some scripts
after complte execution file in /tmp/sess_xxxxx stays open. I've done
tracing of apache processes with strace and found the following:
process A do open /tmp/sess_ file, flock it, execute script, close
connection, but does not close /tmp/sess_ file. Any further request
within this session is haging - further processes try to flock
/tmp/sess_ file that stays open in process A and gets infinitive wait
within the flock syscall.
Reproduce code:
---------------
I can't reproduce it in separate script. But the same application under
Apache 1.3/PHP 4.3.4 works fine.
Expected result:
----------------
Sessions hangs.
Actual result:
--------------
Normal run of scripts:
14:40:58.514489 open("/tmp/sess_89b3f6140bce299259e0f810037c2d59",
O_RDWR|O_CREAT, 0600) = 29
14:40:58.514559 flock(29, LOCK_EX) = 0
14:40:58.514604 fcntl64(29, F_SETFD, FD_CLOEXEC) = 0
14:40:58.514646 fstat64(29, {st_mode=S_IFREG|0600, st_size=1976, ...})
= 0
14:40:58.514728 pread(29, "xxxxx"..., 1976, 0) = 1976
......
14:40:58.667724 ftruncate(29, 0) = 0
14:40:58.667807 pwrite(29, "xxxx"..., 1371, 0) = 1371
14:40:58.667923 close(29) = 0
Broken scripts:14:35:15.776816
open("/tmp/sess_89b3f6140bce299259e0f810037c2d59", O_RDWR|O_CREAT,
0600) = 29
14:35:15.776879 flock(29, LOCK_EX) = 0
14:35:15.776925 fcntl64(29, F_SETFD, FD_CLOEXEC) = 0
14:35:15.776966 fstat64(29, {st_mode=S_IFREG|0600, st_size=1976, ...})
= 0
14:35:15.777041 pread(29, "xxxxx" 1976, 0) = 1976
and no operation any more on file 29...
Next request within the same session:14:35:16.187099
open("/tmp/sess_89b3f6140bce299259e0f810037c2d59", O_RDWR|O_CREAT,
0600) = 29
14:35:16.187167 flock(29, LOCK_EX <unfinished ...>
In /proc/<pid>/fd/ of idle apache process after execution of "broken
scripts" I can see file 29 -> /tmp/sess_... still open.
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Edit this bug report at http://bugs.php.net/?id=32092&edit=1
