#32838 [NEW]: child processes opened with proc_open freeze the script

From: mjpph at stardust dot fi Operating system: Linux PHP version: 5.0.4 PHP Bug Type: Program Execution Bug description: child processes opened with proc_open freeze the script Description: ------------ I've created three scripts during some time, which of the latest is under PHP 5.0.4. It opens hlds or srcds process as a child process using proc_open. Every pipe is made non-blocking also there are no infinite loops except the one that selects the child process's stdout pipe. The script reads and runs succesfully for some time, then it suddenly freezes. All buffering is turned off that can be turned off, I also added some DEBUG printouts in the code and it even once freezed in the middle of a single print. The same thing happens with pty and pipe support. Everything has been checked out dozens of times. Both the child process's stdout and stderr pipes are selected and read constantly. If the child process is terminated from a shell with a kill command the php script suddenly exits without any error or warning message even though it should keep looping the child process, which it normally does if it doesn't freeze. This behaviour is only happening with hlds and srcds child processes. I've run thousands of execution times of hltv's witht the same script and it has never freezed. Srcds and hlds processes output a lot more data though. The child process actually continues to run without any problems even if the proc_open is done without pipes and the script has frozen. Obviously the php script as a control script becomes completely useless after this. -- Edit bug report at http://bugs.php.net/?id=32838&edit=1 -- Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=32838&r=trysnapshot4 Try a CVS snapshot (php5.0): http://bugs.php.net/fix.php?id=32838&r=trysnapshot50 Try a CVS snapshot (php5.1): http://bugs.php.net/fix.php?id=32838&r=trysnapshot51 Fixed in CVS: http://bugs.php.net/fix.php?id=32838&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=32838&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=32838&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=32838&r=needscript Try newer version: http://bugs.php.net/fix.php?id=32838&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=32838&r=support Expected behavior: http://bugs.php.net/fix.php?id=32838&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=32838&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=32838&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=32838&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=32838&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=32838&r=dst IIS Stability: http://bugs.php.net/fix.php?id=32838&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=32838&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=32838&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=32838&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=32838&r=mysqlcfg