Bug #75738 [NEW]: mmap/munmap loop?

From: albertcasademont at gmail dot com Operating system: Debian Stretch PHP version: 7.1.12 Package: CGI/CLI related Bug Type: Bug Bug description:mmap/munmap loop? Description: ------------ Hi, We're seeing some random neverending loops on Symfony3 CLI commands. stracing the processes we can see a series of looping calls to mmap/munmap/madvise mmap(NULL, 4198400, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe554fff000 munmap(0x7fe554fff000, 4198400) = 0 mmap(NULL, 6291456, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe554e00000 munmap(0x7fe555201000, 2093056) = 0 madvise(0x7fe554e00000, 4198400, MADV_HUGEPAGE) = 0 Saw bug #75368 but it seems like the issue keeps repeating itself. I'm afraid I can't provide a script to reproduce it, seems to occur randomly, quite frustrating. Any ideas? Thanks -- Edit bug report at https://bugs.php.net/bug.php?id=75738&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=75738&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=75738&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=75738&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=75738&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=75738&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=75738&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=75738&r=needscript Try newer version: https://bugs.php.net/fix.php?id=75738&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=75738&r=support Expected behavior: https://bugs.php.net/fix.php?id=75738&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=75738&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=75738&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=75738&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=75738&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=75738&r=dst IIS Stability: https://bugs.php.net/fix.php?id=75738&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=75738&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=75738&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=75738&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=75738&r=mysqlcfg