Bug #77044 [Opn]: Process Name has lots of null appended

Edit report at https://bugs.php.net/bug.php?id=77044&edit=1 ID: 77044 Updated by: requinix@php.net Reported by: d28b312d at opayq dot com Summary: Process Name has lots of null appended Status: Open Type: Bug Package: FPM related Operating System: CentOS PHP Version: Irrelevant Block user comment: N Private report: N New Comment: If this is to hide the argument list, which I suspect is the case, then a better trick may be to zero out all but the last byte. http://netsplit.com/hiding-arguments-from-ps If the kernel does what the article says then only argv[0] will be exposed, but if not then everything was still deleted. Previous Comments: ------------------------------------------------------------------------ [2018-10-21 22:10:42] d28b312d at opayq dot com Description: ------------ When php-fpm starts it seems to set a wild command line which causes problems with tools such as pgrep -xf. Using: cat /proc/<procid>/cmdline | hexdump -C For example, most normal tools: 00000000 2f 75 73 72 2f 6c 69 62 2f 70 6f 6c 6b 69 74 2d |/usr/lib/polkit-| 00000010 31 2f 70 6f 6c 6b 69 74 64 00 2d 2d 6e 6f 2d 64 |1/polkitd.--no-d| 00000020 65 62 75 67 00 |ebug.| But php-fpm processes: 00000000 70 68 70 2d 66 70 6d 3a 20 6d 61 73 74 65 72 20 |php-fpm: master | 00000010 70 72 6f 63 65 73 73 20 28 2f 65 74 63 2f 70 68 |process (/etc/ph| 00000020 70 2d 66 70 6d 2e 63 6f 6e 66 29 00 00 00 00 00 |p-fpm.conf).....| 00000030 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |...............| This applies to all php-fpm processes, and so far, _no_ other processes on my system , which leads me to believe it's a bug in php-fpm. Expected result: ---------------- 00000000 70 68 70 2d 66 70 6d 3a 20 6d 61 73 74 65 72 20 |php-fpm: master | 00000010 70 72 6f 63 65 73 73 20 28 2f 65 74 63 2f 70 68 |process (/etc/ph| 00000020 70 2d 66 70 6d 2e 63 6f 6e 66 29 00 |p-fpm.conf).| Actual result: -------------- 00000000 70 68 70 2d 66 70 6d 3a 20 6d 61 73 74 65 72 20 |php-fpm: master | 00000010 70 72 6f 63 65 73 73 20 28 2f 65 74 63 2f 70 68 |process (/etc/ph| 00000020 70 2d 66 70 6d 2e 63 6f 6e 66 29 00 00 00 00 00 |p-fpm.conf).....| 00000030 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |...............| ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=77044&edit=1