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Crash on out of memory #24584
Description
Description
php2shell was a consequence of PHP trying to recover from out of memory. An alternative approach, which is likely much simpler to maintain, is to not even attempt to recover. Instead, treat OOM as fatal and call _exit or abort, terminating the process. The supervisor can then restart it.
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Krishmal2004 commentedon Oct 23, 2026
@DemiMarie can you assign this issue
DemiMarie commentedon Oct 23, 2026
@Krishmal2004 assign to whom? I’m a security researcher, not a PHP core developer.
ndossche commentedon Oct 23, 2026
This is a bit of an oversimplification.
This is not acceptable for environments like ZTS. The current behaviour was chosen deliberately.
krustfurt commentedon Oct 27, 2026
I thought when PHP exceeds memory defined in php.ini's memory_limit it exit with error by default?
If this is not default behavior why PHP doesn't exit with error when OOM happens?
n0099 commentedon Oct 27, 2026
When running as a thread with ZTS version: https://stackoverflow.com/questions/58918146/why-php-zts-is-disabled-by-default, you cannot simply exit the whole process as you are just one of many threads in this process, and others may have no relationship to PHP.