fix(profiling): disable on tailcall VM on 8.5.{0..6} for upstream crash#3889
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morrisonlevi wants to merge 2 commits into
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fix(profiling): disable on tailcall VM on 8.5.{0..6} for upstream crash#3889morrisonlevi wants to merge 2 commits into
morrisonlevi wants to merge 2 commits into
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Benchmarks [ profiler ]Benchmark execution time: 2026-05-20 00:06:48 Comparing candidate commit 1a222c9 in PR branch Found 0 performance improvements and 0 performance regressions! Performance is the same for 29 metrics, 7 unstable metrics. |
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Description
Disables the profiler on PHP 8.5.0 through 8.5.6 (inclusive) so it doesn't trigger the tailcall VM vm_interrupt crash fixed in the upcoming PHP 8.5.7 release.
Technically, anything which sets the
vm_interruptcan trigger this crash, such the tracer and even PHP itself with its timeout limit. However, the profiler sets it all the time (roughly every 10 ms) so it is the most common trigger.Affected customers:
You can check your PHP version and VM kind with:
php -r 'echo PHP_VERSION, "\n", (defined("ZEND_VM_KIND") ? ZEND_VM_KIND : "undef"), "\n";'Reviewer checklist