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ps_call_handler() returned on the recursive-call rejection branch before reaching the argv cleanup loop, leaking one ref per owned argument. The read/write/destroy/validate_sid/update_timestamp callers copy the session id and data into argv and rely on ps_call_handler() to release them, so a handler that re-enters session machinery (for example calling session_destroy() from within a write handler) leaks those strings. Fold the handler call into an else branch so the cleanup loop always runs.
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Submitted upstream as php#22382. |
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ps_call_handler() returns on the recursive-call rejection branch before the argv cleanup loop, leaking one ref per owned argument. A save handler that re-enters session machinery (for example session_destroy() from within write()) leaks the copied session id and data strings; valgrind under USE_ZEND_ALLOC=0 shows 64 bytes definitely lost per trip. Folding the handler call into an else branch runs the cleanup unconditionally.