child_process: clear timeout timer on spawn-time error too - #65506
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kishore280 wants to merge 1 commit into
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child_process: clear timeout timer on spawn-time error too#65506kishore280 wants to merge 1 commit into
kishore280 wants to merge 1 commit into
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When spawn() fails at the OS level (ENOENT, EACCES, EAGAIN, EMFILE, ENFILE), the resulting ChildProcess only ever emits 'error', never 'exit'. The `timeout` option's cleanup only listened for 'exit', so the timer stayed armed for the full `timeout` duration on any spawn-time failure, holding the event loop open well after the promise/callback had already settled via 'error'. Clear the timer on 'error' as well as 'exit'. Fixes: nodejs#65504 Signed-off-by: kishore280 <maheshwarankishore@gmail.com>
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Aug 23, 2026
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timeout's only cleanup waschild.once('exit', clearTimeout). A spawn-time failure (ENOENT etc.) only emitserror, neverexit, so the timer stayed armed for the fulltimeoutduration. Clear it onerrortoo.Checked: doesn't double-fire or race with the timeout's own kill-failure path (
try { child.kill() } catch { child.emit('error') }). Thatemit('error')runs synchronously before the timeout callback's owntimeoutId = null, soclearSpawnTimeoutsees the already-fired timer id and callsclearTimeouton it - a documented no-op. The callback's own null-assignment right after is then redundant but harmless.Fixes: #65504