Psalm fails during palarell scanning

[jorgsowa]

I have the following errors running Psalm in docker container:

1st run

vendor-tools/psalm/vendor/bin/psalm --set-baseline=psalm-baseline.xml

JIT acceleration: ON

Target PHP version: 8.2 (inferred from composer.json) Enabled extensions: dom, mysqli, pdo, simplexml (unsupported extensions: bz2, fileinfo).

Running on PHP 8.2.27.

Scanning files...

9131 / 9131...[unknown][ERROR] Uncaught Amp\Sync\ChannelException thrown in event loop callback Psalm\Internal\Fork\ForkContext::Amp\Parallel\Worker\Internal{closure} defined in /var/www//vendor-tools/psalm/vendor/amphp/parallel/src/Worker/Internal/task-runner.php:47; use Revolt\EventLoop::setErrorHandler() to gracefully handle such exceptions: Sending on the channel failed. Did the context die? {"file":"/var/www//vendor-tools/psalm/vendor/revolt/event-loop/src/EventLoop/UncaughtThrowable.php","line":13,"exception":{},"breadcrumbs":[]}
[unknown][ERROR] Uncaught Amp\Sync\ChannelException thrown in event loop callback Psalm\Internal\Fork\ForkContext::Amp\Parallel\Worker\Internal{closure} defined in /var/www//vendor-tools/psalm/vendor/amphp/parallel/src/Worker/Internal/task-runner.php:47; use Revolt\EventLoop::setErrorHandler() to gracefully handle such exceptions: Sending on the channel failed. Did the context die? {"file":"/var/www//vendor-tools/psalm/vendor/revolt/event-loop/src/EventLoop/UncaughtThrowable.php","line":13,"exception":{},"breadcrumbs":[]}
Script vendor-tools/psalm/vendor/bin/psalm --set-baseline=psalm-baseline.xml handling the psalm:set event returned with error code 9

2nd run

vendor-tools/psalm/vendor/bin/psalm --set-baseline=psalm-baseline.xml

JIT acceleration: ON

Target PHP version: 8.2 (inferred from composer.json) Enabled extensions: dom, mysqli, pdo, simplexml (unsupported extensions: bz2, fileinfo).

Running on PHP 8.2.27.

Scanning files...

9131 / 9131...[unknown][ERROR] The context stopped responding, potentially due to a fatal error or calling exit {"file":"/var/www//vendor-tools/psalm/vendor/amphp/parallel/src/Context/Internal/AbstractContext.php","line":44,"exception":{},"breadcrumbs":[]}
[unknown][ERROR] The context stopped responding, potentially due to a fatal error or calling exit {"file":"/var/www//vendor-tools/psalm/vendor/amphp/parallel/src/Context/Internal/AbstractContext.php","line":44,"exception":{},"breadcrumbs":[]}
Script vendor-tools/psalm/vendor/bin/psalm --set-baseline=psalm-baseline.xml handling the psalm:set event returned with error code 1

During the next runs, those 2 errors happen alternately. Run with --debug option works smoothly without any issues.

PHP: PHP 8.2.27 (cli) (built: Feb 14 2025 20:50:47) (NTS)
Psalm: Psalm 6.7.1@a2f190972555ea01b0cfcc1913924d6c5fc1a64e

[psalm-github-bot]

Hey @jorgsowa, can you reproduce the issue on https://psalm.dev? These will be used as phpunit tests when implementing the feature or fixing this bug.

[danog]

Could you try running on PHP 8.4.4?

[jorgsowa]

I have the same issue

vendor-tools/psalm/vendor/bin/psalm --set-baseline=psalm-baseline.xml

Running on PHP 8.4.4.

JIT acceleration: ON

JIT compilation in progress... Done.

Target PHP version: 8.2 (inferred from composer.json) Enabled extensions: dom, mysqli, pdo, simplexml (unsupported extensions: bz2, fileinfo).

Scanning files...

9202 / 9202...[unknown][ERROR] Uncaught Amp\Sync\ChannelException thrown in event loop callback Psalm\Internal\Fork\ForkContext::{closure:{closure:/var/www//vendor-tools/psalm/vendor/amphp/parallel/src/Worker/Internal/task-runner.php:14}:47} defined in /var/www//vendor-tools/psalm/vendor/amphp/parallel/src/Worker/Internal/task-runner.php:47; use Revolt\EventLoop::setErrorHandler() to gracefully handle such exceptions: Sending on the channel failed. Did the context die? {"file":"/var/www//vendor-tools/psalm/vendor/revolt/event-loop/src/EventLoop/UncaughtThrowable.php","line":13,"exception":{},"breadcrumbs":[]}
[unknown][ERROR] Uncaught Amp\Sync\ChannelException thrown in event loop callback Psalm\Internal\Fork\ForkContext::{closure:{closure:/var/www//vendor-tools/psalm/vendor/amphp/parallel/src/Worker/Internal/task-runner.php:14}:47} defined in /var/www//vendor-tools/psalm/vendor/amphp/parallel/src/Worker/Internal/task-runner.php:47; use Revolt\EventLoop::setErrorHandler() to gracefully handle such exceptions: Sending on the channel failed. Did the context die? {"file":"/var/www//vendor-tools/psalm/vendor/revolt/event-loop/src/EventLoop/UncaughtThrowable.php","line":13,"exception":{},"breadcrumbs":[]}
Script vendor-tools/psalm/vendor/bin/psalm --set-baseline=psalm-baseline.xml handling the psalm:set event returned with error code 9

[jorgsowa]

Even when I try to run using 1 thread it fails.

Executing "php composer.phar run psalm" in "" container

vendor-tools/psalm/vendor/bin/psalm --threads=1

Running on PHP 8.2.27, Psalm 6.8.6@34ba9e1e5ea2e7396d3e2e644ee3e3a1d4336603.

JIT acceleration: ON

JIT compilation in progress... Done.

Target PHP version: 8.2 (inferred from composer.json) Enabled extensions: dom, mysqli, pdo, simplexml (unsupported extensions: bz2, fileinfo).

Scanning files...

9263 / 9263...[unknown][ERROR] The context stopped responding, potentially due to a fatal error or calling exit {"file":"/var/www//vendor-tools/psalm/vendor/amphp/parallel/src/Context/Internal/AbstractContext.php","line":44,"exception":{},"breadcrumbs":[]}
[unknown][ERROR] The context stopped responding, potentially due to a fatal error or calling exit {"file":"/var/www//vendor-tools/psalm/vendor/amphp/parallel/src/Context/Internal/AbstractContext.php","line":44,"exception":{},"breadcrumbs":[]}
Script vendor-tools/psalm/vendor/bin/psalm --threads=1 handling the psalm event returned with error code 1

[danog]

@jorgsowa could you please try running again with the latest 6.8.8

[jorgsowa]

Different error now.

Running on PHP 8.2.27, Psalm 6.8.8@1361cd33008feb3ae2b4a93f1860e14e538ec8c2.

JIT acceleration: ON

JIT compilation in progress... Done.

Target PHP version: 8.2 (inferred from composer.json) Enabled extensions: dom, mysqli, pdo, simplexml (unsupported extensions: bz2, fileinfo).

Scanning files...

9269 / 9269...[unknown][ERROR] Uncaught Amp\Sync\ChannelException thrown in event loop callback Psalm\Internal\Fork\ForkContext::Amp\Parallel\Worker\Internal{closure} defined in /var/www//vendor-tools/psalm/vendor/amphp/parallel/src/Worker/Internal/task-runner.php:47; use Revolt\EventLoop::setErrorHandler() to gracefully handle such exceptions: Sending on the channel failed. Did the context die? {"file":"/var/www//vendor-tools/psalm/vendor/revolt/event-loop/src/EventLoop/UncaughtThrowable.php","line":13,"exception":{},"breadcrumbs":[]}
[unknown][ERROR] Uncaught Amp\Sync\ChannelException thrown in event loop callback Psalm\Internal\Fork\ForkContext::Amp\Parallel\Worker\Internal{closure} defined in /var/www//vendor-tools/psalm/vendor/amphp/parallel/src/Worker/Internal/task-runner.php:47; use Revolt\EventLoop::setErrorHandler() to gracefully handle such exceptions: Sending on the channel failed. Did the context die? {"file":"/var/www//vendor-tools/psalm/vendor/revolt/event-loop/src/EventLoop/UncaughtThrowable.php","line":13,"exception":{},"breadcrumbs":[]}
[unknown][ERROR] The event loop is already running {"file":"/var/www//vendor-tools/psalm/vendor/revolt/event-loop/src/EventLoop/Internal/AbstractDriver.php","line":109,"exception":{},"breadcrumbs":[]}
[unknown][ERROR] The event loop is already running {"file":"/var/www//vendor-tools/psalm/vendor/revolt/event-loop/src/EventLoop/Internal/AbstractDriver.php","line":109,"exception":{},"breadcrumbs":[]}
[unknown][ERROR] The event loop is already running {"file":"/var/www//vendor-tools/psalm/vendor/revolt/event-loop/src/EventLoop/Internal/AbstractDriver.php","line":109,"exception":{},"breadcrumbs":[]}
[unknown][ERROR] The event loop is already running {"file":"/var/www//vendor-tools/psalm/vendor/revolt/event-loop/src/EventLoop/Internal/AbstractDriver.php","line":109,"exception":{},"breadcrumbs":[]}
[unknown][ERROR] The event loop is already running {"file":"/var/www//vendor-tools/psalm/vendor/revolt/event-loop/src/EventLoop/Internal/AbstractDriver.php","line":109,"exception":{},"breadcrumbs":[]}
[unknown][ERROR] The event loop is already running {"file":"/var/www//vendor-tools/psalm/vendor/revolt/event-loop/src/EventLoop/Internal/AbstractDriver.php","line":109,"exception":{},"breadcrumbs":[]}
Script vendor-tools/psalm/vendor/bin/psalm --threads=8 --scan-threads=8 handling the psalm-ci event returned with error code 9

[jorgsowa]

I don't know whether it's related but now it fails even in the CI.

Running on PHP 8.2.28, Psalm 6.12.0@cf420941d061a57050b6c468ef2c778faf40aee2.

JIT acceleration: ON

JIT compilation in progress... Done.

Target PHP version: 8.2 (inferred from composer.json) Enabled extensions: dom, mysqli, pdo, redis, simplexml (unsupported extensions: bz2, fileinfo).

Error: n][ERROR] Worker exited due to signal 9! {"file":"/home/runner/work/server/vendor-tools/psalm/vendor/vimeo/psalm/src/Psalm/Internal/Fork/ForkContext.php","line":239,"exception":{},"breadcrumbs":[]}
PHP Fatal error: Uncaught Amp\Parallel\Context\ContextException: Worker exited due to signal 9! in /home/runner/work/server/vendor-tools/psalm/vendor/vimeo/psalm/src/Psalm/Internal/Fork/ForkContext.php:239
Stack trace:
#0 /home/runner/work/server/vendor-tools/psalm/vendor/vimeo/psalm/src/Psalm/Internal/Fork/ForkContext.php(250): Psalm\Internal\Fork\ForkContext->checkExit()
#1 /home/runner/work/server/vendor-tools/psalm/vendor/vimeo/psalm/src/Psalm/Internal/Fork/ForkContext.php(196): Psalm\Internal\Fork\ForkContext->close()
#2 [internal function]: Psalm\Internal\Fork\ForkContext->__destruct()
#3 {main}
thrown in /home/runner/work/server/vendor-tools/psalm/vendor/vimeo/psalm/src/Psalm/Internal/Fork/ForkContext.php on line 239
Script vendor-tools/psalm/vendor/bin/psalm --update-baseline --threads=8 --scan-threads=8 handling the psalm:update event returned with error code 255

[danog]

This error is related to an OOM error, you should add some swap space.

[jorgsowa]

The original error is not resolved, though.

[danog]

What do you get when running with the official docker image? If it's signal 9, then it's OOM again

[CaptainSavage]

Same

user@40c24a768cf3:/project$ vendor/bin/psalm --threads=12

Running on PHP 8.4.10, Psalm 6.12.0@cf420941d061a57050b6c468ef2c778faf40aee2.

JIT acceleration: ON

JIT compilation in progress... Done.

Target PHP version: 8.4 (set by config file) Enabled extensions: dom, pdo, simplexml, soap (unsupported extensions: imagick).


Scanning files...

16895 / 16895...

Analyzing files...

███████████████████████████████████████████████████▊░░░░░░░░  8536 / 9886 (86%)
Processing ... is taking 10 seconds...
███████████████████████████████████████████████████████████▊  9877 / 9886 (99%)
Processing ... is taking 20 seconds...

Processing ... is taking 10 seconds...

Processing ... is taking 30 seconds...
Uncaught Amp\Parallel\Context\ContextException: Worker exited due to signal 9! in /apis/vendor/vimeo/psalm/src/Psalm/Internal/Fork/ForkContext.php:239
Stack trace:
#0 /apis/vendor/vimeo/psalm/src/Psalm/Internal/Fork/ForkContext.php(250): Psalm\Internal\Fork\ForkContext->checkExit()
#1 /apis/vendor/amphp/parallel/src/Worker/Internal/ContextWorker.php(75): Psalm\Internal\Fork\ForkContext->close()
#2 /apis/vendor/amphp/parallel/src/Worker/Internal/ContextWorker.php(120): Amp\Parallel\Worker\Internal\ContextWorker::{closure:Amp\Parallel\Worker\Internal\ContextWorker::__construct():58}()
#3 /apis/vendor/revolt/event-loop/src/EventLoop/Internal/AbstractDriver.php(430): Amp\Parallel\Worker\Internal\ContextWorker::{closure:Amp\Parallel\Worker\Internal\ContextWorker::receive():116}()
#4 /apis/vendor/revolt/event-loop/src/EventLoop/Internal/AbstractDriver.php(567): Revolt\EventLoop\Internal\AbstractDriver->invokeMicrotasks()
#5 [internal function]: Revolt\EventLoop\Internal\AbstractDriver->{closure:Revolt\EventLoop\Internal\AbstractDriver::createCallbackFiber():565}()
#6 /apis/vendor/revolt/event-loop/src/EventLoop/Internal/DriverSuspension.php(64): Fiber->resume()
#7 /apis/vendor/revolt/event-loop/src/EventLoop/Internal/AbstractDriver.php(430): Revolt\EventLoop\Internal\DriverSuspension::{closure:Revolt\EventLoop\Internal\DriverSuspension::resume():61}()
#8 /apis/vendor/revolt/event-loop/src/EventLoop/Internal/AbstractDriver.php(621): Revolt\EventLoop\Internal\AbstractDriver->invokeMicrotasks()
#9 [internal function]: Revolt\EventLoop\Internal\AbstractDriver->{closure:Revolt\EventLoop\Internal\AbstractDriver::createCallbackFiber():565}()
#10 /apis/vendor/revolt/event-loop/src/EventLoop/Internal/AbstractDriver.php(502): Fiber->resume()
#11 /apis/vendor/revolt/event-loop/src/EventLoop/Internal/AbstractDriver.php(558): Revolt\EventLoop\Internal\AbstractDriver->invokeCallbacks()
#12 [internal function]: Revolt\EventLoop\Internal\AbstractDriver->{closure:Revolt\EventLoop\Internal\AbstractDriver::createLoopFiber():538}()
#13 /apis/vendor/revolt/event-loop/src/EventLoop/Internal/AbstractDriver.php(96): Fiber->resume()
#14 /apis/vendor/revolt/event-loop/src/EventLoop/Internal/DriverSuspension.php(117): Revolt\EventLoop\Internal\AbstractDriver->{closure:Revolt\EventLoop\Internal\AbstractDriver::__construct():90}()
#15 /apis/vendor/amphp/amp/src/Internal/FutureIterator.php(133): Revolt\EventLoop\Internal\DriverSuspension->suspend()
#16 /apis/vendor/amphp/amp/src/Future.php(59): Amp\Internal\FutureIterator->consume()
#17 /apis/vendor/vimeo/psalm/src/Psalm/Internal/Codebase/Analyzer.php(326): Amp\Future::iterate()
#18 /apis/vendor/vimeo/psalm/src/Psalm/Internal/Codebase/Analyzer.php(246): Psalm\Internal\Codebase\Analyzer->doAnalysis()
#19 /apis/vendor/vimeo/psalm/src/Psalm/Internal/Analyzer/ProjectAnalyzer.php(472): Psalm\Internal\Codebase\Analyzer->analyzeFiles()
#20 /apis/vendor/vimeo/psalm/src/Psalm/Internal/Cli/Psalm.php(400): Psalm\Internal\Analyzer\ProjectAnalyzer->check()
#21 /apis/vendor/vimeo/psalm/psalm(9): Psalm\Internal\Cli\Psalm::run()
#22 /apis/vendor/bin/psalm(119): include('/apis/vendor/vi...')
#23 {main}

Next Revolt\EventLoop\UncaughtThrowable: Uncaught Amp\Parallel\Context\ContextException thrown in event loop callback Amp\Parallel\Worker\Internal\ContextWorker::{closure:Amp\Parallel\Worker\Internal\ContextWorker::receive():116} defined in /apis/vendor/amphp/parallel/src/Worker/Internal/ContextWorker.php:116; use Revolt\EventLoop::setErrorHandler() to gracefully handle such exceptions: Worker exited due to signal 9! in /apis/vendor/revolt/event-loop/src/EventLoop/UncaughtThrowable.php:13
Stack trace:
#0 /apis/vendor/revolt/event-loop/src/EventLoop/Internal/AbstractDriver.php(405): Revolt\EventLoop\UncaughtThrowable::throwingCallback()
#1 /apis/vendor/revolt/event-loop/src/EventLoop/Internal/DriverSuspension.php(127): Revolt\EventLoop\Internal\AbstractDriver::{closure:Revolt\EventLoop\Internal\AbstractDriver::error():403}()
#2 /apis/vendor/amphp/amp/src/Internal/FutureIterator.php(133): Revolt\EventLoop\Internal\DriverSuspension->suspend()
#3 /apis/vendor/amphp/amp/src/Future.php(59): Amp\Internal\FutureIterator->consume()
#4 /apis/vendor/vimeo/psalm/src/Psalm/Internal/Codebase/Analyzer.php(326): Amp\Future::iterate()
#5 /apis/vendor/vimeo/psalm/src/Psalm/Internal/Codebase/Analyzer.php(246): Psalm\Internal\Codebase\Analyzer->doAnalysis()
#6 /apis/vendor/vimeo/psalm/src/Psalm/Internal/Analyzer/ProjectAnalyzer.php(472): Psalm\Internal\Codebase\Analyzer->analyzeFiles()
#7 /apis/vendor/vimeo/psalm/src/Psalm/Internal/Cli/Psalm.php(400): Psalm\Internal\Analyzer\ProjectAnalyzer->check()
#8 /apis/vendor/vimeo/psalm/psalm(9): Psalm\Internal\Cli\Psalm::run()
#9 /apis/vendor/bin/psalm(119): include('/apis/vendor/vi...')
#10 {main}
(Psalm 6.12.0@cf420941d061a57050b6c468ef2c778faf40aee2 crashed due to an uncaught Throwable)
PHP Fatal error:  Uncaught Amp\Parallel\Context\ContextException: Worker exited due to signal 9! in /apis/vendor/vimeo/psalm/src/Psalm/Internal/Fork/ForkContext.php:239
Stack trace:
#0 /apis/vendor/vimeo/psalm/src/Psalm/Internal/Fork/ForkContext.php(250): Psalm\Internal\Fork\ForkContext->checkExit()
#1 /apis/vendor/vimeo/psalm/src/Psalm/Internal/Fork/ForkContext.php(196): Psalm\Internal\Fork\ForkContext->close()
#2 [internal function]: Psalm\Internal\Fork\ForkContext->__destruct()
#3 {main}
  thrown in /apis/vendor/vimeo/psalm/src/Psalm/Internal/Fork/ForkContext.php on line 239
Fatal error: Uncaught Amp\Parallel\Context\ContextException: Worker exited due to signal 9! in /apis/vendor/vimeo/psalm/src/Psalm/Internal/Fork/ForkContext.php:239
Stack trace:
#0 /apis/vendor/vimeo/psalm/src/Psalm/Internal/Fork/ForkContext.php(250): Psalm\Internal\Fork\ForkContext->checkExit()
#1 /apis/vendor/vimeo/psalm/src/Psalm/Internal/Fork/ForkContext.php(196): Psalm\Internal\Fork\ForkContext->close()
#2 [internal function]: Psalm\Internal\Fork\ForkContext->__destruct()
#3 {main}
  thrown in /apis/vendor/vimeo/psalm/src/Psalm/Internal/Fork/ForkContext.php on line 239

Where Processing ... is taking, there ... are my project files

When I run the command using --threads=1, everything is fine. I see a problem in parallel run

[danog]

Setting arrayCache="false" should reduce memory usage and fix the OOMs