incorrect outofmemory death

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#21,543 opened on Mar 22, 2026 3 comments 0 reactions 0 assignees View on GitHub

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Assessment

Difficulty: 3/5
Estimated time: 1-2 days
Newbie friendliness: 48/100

Issue type: Bug
Clarity: Mostly clear
Activity status: Quiet
Tech stack: java
Domain: cli, devtools

Research direction

Reproduce the reported CodeQL query command with --ram 10240 and capture the memory-related output. Trace how the CLI passes --ram to query evaluation and how the Java heap maximum is selected. Done when the discrepancy is explained and the error reports the relevant configured limit or the behavior is corrected.

Written by the indexing model from the issue text.

Description

I run a query like this:

../../sources/codeql/codeql query run ./queries/types-flow.ql -d ../../sources/linux-6.12.74/linux-db/ -j0 --ram 10240 > ./results/types-flow.txt

I get

types-flow.ql: [1/1 eval 4m37s] Failed: Query evaluation ran out of Java heap (Java heap maximum: 2070 MiB).
(eventual cause: OutOfMemoryError "Java heap space")
CodeQL is out of memory. Try increasing the memory available to CodeQL using the --ram option.
make: *** [Makefile:44: types-flow] Error 99

Clearly I passed 10GB to --ram, why does the error message say that the java heap maximum is 2GB?

Dominant language: CodeQL
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