NotSerializableException in timeout step

[balakine]

Jenkins and plugins versions report

Environment

Jenkins: 2.541.3
OS: Linux - 6.6.87.2-microsoft-standard-WSL2
Java: 21.0.9 - Eclipse Adoptium (OpenJDK 64-Bit Server VM)
---
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apache-httpcomponents-client-4-api:4.5.14-269.vfa_2321039a_83
apache-httpcomponents-client-5-api:5.6-193.vf028a_770a_fa_c
asm-api:9.9.1-189.vb_5ef2964da_91
authentication-tokens:1.144.v5ff4a_5ec5c33
aws-credentials:254.v978a_5e206a_d7
aws-java-sdk-ec2:1.12.780-480.v4a_0819121a_9e
aws-java-sdk-minimal:1.12.780-480.v4a_0819121a_9e
aws-java-sdk2-core:2.42.33-70.vd69c0763fa_60
aws-java-sdk2-ec2:2.42.33-70.vd69c0763fa_60
badge:3.591.v9074c6c6f0b_9
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bootstrap5-api:5.3.8-895.v4d0d8e47fea_d
bouncycastle-api:2.30.1.84-291.v9f17b_21896e2
branch-api:2.1280.v0d4e5b_b_460ef
built-on-column:1.5
caffeine-api:3.2.3-194.v31a_b_f7a_b_5a_81
checks-api:402.vca_263b_f200e3
cloud-stats:377.vd8a_6c953e98e
cloudbees-folder:6.1098.vb_9a_23a_b_c566a_
cloudbees-jenkins-advisor:392.v6ca_b_ff4e12fa_
command-launcher:134.v025a_5fcf9dea_
commons-compress-api:1.28.0-3
commons-lang3-api:3.20.0-109.ve43756e2d2b_4
commons-text-api:1.15.0-218.va_61573470393
conditional-buildstep:1.5.0
config-file-provider:1006.vc7366c201f57
copyartifact:795.ve8e151429b_27
credentials:1502.v5c95e620ddfe
credentials-binding:719.v80e905ef14eb_
dark-theme:652.vea_da_dfea_e769
data-tables-api:2.3.7-1534.v539d4edf109d
display-url-api:2.217.va_6b_de84cc74b_
docker-commons:472.vee120e23d3a_c
docker-java-api:3.7.1-136.v5d70f77a_c3d6
docker-plugin:1316.v75635a_002b_0a_
docker-swarm:1.11
docker-workflow:634.vedc7242b_eda_7
dtkit-api:3.0.3
durable-task:664.v2b_e7a_dfff66c
ec2:2049.v127f0f109c29
echarts-api:6.0.0-1247.vf3e35a_c1813f
eddsa-api:0.3.0.1-29.v67e9a_1c969b_b_
email-ext:1933.v45cec755423f
emoji-symbols-api:17.0-57.v8d44b_9a_b_d5ea_
envinject:2.934.vc674e76cf954
envinject-api:1.237.v82803a_511906
extended-choice-parameter:388.ve7b_d0b_920e10
flatpickr-api:4.6.13-32.v60a_51029c136
font-awesome-api:7.2.0-965.ve3840b_696418
gerrit-code-review:0.5.0
gerrit-trigger:3.1971.v217d381e3a_5a_
git:5.10.1
git-client:6.6.0
github:1.46.0
github-api:1.330-492.v3941a_032db_2a_
github-branch-source:1967.vdea_d580c1a_b_a_
gson-api:2.13.2-198.v45e4a_55d9b_a_a_
instance-identity:203.v15e81a_1b_7a_38
ionicons-api:94.vcc3065403257
jackson2-api:2.21.2-433.v6d50b_92cfe52
jackson3-api:3.1.2-71.v0a_23916945fe
jakarta-activation-api:2.1.4-1
jakarta-mail-api:2.1.5-1
jakarta-xml-bind-api:4.0.6-12.vb_1833c1231d3
javadoc:354.vee1a_660b_4990
javax-activation-api:1.2.0-8
javax-mail-api:1.6.2-11
jaxb:2.3.9-143.v5979df3304e6
jdk-tool:83.v417146707a_3d
jenkins-multijob-plugin:662.vd2e0001f6b_b_d
jjwt-api:0.11.5-120.v0268cf544b_89
joda-time-api:2.14.1-187.vdf2def02b_8a_1
jquery:1.12.4-3
jquery3-api:3.7.1-619.vdb_10e002501a_
jsch:0.2.16-95.v3eecb_55fa_b_78
json-api:20251224-185.v0cc18490c62c
json-path-api:3.0.0-218.vcd4dd1355de2
jsoup:1.22.1-76.v9cdb_2456c0e3
junit:1403.vd9d1413fd205
kubernetes:4423.vb_59f230b_ce53
kubernetes-client-api:7.3.1-256.v788a_0b_787114
kubernetes-credentials:207.v492f58828b_ed
lockable-resources:1493.v0db_447235039
mailer:534.v1b_36f5864073
matrix-project:870.v9db_fcfc2f45b_
maven-plugin:3.27
metrics:4.2.37-494.v06f9a_939d33a_
mina-sshd-api-common:2.16.0-167.va_269f38cc024
mina-sshd-api-core:2.16.0-167.va_269f38cc024
mina-sshd-api-scp:2.16.0-167.va_269f38cc024
node-iterator-api:72.vc90e81737df1
nodejs:1.6.6
okhttp-api:5.3.2-200.vedb_720a_cf1f8
oss-symbols-api:442.v99039087229b_
parameterized-scheduler:379.v95c73f233a_df
parameterized-trigger:890.vc240a_a_e1217f
pipeline-build-step:584.vdb_a_2cc3a_d07a_
pipeline-github-lib:65.v203688e7727e
pipeline-graph-analysis:254.v0f63a_a_447dca_
pipeline-graph-view:819.ved496c19e082
pipeline-groovy-lib:787.ve2fef0efdca_6
pipeline-input-step:551.vdff487c5998c
pipeline-milestone-step:152.v6e22b_8cfc66c
pipeline-model-api:2.2277.v00573e73ddf1
pipeline-model-definition:2.2277.v00573e73ddf1
pipeline-model-extensions:2.2277.v00573e73ddf1
pipeline-rest-api:2.40
pipeline-stage-step:345.va_96187909426
pipeline-stage-tags-metadata:2.2277.v00573e73ddf1
pipeline-stage-view:2.40
pipeline-utility-steps:2.20.0
plain-credentials:199.v9f8e1f741799
plugin-util-api:6.1192.v30fe6e2837ff
prism-api:1.30.0-717.vb_f8360844b_53
rebuild:338.va_0a_b_50e29397
resource-disposer:0.25
robot:6.2.0
role-strategy:848.va_a_ea_673cf0b_c
run-condition:276.v97298f3a_cd51
scm-api:728.vc30dcf7a_0df5
script-security:1399.ve6a_66547f6e1
snakeyaml-api:2.5-149.v72471e9c6371
snakeyaml-engine-api:3.0.1-5.vd98ea_ff3b_92e
ssh-credentials:372.va_250881b_08cd
ssh-slaves:3.1097.v868116049892
sshd:3.384.vc89b_5e138cf9
structs:362.va_b_695ef4fdf9
support-core:1801.v76b_389d2deec
theme-manager:346.v06cca_64c6a_37
throttle-concurrents:625.vc8b_e469e9a_b_c
timestamper:1.30
token-macro:477.vd4f0dc3cb_cf1
trilead-api:2.284.v1974ea_324382
uno-choice:2.8.9
variant:70.va_d9f17f859e0
versionnumber:234.v315d3b_3cb_fb_5
woodstox-core-api:7.1.1-1.v4d297985f397
workflow-aggregator:608.v67378e9d3db_1
workflow-api:1413.v2ff1a_5e720fa_
workflow-basic-steps:1098.v808b_fd7f8cf4
workflow-cps:4275.vb_0565eb_a_3d36
workflow-durable-task-step:1475.ved562f6ec8b_3
workflow-job:1571.vb_423c255d6d9
workflow-multibranch:821.vc3b_4ea_780798
workflow-scm-step:466.va_d69e602552b_
workflow-step-api:724.v538c2362b_dfb_
workflow-support:1015.v785e5a_b_b_8b_22
ws-cleanup:0.49
xray-connector:2.6.2
xunit:3.1.6

What Operating System are you using (both controller, and any agents involved in the problem)?

OS: Linux - 6.6.87.2-microsoft-standard-WSL2

Reproduction steps

Here is the entire pipeline:

def foo
timeout(1) { foo.each{} }

Pipeline Speed / Durability setting should be the default "None: use pipeline default (Maximum survivability/durability but slowest)".

Expected Results

I would expect the pipeline to complete successfully

Actual Results

Started by user admin
 Replayed #5
 [Pipeline] Start of Pipeline
 [Pipeline] timeout
 Timeout set to expire in 1 min 0 sec
 [Pipeline] {
 [Pipeline] }
 [Pipeline] // timeout
 [Pipeline] End of Pipeline
 an exception which occurred:
 	in field com.cloudbees.groovy.cps.Outcome.normal
 	in object normal[null]
 	in field org.jenkinsci.plugins.workflow.cps.CpsBodyExecution.outcome
 	in object org.jenkinsci.plugins.workflow.cps.CpsBodyExecution@206314e7
 	in field org.jenkinsci.plugins.workflow.steps.TimeoutStepExecution.body
 	in object org.jenkinsci.plugins.workflow.steps.TimeoutStepExecution@78eb13ca
 	in field org.jenkinsci.plugins.workflow.cps.CpsThread.step
 	in object Thread #0 @56c7c1fc
 	in field org.jenkinsci.plugins.workflow.cps.CpsThreadGroup.threads
 	in object org.jenkinsci.plugins.workflow.cps.CpsThreadGroup@1f0a2cf7
 	in object org.jenkinsci.plugins.workflow.cps.CpsThreadGroup@1f0a2cf7
 Also:   org.jenkinsci.plugins.workflow.actions.ErrorAction$ErrorId: ae75b521-798a-4ed5-a21c-48e20dba3275
 Caused: java.io.NotSerializableException: org.codehaus.groovy.runtime.NullObject
 	at PluginClassLoader for workflow-support//org.jboss.marshalling.river.RiverMarshaller.doWriteObject(RiverMarshaller.java:278)
 	at PluginClassLoader for workflow-support//org.jboss.marshalling.river.RiverMarshaller.doWriteFields(RiverMarshaller.java:1182)
 	at PluginClassLoader for workflow-support//org.jboss.marshalling.river.RiverMarshaller.doWriteSerializableObject(RiverMarshaller.java:1140)
 	at PluginClassLoader for workflow-support//org.jboss.marshalling.river.RiverMarshaller.doWriteObject(RiverMarshaller.java:271)
 	at PluginClassLoader for workflow-support//org.jboss.marshalling.river.RiverMarshaller.doWriteFields(RiverMarshaller.java:1182)
 	at PluginClassLoader for workflow-support//org.jboss.marshalling.river.RiverMarshaller.doWriteSerializableObject(RiverMarshaller.java:1140)
 	at PluginClassLoader for workflow-support//org.jboss.marshalling.river.RiverMarshaller.doWriteObject(RiverMarshaller.java:271)
 	at PluginClassLoader for workflow-support//org.jboss.marshalling.river.RiverMarshaller.doWriteFields(RiverMarshaller.java:1182)
 	at PluginClassLoader for workflow-support//org.jboss.marshalling.river.RiverMarshaller.doWriteSerializableObject(RiverMarshaller.java:1140)
 	at PluginClassLoader for workflow-support//org.jboss.marshalling.river.RiverMarshaller.doWriteObject(RiverMarshaller.java:271)
 	at PluginClassLoader for workflow-support//org.jboss.marshalling.river.RiverMarshaller.doWriteFields(RiverMarshaller.java:1182)
 	at PluginClassLoader for workflow-support//org.jboss.marshalling.river.RiverMarshaller.doWriteSerializableObject(RiverMarshaller.java:1140)
 	at PluginClassLoader for workflow-support//org.jboss.marshalling.river.RiverMarshaller.doWriteObject(RiverMarshaller.java:271)
 	at PluginClassLoader for workflow-support//org.jboss.marshalling.river.BlockMarshaller.doWriteObject(BlockMarshaller.java:65)
 	at PluginClassLoader for workflow-support//org.jboss.marshalling.river.BlockMarshaller.writeObject(BlockMarshaller.java:56)
 	at PluginClassLoader for workflow-support//org.jboss.marshalling.MarshallerObjectOutputStream.writeObjectOverride(MarshallerObjectOutputStream.java:50)
 	at PluginClassLoader for workflow-support//org.jboss.marshalling.river.RiverObjectOutputStream.writeObjectOverride(RiverObjectOutputStream.java:179)
 	at java.base/java.io.ObjectOutputStream.writeObject(Unknown Source)
 	at java.base/java.util.HashMap.internalWriteEntries(Unknown Source)
 	at java.base/java.util.HashMap.writeObject(Unknown Source)
 	at PluginClassLoader for workflow-support//org.jboss.marshalling.reflect.SerMethods.callWriteObject(SerMethods.java:69)
 	at PluginClassLoader for workflow-support//org.jboss.marshalling.reflect.SerializableClass.callWriteObject(SerializableClass.java:231)
 	at PluginClassLoader for workflow-support//org.jboss.marshalling.river.RiverMarshaller.doWriteSerializableObject(RiverMarshaller.java:1128)
 	at PluginClassLoader for workflow-support//org.jboss.marshalling.river.RiverMarshaller.doWriteObject(RiverMarshaller.java:271)
 	at PluginClassLoader for workflow-support//org.jboss.marshalling.river.RiverMarshaller.doWriteFields(RiverMarshaller.java:1182)
 	at PluginClassLoader for workflow-support//org.jboss.marshalling.river.RiverMarshaller.doWriteSerializableObject(RiverMarshaller.java:1140)
 	at PluginClassLoader for workflow-support//org.jboss.marshalling.river.RiverMarshaller.doWriteObject(RiverMarshaller.java:271)
 	at PluginClassLoader for workflow-support//org.jboss.marshalling.AbstractObjectOutput.writeObject(AbstractObjectOutput.java:58)
 	at PluginClassLoader for workflow-support//org.jboss.marshalling.AbstractMarshaller.writeObject(AbstractMarshaller.java:116)
 	at PluginClassLoader for workflow-support//org.jenkinsci.plugins.workflow.support.pickles.serialization.RiverWriter.lambda$writeObject$1(RiverWriter.java:147)
 	at PluginClassLoader for script-security//org.jenkinsci.plugins.scriptsecurity.sandbox.groovy.GroovySandbox.runInSandbox(GroovySandbox.java:329)
 	at PluginClassLoader for workflow-support//org.jenkinsci.plugins.workflow.support.pickles.serialization.RiverWriter.writeObject(RiverWriter.java:146)
 	at PluginClassLoader for workflow-cps//org.jenkinsci.plugins.workflow.cps.CpsThreadGroup.saveProgram(CpsThreadGroup.java:639)
 	at PluginClassLoader for workflow-cps//org.jenkinsci.plugins.workflow.cps.CpsThreadGroup.saveProgram(CpsThreadGroup.java:613)
 	at PluginClassLoader for workflow-cps//org.jenkinsci.plugins.workflow.cps.CpsThreadGroup.saveProgramIfPossible(CpsThreadGroup.java:596)
 	at PluginClassLoader for workflow-cps//org.jenkinsci.plugins.workflow.cps.CpsThreadGroup.run(CpsThreadGroup.java:520)
 	at PluginClassLoader for workflow-cps//org.jenkinsci.plugins.workflow.cps.CpsThreadGroup$2.call(CpsThreadGroup.java:372)
 	at PluginClassLoader for workflow-cps//org.jenkinsci.plugins.workflow.cps.CpsThreadGroup$2.call(CpsThreadGroup.java:302)
 	at PluginClassLoader for workflow-cps//org.jenkinsci.plugins.workflow.cps.CpsVmExecutorService.lambda$wrap$4(CpsVmExecutorService.java:143)
 	at java.base/java.util.concurrent.FutureTask.run(Unknown Source)
 	at hudson.remoting.SingleLaneExecutorService$1.run(SingleLaneExecutorService.java:139)
 	at jenkins.util.ContextResettingExecutorService$1.run(ContextResettingExecutorService.java:28)
 	at jenkins.security.ImpersonatingExecutorService$1.run(ImpersonatingExecutorService.java:68)
 	at jenkins.util.ErrorLoggingExecutorService.lambda$wrap$0(ErrorLoggingExecutorService.java:51)
 	at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
 	at java.base/java.util.concurrent.FutureTask.run(Unknown Source)
 	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
 	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
 	at PluginClassLoader for workflow-cps//org.jenkinsci.plugins.workflow.cps.CpsVmExecutorService$1.call(CpsVmExecutorService.java:53)
 	at PluginClassLoader for workflow-cps//org.jenkinsci.plugins.workflow.cps.CpsVmExecutorService$1.call(CpsVmExecutorService.java:50)
 	at org.codehaus.groovy.runtime.GroovyCategorySupport$ThreadCategoryInfo.use(GroovyCategorySupport.java:136)
 	at org.codehaus.groovy.runtime.GroovyCategorySupport.use(GroovyCategorySupport.java:275)
 	at PluginClassLoader for workflow-cps//org.jenkinsci.plugins.workflow.cps.CpsVmExecutorService.lambda$categoryThreadFactory$0(CpsVmExecutorService.java:50)
 	at java.base/java.lang.Thread.run(Unknown Source)
 Finished: FAILURE

Anything else?

Seems to be limited to the timeout step, for example retry doesn't fail:

def foo
retry(1) { foo.each{} }

Adding a statement after foo.each{} also solves the problem

def foo
timeout(1) {
  foo.each{}
  null
}

Or initializing foo

def foo = []
timeout(1) { foo.each{} }

Are you interested in contributing a fix?

No response