https://bz.apache.org/bugzilla/show_bug.cgi?id=58382
Bug ID: 58382
Summary: Data race inside non-thread-safe HashMap
org.apache.catalina.tribes.membership.Membership.map
Product: Tomcat 8
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P2
Component: Catalina
Assignee: [email protected]
Reporter: [email protected]
Reported by RV-Predict (a dynamic race detector) when running the test suite:
Data race on field java.util.HashMap.$state: {{{
Concurrent write in thread T189 (locks held: {})
----> at
org.apache.catalina.tribes.membership.Membership.removeMember(Membership.java:167)
at
org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator.memberDisappeared(NonBlockingCoordinator.java:525)
at
org.apache.catalina.tribes.group.ChannelInterceptorBase.memberDisappeared(ChannelInterceptorBase.java:93)
at
org.apache.catalina.tribes.group.interceptors.TcpFailureDetector.memberDisappeared(TcpFailureDetector.java:176)
at
org.apache.catalina.tribes.group.ChannelInterceptorBase.memberDisappeared(ChannelInterceptorBase.java:93)
at
org.apache.catalina.tribes.group.interceptors.DomainFilterInterceptor.memberDisappeared(DomainFilterInterceptor.java:79)
at
org.apache.catalina.tribes.group.ChannelInterceptorBase.memberDisappeared(ChannelInterceptorBase.java:93)
at
org.apache.catalina.tribes.group.ChannelCoordinator.memberDisappeared(ChannelCoordinator.java:251)
at
org.apache.catalina.tribes.membership.McastService.memberDisappeared(McastService.java:471)
at
org.apache.catalina.tribes.membership.McastServiceImpl$1.run(McastServiceImpl.java:383)
T189 is created by T185
at
java.util.concurrent.ThreadPoolExecutor.addWorker(ThreadPoolExecutor.java:1010)
Concurrent read in thread T1 (locks held: {Monitor@2b72a0b3,
Monitor@16307bd4, Monitor@22551e94})
----> at
org.apache.catalina.tribes.membership.Membership.reset(Membership.java:106)
- locked Monitor@22551e94 at
org.apache.catalina.tribes.membership.Membership.reset(Membership.java:n/a)
at
org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator.stop(NonBlockingCoordinator.java:472)
- locked Monitor@16307bd4 at
org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator.stop(NonBlockingCoordinator.java:463)
at
org.apache.catalina.tribes.group.ChannelInterceptorBase.stop(ChannelInterceptorBase.java:171)
at
org.apache.catalina.tribes.group.GroupChannel.stop(GroupChannel.java:444)
- locked Monitor@2b72a0b3 at
org.apache.catalina.tribes.group.GroupChannel.stop(GroupChannel.java:n/a)
at
org.apache.catalina.tribes.group.interceptors.TestNonBlockingCoordinator.tearDown(TestNonBlockingCoordinator.java:127)
at
org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
at
org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at
org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
at
org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:33)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
at
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
at junit.framework.JUnit4TestAdapter.run(JUnit4TestAdapter.java:38)
at
org.apache.tools.ant.taskdefs.optional.junit.JUnitTestRunner.run(JUnitTestRunner.java:535)
at
org.apache.tools.ant.taskdefs.optional.junit.JUnitTestRunner.launch(JUnitTestRunner.java:1182)
at
org.apache.tools.ant.taskdefs.optional.junit.JUnitTestRunner.main(JUnitTestRunner.java:1033)
T1 is the main thread
}}}
Data race on field java.util.HashMap.$state: {{{
Concurrent write in thread T53 (locks held: {})
----> at
org.apache.catalina.tribes.membership.Membership.removeMember(Membership.java:167)
at
org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator.memberDisappeared(NonBlockingCoordinator.java:525)
at
org.apache.catalina.tribes.group.ChannelInterceptorBase.memberDisappeared(ChannelInterceptorBase.java:93)
at
org.apache.catalina.tribes.group.interceptors.TcpFailureDetector.memberDisappeared(TcpFailureDetector.java:176)
at
org.apache.catalina.tribes.group.ChannelInterceptorBase.memberDisappeared(ChannelInterceptorBase.java:93)
at
org.apache.catalina.tribes.group.interceptors.DomainFilterInterceptor.memberDisappeared(DomainFilterInterceptor.java:79)
at
org.apache.catalina.tribes.group.ChannelInterceptorBase.memberDisappeared(ChannelInterceptorBase.java:93)
at
org.apache.catalina.tribes.group.ChannelCoordinator.memberDisappeared(ChannelCoordinator.java:251)
at
org.apache.catalina.tribes.membership.McastService.memberDisappeared(McastService.java:471)
at
org.apache.catalina.tribes.membership.McastServiceImpl$1.run(McastServiceImpl.java:383)
T53 is created by T32
at
java.util.concurrent.ThreadPoolExecutor.addWorker(ThreadPoolExecutor.java:1010)
Concurrent read in thread T55 (locks held: {})
----> at
org.apache.catalina.tribes.membership.Membership.removeMember(Membership.java:167)
at
org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator.memberDisappeared(NonBlockingCoordinator.java:525)
at
org.apache.catalina.tribes.group.ChannelInterceptorBase.memberDisappeared(ChannelInterceptorBase.java:93)
at
org.apache.catalina.tribes.group.interceptors.TcpFailureDetector.memberDisappeared(TcpFailureDetector.java:176)
at
org.apache.catalina.tribes.group.ChannelInterceptorBase.memberDisappeared(ChannelInterceptorBase.java:93)
at
org.apache.catalina.tribes.group.interceptors.DomainFilterInterceptor.memberDisappeared(DomainFilterInterceptor.java:79)
at
org.apache.catalina.tribes.group.ChannelInterceptorBase.memberDisappeared(ChannelInterceptorBase.java:93)
at
org.apache.catalina.tribes.group.ChannelCoordinator.memberDisappeared(ChannelCoordinator.java:251)
at
org.apache.catalina.tribes.membership.McastService.memberDisappeared(McastService.java:471)
at
org.apache.catalina.tribes.membership.McastServiceImpl$1.run(McastServiceImpl.java:383)
T55 is created by T32
at
java.util.concurrent.ThreadPoolExecutor.addWorker(ThreadPoolExecutor.java:1010)
}}}
Data race on field java.util.HashMap.$state: {{{
Concurrent read in thread T250 (locks held: {Monitor@2c4e42fe,
Monitor@ebeabe7})
----> at
org.apache.catalina.tribes.membership.Membership.expire(Membership.java:200)
- locked Monitor@ebeabe7 at
org.apache.catalina.tribes.membership.Membership.expire(Membership.java:n/a)
at
org.apache.catalina.tribes.membership.McastServiceImpl.checkExpired(McastServiceImpl.java:455)
- locked Monitor@2c4e42fe at
org.apache.catalina.tribes.membership.McastServiceImpl.checkExpired(McastServiceImpl.java:454)
at
org.apache.catalina.tribes.membership.McastServiceImpl.send(McastServiceImpl.java:512)
at
org.apache.catalina.tribes.membership.McastServiceImpl.send(McastServiceImpl.java:487)
at
org.apache.catalina.tribes.membership.McastServiceImpl$SenderThread.run(McastServiceImpl.java:575)
T250 is created by T165
at
org.apache.catalina.tribes.membership.McastServiceImpl.start(McastServiceImpl.java:280)
Concurrent write in thread T185 (locks held: {})
----> at
org.apache.catalina.tribes.membership.Membership.removeMember(Membership.java:167)
at
org.apache.catalina.tribes.membership.McastServiceImpl.memberDataReceived(McastServiceImpl.java:376)
at
org.apache.catalina.tribes.membership.McastServiceImpl.receive(McastServiceImpl.java:356)
at
org.apache.catalina.tribes.membership.McastServiceImpl$ReceiverThread.run(McastServiceImpl.java:541)
T185 is created by T165
at
org.apache.catalina.tribes.membership.McastServiceImpl.start(McastServiceImpl.java:269)
}}}
Data race on field java.util.HashMap.$state: {{{
Concurrent read in thread T250 (locks held: {Monitor@2c4e42fe,
Monitor@ebeabe7})
----> at
org.apache.catalina.tribes.membership.Membership.expire(Membership.java:201)
- locked Monitor@ebeabe7 at
org.apache.catalina.tribes.membership.Membership.expire(Membership.java:n/a)
at
org.apache.catalina.tribes.membership.McastServiceImpl.checkExpired(McastServiceImpl.java:455)
- locked Monitor@2c4e42fe at
org.apache.catalina.tribes.membership.McastServiceImpl.checkExpired(McastServiceImpl.java:454)
at
org.apache.catalina.tribes.membership.McastServiceImpl.send(McastServiceImpl.java:512)
at
org.apache.catalina.tribes.membership.McastServiceImpl.send(McastServiceImpl.java:487)
at
org.apache.catalina.tribes.membership.McastServiceImpl$SenderThread.run(McastServiceImpl.java:575)
T250 is created by T165
at
org.apache.catalina.tribes.membership.McastServiceImpl.start(McastServiceImpl.java:280)
Concurrent write in thread T185 (locks held: {})
----> at
org.apache.catalina.tribes.membership.Membership.removeMember(Membership.java:167)
at
org.apache.catalina.tribes.membership.McastServiceImpl.memberDataReceived(McastServiceImpl.java:376)
at
org.apache.catalina.tribes.membership.McastServiceImpl.receive(McastServiceImpl.java:356)
at
org.apache.catalina.tribes.membership.McastServiceImpl$ReceiverThread.run(McastServiceImpl.java:541)
T185 is created by T165
at
org.apache.catalina.tribes.membership.McastServiceImpl.start(McastServiceImpl.java:269)
}}}
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