https://bz.apache.org/bugzilla/show_bug.cgi?id=58383
Bug ID: 58383
Summary: Data race inside non-thread-safe HashMap
org.apache.catalina.tribes.transport.SenderState.membe
rStates
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 read in thread T48 (locks held: {})
----> at
org.apache.catalina.tribes.transport.SenderState.getSenderState(SenderState.java:45)
at
org.apache.catalina.tribes.transport.SenderState.getSenderState(SenderState.java:41)
at
org.apache.catalina.tribes.group.ChannelCoordinator.memberAdded(ChannelCoordinator.java:244)
at
org.apache.catalina.tribes.membership.McastService.memberAdded(McastService.java:461)
at
org.apache.catalina.tribes.membership.McastServiceImpl$2.run(McastServiceImpl.java:397)
T48 is created by T38
at
java.util.concurrent.ThreadPoolExecutor.addWorker(ThreadPoolExecutor.java:1010)
Concurrent write in thread T57 (locks held: {Monitor@552f7995})
----> at
org.apache.catalina.tribes.transport.SenderState.getSenderState(SenderState.java:51)
- locked Monitor@552f7995 at
org.apache.catalina.tribes.transport.SenderState.getSenderState(SenderState.java:47)
at
org.apache.catalina.tribes.transport.SenderState.getSenderState(SenderState.java:41)
at
org.apache.catalina.tribes.group.ChannelCoordinator.memberAdded(ChannelCoordinator.java:244)
at
org.apache.catalina.tribes.membership.McastService.memberAdded(McastService.java:461)
at
org.apache.catalina.tribes.membership.McastServiceImpl$2.run(McastServiceImpl.java:397)
T57 is created by T40
at
java.util.concurrent.ThreadPoolExecutor.addWorker(ThreadPoolExecutor.java:1010)
}}}
Data race on field java.util.HashMap.$state: {{{
Concurrent read in thread T189 (locks held: {})
----> at
org.apache.catalina.tribes.transport.SenderState.getSenderState(SenderState.java:45)
at
org.apache.catalina.tribes.transport.SenderState.getSenderState(SenderState.java:41)
at
org.apache.catalina.tribes.group.ChannelCoordinator.memberAdded(ChannelCoordinator.java:244)
at
org.apache.catalina.tribes.membership.McastService.memberAdded(McastService.java:461)
at
org.apache.catalina.tribes.membership.McastServiceImpl$2.run(McastServiceImpl.java:397)
T189 is created by T185
at
java.util.concurrent.ThreadPoolExecutor.addWorker(ThreadPoolExecutor.java:1010)
Concurrent write in thread T188 (locks held: {Monitor@552f7995})
----> at
org.apache.catalina.tribes.transport.SenderState.removeSenderState(SenderState.java:60)
- locked Monitor@552f7995 at
org.apache.catalina.tribes.transport.SenderState.removeSenderState(SenderState.java:59)
at
org.apache.catalina.tribes.group.ChannelCoordinator.memberDisappeared(ChannelCoordinator.java:250)
at
org.apache.catalina.tribes.membership.McastService.memberDisappeared(McastService.java:471)
at
org.apache.catalina.tribes.membership.McastServiceImpl$4.run(McastServiceImpl.java:467)
T188 is created by T168
at
java.util.concurrent.ThreadPoolExecutor.addWorker(ThreadPoolExecutor.java:1010)
}}}
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