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Details

Type: Bug
Resolution: Done
Priority: Major - P3
Fix Version/s: 2.0.5, 2.1.1
Affects Version/s: None
Component/s: Internal Client, Sharding
Labels:
None

Operating System:
ALL

Description

It's possible for a thread to notifyFailure(), resetting the _master variable to -1, between the time when the _master variable is checked here and when it is actually used to access the nodes array. We need to acquire _lock to do this safely.

There may be other issues here - the _check code modifies _master without locks in other places?

Attachments

Issue Links

duplicates

SERVER-5833 mongo crash

Closed

SERVER-6245 Assertion Error: bsonobjbuilder.h:127

Closed

is depended on by

SERVER-5302 Mongos Process Dying Signal 11

Closed

is duplicated by

SERVER-5166 Removing replica set node can cause mongos to use already freed _nodes entry

Closed

SERVER-7841 Segmentation faults and lost replicaset seed on rs.remove()

Closed

is related to

SERVER-5496 Refactor ReplicaSetMonitor to avoid duplicate work

Closed

related to

SERVER-5362 ReplicaSetMonitor::notifySlaveFailure not thread safe

Closed

SERVER-5392 Consider allowing only one thread to be responsible in modifying _nodes in ReplicaSetMonitor

Closed

(1 is related to, 2 related to)

Activity

People

Assignee:: Randolph Tan

Reporter:: Greg Studer

Participants:: auto, Greg Studer, Randolph Tan

Votes:: 0 Vote for this issue

Watchers:: 2 Start watching this issue

Dates

Created:: Feb 27 2012 03:14:18 PM UTC

Updated:: Jul 11 2016 06:32:59 PM UTC

Resolved:: Apr 03 2012 09:19:49 PM UTC