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Code Issues Releases Activity

SERVER-48595 Suppress WiredTiger in unit tests

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WiredTiger is known to cause false positives for data races because it
uses a nonstandard thread model that TSAN doesn't know how to deal with.
We have already blacklisted WiredTiger in TSAN, but that only affects
threads created within the WiredTiger source. For threads that call
*into* WiredTiger, we need to add suppressions so we still get any
potential failures from elsewhere.
This commit is contained in:
Ryan Egesdahl 2020-06-04 13:04:41 -07:00 committed by Evergreen Agent
parent a60cab586f
commit 6f8fa936c6
1 changed files with 14 additions and 0 deletions
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14
etc/tsan.suppressions
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@ -2,3 +2,17 @@
# parsed as JSON. Suppress those messages specifically.
signal:src/mongo/unittest/death_test.cpp
# WiredTiger is known to cause false positives for data races because it uses a
# nonstandard thread model that TSAN doesn't know how to deal with. We have
# already blacklisted WiredTiger in TSAN, but that only affects threads created
# within the WiredTiger source. For threads that call *into* WiredTiger, we
# need to add suppressions so we still get any potential failures from
# elsewhere.
#
# This is a temporary addition for now because it's possible that these are
# real positives that we need to do something with. However, because we know
# that false positives are more likely, we're deferring them until we have
# fixed the ones we know are real.
# TODO: https://jira.mongodb.org/browse/SERVER-48599
race:src/third_party/wiredtiger/*