Closed
Bug 979254
Opened 11 years ago
Closed 9 years ago
TSan: data race js/src/jit/JitOptions.cpp:147 js::jit::JitOptions::resetUsesBeforeCompile()
Categories
(Core :: JavaScript Engine, defect)
Tracking
()
RESOLVED
INCOMPLETE
People
(Reporter: decoder, Unassigned)
References
(Blocks 1 open bug)
Details
(Whiteboard: [tsan])
Attachments
(1 file)
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31.67 KB,
text/plain
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Details |
The attached logfile shows a thread/data race (mozilla-central revision 626d99c084cb) detected by TSan (ThreadSanitizer).
Typically, races reported by TSan are not false positives, but it is possible that the race is benign. Even in this case though, we should try to come up with a fix unless this would cause inacceptable performance issues. Also note that seemingly benign races can possibly be harmful (also depending on the compiler and the architecture) [1].
If the bug cannot be fixed, then this bug should be used to either make a compile-time annotation for blacklisting or add an entry to the runtime blacklist.
[1] http://software.intel.com/en-us/blogs/2013/01/06/benign-data-races-what-could-possibly-go-wrong
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Comment 1•9 years ago
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Haven't seen this one recently; please file a new bug if it turns up again.
Status: NEW → RESOLVED
Closed: 9 years ago
Resolution: --- → INCOMPLETE
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Description
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