Alexey Serbin has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/16657 )

Change subject: KUDU-3210 Add option to enforce FIPS approved mode
......................................................................


Patch Set 11: Code-Review+1

(1 comment)

Overall looks good, the only question left is about clearing errors which might 
left from a Kudu application that initialized openssl but didn't clear the 
error stack as needed (say, didn't do proper error handling of openssl errors).

http://gerrit.cloudera.org:8080/#/c/16657/11/src/kudu/security/openssl_util.cc
File src/kudu/security/openssl_util.cc:

http://gerrit.cloudera.org:8080/#/c/16657/11/src/kudu/security/openssl_util.cc@160
PS11, Line 160:   // In case the user's thread has left some error around, 
clear it.
              :   ERR_clear_error();
              :   SCOPED_OPENSSL_NO_PENDING_ERRORS;
I didn't notice that in the previous review round, but it seems the previous 
version of the code did this clean-up if the library was initialized 
externally.  If those errors are left on the OpenSSL's error stack, 
openssl_util might hit those with SCOPED_OPENSSL_NO_PENDING_ERRORS check even 
if those errors are irrelevant.

That was introduced here:

https://github.com/apache/kudu/commit/5f1ca4f3948a61b22946255e4ada895c77bc6adf#diff-c9f685fcd94c68485fe3abda7982e97f6b4ced85d48de9fc72b90aa2d72dd02dR87-R89

Maybe, we need to keep this?  I don't see any tests failing, but I guess we 
don't have a test case to cover this edge case.  And I guess the placement of 
these lines before 'if (g_disable_ssl_init)' check was intentional.



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Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: I98a6a8b3330ea0b372b188690fadd4d312d8bf93
Gerrit-Change-Number: 16657
Gerrit-PatchSet: 11
Gerrit-Owner: Attila Bukor <[email protected]>
Gerrit-Reviewer: Alexey Serbin <[email protected]>
Gerrit-Reviewer: Andrew Wong <[email protected]>
Gerrit-Reviewer: Attila Bukor <[email protected]>
Gerrit-Reviewer: Grant Henke <[email protected]>
Gerrit-Reviewer: Kudu Jenkins (120)
Gerrit-Reviewer: Tidy Bot (241)
Gerrit-Reviewer: Wenzhe Zhou <[email protected]>
Gerrit-Comment-Date: Fri, 30 Oct 2020 18:58:12 +0000
Gerrit-HasComments: Yes

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