MySQL Bugs: #85671: segfault-t failing under recent AddressSanitizer

Bug #85671	segfault-t failing under recent AddressSanitizer
Submitted:	28 Mar 2017 11:43	Modified:	29 Mar 2017 13:38
Reporter:	Laurynas Biveinis (OCA)	Email Updates:
Status:	Closed	Impact on me:	None
Category:	Tests: System	Severity:	S3 (Non-critical)
Version:	5.6+	OS:	Any
Assigned to:		CPU Architecture:	Any
Tags:	asan, unit tests

Description:
5.6.35 on Ubuntu Yakkety, GCC compiler with ASan:

unittest/gunit/merge_large_tests-t 
...
# Run 3 FatalSignalDeathTest.Segfault
/home/laurynas/mysql-server/unittest/gunit/segfault-t.cc:66: FailureDeath test: *pint= 42
    Result: died but not with expected error.
  Expected: .*ASAN:SIGSEGV.*
Actual msg:
[  DEATH   ] ASAN:DEADLYSIGNAL
[  DEATH   ] =================================================================
[  DEATH   ] ==8818==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000000 (pc 0x5564895c0b0f bp 0x7fff12e59450 sp 0x7fff12e59280 T0)
[  DEATH   ]     #0 0x5564895c0b0e in segfault_unittest::FatalSignalDeathTest_Segfault_Test::TestBody() /home/laurynas/mysql-server/unittest/gunit/segfault-t.cc:66
[  DEATH   ]     #1 0x55648aa755c1 in void testing::internal::HandleSehExceptionsInMethodIfSupported<testing::Test, void>(testing::Test*, void (testing::Test::*)(), char const*) /home/laurynas/mysql-server/source_downloads/googletest-release-1.8.0/googletest/src/gtest.cc:2402
[  DEATH   ]     #2 0x55648aa755c1 in void testing::internal::HandleExceptionsInMethodIfSupported<testing::Test, void>(testing::Test*, void (testing::Test::*)(), char const*) /home/laurynas/mysql-server/source_downloads/googletest-release-1.8.0/googletest/src/gtest.cc:2438
[  DEATH   ]     #3 0x55648aa6263e in testing::Test::Run() /home/laurynas/mysql-server/source_downloads/googletest-release-1.8.0/googletest/src/gtest.cc:2475
[  DEATH   ]     #4 0x55648aa628db in testing::TestInfo::Run() /home/laurynas/mysql-server/source_downloads/googletest-release-1.8.0/googletest/src/gtest.cc:2656
[  DEATH   ]     #5 0x55648aa62a62 in testing::TestCase::Run() /home/laurynas/mysql-server/source_downloads/googletest-release-1.8.0/googletest/src/gtest.cc:2774
[  DEATH   ]     #6 0x55648aa62fb0 in testing::internal::UnitTestImpl::RunAllTests() /home/laurynas/mysql-server/source_downloads/googletest-release-1.8.0/googletest/src/gtest.cc:4649
[  DEATH   ]     #7 0x55648aa76144 in bool testing::internal::HandleSehExceptionsInMethodIfSupported<testing::internal::UnitTestImpl, bool>(testing::internal::UnitTestImpl*, bool (testing::internal::UnitTestImpl::*)(), char const*) /home/laurynas/mysql-server/source_downloads/googletest-release-1.8.0/googletest/src/gtest.cc:2402
[  DEATH   ]     #8 0x55648aa76144 in bool testing::internal::HandleExceptionsInMethodIfSupported<testing::internal::UnitTestImpl, bool>(testing::internal::UnitTestImpl*, bool (testing::internal::UnitTestImpl::*)(), char const*) /home/laurynas/mysql-server/source_downloads/googletest-release-1.8.0/googletest/src/gtest.cc:2438
[  DEATH   ]     #9 0x55648aa6376c in testing::UnitTest::Run() /home/laurynas/mysql-server/source_downloads/googletest-release-1.8.0/googletest/src/gtest.cc:4257
[  DEATH   ]     #10 0x55648a14637b in RUN_ALL_TESTS() /home/laurynas/mysql-server/source_downloads/googletest-release-1.8.0/googletest/include/gtest/gtest.h:2233
[  DEATH   ]     #11 0x55648a14637b in main /home/laurynas/mysql-server/unittest/gunit/gunit_test_main_server.cc:72
[  DEATH   ]     #12 0x7f2f909f03f0 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x203f0)
[  DEATH   ]     #13 0x556489563569 in _start (/home/laurynas/obj-percona-5.6-asan-debug/unittest/gunit/merge_large_tests-t+0x671569)
[  DEATH   ] 
[  DEATH   ] AddressSanitizer can not provide additional info.
[  DEATH   ] SUMMARY: AddressSanitizer: SEGV /home/laurynas/mysql-server/unittest/gunit/segfault-t.cc:66 in segfault_unittest::FatalSignalDeathTest_Segfault_Test::TestBody()
[  DEATH   ] ==8818==ABORTING
[  DEATH   ] 
not ok 3

How to repeat:
See above

Suggested fix:
Looks like both "ASAN:SIGSEGV" and "ASAN:DEADLYSIGNAL" should be expected

Hello Laurynas,

Thank you for the report and feedback.
Verified as described.

Thanks,
Umesh

test results

Attachment: 85671.results (application/octet-stream, text), 12.34 KiB.

Posted by developer:
 
Fixed in 5.6.37.

Work was done for test suite. No changelog entry needed.