Details
Minor Description
I built the server with openSSL (WITH_SSL=system instead of bundled) and started getting valgrind warnings on server shutdown:
perl ./mtr alias --valgrind-mysqld
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==29019== 24 bytes in 1 blocks are still reachable in loss record 1 of 600
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==29019== at 0x4C2B6CD: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
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==29019== by 0x5DCE7F3: CRYPTO_malloc (in /lib/x86_64-linux-gnu/libcrypto.so.1.0.0)
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==29019== by 0x5E4928A: lh_insert (in /lib/x86_64-linux-gnu/libcrypto.so.1.0.0)
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==29019== by 0x5DD149B: OBJ_NAME_add (in /lib/x86_64-linux-gnu/libcrypto.so.1.0.0)
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==29019== by 0x5E53714: EVP_add_cipher (in /lib/x86_64-linux-gnu/libcrypto.so.1.0.0)
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==29019== by 0x5B54690: SSL_library_init (in /lib/x86_64-linux-gnu/libssl.so.1.0.0)
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==29019== by 0xEBE487: check_ssl_init (viosslfactories.c:155)
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==29019== by 0xEBE5AA: new_VioSSLFd (viosslfactories.c:189)
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==29019== by 0xEBEB66: new_VioSSLAcceptorFd (viosslfactories.c:336)
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==29019== by 0x5841CF: init_ssl() (mysqld.cc:4412)
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==29019== by 0x585888: mysqld_main(int, char**) (mysqld.cc:5224)
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==29019== by 0x57C4C3: main (main.cc:25)
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==29019==
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==29019== 24 bytes in 1 blocks are still reachable in loss record 2 of 600
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==29019== at 0x4C2B6CD: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
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==29019== by 0x5DCE7F3: CRYPTO_malloc (in /lib/x86_64-linux-gnu/libcrypto.so.1.0.0)
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==29019== by 0x5E4928A: lh_insert (in /lib/x86_64-linux-gnu/libcrypto.so.1.0.0)
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==29019== by 0x5DD149B: OBJ_NAME_add (in /lib/x86_64-linux-gnu/libcrypto.so.1.0.0)
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==29019== by 0x5B54690: SSL_library_init (in /lib/x86_64-linux-gnu/libssl.so.1.0.0)
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==29019== by 0xEBE487: check_ssl_init (viosslfactories.c:155)
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==29019== by 0xEBE5AA: new_VioSSLFd (viosslfactories.c:189)
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==29019== by 0xEBEB66: new_VioSSLAcceptorFd (viosslfactories.c:336)
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==29019== by 0x5841CF: init_ssl() (mysqld.cc:4412)
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==29019== by 0x585888: mysqld_main(int, char**) (mysqld.cc:5224)
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==29019== by 0x57C4C3: main (main.cc:25)
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==29019==
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...
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I'm not sure whether they're essential or not, and if they are, whether it's our fault, maybe it's a bad valgrind version or a 3rd-party library bug.
ldd ../sql/mysqld
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linux-vdso.so.1 => (0x00007fff7578d000)
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libodbc.so.1 => /usr/lib/x86_64-linux-gnu/libodbc.so.1 (0x00007f1731474000)
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libaio.so.1 => /lib/x86_64-linux-gnu/libaio.so.1 (0x00007f1731272000)
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libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007f173105a000)
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librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007f1730e52000)
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libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f1730c35000)
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libcrypt.so.1 => /lib/x86_64-linux-gnu/libcrypt.so.1 (0x00007f17309fb000)
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libssl.so.1.0.0 => /lib/x86_64-linux-gnu/libssl.so.1.0.0 (0x00007f173079d000)
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libcrypto.so.1.0.0 => /lib/x86_64-linux-gnu/libcrypto.so.1.0.0 (0x00007f17303d5000)
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libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f17301d0000)
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libstdc++.so.6 => /usr/lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007f172fed0000)
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libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f172fbd4000)
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libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007f172f9bd000)
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libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f172f5fe000)
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libltdl.so.7 => /usr/lib/x86_64-linux-gnu/libltdl.so.7 (0x00007f172f3f4000)
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/lib64/ld-linux-x86-64.so.2 (0x00007f17316ed000)
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valgrind --version
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valgrind-3.7.0
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