Percona Server with XtraDB

Valgrind: 32 bytes in 1 blocks are still reachable in malloc > CRYPTO_malloc > sk_new

Reported by Roel Van de Paar on 2013-07-26
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
MySQL Server
Unknown
Unknown
Percona Server
Status tracked in 5.6
5.1
Undecided
Unassigned
5.5
Undecided
Unassigned
5.6
Low
Sergei Glushchenko

Bug Description

2013-07-26 08:25:51 32338 [Note] /ssd/Percona-Server-5.6.12-rc60.4-406-debug-valgrind.Linux.x86_64/bin/mysqld: Shutdown complete

==32338==
==32338== HEAP SUMMARY:
==32338== in use at exit: 75,876,624 bytes in 832 blocks
==32338== total heap usage: 32,498 allocs, 31,666 frees, 130,387,498 bytes allocated
==32338==
==32338== 32 bytes in 1 blocks are still reachable in loss record 1 of 296
==32338== at 0x4A069EE: malloc (vg_replace_malloc.c:270)
==32338== by 0x3417C5D9CD: CRYPTO_malloc (in /usr/lib64/libcrypto.so.1.0.0)
==32338== by 0x3417CB6F5E: sk_new (in /usr/lib64/libcrypto.so.1.0.0)
==32338== by 0x341C83D0E4: ??? (in /usr/lib64/libssl.so.1.0.0)
==32338== by 0x341C83D308: SSL_COMP_get_compression_methods (in /usr/lib64/libssl.so.1.0.0)
==32338== by 0x341C844651: SSL_library_init (in /usr/lib64/libssl.so.1.0.0)
==32338== by 0xC798DB: ssl_start (viosslfactories.c:155)
==32338== by 0x625FD9: init_ssl() (mysqld.cc:4310)
==32338== by 0x630170: mysqld_main(int, char**) (mysqld.cc:5509)
==32338== by 0x340C41ECDC: (below main) (in /lib64/libc-2.12.so)
==32338==
==32338== 32 bytes in 1 blocks are still reachable in loss record 2 of 296
==32338== at 0x4A069EE: malloc (vg_replace_malloc.c:270)
==32338== by 0x3417C5D9CD: CRYPTO_malloc (in /usr/lib64/libcrypto.so.1.0.0)
==32338== by 0x3417CB6F7C: sk_new (in /usr/lib64/libcrypto.so.1.0.0)
==32338== by 0x341C83D0E4: ??? (in /usr/lib64/libssl.so.1.0.0)
==32338== by 0x341C83D308: SSL_COMP_get_compression_methods (in /usr/lib64/libssl.so.1.0.0)
==32338== by 0x341C844651: SSL_library_init (in /usr/lib64/libssl.so.1.0.0)
==32338== by 0xC798DB: ssl_start (viosslfactories.c:155)
==32338== by 0x625FD9: init_ssl() (mysqld.cc:4310)
==32338== by 0x630170: mysqld_main(int, char**) (mysqld.cc:5509)
==32338== by 0x340C41ECDC: (below main) (in /lib64/libc-2.12.so)

Roel Van de Paar (roel11) wrote :

This is a split from bug 1191582. Testing for this error can be done with the testcase from that bug (note to self: /sssd/209184/start_mtr1000). If you like, we can test a fix in the same bug branch used for that bug.

summary: - 32 bytes in 1 blocks are still reachable in malloc > CRYPTO_malloc >
- sk_new
+ Valgrind: 32 bytes in 1 blocks are still reachable in malloc >
+ CRYPTO_malloc > sk_new
tags: removed: qablock
Roel Van de Paar (roel11) wrote :

Actually, not qablock/critical. But may be easy to fix in one patch with bug 1191582.
[roel@qaserver 209184]$ grep -m1 "CRYPTO_malloc (in /usr/lib64/libcrypto.so.1.0.0)" vardir1_*/log/master.err | wc -l
10

Either an upstream bug as-is, either a bug that is benign on upstream but visible on PS due to different SSL library used.

tags: added: ssl
tags: added: 56qual
Roel Van de Paar (roel11) wrote :

From 448 trial

32 bytes in 1 blocks are still reachable in loss record 22 of 589
   at 0x4A069EE: malloc (vg_replace_malloc.c:270)
   by 0x364265D9CD: CRYPTO_malloc (in /usr/lib64/libcrypto.so.1.0.0)
   by 0x36426B6F5E: sk_new (in /usr/lib64/libcrypto.so.1.0.0)
   by 0x364663D0E4: ??? (in /usr/lib64/libssl.so.1.0.0)
   by 0x364663D308: SSL_COMP_get_compression_methods (in /usr/lib64/libssl.so.1.0.0)
   by 0x3646644651: SSL_library_init (in /usr/lib64/libssl.so.1.0.0)
   by 0xC9167B: ssl_start (viosslfactories.c:155)
   by 0x6299D9: init_ssl() (mysqld.cc:4333)
   by 0x634766: mysqld_main(int, char**) (mysqld.cc:5544)
   by 0x3636E1ECDC: (below main) (in /lib64/libc-2.12.so)

32 bytes in 1 blocks are still reachable in loss record 23 of 589
   at 0x4A069EE: malloc (vg_replace_malloc.c:270)
   by 0x364265D9CD: CRYPTO_malloc (in /usr/lib64/libcrypto.so.1.0.0)
   by 0x36426B6F7C: sk_new (in /usr/lib64/libcrypto.so.1.0.0)
   by 0x364663D0E4: ??? (in /usr/lib64/libssl.so.1.0.0)
   by 0x364663D308: SSL_COMP_get_compression_methods (in /usr/lib64/libssl.so.1.0.0)
   by 0x3646644651: SSL_library_init (in /usr/lib64/libssl.so.1.0.0)
   by 0xC9167B: ssl_start (viosslfactories.c:155)
   by 0x6299D9: init_ssl() (mysqld.cc:4333)
   by 0x634766: mysqld_main(int, char**) (mysqld.cc:5544)
   by 0x3636E1ECDC: (below main) (in /lib64/libc-2.12.so)

As I said on IRC, there is a suppression for this leak in upstream but it didn't work because
 by 0x364663D0E4: ??? (in /usr/lib64/libssl.so.1.0.0)
is not resolved, which probably depends on distro/openssl version or smth.
I propose we just make this suppression work.

tags: removed: 56qual
tags: added: upstream
To post a comment you must log in.
This report contains Public information  Edit
Everyone can see this information.

Other bug subscribers

Remote bug watches

Bug watches keep track of this bug in other bug trackers.