From: Ivan Sorokin <vanyacpp@gmail.com>
To: alsa-devel@alsa-project.org
Subject: possibly memory leak in alsa-lib
Date: Tue, 30 Oct 2012 02:12:55 +0400 [thread overview]
Message-ID: <508EFF67.6020901@gmail.com> (raw)
[-- Attachment #1: Type: text/plain, Size: 524 bytes --]
The following program shows a few leaks in valgrind (ubuntu 12.04,
alsa-lib 1.0.25, eglibc 2.15):
#include <alsa/asoundlib.h>
int main()
{
snd_pcm_t* pcm = 0;
snd_pcm_open(&pcm, "default", SND_PCM_STREAM_PLAYBACK, 0);
snd_pcm_close(pcm);
snd_config_update_free_global();
}
Do I close pcm correctly? In file MEMORY-LEAK it is written that program
should call snd_config_update_free_global() to free global configuration
cache and I do so.
I'm not sure, but probably some leaks are caused by glibc.
[-- Attachment #2: valgrind-log.txt --]
[-- Type: text/plain, Size: 14069 bytes --]
==3862== Memcheck, a memory error detector
==3862== Copyright (C) 2002-2011, and GNU GPL'd, by Julian Seward et al.
==3862== Using Valgrind-3.7.0 and LibVEX; rerun with -h for copyright info
==3862== Command: ./a.out
==3862==
==3862==
==3862== HEAP SUMMARY:
==3862== in use at exit: 546 bytes in 17 blocks
==3862== total heap usage: 6,098 allocs, 6,081 frees, 233,541 bytes allocated
==3862==
==3862== 16 bytes in 1 blocks are indirectly lost in loss record 1 of 17
==3862== at 0x4C2B6CD: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==3862== by 0x5225459: __nss_lookup_function (nsswitch.c:456)
==3862== by 0x6205184: ???
==3862== by 0x51DC46C: getgrnam_r@@GLIBC_2.2.5 (getXXbyYY_r.c:256)
==3862== by 0x51DBAE3: getgrnam (getXXbyYY.c:117)
==3862== by 0x4EBA4F6: snd1_pcm_direct_parse_open_conf (pcm_direct.c:1614)
==3862== by 0x4EB3959: _snd_pcm_dmix_open (pcm_dmix.c:1278)
==3862== by 0x4E7C5E5: snd_pcm_open_conf (pcm.c:2171)
==3862== by 0x4E7CBBF: snd_pcm_open_noupdate (pcm.c:2225)
==3862== by 0x4E7EB48: snd1_pcm_open_named_slave (pcm.c:2335)
==3862== by 0x4EBE4D4: _snd_pcm_softvol_open (pcm_local.h:864)
==3862== by 0x4E7C5E5: snd_pcm_open_conf (pcm.c:2171)
==3862==
==3862== 16 bytes in 1 blocks are indirectly lost in loss record 2 of 17
==3862== at 0x4C2B6CD: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==3862== by 0x5225459: __nss_lookup_function (nsswitch.c:456)
==3862== by 0x620519E: ???
==3862== by 0x51DC46C: getgrnam_r@@GLIBC_2.2.5 (getXXbyYY_r.c:256)
==3862== by 0x51DBAE3: getgrnam (getXXbyYY.c:117)
==3862== by 0x4EBA4F6: snd1_pcm_direct_parse_open_conf (pcm_direct.c:1614)
==3862== by 0x4EB3959: _snd_pcm_dmix_open (pcm_dmix.c:1278)
==3862== by 0x4E7C5E5: snd_pcm_open_conf (pcm.c:2171)
==3862== by 0x4E7CBBF: snd_pcm_open_noupdate (pcm.c:2225)
==3862== by 0x4E7EB48: snd1_pcm_open_named_slave (pcm.c:2335)
==3862== by 0x4EBE4D4: _snd_pcm_softvol_open (pcm_local.h:864)
==3862== by 0x4E7C5E5: snd_pcm_open_conf (pcm.c:2171)
==3862==
==3862== 16 bytes in 1 blocks are indirectly lost in loss record 3 of 17
==3862== at 0x4C2B6CD: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==3862== by 0x5225459: __nss_lookup_function (nsswitch.c:456)
==3862== by 0x62051B8: ???
==3862== by 0x51DC46C: getgrnam_r@@GLIBC_2.2.5 (getXXbyYY_r.c:256)
==3862== by 0x51DBAE3: getgrnam (getXXbyYY.c:117)
==3862== by 0x4EBA4F6: snd1_pcm_direct_parse_open_conf (pcm_direct.c:1614)
==3862== by 0x4EB3959: _snd_pcm_dmix_open (pcm_dmix.c:1278)
==3862== by 0x4E7C5E5: snd_pcm_open_conf (pcm.c:2171)
==3862== by 0x4E7CBBF: snd_pcm_open_noupdate (pcm.c:2225)
==3862== by 0x4E7EB48: snd1_pcm_open_named_slave (pcm.c:2335)
==3862== by 0x4EBE4D4: _snd_pcm_softvol_open (pcm_local.h:864)
==3862== by 0x4E7C5E5: snd_pcm_open_conf (pcm.c:2171)
==3862==
==3862== 16 bytes in 1 blocks are indirectly lost in loss record 4 of 17
==3862== at 0x4C2B6CD: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==3862== by 0x5225459: __nss_lookup_function (nsswitch.c:456)
==3862== by 0x62051D2: ???
==3862== by 0x51DC46C: getgrnam_r@@GLIBC_2.2.5 (getXXbyYY_r.c:256)
==3862== by 0x51DBAE3: getgrnam (getXXbyYY.c:117)
==3862== by 0x4EBA4F6: snd1_pcm_direct_parse_open_conf (pcm_direct.c:1614)
==3862== by 0x4EB3959: _snd_pcm_dmix_open (pcm_dmix.c:1278)
==3862== by 0x4E7C5E5: snd_pcm_open_conf (pcm.c:2171)
==3862== by 0x4E7CBBF: snd_pcm_open_noupdate (pcm.c:2225)
==3862== by 0x4E7EB48: snd1_pcm_open_named_slave (pcm.c:2335)
==3862== by 0x4EBE4D4: _snd_pcm_softvol_open (pcm_local.h:864)
==3862== by 0x4E7C5E5: snd_pcm_open_conf (pcm.c:2171)
==3862==
==3862== 16 bytes in 1 blocks are indirectly lost in loss record 5 of 17
==3862== at 0x4C2B6CD: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==3862== by 0x5225459: __nss_lookup_function (nsswitch.c:456)
==3862== by 0x62051EC: ???
==3862== by 0x51DC46C: getgrnam_r@@GLIBC_2.2.5 (getXXbyYY_r.c:256)
==3862== by 0x51DBAE3: getgrnam (getXXbyYY.c:117)
==3862== by 0x4EBA4F6: snd1_pcm_direct_parse_open_conf (pcm_direct.c:1614)
==3862== by 0x4EB3959: _snd_pcm_dmix_open (pcm_dmix.c:1278)
==3862== by 0x4E7C5E5: snd_pcm_open_conf (pcm.c:2171)
==3862== by 0x4E7CBBF: snd_pcm_open_noupdate (pcm.c:2225)
==3862== by 0x4E7EB48: snd1_pcm_open_named_slave (pcm.c:2335)
==3862== by 0x4EBE4D4: _snd_pcm_softvol_open (pcm_local.h:864)
==3862== by 0x4E7C5E5: snd_pcm_open_conf (pcm.c:2171)
==3862==
==3862== 19 bytes in 1 blocks are possibly lost in loss record 6 of 17
==3862== at 0x4C2B6CD: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==3862== by 0x51A7D71: strdup (strdup.c:43)
==3862== by 0x4E65866: snd1_dlobj_cache_get (dlmisc.c:272)
==3862== by 0x4E7C5C1: snd_pcm_open_conf (pcm.c:2168)
==3862== by 0x4E7EB8E: snd1_pcm_open_named_slave (pcm.c:2337)
==3862== by 0x4EA5196: _snd_pcm_empty_open (pcm_empty.c:103)
==3862== by 0x4E7C5E5: snd_pcm_open_conf (pcm.c:2171)
==3862== by 0x4E7CBBF: snd_pcm_open_noupdate (pcm.c:2225)
==3862== by 0x40063E: main (2.cpp:6)
==3862==
==3862== 19 bytes in 1 blocks are possibly lost in loss record 7 of 17
==3862== at 0x4C2B6CD: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==3862== by 0x51A7D71: strdup (strdup.c:43)
==3862== by 0x4E65866: snd1_dlobj_cache_get (dlmisc.c:272)
==3862== by 0x4E7C5C1: snd_pcm_open_conf (pcm.c:2168)
==3862== by 0x4E7EB8E: snd1_pcm_open_named_slave (pcm.c:2337)
==3862== by 0x4EBA934: _snd_pcm_asym_open (pcm_asym.c:112)
==3862== by 0x4E7C5E5: snd_pcm_open_conf (pcm.c:2171)
==3862== by 0x4E7EB8E: snd1_pcm_open_named_slave (pcm.c:2337)
==3862== by 0x4EA5196: _snd_pcm_empty_open (pcm_empty.c:103)
==3862== by 0x4E7C5E5: snd_pcm_open_conf (pcm.c:2171)
==3862== by 0x4E7CBBF: snd_pcm_open_noupdate (pcm.c:2225)
==3862== by 0x40063E: main (2.cpp:6)
==3862==
==3862== 32 bytes in 1 blocks are still reachable in loss record 8 of 17
==3862== at 0x4C29DB4: calloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==3862== by 0x57DB59F: _dlerror_run (dlerror.c:142)
==3862== by 0x57DAFC0: dlopen@@GLIBC_2.2.5 (dlopen.c:88)
==3862== by 0x4E6562A: snd_dlopen (dlmisc.c:87)
==3862== by 0x4E60FAB: snd_config_hooks.constprop.26 (conf.c:3310)
==3862== by 0x4E61A07: snd_config_update_r (conf.c:3768)
==3862== by 0x4E61E91: snd_config_update (conf.c:3799)
==3862== by 0x4E7E762: snd_pcm_open (pcm.c:2244)
==3862== by 0x40063E: main (2.cpp:6)
==3862==
==3862== 32 bytes in 1 blocks are indirectly lost in loss record 9 of 17
==3862== at 0x4C2B6CD: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==3862== by 0x520FE0A: tsearch (tsearch.c:281)
==3862== by 0x52253E9: __nss_lookup_function (nsswitch.c:439)
==3862== by 0x6205184: ???
==3862== by 0x51DC46C: getgrnam_r@@GLIBC_2.2.5 (getXXbyYY_r.c:256)
==3862== by 0x51DBAE3: getgrnam (getXXbyYY.c:117)
==3862== by 0x4EBA4F6: snd1_pcm_direct_parse_open_conf (pcm_direct.c:1614)
==3862== by 0x4EB3959: _snd_pcm_dmix_open (pcm_dmix.c:1278)
==3862== by 0x4E7C5E5: snd_pcm_open_conf (pcm.c:2171)
==3862== by 0x4E7CBBF: snd_pcm_open_noupdate (pcm.c:2225)
==3862== by 0x4E7EB48: snd1_pcm_open_named_slave (pcm.c:2335)
==3862== by 0x4EBE4D4: _snd_pcm_softvol_open (pcm_local.h:864)
==3862==
==3862== 32 bytes in 1 blocks are indirectly lost in loss record 10 of 17
==3862== at 0x4C2B6CD: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==3862== by 0x520FE0A: tsearch (tsearch.c:281)
==3862== by 0x52253E9: __nss_lookup_function (nsswitch.c:439)
==3862== by 0x620519E: ???
==3862== by 0x51DC46C: getgrnam_r@@GLIBC_2.2.5 (getXXbyYY_r.c:256)
==3862== by 0x51DBAE3: getgrnam (getXXbyYY.c:117)
==3862== by 0x4EBA4F6: snd1_pcm_direct_parse_open_conf (pcm_direct.c:1614)
==3862== by 0x4EB3959: _snd_pcm_dmix_open (pcm_dmix.c:1278)
==3862== by 0x4E7C5E5: snd_pcm_open_conf (pcm.c:2171)
==3862== by 0x4E7CBBF: snd_pcm_open_noupdate (pcm.c:2225)
==3862== by 0x4E7EB48: snd1_pcm_open_named_slave (pcm.c:2335)
==3862== by 0x4EBE4D4: _snd_pcm_softvol_open (pcm_local.h:864)
==3862==
==3862== 32 bytes in 1 blocks are indirectly lost in loss record 11 of 17
==3862== at 0x4C2B6CD: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==3862== by 0x520FE0A: tsearch (tsearch.c:281)
==3862== by 0x52253E9: __nss_lookup_function (nsswitch.c:439)
==3862== by 0x62051B8: ???
==3862== by 0x51DC46C: getgrnam_r@@GLIBC_2.2.5 (getXXbyYY_r.c:256)
==3862== by 0x51DBAE3: getgrnam (getXXbyYY.c:117)
==3862== by 0x4EBA4F6: snd1_pcm_direct_parse_open_conf (pcm_direct.c:1614)
==3862== by 0x4EB3959: _snd_pcm_dmix_open (pcm_dmix.c:1278)
==3862== by 0x4E7C5E5: snd_pcm_open_conf (pcm.c:2171)
==3862== by 0x4E7CBBF: snd_pcm_open_noupdate (pcm.c:2225)
==3862== by 0x4E7EB48: snd1_pcm_open_named_slave (pcm.c:2335)
==3862== by 0x4EBE4D4: _snd_pcm_softvol_open (pcm_local.h:864)
==3862==
==3862== 32 bytes in 1 blocks are indirectly lost in loss record 12 of 17
==3862== at 0x4C2B6CD: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==3862== by 0x520FE0A: tsearch (tsearch.c:281)
==3862== by 0x52253E9: __nss_lookup_function (nsswitch.c:439)
==3862== by 0x62051D2: ???
==3862== by 0x51DC46C: getgrnam_r@@GLIBC_2.2.5 (getXXbyYY_r.c:256)
==3862== by 0x51DBAE3: getgrnam (getXXbyYY.c:117)
==3862== by 0x4EBA4F6: snd1_pcm_direct_parse_open_conf (pcm_direct.c:1614)
==3862== by 0x4EB3959: _snd_pcm_dmix_open (pcm_dmix.c:1278)
==3862== by 0x4E7C5E5: snd_pcm_open_conf (pcm.c:2171)
==3862== by 0x4E7CBBF: snd_pcm_open_noupdate (pcm.c:2225)
==3862== by 0x4E7EB48: snd1_pcm_open_named_slave (pcm.c:2335)
==3862== by 0x4EBE4D4: _snd_pcm_softvol_open (pcm_local.h:864)
==3862==
==3862== 32 bytes in 1 blocks are indirectly lost in loss record 13 of 17
==3862== at 0x4C2B6CD: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==3862== by 0x520FE0A: tsearch (tsearch.c:281)
==3862== by 0x52253E9: __nss_lookup_function (nsswitch.c:439)
==3862== by 0x62051EC: ???
==3862== by 0x51DC46C: getgrnam_r@@GLIBC_2.2.5 (getXXbyYY_r.c:256)
==3862== by 0x51DBAE3: getgrnam (getXXbyYY.c:117)
==3862== by 0x4EBA4F6: snd1_pcm_direct_parse_open_conf (pcm_direct.c:1614)
==3862== by 0x4EB3959: _snd_pcm_dmix_open (pcm_dmix.c:1278)
==3862== by 0x4E7C5E5: snd_pcm_open_conf (pcm.c:2171)
==3862== by 0x4E7CBBF: snd_pcm_open_noupdate (pcm.c:2225)
==3862== by 0x4E7EB48: snd1_pcm_open_named_slave (pcm.c:2335)
==3862== by 0x4EBE4D4: _snd_pcm_softvol_open (pcm_local.h:864)
==3862==
==3862== 56 bytes in 1 blocks are possibly lost in loss record 14 of 17
==3862== at 0x4C2B6CD: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==3862== by 0x4E65787: snd1_dlobj_cache_get (dlmisc.c:267)
==3862== by 0x4E7C5C1: snd_pcm_open_conf (pcm.c:2168)
==3862== by 0x4E7EB8E: snd1_pcm_open_named_slave (pcm.c:2337)
==3862== by 0x4EA5196: _snd_pcm_empty_open (pcm_empty.c:103)
==3862== by 0x4E7C5E5: snd_pcm_open_conf (pcm.c:2171)
==3862== by 0x4E7CBBF: snd_pcm_open_noupdate (pcm.c:2225)
==3862== by 0x40063E: main (2.cpp:6)
==3862==
==3862== 56 bytes in 1 blocks are possibly lost in loss record 15 of 17
==3862== at 0x4C2B6CD: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==3862== by 0x4E65787: snd1_dlobj_cache_get (dlmisc.c:267)
==3862== by 0x4E7C5C1: snd_pcm_open_conf (pcm.c:2168)
==3862== by 0x4E7EB8E: snd1_pcm_open_named_slave (pcm.c:2337)
==3862== by 0x4EBA934: _snd_pcm_asym_open (pcm_asym.c:112)
==3862== by 0x4E7C5E5: snd_pcm_open_conf (pcm.c:2171)
==3862== by 0x4E7EB8E: snd1_pcm_open_named_slave (pcm.c:2337)
==3862== by 0x4EA5196: _snd_pcm_empty_open (pcm_empty.c:103)
==3862== by 0x4E7C5E5: snd_pcm_open_conf (pcm.c:2171)
==3862== by 0x4E7CBBF: snd_pcm_open_noupdate (pcm.c:2225)
==3862== by 0x40063E: main (2.cpp:6)
==3862==
==3862== 64 bytes in 1 blocks are still reachable in loss record 16 of 17
==3862== at 0x4C2B6CD: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==3862== by 0x400EF60: _dl_signal_error (dl-error.c:90)
==3862== by 0x40151DE: _dl_close (dl-close.c:765)
==3862== by 0x400F175: _dl_catch_error (dl-error.c:178)
==3862== by 0x57DB52E: _dlerror_run (dlerror.c:164)
==3862== by 0x57DB00E: dlclose (dlclose.c:48)
==3862== by 0x4E65A7E: snd1_dlobj_cache_cleanup (dlmisc.c:321)
==3862== by 0x4E5DF54: snd_config_update_free_global (conf.c:3842)
==3862== by 0x40064F: main (2.cpp:8)
==3862==
==3862== 300 (60 direct, 240 indirect) bytes in 1 blocks are definitely lost in loss record 17 of 17
==3862== at 0x4C2B6CD: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==3862== by 0x5224594: nss_parse_service_list (nsswitch.c:678)
==3862== by 0x5225055: __nss_database_lookup (nsswitch.c:175)
==3862== by 0x6205169: ???
==3862== by 0x51DC46C: getgrnam_r@@GLIBC_2.2.5 (getXXbyYY_r.c:256)
==3862== by 0x51DBAE3: getgrnam (getXXbyYY.c:117)
==3862== by 0x4EBA4F6: snd1_pcm_direct_parse_open_conf (pcm_direct.c:1614)
==3862== by 0x4EB3959: _snd_pcm_dmix_open (pcm_dmix.c:1278)
==3862== by 0x4E7C5E5: snd_pcm_open_conf (pcm.c:2171)
==3862== by 0x4E7CBBF: snd_pcm_open_noupdate (pcm.c:2225)
==3862== by 0x4E7EB48: snd1_pcm_open_named_slave (pcm.c:2335)
==3862== by 0x4EBE4D4: _snd_pcm_softvol_open (pcm_local.h:864)
==3862==
==3862== LEAK SUMMARY:
==3862== definitely lost: 60 bytes in 1 blocks
==3862== indirectly lost: 240 bytes in 10 blocks
==3862== possibly lost: 150 bytes in 4 blocks
==3862== still reachable: 96 bytes in 2 blocks
==3862== suppressed: 0 bytes in 0 blocks
==3862==
==3862== For counts of detected and suppressed errors, rerun with: -v
==3862== ERROR SUMMARY: 5 errors from 5 contexts (suppressed: 2 from 2)
[-- Attachment #3: Type: text/plain, Size: 0 bytes --]
next reply other threads:[~2012-10-29 22:12 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-29 22:12 Ivan Sorokin [this message]
2012-10-30 10:48 ` possibly memory leak in alsa-lib Jaroslav Kysela
2012-10-30 21:36 ` Ivan Sorokin
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=508EFF67.6020901@gmail.com \
--to=vanyacpp@gmail.com \
--cc=alsa-devel@alsa-project.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.