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Mark Michelson dc515bc8ac Merged revisions 260346 via svnmerge from ... https://origsvn.digium.com/svn/asterisk/trunk ................ r260346 | mmichelson | 2010-04-30 15:11:02 -0500 (Fri, 30 Apr 2010) | 24 lines Merged revisions 260345 via svnmerge from https://origsvn.digium.com/svn/asterisk/branches/1.4 ........ r260345 | mmichelson | 2010-04-30 15:08:15 -0500 (Fri, 30 Apr 2010) | 18 lines Fix potential crash from race condition due to accessing channel data without the channel locked. In res_musiconhold.c, there are several places where a channel's stream's existence is checked prior to calling ast_closestream on it. The issue here is that in several cases, the channel was not locked while checking the stream. The result was that if two threads checked the state of the channel's stream at approximately the same time, then there could be a situation where both threads attempt to call ast_closestream on the channel's stream. The result here is that the refcount for the stream would go below 0, resulting in a crash. I have added proper channel locking to res_musiconhold.c to ensure that we do not try to check chan->stream without the channel locked. A Digium customer has been using this patch for several weeks and has not had any crashes since applying the patch. ABE-2147 ........ ................ git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.6.1@260354 65c4cc65-6c06-0410-ace0-fbb531ad65f3		16 years ago
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ael	Merged revisions 222273 via svnmerge from	17 years ago
ais	Merged revisions 184630 via svnmerge from	18 years ago
snmp	AST-2009-005	17 years ago
Makefile	Merged revisions 242967,242971 via svnmerge from	17 years ago
res_adsi.c	…
res_ael_share.c	…
res_agi.c	Merged revisions 254446 via svnmerge from	17 years ago
res_ais.c	Merged revisions 179164 via svnmerge from	18 years ago
res_clioriginate.c	…
res_config_curl.c	AST-2009-005	17 years ago
res_config_ldap.c	Merged revisions 240271 via svnmerge from	17 years ago
res_config_odbc.c	Merged revisions 217638 via svnmerge from	17 years ago
res_config_pgsql.c	reverting changes made by r229095 as they are not applicable to 1.6.1	17 years ago
res_config_sqlite.c	AST-2009-005	17 years ago
res_convert.c	Merged revisions 196843 via svnmerge from	17 years ago
res_crypto.c	Merged revisions 205120 via svnmerge from	17 years ago
res_curl.c	…
res_http_post.c	Merged revisions 226099 via svnmerge from	17 years ago
res_indications.c	Merged revisions 168562 via svnmerge from	18 years ago
res_jabber.c	Merged revisions 209098 via svnmerge from	17 years ago
res_limit.c	Merged revisions 217033 via svnmerge from	17 years ago
res_monitor.c	Merged revisions 258776 via svnmerge from	16 years ago
res_musiconhold.c	Merged revisions 260346 via svnmerge from	16 years ago
res_odbc.c	Merged revisions 222176 via svnmerge from	17 years ago
res_phoneprov.c	Merged revisions 222176 via svnmerge from	17 years ago
res_realtime.c	…
res_smdi.c	AST-2009-005	17 years ago
res_snmp.c	…
res_speech.c	Merged revisions 247841 via svnmerge from	17 years ago
res_timing_dahdi.c	Merged revisions 199743 via svnmerge from	17 years ago
res_timing_pthread.c	Merged revisions 199743 via svnmerge from	17 years ago