** Description changed: When I try to remove certain entries from OpenLDAP, slapd crashes with a segmentation fault, when using the mdb backend. When I looked at the backtrace, it appeared to be this issue: http://www.openldap.org/its/index.cgi/Software%20Bugs?id=7174 which is fixed in later versions of Ubuntu (it was fixed in OpenLDAP 2.4.30), but not in precise. It was fixed upstream in this commit: http://www.openldap.org/devel/gitweb.cgi?p=openldap.git;a=commit;h=92ed65d298e47822b9e3ed7d4f9d8b938bf8b780 The bug occurred on a production server (where the bug first occurred) and in a VM using a dump of that server's directory. I've downloaded the source package, applied Ubuntu-specific patches and the above patch, and the bug does seem to be absent from the compiled result. + [Test Case] + 1. Install OpenLDAP (apt-get install slapd ldap-utils) + 2. Run testbug.sh as root (WARNING: this will wipe /etc/ldap/slapd.d and /var/lib/ldap, do this on a clean install) + 3. Run "ldapdelete -x -D cn=admin,dc=example,dc=com -w test -H ldap:/// 'uid=johndoe,dc=example,dc=com' + 4. - Expected result: The delete action succeeds, "ldapsearch -x -LLL -H ldap:/// -b dc=example,dc=com 'uid=johndoe'" should return nothing. + - Actual result: slapd crashes with SIGSEGV (see /var/log/syslog). The entry is not deleted. + ProblemType: Crash DistroRelease: Ubuntu 12.04 Package: slapd 2.4.28-1.1ubuntu4.3 ProcVersionSignature: Ubuntu 3.5.0-23.35~precise1-generic 3.5.7.2 Uname: Linux 3.5.0-23-generic x86_64 ApportVersion: 2.0.1-0ubuntu17.4 Architecture: amd64 Date: Sun Aug 25 18:59:12 2013 ExecutablePath: /usr/sbin/slapd InstallationMedia: Ubuntu-Server 12.04.2 LTS "Precise Pangolin" - Release amd64 (20130214) MarkForUpload: True ProcCmdline: /usr/sbin/slapd -h ldap:///\ ldapi:/// -g openldap -u openldap -F /etc/ldap/slapd.d ProcEnviron: - TERM=xterm - PATH=(custom, no user) - LANG=en_US.utf8 + TERM=xterm + PATH=(custom, no user) + LANG=en_US.utf8 SegvAnalysis: - Segfault happened at: 0x7f208d8ea3b2 <lutil_str2bin+290>: movb $0x0,0x0(%rbp) - PC (0x7f208d8ea3b2) ok - source "$0x0" ok - destination "0x0(%rbp)" (0x7f0c879633d3) in non-writable VMA region: 0x7f0c871b5000-0x7f20871b5000 r--s /var/lib/ldap/data.mdb - Stack memory exhausted (SP below stack segment) + Segfault happened at: 0x7f208d8ea3b2 <lutil_str2bin+290>: movb $0x0,0x0(%rbp) + PC (0x7f208d8ea3b2) ok + source "$0x0" ok + destination "0x0(%rbp)" (0x7f0c879633d3) in non-writable VMA region: 0x7f0c871b5000-0x7f20871b5000 r--s /var/lib/ldap/data.mdb + Stack memory exhausted (SP below stack segment) SegvReason: writing VMA /var/lib/ldap/data.mdb Signal: 11 SourcePackage: openldap StacktraceTop: - lutil_str2bin (in=<optimized out>, out=0x7f0c76ffd430, ctx=0x7f0c70000ea0) at ../../../../libraries/liblutil/utils.c:812 - integerVal2Key (in=<optimized out>, tmp=<optimized out>, ctx=<optimized out>, key=<optimized out>) at ../../../../servers/slapd/schema_init.c:2545 - integerIndexer (use=<optimized out>, flags=<optimized out>, syntax=<optimized out>, mr=<optimized out>, prefix=<optimized out>, values=0x7f0c70001bb8, keysp=0x7f0c76ffd570, ctx=0x7f0c70000ea0) at ../../../../servers/slapd/schema_init.c:2634 - indexer (op=0x7f0c70000900, txn=<optimized out>, ai=<optimized out>, atname=0x7f208f9657b8, vals=0x7f0c70001bb8, id=4103, opid=2, mask=4, ad=<optimized out>) at ../../../../../servers/slapd/back-mdb/index.c:211 - index_at_values (op=0x7f0c70000900, txn=0x7f0c70100f80, type=0x7f208f965750, tags=0x7f208f965900, vals=0x7f0c70001bb8, id=4103, opid=2, ad=<optimized out>) at ../../../../../servers/slapd/back-mdb/index.c:337 + lutil_str2bin (in=<optimized out>, out=0x7f0c76ffd430, ctx=0x7f0c70000ea0) at ../../../../libraries/liblutil/utils.c:812 + integerVal2Key (in=<optimized out>, tmp=<optimized out>, ctx=<optimized out>, key=<optimized out>) at ../../../../servers/slapd/schema_init.c:2545 + integerIndexer (use=<optimized out>, flags=<optimized out>, syntax=<optimized out>, mr=<optimized out>, prefix=<optimized out>, values=0x7f0c70001bb8, keysp=0x7f0c76ffd570, ctx=0x7f0c70000ea0) at ../../../../servers/slapd/schema_init.c:2634 + indexer (op=0x7f0c70000900, txn=<optimized out>, ai=<optimized out>, atname=0x7f208f9657b8, vals=0x7f0c70001bb8, id=4103, opid=2, mask=4, ad=<optimized out>) at ../../../../../servers/slapd/back-mdb/index.c:211 + index_at_values (op=0x7f0c70000900, txn=0x7f0c70100f80, type=0x7f208f965750, tags=0x7f208f965900, vals=0x7f0c70001bb8, id=4103, opid=2, ad=<optimized out>) at ../../../../../servers/slapd/back-mdb/index.c:337 Title: slapd crashed with SIGSEGV in lutil_str2bin() UpgradeStatus: No upgrade log present (probably fresh install) UserGroups:
** Description changed: When I try to remove certain entries from OpenLDAP, slapd crashes with a segmentation fault, when using the mdb backend. When I looked at the backtrace, it appeared to be this issue: http://www.openldap.org/its/index.cgi/Software%20Bugs?id=7174 which is fixed in later versions of Ubuntu (it was fixed in OpenLDAP 2.4.30), but not in precise. It was fixed upstream in this commit: http://www.openldap.org/devel/gitweb.cgi?p=openldap.git;a=commit;h=92ed65d298e47822b9e3ed7d4f9d8b938bf8b780 The bug occurred on a production server (where the bug first occurred) and in a VM using a dump of that server's directory. I've downloaded the source package, applied Ubuntu-specific patches and the above patch, and the bug does seem to be absent from the compiled result. [Test Case] 1. Install OpenLDAP (apt-get install slapd ldap-utils) 2. Run testbug.sh as root (WARNING: this will wipe /etc/ldap/slapd.d and /var/lib/ldap, do this on a clean install) - 3. Run "ldapdelete -x -D cn=admin,dc=example,dc=com -w test -H ldap:/// 'uid=johndoe,dc=example,dc=com' + 3. Run "ldapdelete -x -D cn=admin,dc=example,dc=com -w test -H ldap:/// 'uid=johndoe,dc=example,dc=com'" 4. - Expected result: The delete action succeeds, "ldapsearch -x -LLL -H ldap:/// -b dc=example,dc=com 'uid=johndoe'" should return nothing. - - Actual result: slapd crashes with SIGSEGV (see /var/log/syslog). The entry is not deleted. + - Actual result: slapd crashes with SIGSEGV (see /var/log/syslog). The entry is not deleted. ProblemType: Crash DistroRelease: Ubuntu 12.04 Package: slapd 2.4.28-1.1ubuntu4.3 ProcVersionSignature: Ubuntu 3.5.0-23.35~precise1-generic 3.5.7.2 Uname: Linux 3.5.0-23-generic x86_64 ApportVersion: 2.0.1-0ubuntu17.4 Architecture: amd64 Date: Sun Aug 25 18:59:12 2013 ExecutablePath: /usr/sbin/slapd InstallationMedia: Ubuntu-Server 12.04.2 LTS "Precise Pangolin" - Release amd64 (20130214) MarkForUpload: True ProcCmdline: /usr/sbin/slapd -h ldap:///\ ldapi:/// -g openldap -u openldap -F /etc/ldap/slapd.d ProcEnviron: TERM=xterm PATH=(custom, no user) LANG=en_US.utf8 SegvAnalysis: Segfault happened at: 0x7f208d8ea3b2 <lutil_str2bin+290>: movb $0x0,0x0(%rbp) PC (0x7f208d8ea3b2) ok source "$0x0" ok destination "0x0(%rbp)" (0x7f0c879633d3) in non-writable VMA region: 0x7f0c871b5000-0x7f20871b5000 r--s /var/lib/ldap/data.mdb Stack memory exhausted (SP below stack segment) SegvReason: writing VMA /var/lib/ldap/data.mdb Signal: 11 SourcePackage: openldap StacktraceTop: lutil_str2bin (in=<optimized out>, out=0x7f0c76ffd430, ctx=0x7f0c70000ea0) at ../../../../libraries/liblutil/utils.c:812 integerVal2Key (in=<optimized out>, tmp=<optimized out>, ctx=<optimized out>, key=<optimized out>) at ../../../../servers/slapd/schema_init.c:2545 integerIndexer (use=<optimized out>, flags=<optimized out>, syntax=<optimized out>, mr=<optimized out>, prefix=<optimized out>, values=0x7f0c70001bb8, keysp=0x7f0c76ffd570, ctx=0x7f0c70000ea0) at ../../../../servers/slapd/schema_init.c:2634 indexer (op=0x7f0c70000900, txn=<optimized out>, ai=<optimized out>, atname=0x7f208f9657b8, vals=0x7f0c70001bb8, id=4103, opid=2, mask=4, ad=<optimized out>) at ../../../../../servers/slapd/back-mdb/index.c:211 index_at_values (op=0x7f0c70000900, txn=0x7f0c70100f80, type=0x7f208f965750, tags=0x7f208f965900, vals=0x7f0c70001bb8, id=4103, opid=2, ad=<optimized out>) at ../../../../../servers/slapd/back-mdb/index.c:337 Title: slapd crashed with SIGSEGV in lutil_str2bin() UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to openldap in Ubuntu. https://bugs.launchpad.net/bugs/1216650 Title: slapd crashed with SIGSEGV in lutil_str2bin() when using mdb To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/openldap/+bug/1216650/+subscriptions -- Ubuntu-server-bugs mailing list [email protected] Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
