https://bugs.openldap.org/show_bug.cgi?id=9435
Issue ID: 9435
Summary: LDAP Servers locked up and unresponsive
Product: OpenLDAP
Version: 2.4.56
Hardware: x86_64
OS: Linux
Status: UNCONFIRMED
Severity: normal
Priority: ---
Component: slapd
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
Setup:
I have six OpenLDAP servers running, replicating in mirrormode and using
slapd-perl.
Problem:
On rare occasions servers will lock up and be unresponsive.
Workaround:
Restart the slapd process will resolve this problem.
Observations:
- Checking with gdb, lock occurs when binding.
- I don't know how to reproduce this reliably and how to fix.
slapd.conf setting (excerpt):
...
database perl
suffix "secret"
perlModulePath secret
perlModule secret
perlModuleConfig logfile secret
...
overlay syncprov
serverID 1
syncrepl rid=001
...
mirrormode on
GDB:
(gdb) bt
#0 0x00007f6a3ed9370a in pthread_join () from /lib64/libpthread.so.0
#1 0x00000000005c7ce2 in ldap_pvt_thread_join ()
#2 0x000000000045f7aa in slapd_daemon ()
#3 0x000000000043cc45 in main ()
(gdb) thread apply all bt
Thread 17 (Thread 0x7f69fb7eb700 (LWP 945)):
#0 0x00007f6a3ed9b2ad in __lll_lock_wait () from /lib64/libpthread.so.0
#1 0x00007f6a3ed94bfd in pthread_mutex_lock () from /lib64/libpthread.so.0
#2 0x00000000005c7df4 in ldap_pvt_thread_mutex_lock ()
#3 0x00000000005a1ef5 in perl_back_bind ()
#4 0x000000000048b367 in fe_op_bind ()
#5 0x000000000048aa25 in do_bind ()
#6 0x000000000046295b in ?? ()
#7 0x0000000000462ef7 in ?? ()
#8 0x00000000005c684d in ?? ()
#9 0x00007f6a3ed9240b in start_thread () from /lib64/libpthread.so.0
#10 0x00007f6a3d443e7f in clone () from /lib64/libc.so.6
Please let me know if you have any other information you need.
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