[email protected] wrote: > Full_Name: Leonid Yuriev > Version: 2.4.40 > OS: RHEL7 > URL: ftp://ftp.openldap.org/incoming/ > Submission from: (NULL) (31.130.36.33) > > > Currently there is a couple of backtraces only. > This is the result of a stress test of replication in the presence of > sync-conflicts after a "split brain" case. > No any network troubles (just a loopback connections).
Looks like it's accessing freed memory, and it's also related to Abandon processing. You might be running into ITS#7967 as well. If you can reproduce this, try running with a malloc debugger. > > ** Signal 11 (Segmentation fault), address is 0x797a from 0x50e8bd > (0) /opt/openldap.devel/libexec/slapd() [0x50e8bd]: syncprov_op_abandon > /home/ly/Projects/openldap.git/servers/slapd/overlays/syncprov.c:1134 > (1) /opt/openldap.devel/libexec/slapd() [0x48b31a]: overlay_op_walk > /home/ly/Projects/openldap.git/servers/slapd/backover.c:662 > (2) /opt/openldap.devel/libexec/slapd() [0x48b4c1]: over_op_func > /home/ly/Projects/openldap.git/servers/slapd/backover.c:724 > (3) /opt/openldap.devel/libexec/slapd() [0x4429a7]: fe_op_abandon > /home/ly/Projects/openldap.git/servers/slapd/abandon.c:134 (discriminator 2) > (4) /opt/openldap.devel/libexec/slapd() [0x42283c]: connection_abandon > /home/ly/Projects/openldap.git/servers/slapd/connection.c:740 (discriminator > 3) > (5) /opt/openldap.devel/libexec/slapd() [0x424509]: connection_closing > /home/ly/Projects/openldap.git/servers/slapd/connection.c:829 > (6) /opt/openldap.devel/libexec/slapd() [0x4250ef]: connection_read > /home/ly/Projects/openldap.git/servers/slapd/connection.c:1477 > connection_read_thread > /home/ly/Projects/openldap.git/servers/slapd/connection.c:1284 > (7) /opt/openldap.devel/lib/libldap_r-2.4.so.2(+0x10cf2) [0x7f8c6de89cf2]: ?? > > *** Signal 11 (Segmentation fault), address is 0x7f7a1e1c5000 from > 0x7f7a1eebfb54 > (0) /lib/x86_64-linux-gnu/libc.so.6(+0x98b54) [0x7f7a1eebfb54]: ????:0 > (1) /opt/openldap.devel/libexec/slapd() [0x4afa7d]: mdb_search > /home/ly/Projects/openldap.git/servers/slapd/back-mdb/search.c:987 > (discriminator 3) > (2) /opt/openldap.devel/libexec/slapd() [0x48b356]: 543edda2 overlay_op_walk > /home/ly/Projects/openldap.git/servers/slapd/backover.c:674 > (3) /opt/openldap.devel/libexec/slapd() [0x48b4c1]: over_op_func > /home/ly/Projects/openldap.git/servers/slapd/backover.c:724 > (4) /opt/openldap.devel/libexec/slapd() [0x427201]: fe_op_search > /home/ly/Projects/openldap.git/servers/slapd/search.c:402 > (5) /opt/openldap.devel/libexec/slapd() [0x426c0c]: do_search > /home/ly/Projects/openldap.git/servers/slapd/search.c:247 > (6) /opt/openld.d.devel/libexec/slapd() [0x424b54]: connection_operation > /home/ly/Projects/openldap.git/servers/slapd/connection.c:1158 > (7) /opt/openldap.devel/libexec/slapd() [0x42526c]: connection_read_thread > /home/ly/Projects/openldap.git/servers/slapd/connection.c:1291 > (8) /opt/openldap.devel/lib/libldap_r-2.4.so.2(+0x10cf2) [0x7f7a1f629cf2]: ?? > > -- -- Howard Chu CTO, Symas Corp. http://www.symas.com Director, Highland Sun http://highlandsun.com/hyc/ Chief Architect, OpenLDAP http://www.openldap.org/project/
