Hi Mark, On 8/28/20 2:51 PM, Mark Reynolds wrote:
Sorry the plugin guide has not been maintained in a long time. There was a discussion to just remove it. Can you provide the stack trace from the crash? I'm sure we help get it straightened out...
you are very kind. My C knowledge is kinda outdated, it's about 20years I last time created something bigger in C.
I'm fighting with gdb how to be able trace debug 389 ds with plugin loaded: root@ldap33:~# gdb /usr/sbin/ns-slapd
(gdb) run -d 65536 -D /etc/dirsrv/slapd-ldap33 -i /var/run/dirsrv/slapd-ldap33.pid Starting program: /usr/sbin/ns-slapd -d 65536 -D /etc/dirsrv/slapd-ldap33 -i /var/run/dirsrv/slapd-ldap33.pid [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". [31/Aug/2020:11:14:36.396980567 +0200] - DEBUG - syntax-plugin - => bin_init ... [31/Aug/2020:11:15:11.443569660 +0200] - ERR - altpass-plugin - do_pre_bind: 1 [31/Aug/2020:11:15:11.445011559 +0200] - ERR - altpass-plugin - do_pre_bind: 2 [31/Aug/2020:11:15:11.446302153 +0200] - ERR - altpass-plugin - do_pre_bind: 3 [31/Aug/2020:11:15:11.447546080 +0200] - ERR - altpass-plugin - do_pre_bind: 4 [31/Aug/2020:11:15:11.448848356 +0200] - ERR - altpass-plugin - do_pre_bind: 5 [31/Aug/2020:11:15:11.450387903 +0200] - ERR - altpass-plugin - do_pre_bind: 6 [31/Aug/2020:11:15:11.451510488 +0200] - ERR - altpass-plugin - do_pre_bind: 7 [31/Aug/2020:11:15:11.453559193 +0200] - ERR - altpass-plugin - do_pre_bind: 8 [31/Aug/2020:11:15:11.454709087 +0200] - ERR - altpass-plugin - do_pre_bind: 9 [31/Aug/2020:11:15:11.455636136 +0200] - ERR - altpass-plugin - do_pre_bind: 9a [31/Aug/2020:11:15:11.456657442 +0200] - ERR - altpass-plugin - do_pre_bind: 9a: filter=(memberNisNetgroup=2001:718:1:6::134:138) Thread 17 "ns-slapd" received signal SIGSEGV, Segmentation fault. [Switching to Thread 0x7fffd0ff9700 (LWP 28079)] 0x00007ffff4318b52 in do_pre_bind () from /usr/lib/x86_64-linux-gnu/dirsrv/plugins/altpass-plugin.so (gdb) bt #0 0x00007ffff4318b52 in do_pre_bind () at /usr/lib/x86_64-linux-gnu/dirsrv/plugins/altpass-plugin.so #1 0x00007ffff4318f3b in pre_bind () at /usr/lib/x86_64-linux-gnu/dirsrv/plugins/altpass-plugin.so #2 0x00007ffff7f0c409 in None () at /usr/lib/x86_64-linux-gnu/dirsrv/libslapd.so.0 #3 0x00007ffff7f0c654 in plugin_call_plugins () at /usr/lib/x86_64-linux-gnu/dirsrv/libslapd.so.0 #4 0x000055555556907e in None () #5 0x000055555557045a in None () #6 0x00007ffff7c13ec7 in None () at /usr/lib/x86_64-linux-gnu/libnspr4.so #7 0x00007ffff7bb3fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486 #8 0x00007ffff77ed4cf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
When I set breakpoint at start of do_pre_bind():
(gdb) b do_pre_bind Breakpoint 1 at 0x7ffff431879a (gdb) r The program being debugged has been started already. Start it from the beginning? (y or n) y [Switching to Thread 0x7fffd0ff9700 (LWP 28116)] Thread 17 "ns-slapd" hit Breakpoint 1, 0x00007ffff431879a in do_pre_bind () from /usr/lib/x86_64-linux-gnu/dirsrv/plugins/altpass-plugin.so(gdb)(gdb) l 1 ../sysdeps/x86_64/crti.S: No such file or directory.(gdb)
Tips how to properly set debug environment would be very welcome. I was unable to locate crti.S anywhere in debian packages https://packages.debian.org/search?searchon=contents&keywords=x86_64%2Fcrti.S&mode=path&suite=stable&arch=any
Source code around SIGSEGV place:
slapi_entry_free(user_entry);
user_entry = NULL;
log_fatal("do_pre_bind: 9\n");
// Find corresponding service(s)
char filter[200];
snprintf(filter, sizeof(filter), "(memberNisNetgroup=%s)", clientIP);
log_fatal("do_pre_bind: 9a\n");
log_fatal("do_pre_bind: 9a: filter=%s\n", filter);
find_entries(conf->group_suffix, filter, attributes, &matching_services);
function find_entries() is never entered. Thanks -- ----------------------- Jan Tomasek aka Semik http://www.tomasek.cz/
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