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kvspb / nginx-auth-ldap

LDAP authentication module for nginx
BSD 2-Clause "Simplified" License
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segmentation fault in module #104

Open kivarun opened 8 years ago

kivarun commented 8 years ago

I have random segfaults in module nginx-auth-ldap Some debug data: nginx -V 

nginx version: nginx/1.9.5
built by gcc 4.8.3 20140911 (Red Hat 4.8.3-9) (GCC) 
built with OpenSSL 1.0.1e-fips 11 Feb 2013
TLS SNI support enabled
configure arguments: --prefix=/etc/nginx --sbin-path=/usr/sbin/nginx --conf-path=/etc/nginx/nginx.conf --error-log-path=/var/log/nginx/error.log --http-log-path=/var/log/nginx/access.log --pid-path=/var/run/nginx.pid --lock-path=/var/run/nginx.lock --http-client-body-temp-path=/var/cache/nginx/client_temp --http-proxy-temp-path=/var/cache/nginx/proxy_temp --http-fastcgi-temp-path=/var/cache/nginx/fastcgi_temp --http-uwsgi-temp-path=/var/cache/nginx/uwsgi_temp --http-scgi-temp-path=/var/cache/nginx/scgi_temp --user=nginx --group=nginx --with-http_ssl_module --with-http_realip_module --with-http_addition_module --with-http_sub_module --with-http_dav_module --with-http_flv_module --with-http_mp4_module --with-http_gunzip_module --with-http_gzip_static_module --with-http_random_index_module --with-http_secure_link_module --with-http_stub_status_module --with-http_auth_request_module --with-mail --with-mail_ssl_module --with-file-aio --with-ipv6 --with-cc-opt='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -m64 -mtune=generic' --add-module=/var/lib/jenkins/workspace/Build_nginx/rpm-build/nginx-1.9.5/nginx-auth-ldap-master

/var/log/nginx/error.log:

2015/10/16 10:33:11 [notice] 1290#0: signal 17 (SIGCHLD) received
2015/10/16 10:33:11 [alert] 1290#0: worker process 2293 exited on signal 11
2015/10/16 10:33:11 [notice] 1290#0: start worker process 59706

nginx config:

http {
.......
      ldap_server ld-ldap {
        url "ldaps://ld-ldap.company.com/dc=company,dc=com?uid?sub?";
        binddn "cn=Manager,dc=company,dc=com";
        binddn_passwd "passwprd";
        group_attribute member;
        group_attribute_is_dn on;
        require valid_user;
      }
      ldap_server ldap {
        url "ldaps://ldap.company.com/dc=company,dc=com?uid?sub?";
        binddn "cn=Manager,dc=company,dc=com";
        binddn_passwd "password";
        group_attribute member;
        group_attribute_is_dn on;
        require valid_user;
      }
.......
server {
.......
    auth_ldap "Forbidden";
    auth_ldap_servers ld-ldap;
    auth_ldap_servers ldap;
.......
    }

dbg debugging:

[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
Core was generated by `nginx: worker process                   '.
Program terminated with signal 11, Segmentation fault.
#0  ngx_http_auth_ldap_return_connection (c=<optimized out>) at /usr/src/debug/nginx-1.9.5/nginx-auth-ldap-master/ngx_http_auth_ldap_module.c:1092
1092            ngx_queue_remove(q);
(gdb) bt
#0  ngx_http_auth_ldap_return_connection (c=<optimized out>) at /usr/src/debug/nginx-1.9.5/nginx-auth-ldap-master/ngx_http_auth_ldap_module.c:1092
#1  0x0000000000497551 in ngx_http_auth_ldap_authenticate (conf=0xe61db0, ctx=0xf032a0, r=0xed5820) at /usr/src/debug/nginx-1.9.5/nginx-auth-ldap-master/ngx_http_auth_ldap_module.c:1797
#2  ngx_http_auth_ldap_handler (r=0xed5820) at /usr/src/debug/nginx-1.9.5/nginx-auth-ldap-master/ngx_http_auth_ldap_module.c:1612
#3  0x0000000000437d6b in ngx_http_core_access_phase (r=<optimized out>, ph=0xe6aa88) at src/http/ngx_http_core_module.c:1066
#4  0x00000000004334e5 in ngx_http_core_run_phases (r=0xed5820) at src/http/ngx_http_core_module.c:840
#5  0x0000000000496324 in ngx_http_auth_ldap_read_handler (rev=0xea5870) at /usr/src/debug/nginx-1.9.5/nginx-auth-ldap-master/ngx_http_auth_ldap_module.c:1410
#6  0x00000000004295a7 in ngx_epoll_process_events (cycle=<optimized out>, timer=<optimized out>, flags=<optimized out>) at src/event/modules/ngx_epoll_module.c:822
#7  0x0000000000421b03 in ngx_process_events_and_timers (cycle=cycle@entry=0xe3b880) at src/event/ngx_event.c:242
#8  0x00000000004276c1 in ngx_worker_process_cycle (cycle=cycle@entry=0xe3b880, data=data@entry=0x0) at src/os/unix/ngx_process_cycle.c:753
#9  0x0000000000426104 in ngx_spawn_process (cycle=cycle@entry=0xe3b880, proc=0x427640 <ngx_worker_process_cycle>, data=0x0, name=0x49c106 "worker process", respawn=respawn@entry=0)
    at src/os/unix/ngx_process.c:198
#10 0x0000000000428832 in ngx_reap_children (cycle=0xe3b880) at src/os/unix/ngx_process_cycle.c:621
#11 ngx_master_process_cycle (cycle=cycle@entry=0xe3b880) at src/os/unix/ngx_process_cycle.c:174
#12 0x0000000000407b0f in main (argc=<optimized out>, argv=<optimized out>) at src/core/nginx.c:415
(gdb) bt full 
#0  ngx_http_auth_ldap_return_connection (c=<optimized out>) at /usr/src/debug/nginx-1.9.5/nginx-auth-ldap-master/ngx_http_auth_ldap_module.c:1092
        q = 0xed5950
#1  0x0000000000497551 in ngx_http_auth_ldap_authenticate (conf=0xe61db0, ctx=0xf032a0, r=0xed5820) at /usr/src/debug/nginx-1.9.5/nginx-auth-ldap-master/ngx_http_auth_ldap_module.c:1797
No locals.
#2  ngx_http_auth_ldap_handler (r=0xed5820) at /usr/src/debug/nginx-1.9.5/nginx-auth-ldap-master/ngx_http_auth_ldap_module.c:1612
        alcf = 0xe61db0
        ctx = 0xf032a0
        rc = <optimized out>
#3  0x0000000000437d6b in ngx_http_core_access_phase (r=<optimized out>, ph=0xe6aa88) at src/http/ngx_http_core_module.c:1066
        rc = <optimized out>
        clcf = <optimized out>
#4  0x00000000004334e5 in ngx_http_core_run_phases (r=0xed5820) at src/http/ngx_http_core_module.c:840
        rc = <optimized out>
        ph = 0xe6a9c8
        cmcf = <optimized out>
#5  0x0000000000496324 in ngx_http_auth_ldap_read_handler (rev=0xea5870) at /usr/src/debug/nginx-1.9.5/nginx-auth-ldap-master/ngx_http_auth_ldap_module.c:1410
        conn = 0xe6f950
        c = 0xe6acf0
        rc = 0
        timeout = {tv_sec = 0, tv_usec = 0}
        result = 0xf14630
        error_code = 0
        error_msg = 0x0
        dn = <optimized out>
#6  0x00000000004295a7 in ngx_epoll_process_events (cycle=<optimized out>, timer=<optimized out>, flags=<optimized out>) at src/event/modules/ngx_epoll_module.c:822
        events = 1
        revents = 5
        instance = <optimized out>
        i = 0
        level = <optimized out>
        err = <optimized out>
        rev = <optimized out>
        wev = <optimized out>
        queue = <optimized out>
        c = 0xe6f950
#7  0x0000000000421b03 in ngx_process_events_and_timers (cycle=cycle@entry=0xe3b880) at src/event/ngx_event.c:242
        flags = <optimized out>
        timer = <optimized out>
        delta = 1444917074915
#8  0x00000000004276c1 in ngx_worker_process_cycle (cycle=cycle@entry=0xe3b880, data=data@entry=0x0) at src/os/unix/ngx_process_cycle.c:753
        worker = 0
#9  0x0000000000426104 in ngx_spawn_process (cycle=cycle@entry=0xe3b880, proc=0x427640 <ngx_worker_process_cycle>, data=0x0, name=0x49c106 "worker process", respawn=respawn@entry=0)
    at src/os/unix/ngx_process.c:198
        on = 1
        pid = 0
        s = 0
#10 0x0000000000428832 in ngx_reap_children (cycle=0xe3b880) at src/os/unix/ngx_process_cycle.c:621
        i = 0
        live = 0
        n = <optimized out>
        ch = {command = 2, pid = 63681, slot = 0, fd = -1}
        ccf = <optimized out>
#11 ngx_master_process_cycle (cycle=cycle@entry=0xe3b880) at src/os/unix/ngx_process_cycle.c:174
        title = <optimized out>
        p = <optimized out>
        size = <optimized out>
        i = <optimized out>
        n = <optimized out>
        sigio = 0
        set = {__val = {0 <repeats 16 times>}}
        itv = {it_interval = {tv_sec = 9, tv_usec = 18}, it_value = {tv_sec = 14929147, tv_usec = 0}}
        live = <optimized out>
        delay = 0
        ls = <optimized out>
        ccf = 0xe3ca40
#12 0x0000000000407b0f in main (argc=<optimized out>, argv=<optimized out>) at src/core/nginx.c:415
        b = <optimized out>
        log = 0x6d50a0 <ngx_log>
        i = <optimized out>
        cycle = 0xe3b880
        init_cycle = {conf_ctx = 0x0, pool = 0xe3b340, log = 0x6d50a0 <ngx_log>, new_log = {log_level = 0, file = 0x0, connection = 0, disk_full_time = 0, handler = 0x0, data = 0x0, 
            writer = 0x0, wdata = 0x0, action = 0x0, next = 0x0}, log_use_stderr = 0, files = 0x0, free_connections = 0x0, free_connection_n = 0, reusable_connections_queue = {prev = 0x0, 
            next = 0x0}, listening = {elts = 0x0, nelts = 0, size = 0, nalloc = 0, pool = 0x0}, paths = {elts = 0x0, nelts = 0, size = 0, nalloc = 0, pool = 0x0}, config_dump = {elts = 0x0, 
            nelts = 0, size = 0, nalloc = 0, pool = 0x0}, open_files = {last = 0x0, part = {elts = 0x0, nelts = 0, next = 0x0}, size = 0, nalloc = 0, pool = 0x0}, shared_memory = {
            last = 0x0, part = {elts = 0x0, nelts = 0, next = 0x0}, size = 0, nalloc = 0, pool = 0x0}, connection_n = 0, files_n = 0, connections = 0x0, read_events = 0x0, 
          write_events = 0x0, old_cycle = 0x0, conf_file = {len = 21, data = 0x7fff9ab5df8a "ss"}, conf_param = {len = 0, data = 0x0}, conf_prefix = {len = 11, data = 0x7fff9ab5df8a "ss"}, 
          prefix = {len = 11, data = 0x498ae1 "/etc/nginx/"}, lock_file = {len = 0, data = 0x0}, hostname = {len = 0, data = 0x0}}
        cd = <optimized out>
        ccf = <optimized out>
augustf commented 8 years ago

@kivarun Do you think this may be related to my errors reported in #99?

kivarun commented 8 years ago

@augustf I think that we can find out if you make coredump analiz.

hardillb commented 8 years ago

Looks like I'm hitting this as well. @augustf did you get to the bottom of it?

(gdb) bt
#0  0x00000000004824f7 in ngx_http_auth_ldap_return_connection (c=0x2434dc0) at /root/nginx-auth-ldap/ngx_http_auth_ldap_module.c:1103
#1  0x0000000000485287 in ngx_http_auth_ldap_authenticate (conf=<optimized out>, ctx=0x2481890, r=0x24808b0) at /root/nginx-auth-ldap/ngx_http_auth_ldap_module.c:1861
#2  ngx_http_auth_ldap_handler (r=0x24808b0) at /root/nginx-auth-ldap/ngx_http_auth_ldap_module.c:1676
#3  0x0000000000437c1a in ngx_http_core_access_phase (r=<optimized out>, ph=0x2434b80) at src/http/ngx_http_core_module.c:1066
#4  0x00000000004338e6 in ngx_http_core_run_phases (r=r@entry=0x24808b0) at src/http/ngx_http_core_module.c:840
#5  0x000000000048243b in ngx_http_auth_ldap_wake_request (r=0x24808b0) at /root/nginx-auth-ldap/ngx_http_auth_ldap_module.c:1049
#6  0x00000000004825c8 in ngx_http_auth_ldap_reply_connection (c=c@entry=0x2434dc0, error_code=0, error_msg=<optimized out>) at /root/nginx-auth-ldap/ngx_http_auth_ldap_module.c:1127
#7  0x0000000000485ffe in ngx_http_auth_ldap_read_handler (rev=0x7fba5ffd7130) at /root/nginx-auth-ldap/ngx_http_auth_ldap_module.c:1445
#8  0x00000000004297f4 in ngx_epoll_process_events (cycle=0x2403520, timer=<optimized out>, flags=<optimized out>) at src/event/modules/ngx_epoll_module.c:822
#9  0x0000000000420a3c in ngx_process_events_and_timers (cycle=cycle@entry=0x2403520) at src/event/ngx_event.c:242
#10 0x000000000042782c in ngx_worker_process_cycle (cycle=cycle@entry=0x2403520, data=data@entry=0x1) at src/os/unix/ngx_process_cycle.c:753
#11 0x0000000000425f43 in ngx_spawn_process (cycle=cycle@entry=0x2403520, proc=proc@entry=0x427789 <ngx_worker_process_cycle>, data=data@entry=0x1, name=name@entry=0x48b206 "worker process", 
    respawn=respawn@entry=-3) at src/os/unix/ngx_process.c:198
#12 0x0000000000426af1 in ngx_start_worker_processes (cycle=cycle@entry=0x2403520, n=8, type=type@entry=-3) at src/os/unix/ngx_process_cycle.c:358
#13 0x0000000000428133 in ngx_master_process_cycle (cycle=cycle@entry=0x2403520) at src/os/unix/ngx_process_cycle.c:130
#14 0x000000000040842e in main (argc=<optimized out>, argv=<optimized out>) at src/core/nginx.c:359
henkwiedig commented 8 years ago

+1

0 0x0000000000482729 in ngx_http_auth_ldap_return_connection (c=0x2588900) at /opt/app/software/nginx/nginx-auth-ldap//ngx_http_auth_ldap_module.c:1103

1 0x00000000004854dc in ngx_http_auth_ldap_authenticate (conf=, ctx=0x2714878, r=0x2713a80) at /opt/app/software/nginx/nginx-auth-ldap//ngx_http_auth_ldap_module.c:1861

2 ngx_http_auth_ldap_handler (r=0x2713a80) at /opt/app/software/nginx/nginx-auth-ldap//ngx_http_auth_ldap_module.c:1676

3 0x0000000000437dd0 in ngx_http_core_access_phase (r=, ph=0x2588188) at src/http/ngx_http_core_module.c:1066

4 0x0000000000433b33 in ngx_http_core_run_phases (r=r@entry=0x2713a80) at src/http/ngx_http_core_module.c:840

5 0x000000000048266d in ngx_http_auth_ldap_wake_request (r=0x2713a80) at /opt/app/software/nginx/nginx-auth-ldap//ngx_http_auth_ldap_module.c:1049

6 0x00000000004827fa in ngx_http_auth_ldap_reply_connection (c=c@entry=0x2588900, error_code=0, error_msg=) at /opt/app/software/nginx/nginx-auth-ldap//ngx_http_auth_ldap_module.c:1127

7 0x0000000000486211 in ngx_http_auth_ldap_read_handler (rev=0x25906b0) at /opt/app/software/nginx/nginx-auth-ldap//ngx_http_auth_ldap_module.c:1445

8 0x0000000000429bb1 in ngx_epoll_process_events (cycle=0x253f7d0, timer=, flags=) at src/event/modules/ngx_epoll_module.c:822

9 0x0000000000420d6e in ngx_process_events_and_timers (cycle=cycle@entry=0x253f7d0) at src/event/ngx_event.c:242

10 0x0000000000427bd8 in ngx_worker_process_cycle (cycle=0x253f7d0, data=) at src/os/unix/ngx_process_cycle.c:753

11 0x00000000004262c2 in ngx_spawn_process (cycle=cycle@entry=0x253f7d0, proc=0x427b35 , data=0x0, name=0x48b23e "worker process", respawn=respawn@entry=0) at src/os/unix/ngx_process.c:198

12 0x00000000004288d9 in ngx_reap_children (cycle=0x253f7d0) at src/os/unix/ngx_process_cycle.c:621

13 ngx_master_process_cycle (cycle=cycle@entry=0x253f7d0) at src/os/unix/ngx_process_cycle.c:174

14 0x000000000040845a in main (argc=, argv=) at src/core/nginx.c:359

westlifezs commented 8 years ago

looks like I am having a similar issue here:

root@security-monkey-nginx-auth-4e8f:/tmp# gdb /usr/share/nginx/sbin/nginx /tmp/core.XXXX-nginx-auth-4e8f.nginx.10030 GNU gdb (Ubuntu 7.7.1-0ubuntu5~14.04.2) 7.7.1 Copyright (C) 2014 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later http://gnu.org/licenses/gpl.html This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-linux-gnu". Type "show configuration" for configuration details. For bug reporting instructions, please see: http://www.gnu.org/software/gdb/bugs/. Find the GDB manual and other documentation resources online at: http://www.gnu.org/software/gdb/documentation/. For help, type "help". Type "apropos word" to search for commands related to "word"... Reading symbols from /usr/share/nginx/sbin/nginx...done. [New LWP 10030] [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". Core was generated by `nginx: worker process '. Program terminated with signal SIGSEGV, Segmentation fault.

0 ngx_http_auth_ldap_authenticate (conf=0x1df47c8, ctx=0x1e39320, r=0x1e38340) at /root/nginx-auth-ldap//ngx_http_auth_ldap_module.c:1756

1756 ctx->server = ((ngx_http_auth_ldap_server_t **) conf->servers->elts)[ctx->server_index]; (gdb) backtrace full

0 ngx_http_auth_ldap_authenticate (conf=0x1df47c8, ctx=0x1e39320, r=0x1e38340) at /root/nginx-auth-ldap//ngx_http_auth_ldap_module.c:1756

No locals.

1 ngx_http_auth_ldap_handler (r=0x1e38340) at /root/nginx-auth-ldap//ngx_http_auth_ldap_module.c:1717

    alcf = 0x1df47c8
    ctx = 0x1e39320
    rc = <optimized out>

2 0x0000000000437404 in ngx_http_core_access_phase (r=, ph=0x1df8e38) at src/http/ngx_http_core_module.c:1114

    rc = <optimized out>
    clcf = <optimized out>

3 0x0000000000432c55 in ngx_http_core_run_phases (r=r@entry=0x1e38340) at src/http/ngx_http_core_module.c:888

    rc = <optimized out>
    ph = 0x1df8d78
    cmcf = <optimized out>

4 0x0000000000432d3d in ngx_http_handler (r=r@entry=0x1e38340) at src/http/ngx_http_core_module.c:871

    cmcf = <optimized out>

5 0x000000000043e574 in ngx_http_process_request (r=0x1e38340) at src/http/ngx_http_request.c:1828

    c = 0x7f28e9714250

6 0x000000000043ef66 in ngx_http_process_request_line (rev=0x1e03d58) at src/http/ngx_http_request.c:940

    n = <optimized out>
    rc = <optimized out>
    rv = <optimized out>
    host = {len = 4845998, data = 0x43f0f3 <ngx_http_wait_request_handler+323> "H\205\300H\211\003\017\204\344\376\377\377H\307E\020\360\353C"}
    c = 0x7f28e9714250
    r = 0x1e38340

7 0x0000000000420b58 in ngx_event_process_posted (cycle=cycle@entry=0x1dd2d30, posted=0x6dd880 ) at src/event/ngx_event_posted.c:40

    ev = 0x1e03d58

8 0x00000000004206c2 in ngx_process_events_and_timers (cycle=cycle@entry=0x1dd2d30) at src/event/ngx_event.c:276

    flags = <optimized out>
    timer = <optimized out>
    delta = <optimized out>

9 0x000000000042762a in ngx_worker_process_cycle (cycle=cycle@entry=0x1dd2d30, data=data@entry=0x2) at src/os/unix/ngx_process_cycle.c:807

    worker = 2
    i = <optimized out>
    c = <optimized out>

10 0x00000000004260d0 in ngx_spawn_process (cycle=cycle@entry=0x1dd2d30, proc=proc@entry=0x427570 , data=data@entry=0x2, name=name@entry=0x49f1ae "worker process", respawn=respawn@entry=-3) at src/os/unix/ngx_process.c:198

    on = 1
    pid = 0
    s = 2

11 0x000000000042785c in ngx_start_worker_processes (cycle=cycle@entry=0x1dd2d30, n=4, type=type@entry=-3) at src/os/unix/ngx_process_cycle.c:362

    i = 2
    ch = {command = 1, pid = 10029, slot = 1, fd = 10}

12 0x000000000042853c in ngx_master_process_cycle (cycle=cycle@entry=0x1dd2d30) at src/os/unix/ngx_process_cycle.c:136

---Type to continue, or q to quit---q Quit (gdb) q root@security-monkey-nginx-auth-4e8f:/tmp#

And my nginx installation is

root@security-monkey-nginx-auth-4e8f:/tmp# nginx -V nginx version: nginx/1.4.6 built by gcc 4.8.4 (Ubuntu 4.8.4-2ubuntu1~14.04.3) TLS SNI support enabled configure arguments: --with-cc-opt='-g -O2 -fstack-protector --param=ssp-buffer-size=4 -Wformat -Werror=format-security -D_FORTIFY_SOURCE=2' --with-ld-opt='-Wl,-Bsymbolic-functions -Wl,-z,relro' --prefix=/usr/share/nginx --conf-path=/etc/nginx/nginx.conf --http-log-path=/var/log/nginx/access.log --error-log-path=/var/log/nginx/error.log --lock-path=/var/lock/nginx.lock --pid-path=/run/nginx.pid --http-client-body-temp-path=/var/lib/nginx/body --http-fastcgi-temp-path=/var/lib/nginx/fastcgi --http-proxy-temp-path=/var/lib/nginx/proxy --http-scgi-temp-path=/var/lib/nginx/scgi --http-uwsgi-temp-path=/var/lib/nginx/uwsgi --with-debug --with-pcre-jit --with-ipv6 --with-http_ssl_module --with-http_stub_status_module --with-http_realip_module --with-http_addition_module --with-http_dav_module --with-http_geoip_module --with-http_gzip_static_module --with-http_image_filter_module --with-http_spdy_module --with-http_sub_module --with-http_xslt_module --with-mail --with-mail_ssl_module --add-module=/root/nginx-auth-ldap/ root@security-monkey-nginx-auth-4e8f:/tmp#

Is this related to any specific version or options built for nginx? Anyone knows any working specs with nginx-ldap-auth?

Thanks!

westlifezs commented 8 years ago

here is another core dump I encountered by using the latest nginx:

GNU gdb (Ubuntu 7.7.1-0ubuntu5~14.04.2) 7.7.1 Copyright (C) 2014 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later http://gnu.org/licenses/gpl.html This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-linux-gnu". Type "show configuration" for configuration details. For bug reporting instructions, please see: http://www.gnu.org/software/gdb/bugs/. Find the GDB manual and other documentation resources online at: http://www.gnu.org/software/gdb/documentation/. For help, type "help". Type "apropos word" to search for commands related to "word"... Reading symbols from /usr/share/nginx/sbin/nginx...done. [New LWP 9043] [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". Core was generated by `nginx: worker process '. Program terminated with signal SIGSEGV, Segmentation fault.

0 ngx_http_auth_ldap_authenticate (conf=0x271e340, ctx=0x27509e0, r=0x274f9d0) at /root/nginx-auth-ldap//ngx_http_auth_ldap_module.c:1756

1756 ctx->server = ((ngx_http_auth_ldap_server_t **) conf->servers->elts)[ctx->server_index]; (gdb) bt full

0 ngx_http_auth_ldap_authenticate (conf=0x271e340, ctx=0x27509e0, r=0x274f9d0) at /root/nginx-auth-ldap//ngx_http_auth_ldap_module.c:1756

No locals.

1 ngx_http_auth_ldap_handler (r=0x274f9d0) at /root/nginx-auth-ldap//ngx_http_auth_ldap_module.c:1717

    alcf = 0x271e340
    ctx = 0x27509e0
    rc = <optimized out>

2 0x000000000043c8e4 in ngx_http_core_access_phase (r=, ph=0x2722ca0) at src/http/ngx_http_core_module.c:1066

    rc = <optimized out>
    clcf = <optimized out>

3 0x0000000000438005 in ngx_http_core_run_phases (r=r@entry=0x274f9d0) at src/http/ngx_http_core_module.c:840

    rc = <optimized out>
    ph = 0x2722be0
    cmcf = <optimized out>

4 0x00000000004380f4 in ngx_http_handler (r=r@entry=0x274f9d0) at src/http/ngx_http_core_module.c:823

    cmcf = <optimized out>

5 0x0000000000443cb3 in ngx_http_process_request (r=0x274f9d0) at src/http/ngx_http_request.c:1911

    c = 0x7f21429e6298

6 0x0000000000444676 in ngx_http_process_request_line (rev=0x272ba80) at src/http/ngx_http_request.c:1022

    n = <optimized out>
    rc = <optimized out>
    rv = <optimized out>
    host = {len = 7313872, data = 0x400 <error: Cannot access memory at address 0x400>}
    c = 0x7f21429e6298
    r = 0x274f9d0

7 0x0000000000424c63 in ngx_event_process_posted (cycle=cycle@entry=0x26f5cc0, posted=0x6f99d0 ) at src/event/ngx_event_posted.c:33

    q = 0x272bad0
    ev = 0x272ba80

8 0x000000000042476b in ngx_process_events_and_timers (cycle=cycle@entry=0x26f5cc0) at src/event/ngx_event.c:259

    flags = <optimized out>
    timer = <optimized out>
    delta = <optimized out>

9 0x000000000042b285 in ngx_worker_process_cycle (cycle=cycle@entry=0x26f5cc0, data=data@entry=0x1) at src/os/unix/ngx_process_cycle.c:753

    worker = 1

10 0x0000000000429d50 in ngx_spawn_process (cycle=cycle@entry=0x26f5cc0, proc=0x42b240 , data=0x1, name=0x4b0b96 "worker process", respawn=respawn@entry=1) at src/os/unix/ngx_process.c:198

    on = 1
    pid = 0
    s = 1

11 0x000000000042c766 in ngx_reap_children (cycle=0x26f5cc0) at src/os/unix/ngx_process_cycle.c:621

    i = 1
    live = 1
    n = <optimized out>
    ch = {command = 2, pid = 9027, slot = 1, fd = -1}
    ccf = <optimized out>

12 ngx_master_process_cycle (cycle=cycle@entry=0x26f5cc0) at src/os/unix/ngx_process_cycle.c:174

    title = <optimized out>
    p = <optimized out>
    size = <optimized out>
    i = <optimized out>
    n = <optimized out>
    sigio = 0
    set = {__val = {0 <repeats 16 times>}}
    itv = {it_interval = {tv_sec = 40860415, tv_usec = 0}, it_value = {tv_sec = 0, tv_usec = 0}}
    live = <optimized out>
    delay = 0
    ls = <optimized out>
    ccf = 0x26f6e90

13 0x0000000000408fcf in main (argc=, argv=) at src/core/nginx.c:359

    b = <optimized out>
    log = 0x6f69a0 <ngx_log>
    i = <optimized out>
    cycle = 0x26f5cc0
    init_cycle = {conf_ctx = 0x0, pool = 0x26f5780, log = 0x6f69a0 <ngx_log>, new_log = {log_level = 0, file = 0x0, connection = 0, disk_full_time = 0, handler = 0x0, data = 0x0, writer = 0x0, wdata = 0x0, action = 0x0, next = 0x0}, log_use_stderr = 0, files = 0x0,
      free_connections = 0x0, free_connection_n = 0, reusable_connections_queue = {prev = 0x0, next = 0x0}, listening = {elts = 0x0, nelts = 0, size = 0, nalloc = 0, pool = 0x0}, paths = {elts = 0x0, nelts = 0, size = 0, nalloc = 0, pool = 0x0}, config_dump = {
        elts = 0x0, nelts = 0, size = 0, nalloc = 0, pool = 0x0}, open_files = {last = 0x0, part = {elts = 0x0, nelts = 0, next = 0x0}, size = 0, nalloc = 0, pool = 0x0}, shared_memory = {last = 0x0, part = {elts = 0x0, nelts = 0, next = 0x0}, size = 0, nalloc = 0,
        pool = 0x0}, connection_n = 0, files_n = 0, connections = 0x0, read_events = 0x0, write_events = 0x0, old_cycle = 0x0, conf_file = {len = 21, data = 0x4ac991 "/etc/nginx/nginx.conf"}, conf_param = {len = 0, data = 0x0}, conf_prefix = {len = 11,

---Type to continue, or q to quit--- data = 0x4ac991 "/etc/nginx/nginx.conf"}, prefix = {len = 17, data = 0x4ac97f "/usr/share/nginx/"}, lock_file = {len = 0, data = 0x0}, hostname = {len = 0, data = 0x0}} cd = ccf =

davidk81 commented 5 years ago

still experiencing same issue, has anyone ever solved this?

hailin84 commented 1 year ago

Still have the same issue after config max_down_retries. If no max_down_retries, it keeps log error message: http_auth_ldap: ldap_result() failed (-1: Can't contact LDAP server)