More on double free or corruption errors

Tue Apr 24 20:38:19 CEST 2007

I strongly suspect its a Fedora problem, not a Freeradius 
problem. (Or else I made a boo-boo configuring the OS)

Alan DeKok replied to matthew zeier:

 >  Let me clear: I cannot reproduce this problem here.
 >  No one else has
 > seen the same problem.

May or may not be relevant, but I've got two supposedly 
identical Fedora 6 machines, one gets a similar error, the other 
doesn't!.

Both upgraded with yum to current level, followed by manual 
install and configure of Freeradius 1.1.5 - I cut and pasted the 
commands from one machine to the other and I FTPed the files 
including ones I modified. (And the one it works on is the 
SECOND one I installed, so its not a failure to copy correctly!)

I think there must be some difference in my 
/usr/local/lib/libltdl.so.3.1.4 - they are slightly different 
sizes. I have no idea why, I used the same commands to install 
both systems. I will compare them.

Just in case it means anything to anyone I attach the command 
output, but as I said my guess is its a Fedora problem

[root at ficus raddb]# radiusd -v
radiusd: FreeRADIUS Version 1.1.5, for host i686-pc-linux-gnu, 
built on Mar  9 2007 at 13:16:16
Copyright (C) 2000-2006 The FreeRADIUS server project.

[root at ficus raddb]# radiusd -X
Starting - reading configuration files ...
reread_config:  reading radiusd.conf
Config:   including file: /usr/local/etc/raddb/proxy.conf
Config:   including file: /usr/local/etc/raddb/clients.conf
Config:   including file: /usr/local/etc/raddb/snmp.conf
Config:   including file: /usr/local/etc/raddb/eap.conf
Config:   including file: /usr/local/etc/raddb/sql.conf
  main: prefix = "/usr/local"
  main: localstatedir = "/usr/local/var"
  main: logdir = "/usr/local/var/log/radius"
  main: libdir = "/usr/local/lib"
  main: radacctdir = "/usr/local/var/log/radius/radacct"
  main: hostname_lookups = no
  main: max_request_time = 30
  main: cleanup_delay = 5
  main: max_requests = 1024
  main: delete_blocked_requests = 0
  main: port = 0
  main: allow_core_dumps = no
  main: log_stripped_names = no
  main: log_file = "/usr/local/var/log/radius/radius.log"
  main: log_auth = no
  main: log_auth_badpass = no
  main: log_auth_goodpass = no
  main: pidfile = "/usr/local/var/run/radiusd/radiusd.pid"
  main: user = "(null)"
  main: group = "(null)"
  main: usercollide = no
  main: lower_user = "no"
  main: lower_pass = "no"
  main: nospace_user = "no"
  main: nospace_pass = "no"
  main: checkrad = "/usr/local/sbin/checkrad"
  main: proxy_requests = yes
  proxy: retry_delay = 5
  proxy: retry_count = 3
  proxy: synchronous = no
  proxy: default_fallback = yes
  proxy: dead_time = 120
  proxy: post_proxy_authorize = no
  proxy: wake_all_if_all_dead = no
  security: max_attributes = 200
  security: reject_delay = 1
--More--*** glibc detected *** radiusd: double free or 
corruption (fasttop): 0x81029498 ***
======= Backtrace: =========
/lib/libc.so.6[0x24b09d]
/lib/libc.so.6(cfree+0x90)[0x24e6f0]
/usr/local/lib/libltdl.so.3[0x14151b]
/usr/local/lib/libltdl.so.3(lt_dlopenext+0xbe)[0x141eae]
radiusd(find_module_instance+0x317)[0x8000cbb7]
radiusd(setup_modules+0x1d8)[0x8000d168]
radiusd(main+0x45c)[0x8001079c]
/lib/libc.so.6(__libc_start_main+0xdc)[0x1faf2c]
radiusd[0x80004771]
======= Memory map: ========
00110000-00123000 r-xp 00000000 fd:00 13959203 
/lib/libpthread-2.5.so
00123000-00124000 r-xp 00012000 fd:00 13959203 
/lib/libpthread-2.5.so
00124000-00125000 rwxp 00013000 fd:00 13959203 
/lib/libpthread-2.5.so
00125000-00127000 rwxp 00125000 00:00 0
00127000-0013c000 r-xp 00000000 fd:00 13087333 
/usr/local/lib/libradius-1.1.5.so
0013c000-0013d000 rwxp 00014000 fd:00 13087333 
/usr/local/lib/libradius-1.1.5.so
0013d000-0013e000 rwxp 0013d000 00:00 0
0013e000-00143000 r-xp 00000000 fd:00 13086902 
/usr/local/lib/libltdl.so.3.1.4
00143000-00144000 rwxp 00004000 fd:00 13086902 
/usr/local/lib/libltdl.so.3.1.4
00144000-0014b000 r-xp 00000000 fd:00 13087742 
/usr/lib/libkrb5support.so.0.1
0014b000-0014c000 rwxp 00006000 fd:00 13087742 
/usr/lib/libkrb5support.so.0.1
0014e000-0014f000 r-xp 0014e000 00:00 0          [vdso]
0014f000-00161000 r-xp 00000000 fd:00 13082790 
/usr/lib/libz.so.1.2.3
00161000-00162000 rwxp 00011000 fd:00 13082790 
/usr/lib/libz.so.1.2.3
00162000-0016b000 r-xp 00000000 fd:00 13959208 
/lib/libnss_files-2.5.so
0016b000-0016c000 r-xp 00008000 fd:00 13959208 
/lib/libnss_files-2.5.so
0016c000-0016d000 rwxp 00009000 fd:00 13959208 
/lib/libnss_files-2.5.so
0016d000-00171000 r-xp 00000000 fd:00 13959206 
/lib/libnss_dns-2.5.so
00171000-00172000 r-xp 00003000 fd:00 13959206 
/lib/libnss_dns-2.5.so
00172000-00173000 rwxp 00004000 fd:00 13959206 
/lib/libnss_dns-2.5.so
00173000-0017e000 r-xp 00000000 fd:00 13959199 
/lib/libgcc_s-4.1.1-20070105.so.1
0017e000-0017f000 rwxp 0000a000 fd:00 13959199 
/lib/libgcc_s-4.1.1-20070105.so.1
001a0000-001e1000 r-xp 00000000 fd:00 13959361 
/lib/libssl.so.0.9.8b
001e1000-001e5000 rwxp 00040000 fd:00 13959361 
/lib/libssl.so.0.9.8b
001e5000-0031c000 r-xp 00000000 fd:00 13959186   /lib/libc-2.5.so
0031c000-0031e000 r-xp 00137000 fd:00 13959186   /lib/libc-2.5.so
0031e000-0031f000 rwxp 00139000 fd:00 13959186   /lib/libc-2.5.so
0031f000-00322000 rwxp 0031f000 00:00 0
00322000-003a8000 r-xp 00000000 fd:00 13100407 
/usr/lib/libkrb5.so.3.2
003a8000-003aa000 rwxp 00086000 fd:00 13100407 
/usr/lib/libkrb5.so.3.2
00474000-0048d000 r-xp 00000000 fd:00 13959170   /lib/ld-2.5.so
0048d000-0048e000 r-xp 00018000 fd:00 13959170   /lib/ld-2.5.so
0048e000-0048f000 rwxp 00019000 fd:00 13959170   /lib/ld-2.5.so
00710000-0082c000 r-xp 00000000 fd:00 13959247 
/lib/libcrypto.so.0.9.8b
0082c000-0083e000 rwxp 0011c000 fd:00 13959247 
/lib/libcrypto.so.0.9.8b
0083e000-00842000 rwxp 0083e000 00:00 0
008ec000-00911000 r-xp 00000000 fd:00 13100406 
/usr/lib/libk5crypto.so.3.0
00911000-00912000 rwxp 00025000 fd:00 13100406 
/usr/lib/libk5crypto.so.3.0
00a47000-00a56000 r-xp 00000000 fd:00 13959217 
/lib/libresolv-2.5.so
00a56000-00a57000 r-xp 0000e000 fd:00 13959217 
/lib/libresolv-2.5.so
00a57000-00a58000 rwxp 0000f000 fd:00 13959217 
/lib/libresolv-2.5.so
00a58000-00a5a000 rwxp 00a58000 00:00 0
00c7a000-00ca4000 r-xp 00000000 fd:00 13100408 
/usr/lib/libgssapi_krb5.so.2.2
00ca4000-00ca5000 rwxp 00029000 fd:00 13100408 
/usr/lib/libgssapi_krb5.so.2.2
00cf1000-00cf3000 r-xp 00000000 fd:00 13099224 
/usr/local/lib/rlm_exec-1.1.5.so
00cf3000-00cf4000 rwxp 00001000 fd:00 13099224 
/usr/local/lib/rlm_exec-1.1.5.so
00d1b000-00d2e000 r-xp 00000000 fd:00 13959209   /lib/libnsl-2.5.so
00d2e000-00d2f000 r-xp 00012000 fd:00 13959209   /lib/libnsl-2.5.so
00d2f000-00d30000 rwxp 00013000 fd:00 13959209   /lib/libnsl-2.5.so
00d30000-00d32000 rwxp 00d30000 00:00 0
00de4000-00de6000 r-xp 00000000 fd:00 13959245 
/lib/libcom_err.so.2.1
00de6000-00de7000 rwxp 00001000 fd:00 13959245 
/lib/libcom_err.so.2.1
00e98000-00e9a000 r-xp 00000000 fd:00 13959193   /lib/libdl-2.5.so
00e9a000-00e9b000 r-xp 00001000 fd:00 13959193   /lib/libdl-2.5.so
00e9b000-00e9c000 rwxp 00002000 fd:00 13959193   /lib/libdl-2.5.so
00e9c000-00ea1000 r-xp 00000000 fd:00 13959219 
/lib/libcrypt-2.5.so
00ea1000-00ea2000 r-xp 00004000 fd:00 13959219 
/lib/libcrypt-2.5.so
00ea2000-00ea3000 rwxp 00005000 fd:00 13959219 
/lib/libcrypt-2.5.so
00ea3000-00eca000 rwxp 00ea3000 00:00 0
80000000-8001d000 r-xp 00000000 fd:00 13100199 
/usr/local/sbin/radiusd
8001d000-8001e000 rw-p 0001d000 fd:00 13100199 
/usr/local/sbin/radiusd
8001e000-8001f000 rw-p 8001e000 00:00 0
80f4e000-81035000 rw-p 80f4e000 00:00 0
b7e00000-b7e21000 rw-p b7e00000 00:00 0
b7e21000-b7f00000 ---p b7e21000 00:00 0
b7fbe000-b7fc2000 rw-p b7fbe000 00:00 0
b7fd0000-b7fd2000 rw-p b7fd0000 00:00 0
bf81b000-bf84c000 rw-p bf81b000 00:00 0          [stack]