Re: top Segmentation faulting on 8.0p2 amd64 (nss_ldapd problem?)

[Harald Schmalzbauer]

Mikolaj Golub schrieb am 22.01.2010 23:26 (localtime):

On Wed, 20 Jan 2010 08:06:23 +0100 Harald Schmalzbauer wrote:

Dear all,

I have no idea why top crashes with segmentation fault on my amd64
machine running FreeBSD 8.0-RELEASE-p2.
If someone wants to have a loot at the core dump:
http://www.schmalzbauer.de/downloads/top.core

core file is useless without binary and libraries. So it is better to run gdb
on your host, produce backtrace and post here:

gdb /usr/bin/top top.core
bt

And sure a backtrace from the top built with -g would be much better.

cd /usr/src/usr.bin/top
CFLAGS=-g make

Unfortunately nss_ldap seems to be the culprit.

gdb /usr/bin/top top.core
GNU gdb 6.1.1 [FreeBSD]
Copyright 2004 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are

Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as "amd64-marcel-freebsd"...
Core was generated by `top'.
Program terminated with signal 11, Segmentation fault.
Reading symbols from /lib/libncurses.so.8...done.
Loaded symbols for /lib/libncurses.so.8
Reading symbols from /lib/libm.so.5...done.
Loaded symbols for /lib/libm.so.5
Reading symbols from /lib/libkvm.so.5...done.
Loaded symbols for /lib/libkvm.so.5
Reading symbols from /lib/libc.so.7...done.
Loaded symbols for /lib/libc.so.7
Reading symbols from /usr/local/lib/nss_ldap.so.1...done.
Loaded symbols for /usr/local/lib/nss_ldap.so.1
Reading symbols from /libexec/ld-elf.so.1...done.
Loaded symbols for /libexec/ld-elf.so.1
bt:

#2  0x00000008009ffc54 in __nss_compat_getpwent_r () from /lib/libc.so.7
#3  0x0000000800a84a3d in nsdispatch () from /lib/libc.so.7
#4  0x0000000800a50976 in getpwent_r () from /lib/libc.so.7
#5  0x0000000800a50596 in sysctlbyname () from /lib/libc.so.7

    at /usr/src/usr.bin/top/machine.c:257
#7  0x0000000000407a10 in main (argc=1, argv=0x7fffffffeb08)
    at /usr/src/usr.bin/top/../../contrib/top/top.c:458

I'm using nss_ldapd-0.7.2 and there's no way to live without ldap...

Any help highly appreciated!

Thanks,

-Harry

welcome to change it and/or distribute copies of it under certain conditions. #0 0x0000000800d08403 in __nss_compat_gethostbyname () from /usr/local/lib/nss_ldap.so.1 #0 0x0000000800d08403 in __nss_compat_gethostbyname () from /usr/local/lib/nss_ldap.so.1 #1 0x0000000800d0606f in _nss_ldap_getpwent_r () from /usr/local/lib/nss_ldap.so.1 #6 0x0000000000406c6d in machine_init (statics=0x7fffffffea30, do_unames=1 '\001')

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