pam_krb5 + xscreensaver

[Brian May <bam@snoopy.apana.org.au>]

Not a good combination. xscreensaver regularly seg faults, and
everytime it is different. Sometimes it crashes during a call to
pam_krb5, others it doesn't. 

#0  0x401cac83 in free () from /lib/libc.so.6
#1  0x401caa0d in free () from /lib/libc.so.6
#2  0x40241b41 in _dl_close () from /lib/libc.so.6
#3  0x4014b3c7 in dlopen () from /lib/libdl.so.2
#4  0x4000a135 in _dl_catch_error () from /lib/ld-linux.so.2
#5  0x4014b94e in dlerror () from /lib/libdl.so.2
#6  0x4014b3ed in dlclose () from /lib/libdl.so.2
#7  0x4014581f in _pam_free_handlers () from /lib/libpam.so.0
#8  0x40143b9b in pam_end () from /lib/libpam.so.0
#9  0x805a4a3 in XMapRaised ()
#10 0x805a1bc in XMapRaised ()
#11 0x8059ad9 in XMapRaised ()
#12 0x8059c14 in XMapRaised ()
#13 0x8059fd6 in XMapRaised ()
#14 0x804c961 in XMapRaised ()
#15 0x804cd4c in XMapRaised ()
#16 0x40193a52 in __libc_start_main () from /lib/libc.so.6

#0  0x401ca4f7 in malloc () from /lib/libc.so.6
#1  0x401ca0de in malloc () from /lib/libc.so.6
#2  0x400ada47 in XCreateGC () from /usr/X11R6/lib/libX11.so.6
#3  0x80528f8 in XMapRaised ()
#4  0x8058ac8 in XMapRaised ()
#5  0x8058465 in XMapRaised ()
#6  0x8059fab in XMapRaised ()
#7  0x804c961 in XMapRaised ()
#8  0x804cd4c in XMapRaised ()
#9  0x40193a52 in __libc_start_main () from /lib/libc.so.6

#0  0x401cacae in free () from /lib/libc.so.6
#1  0x401caa0d in free () from /lib/libc.so.6
#2  0x402e1099 in krb5_free_context () from /usr/lib/libkrb5.so.13
#3  0x4027da93 in cleanup_cache () from /lib/security/pam_krb5.so
#4  0x401442da in _pam_free_data () from /lib/libpam.so.0
#5  0x40143b92 in pam_end () from /lib/libpam.so.0
#6  0x805a4a3 in XMapRaised ()
#7  0x805a1bc in XMapRaised ()
#8  0x8059ad9 in XMapRaised ()
#9  0x8059c14 in XMapRaised ()
#10 0x8059fd6 in XMapRaised ()
#11 0x804c961 in XMapRaised ()
#12 0x804cd4c in XMapRaised ()
#13 0x40193a52 in __libc_start_main () from /lib/libc.so.6

I can't seem to reproduce this last case when pam_krb5.so has
the debug flag - in this case the first situation reccours.
Desired=Unknown/Install/Remove/Purge/Hold

| Status=Not/Installed/Config-files/Unpacked/Failed-config/Half-installed
|/ Err?=(none)/Hold/Reinst-required/X=both-problems (Status,Err: uppercase=bad)
||/ Name           Version        Description
+++-==============-==============-============================================
ii  xscreensaver   3.25-helix1    Automatic screensaver for X

I have also contacted the Helix author about this, as I am not sure if
it is a problem in xscreensaver or not.
-- 
Brian May <bam@snoopy.apana.org.au>