rawhide report: 20050913 changes

[John Ellson]

Tom London wrote:

>On 9/14/05, John Ellson <ellson at research.att.com> wrote:
>  
>
>>1555  works for me on x86_64, so long as I set selinux=0, the same as
>>for i686.
>>
>>John
>>
>>    
>>
>Believe this is a known problem, and a fix is to be in tomorrow's tree.
>
>If you are in a hurry, you can try uncommenting the 'disable=1' line
>in /etc/mcs.conf and rebooting.  (Be prepared for relabeling....)
>
>tom
>  
>
I'm trying kernel 1555 and the /etc/mcs.conf change.

It worked, mostly.   (1 x86_64, 1 i686 SMP, 5 i686 UP)

Just one of my i686 UP boxes is running with enforcing targeted policy.
On just that box I'm having problems with "su - user" segfaulting when 
issued by root.


===========================================
root at samadams:~# su - reb
Segmentation fault

root at samadams:~# strace su - reb
...
open("/etc/mcs.conf", O_RDONLY|O_LARGEFILE) = 4
fstat64(4, {st_mode=S_IFREG|0644, st_size=596, ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 
0) = 0xb7f23000
read(4, "#\n# Multiple Category System tra"..., 4096) = 596
read(4, "", 4096)                       = 0
close(4)                                = 0
munmap(0xb7f23000, 4096)                = 0
open("/lib/security/$ISA/pam_stack.so", O_RDONLY) = -1 ENOENT (No such 
file or directory)
open("/lib/security/../../lib/security/pam_stack.so", O_RDONLY) = 4
read(4, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0000\n\0"..., 
512) = 512
fstat64(4, {st_mode=S_IFREG|0755, st_size=11180, ...}) = 0
--- SIGSEGV (Segmentation fault) @ 0 (0) ---
+++ killed by SIGSEGV +++
Process 2216 detached
root at samadams:~#
============================================

It looks to be related, but I think I'll verify that it still exists after
the official fixes tomorrow before I bugzilla it.


John