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Created attachment 591215 [details]
strace output of dump-utmp

Description of problem:
dump-utmp recieved SIGSEGV when trying to process /var/log/wtmp file.

Version-Release number of selected component (if applicable):
psacct-6.3.2-63.el6.ppc64

How reproducible:
always on ppc64

Steps to Reproduce:
1. run dump-utmp /var/log/wtmp 
  
Actual results:
Segmentation fault

Expected results:
correct output

Additional info:
gdb output:
# gdb dump-utmp
<snip>
Reading symbols from /usr/sbin/dump-utmp...Reading symbols from /usr/lib/debug/usr/sbin/dump-utmp.debug...done.
done.
(gdb) run /var/log/wtmp
Starting program: /usr/sbin/dump-utmp /var/log/wtmp

Program received signal SIGSEGV, Segmentation fault.
0x000000809e259834 in .strlen () from /lib64/libc.so.6
Missing separate debuginfos, use: debuginfo-install glibc-2.12-1.25.el6_1.3.ppc64
(gdb) t a a bt

Thread 1 (process 1159):
#0  0x000000809e259834 in .strlen () from /lib64/libc.so.6
#1  0x000000809e23b2b8 in ._IO_fputs () from /lib64/libc.so.6
#2  0x0000000010001cf8 in print_utmp_record (rec=0x10020070, out=0x809e3706a0) at utmp_rd.c:121
#3  0x0000000010001000 in main (argc=<value optimized out>, argv=0xffffffff188) at dump-utmp.c:113

I've already fixed the issue. Other architectures are affected too (no crash, but incorrect timestamps).