kern/49033: fs/vfs/t_vnops/udf_lookup_complex test case randomly fails

[gson%gson.org@localhost (Andreas Gustafsson)]

>Number:         49033
>Category:       kern
>Synopsis:       fs/vfs/t_vnops/udf_lookup_complex test case randomly fails
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Fri Jul 25 10:55:00 +0000 2014
>Originator:     Andreas Gustafsson
>Release:        NetBSD-current
>Organization:

>Environment:
System: NetBSD
Architecture: i386
Machine: i386
>Description:

On the TNF testbed, the fs/vfs/t_vnops/udf_lookup_complex test case
has failed in about half the runs ever since it was added, with the
error

  t_vnops.c:100: memcmp(&sb1, &sb2, sizeof(sb1)) == 0 not met

This affects all three architectures being tested (i386, amd64, sparc).
Logs from a recent occurrence are at:

  
http://releng.netbsd.org/b5reports/i386/build/2014.07.24.13.22.49/test.html#fs_vfs_t_vnops_udf_lookup_complex

>How-To-Repeat:

Run the ATF tests.

>Fix: