New test failures in fs/vfs/t_io

[Andreas Gustafsson <gson%gson.org@localhost>]

Hi all,

Fourteen test cases of the fs/vfs/t_io test started failing on the TNF
testbed during a recent period when the build and/or install were
broken, between 2015-03-28 16:13:38 and 2015-03-29 19:35:58 UTC.

The tests are failing with backtraces similar to this one:

  Core was generated by `t_io'.
  Program terminated with signal SIGSEGV, Segmentation fault.
  #0  0xbb8b452a in rumpns_memcpy () from /usr/lib/librump.so.0
  #0  0xbb8b452a in rumpns_memcpy () from /usr/lib/librump.so.0
  #1  0xbb8b0c06 in rumpns_kcopy () from /usr/lib/librump.so.0
  #2  0xbb883bec in rumpns_copyout_vmspace () from /usr/lib/librump.so.0
  #3  0xbb883cf8 in rumpns_uiomove () from /usr/lib/librump.so.0
  #4  0xbb95a7da in rumpns_ubc_uiomove () from /usr/lib/librumpvfs.so.0
  #5  0xbbba08d3 in rumpns_ffs_read () from /usr/lib/librumpfs_ffs.so.0
  #6  0xbb86dcfb in rumpns_VOP_READ () from /usr/lib/librump.so.0
  #7  0xbb9402c0 in ?? () from /usr/lib/librumpvfs.so.0
  #8  0xbb856aaa in rumpns_dofileread () from /usr/lib/librump.so.0
  #9  0xbb856b72 in rumpns_sys_read () from /usr/lib/librump.so.0
  #10 0xbb8b58fd in rump_syscall () from /usr/lib/librump.so.0
  #11 0xbb8a8bd0 in rump___sysimpl_read () from /usr/lib/librump.so.0
  #12 0x08053de6 in read_fault.isra ()
  #13 0x08058a22 in atfu_ffs_read_fault_body ()
  #14 0xbb669c97 in atf_tc_run () from /usr/lib/libatf-c.so.0
  #15 0xbb666bef in atf_tp_run () from /usr/lib/libatf-c.so.0
  #16 0xbb6666a9 in atf_tp_main () from /usr/lib/libatf-c.so.0
  #17 0x0806f7bc in main ()
  Stack trace complete

Here are links to to the first and last commit of the time period
in case:

  http://releng.netbsd.org/b5reports/i386/commits-2015.03.html#2015.03.28.16.13.38
  http://releng.netbsd.org/b5reports/i386/commits-2015.03.html#2015.03.29.19.35.58

There were commits by agc, chopps, jmcneill, macallan, matt, maxv,
msaitoh, ozaki-r, and riastradh.  Please check your commits to see if
they could be the cause.
-- 
Andreas Gustafsson, gson%gson.org@localhost