DF-5026 / run_fixed

DF-5026 / run_fixed_ab.log
builds OK:
-rw-r--r--  1 root  wheel  6648 Sep 26 05:10 /tmp/ab6/fixed/df5026.ko
-rw-r--r--  1 root  wheel  6504 Sep 26 05:10 /tmp/ab6/orig/df5026.ko
== ORIGINAL pattern: offline then read ==
offline: pread@3145728 r=512 errno=0(ok) — returned only after the bio was completed externally
wedge pid: 3036
   PID STAT   WCHAN
  3036 D2     physstr 
   PID STAT   WCHAN
  3036 D2     physstr 
SURVIVES SIGKILL (original pattern)
poke: pread@1048576 r=512 errno=0(ok) — returned only after the bio was completed externally
   PID STAT   WCHAN
gone after poke (original pattern)
== FIXED pattern: offline then read ==
offline: pread@3145728 r=512 errno=0(ok) — returned only after the bio was completed externally
wedge: pread@2097152 r=-1 errno=5(Input/output error) — returned only after the bio was completed externally
wedge returned immediately (fixed pattern)
no wedge process remains (fixed pattern)
== A/B complete, guest clean ==