K 10
svn:author
V 3
kib
K 8
svn:date
V 27
2009-05-14T10:54:57.603862Z
K 7
svn:log
V 459
Do not advance req->oldidx when sysctl_old_user returning an
error due to copyout failure or short buffer.

The later breaks the usermode iterators of the sysctl results that pack
arbitrary number of variable-sized structures. Iterator expects that
kernel filled exactly oldlen bytes, and tries to interpret half-filled
or garbage structure at the end of the buffer. In particular,
kinfo_getfile(3) segfaulted.

Reported and tested by:	pho
MFC after:	3 weeks

END