CVS commit: [netbsd-4-0] src/sys

["Jeff Rizzo" <riz%netbsd.org@localhost>]

Module Name:    src
Committed By:   riz
Date:           Wed Nov 14 20:15:37 UTC 2012

Modified Files:
        src/sys/kern [netbsd-4-0]: vfs_lookup.c
        src/sys/miscfs/genfs [netbsd-4-0]: layer_vnops.c

Log Message:
Pull up following revision(s) (requested by dholland in ticket #1466):
        sys/kern/vfs_lookup.c: revision 1.195
        sys/miscfs/genfs/layer_vnops.c: revision 1.51
In layer_lookup(), clear *vpp before returning EROFS, as otherwise a
stale value can be returned and this causes a diagnostic panic in
namei.
In relookup(), clear *vpp before calling VOP_LOOKUP, as is done in
lookup_once(), as an additional precautionary measure.
(in theory both of these fixes are not required together)
Should fix PR 47040.


To generate a diff of this commit:
cvs rdiff -u -r1.72.2.3 -r1.72.2.3.6.1 src/sys/kern/vfs_lookup.c
cvs rdiff -u -r1.28.2.2 -r1.28.2.2.6.1 src/sys/miscfs/genfs/layer_vnops.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.