K 10
svn:author
V 3
cem
K 8
svn:date
V 27
2019-03-06T22:56:49.212964Z
K 7
svn:log
V 438
FUSE: Prevent trivial panic

When open(2) was invoked against a FUSE filesystem with an unexpected flags
value (no O_RDONLY / O_RDWR / O_WRONLY), an assertion fired, causing panic.

For now, prevent the panic by rejecting such VOP_OPENs with EINVAL.

This is not considered the correct long term fix, but does prevent an
unprivileged denial-of-service.

PR:		236329
Reported by:	asomers
Reviewed by:	asomers
Sponsored by:	Dell EMC Isilon

END