mips/kvm: fix ioctl error handling

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commit 0178fd7dcc upstream.

Returning directly whatever copy_to_user(...) or copy_from_user(...)
returns may not do the right thing if there's a pagefault:
copy_to_user/copy_from_user return the number of bytes not copied in
this case, but ioctls need to return -EFAULT instead.

Fix up kvm on mips to do
	return copy_to_user(...)) ?  -EFAULT : 0;
and
	return copy_from_user(...)) ?  -EFAULT : 0;

everywhere.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Michael S. Tsirkin 2016-02-28 17:35:59 +02:00 • committed by Greg Kroah-Hartman

parent 59dc7ab2e8

commit ce16d9cf04

1 changed files with 2 additions and 2 deletions

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arch/mips/kvm/mips.c

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