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author | Paolo Bonzini <pbonzini@redhat.com> | 2017-10-26 16:45:47 +0300 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-04-26 12:02:03 +0300 |
commit | 8e40eae185f85426d9d6d667f2e55aa721b84e0d (patch) | |
tree | 50f1d764a504d80f4a1cb3d83aae088851689788 /include/rdma | |
parent | 3f3017fa1540cf5eb6bd6af1f76f76a831c99652 (diff) | |
download | linux-8e40eae185f85426d9d6d667f2e55aa721b84e0d.tar.xz |
kvm: x86: fix KVM_XEN_HVM_CONFIG ioctl
[ Upstream commit 51776043afa415435c7e4636204fbe4f7edc4501 ]
This ioctl is obsolete (it was used by Xenner as far as I know) but
still let's not break it gratuitously... Its handler is copying
directly into struct kvm. Go through a bounce buffer instead, with
the added benefit that we can actually do something useful with the
flags argument---the previous code was exiting with -EINVAL but still
doing the copy.
This technically is a userspace ABI breakage, but since no one should be
using the ioctl, it's a good occasion to see if someone actually
complains.
Cc: kernel-hardening@lists.openwall.com
Cc: Kees Cook <keescook@chromium.org>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/rdma')
0 files changed, 0 insertions, 0 deletions