diff options
Diffstat (limited to 'common/recipes-kernel/linux/linux-yocto-4.9.21/0083-kvm-x86-fix-KVM_XEN_HVM_CONFIG-ioctl.patch')
| -rw-r--r-- | common/recipes-kernel/linux/linux-yocto-4.9.21/0083-kvm-x86-fix-KVM_XEN_HVM_CONFIG-ioctl.patch | 57 |
1 files changed, 0 insertions, 57 deletions
diff --git a/common/recipes-kernel/linux/linux-yocto-4.9.21/0083-kvm-x86-fix-KVM_XEN_HVM_CONFIG-ioctl.patch b/common/recipes-kernel/linux/linux-yocto-4.9.21/0083-kvm-x86-fix-KVM_XEN_HVM_CONFIG-ioctl.patch deleted file mode 100644 index b4bec832..00000000 --- a/common/recipes-kernel/linux/linux-yocto-4.9.21/0083-kvm-x86-fix-KVM_XEN_HVM_CONFIG-ioctl.patch +++ /dev/null @@ -1,57 +0,0 @@ -From 91702980566c39210225154c2a8b1cef41942737 Mon Sep 17 00:00:00 2001 -From: Paolo Bonzini <pbonzini@redhat.com> -Date: Thu, 26 Oct 2017 15:45:47 +0200 -Subject: [PATCH 83/93] kvm: x86: fix KVM_XEN_HVM_CONFIG ioctl -MIME-Version: 1.0 -Content-Type: text/plain; charset=UTF-8 -Content-Transfer-Encoding: 8bit - -[ Upstream commit 51776043afa415435c7e4636204fbe4f7edc4501 ] - -This ioctl is obsolete (it was used by Xenner as far as I know) but -still let's not break it gratuitously...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> ---- - arch/x86/kvm/x86.c | 7 ++++--- - 1 file changed, 4 insertions(+), 3 deletions(-) - -diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c -index 27e6cf0..d7974fc 100644 ---- a/arch/x86/kvm/x86.c -+++ b/arch/x86/kvm/x86.c -@@ -4106,13 +4106,14 @@ long kvm_arch_vm_ioctl(struct file *filp, - mutex_unlock(&kvm->lock); - break; - case KVM_XEN_HVM_CONFIG: { -+ struct kvm_xen_hvm_config xhc; - r = -EFAULT; -- if (copy_from_user(&kvm->arch.xen_hvm_config, argp, -- sizeof(struct kvm_xen_hvm_config))) -+ if (copy_from_user(&xhc, argp, sizeof(xhc))) - goto out; - r = -EINVAL; -- if (kvm->arch.xen_hvm_config.flags) -+ if (xhc.flags) - goto out; -+ memcpy(&kvm->arch.xen_hvm_config, &xhc, sizeof(xhc)); - r = 0; - break; - } --- -2.7.4 - |