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| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-02-11 09:26:45 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-02-11 09:26:45 +0100 |
| commit | c744ca39f28f9a1e94a62ba02483619925d25ddc (patch) | |
| tree | bfcd445d31c88130cb0833675e2c7ea1c40f47e0 /arch/x86/kvm/x86.c | |
| parent | f233ea4327d7b6f67a224822fdc9241a9f4e4b59 (diff) | |
| parent | d13937116f1e82bf508a6325111b322c30c85eb9 (diff) | |
Merge 5.0-rc6 into tty-next
We need the tty fixes in here for other patches to be based on.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/x86/kvm/x86.c')
| -rw-r--r-- | arch/x86/kvm/x86.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 3d27206f6c01..e67ecf25e690 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -5116,6 +5116,13 @@ int kvm_read_guest_virt(struct kvm_vcpu *vcpu, { u32 access = (kvm_x86_ops->get_cpl(vcpu) == 3) ? PFERR_USER_MASK : 0; + /* + * FIXME: this should call handle_emulation_failure if X86EMUL_IO_NEEDED + * is returned, but our callers are not ready for that and they blindly + * call kvm_inject_page_fault. Ensure that they at least do not leak + * uninitialized kernel stack memory into cr2 and error code. + */ + memset(exception, 0, sizeof(*exception)); return kvm_read_guest_virt_helper(addr, val, bytes, vcpu, access, exception); } |