On 9/14/20 8:37 AM, Vitaly Kuznetsov wrote:
> The save and ctl pointers are passed uninitialized to kfree() when
> svm_set_nested_state() follows the 'goto out_set_gif' path. While
> the issue could've been fixed by initializing these on-stack varialbles
> to NULL, it seems preferable to eliminate 'out_set_gif' label completely
> as it is not actually a failure path and duplicating a single svm_set_gif()
> call doesn't look too bad.
>
> Fixes: 6ccbd29ade0d ("KVM: SVM: nested: Don't allocate VMCB structures on
> stack")
> Addresses-Coverity: ("Uninitialized pointer read")
> Reported-by: Dan Carpenter <[email protected]>
> Reported-by: Joerg Roedel <[email protected]>
> Reported-by: Colin King <[email protected]>
> Signed-off-by: Vitaly Kuznetsov <[email protected]>
Tested-by: Tom Lendacky <[email protected]>
