Re: [PATCH] ioreq: don't (deliberately) crash Dom0

2021-02-01 Thread Jan Beulich
On 01.02.2021 16:37, Andrew Cooper wrote: > On 01/02/2021 15:22, Jan Beulich wrote: >> We consider this error path of hvm_alloc_ioreq_mfn() to not be possible >> to be taken, or otherwise to indicate abuse or a bug somewhere. If there >> is abuse of some kind, crashing Dom0 here would mean a system

Re: [PATCH] ioreq: don't (deliberately) crash Dom0

2021-02-01 Thread Andrew Cooper
On 01/02/2021 15:22, Jan Beulich wrote: > We consider this error path of hvm_alloc_ioreq_mfn() to not be possible > to be taken, or otherwise to indicate abuse or a bug somewhere. If there > is abuse of some kind, crashing Dom0 here would mean a system-wide DoS. > Only crash the emulator domain if