Re: [Qemu-devel] [PATCH v1] exec: handle NULL pointer in flatview_read_continue

[Paolo Bonzini]

On 09/08/2018 16:24, Olaf Hering wrote:
> Am Thu,  9 Aug 2018 16:14:03 +0200 schrieb Olaf Hering
> <address@hidden>:
> 
>> The codepaths behind qemu_ram_ptr_length can return NULL.
>
> While that might be a bug by itself, the question is why in that case
> no memset(buf, 0xff, l) is done?

If no RAM is allocated (i.e. xen_map_cache will return NULL), however,
the memory should not be registered as RAM with the memory API.  So I
think the bug is in Xen code.

Paolo

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