[Crash-utility] [PATCH v3 0/2] Fix KASLR problem on sadump

[Dave Anderson]

----- Original Message -----
> Hi,
> 
> I know support for guessing the KASLR offset for kdump/diskimages was
> deliberately dropped from this patchset, because upstream was also working on
> the vmcoreinfo device, but I think having that would be *really* useful.
> 
> The vmcoreinfo device solution requires explicit support in the virtualization
> Hosts, and it'll take a while until its presence has been generalized among
> products and users. Meanwhile, we already have VMs with KASLR-enabled
> kernels.
> 
> So I'd like to ask if a patchset extending the current state of KASLR offset
> guessing for sadump to kdump/diskimages would be considered for merging.
> 
> Thanks,
> Sergio.
> 

You can always post a patch and it will get consideration.

That being said, the original patch would no longer be applicable given
the recently-introduced support for x86_64 KPTI and 5-level page-tables.  

And BTW, I thought the SADUMP solution was accurate, i.e., not "offset guessing"?

I just ask that the patch be reasonably segregated, so that its code only runs in 
the case of virsh-generated dumpfiles that do not contain the VMCOREINFO note.

Dave