Re: [PATCH 0/2] fix userspace access on arm64 for linux 5.4

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On Mon, Mar 29, 2021 at 01:56:53PM +0300, Zidenberg, Tsahi wrote:
> 
> arm64 access to userspace addresses in bpf and kprobes is broken,
> because kernelspace address accessors are always used, and won't work
> for userspace.

What does not work exactly?

What is broken that is fixed in these changes?  I can't seem to
understand that as it feels like bpf and kprobes works on 5.4.y unless
something broke it?

confused,

greg k-h



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