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SubjectRe: [PATCH v25 07/21] x86/sgx: Enumerate and track EPC sections
On Wed, Feb 05, 2020 at 11:57:00AM -0800, Sean Christopherson wrote:
> > + ret = __eremove(sgx_epc_addr(page));
> > + if (!WARN_ON_ONCE(ret)) {
>
> Sadly, this WARN can fire after kexec() on systems with multiple EPC
> sections if the SECS has child pages in another section.

What causes this?

/Jarkko

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