linux-kernel - Re: [PATCH] x86/sgx: Avoid returning NULL in __sgx_alloc_epc

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Message-ID: <20210319160920.GM6251@zn.tnic>
Date:   Fri, 19 Mar 2021 17:09:20 +0100
From:   Borislav Petkov <bp@...en8.de>
To:     Dave Hansen <dave.hansen@...el.com>
Cc:     Jarkko Sakkinen <jarkko@...nel.org>,
        Kai Huang <kai.huang@...el.com>, x86@...nel.org,
        linux-sgx@...r.kernel.org, dave.hansen@...ux.intel.com,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] x86/sgx: Avoid returning NULL in __sgx_alloc_epc_page()

On Fri, Mar 19, 2021 at 08:59:46AM -0700, Dave Hansen wrote:
> It's probably best to squash my patch in.  The uninitialized value could
> *theoretically* cause the search to start at the wrong node and then end
> before every node has been visited.  That could cause premature
> allocation failures.
> 
> But, I seriously doubt anyone will notice either way.

Yeah, I think too that we should be on the safe side, just in case.
Lemme redo the branch with the new changes and test.

Thx.

-- 
Regards/Gruss,
    Boris.

https://people.kernel.org/tglx/notes-about-netiquette