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From:   Arvind Sankar <nivedita@alum.mit.edu>
Date:   Wed, 22 Jan 2020 17:52:30 -0500
To:     Arvind Sankar <nivedita@alum.mit.edu>
Cc:     "Luck, Tony" <tony.luck@intel.com>,
        Thomas Gleixner <tglx@linutronix.de>,
        Sean Christopherson <sean.j.christopherson@intel.com>,
        Peter Zijlstra <peterz@infradead.org>,
        Ingo Molnar <mingo@kernel.org>,
        Fenghua Yu <fenghua.yu@intel.com>,
        Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
        H Peter Anvin <hpa@zytor.com>,
        Ashok Raj <ashok.raj@intel.com>,
        Ravi V Shankar <ravi.v.shankar@intel.com>,
        linux-kernel <linux-kernel@vger.kernel.org>, x86 <x86@kernel.org>
Subject: Re: [PATCH v12] x86/split_lock: Enable split lock detection by kernel
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On Wed, Jan 22, 2020 at 05:42:51PM -0500, Arvind Sankar wrote:
> 
> Peter [2] called this a possible DOS vector. If userspace is malicious
> rather than buggy, couldn't it simply ignore SIGBUS?
> 
> [2] https://lore.kernel.org/lkml/20191121131522.GX5671@hirez.programming.kicks-ass.net/

Ignore this last bit, wasn't thinking right.