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[209.85.167.48]) by smtp.gmail.com with ESMTPSA id 137sm2784473lfi.77.2021.01.31.13.30.33 for (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 31 Jan 2021 13:30:33 -0800 (PST) Received: by mail-lf1-f48.google.com with SMTP id q12so20066762lfo.12 for ; Sun, 31 Jan 2021 13:30:33 -0800 (PST) X-Received: by 2002:a05:6512:2287:: with SMTP id f7mr6731550lfu.40.1612128632766; Sun, 31 Jan 2021 13:30:32 -0800 (PST) MIME-Version: 1.0 References: In-Reply-To: From: Linus Torvalds Date: Sun, 31 Jan 2021 13:30:16 -0800 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: [REGRESSION] x86/entry: TIF_SINGLESTEP handling is still broken To: Kyle Huey Cc: Thomas Gleixner , Andy Lutomirski , Gabriel Krisman Bertazi , open list , "Robert O'Callahan" Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Btw Kyle, do you have a good simple test-case for this? Clearly this is some weird special case use, and regular single-stepping works fine. Linus