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[174.21.75.75]) by smtp.gmail.com with ESMTPSA id e11sm53837pjh.14.2022.01.04.10.12.16 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 04 Jan 2022 10:12:16 -0800 (PST) Subject: Re: [PULL 02/15] linux-user: Move syscall error detection into safe_syscall_base To: Laurent Vivier References: <20211220202500.111897-1-richard.henderson@linaro.org> <20211220202500.111897-3-richard.henderson@linaro.org> <69f6a9fc-d2b3-661c-38d7-1991b34c55ca@vivier.eu> From: Richard Henderson Message-ID: <28475541-89ef-031e-adf5-b1c2fef97195@linaro.org> Date: Tue, 4 Jan 2022 10:12:15 -0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.14.0 MIME-Version: 1.0 In-Reply-To: <69f6a9fc-d2b3-661c-38d7-1991b34c55ca@vivier.eu> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 8bit X-Host-Lookup-Failed: Reverse DNS lookup failed for 2607:f8b0:4864:20::62f (failed) Received-SPF: pass client-ip=2607:f8b0:4864:20::62f; envelope-from=richard.henderson@linaro.org; helo=mail-pl1-x62f.google.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, NICE_REPLY_A=-3.354, RCVD_IN_DNSWL_NONE=-0.0001, RDNS_NONE=0.793, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: qemu-devel@nongnu.org, Warner Losh Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On 1/4/22 5:51 AM, Laurent Vivier wrote: > This patch breaks command execution in bash command line interface: > > - if I run "chroot chroot/powerpc/jessie ls", it works > > - if I run "echo ls |  chroot chroot/powerpc/jessie", it hangs > > - if I run "chroot chroot/powerpc/jessie bash invalid_command", >   it does nothing whereas it should return "bash: invalid_command: No such file or > directory". Thanks. I've reproduced this (or something close enough): Host: openat(AT_FDCWD, "asdf", O_RDONLY) = -1 ENOENT (No such file or directory) Guest: 502138 open("asdf",O_RDONLY|O_LARGEFILE) = 100 r~