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Subject: [PULL 24/28] rust/pl011: Fix range checks for device ID accesses Date: Mon, 25 Nov 2024 15:21:01 +0000 Message-Id: <20241125152105.2100395-25-alex.bennee@linaro.org> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20241125152105.2100395-1-alex.bennee@linaro.org> References: <20241125152105.2100395-1-alex.bennee@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a00:1450:4864:20::32c; envelope-from=alex.bennee@linaro.org; helo=mail-wm1-x32c.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham 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: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1732548174836019100 From: Junjie Mao The peripheral and PrimeCell identification registers of pl011 are located = at offset 0xFE0 - 0xFFC. To check if a read falls to such registers, the C implementation checks if the offset-shifted-by-2 (not the offset itself) is= in the range 0x3F8 - 0x3FF. Use the same check in the Rust implementation. This fixes the timeout of the following avocado tests: * tests/avocado/boot_linux_console.py:BootLinuxConsole.test_arm_virt * tests/avocado/replay_kernel.py:ReplayKernelNormal.test_arm_virt * tests/avocado/replay_kernel.py:ReplayKernelNormal.test_arm_vexpressa9 Reported-by: Peter Maydell Signed-off-by: Junjie Mao Tested-by: Alex Benn=C3=A9e Reviewed-by: Alex Benn=C3=A9e Message-Id: Signed-off-by: Alex Benn=C3=A9e Message-Id: <20241121165806.476008-39-alex.bennee@linaro.org> diff --git a/rust/hw/char/pl011/src/device.rs b/rust/hw/char/pl011/src/devi= ce.rs index 2a85960b81..476cacc844 100644 --- a/rust/hw/char/pl011/src/device.rs +++ b/rust/hw/char/pl011/src/device.rs @@ -182,7 +182,7 @@ pub fn read(&mut self, offset: hwaddr, _size: c_uint) -= > std::ops::ControlFlow { + Err(v) if (0x3f8..0x400).contains(&(v >> 2)) =3D> { u64::from(self.device_id[(offset - 0xfe0) >> 2]) } Err(_) =3D> { --=20 2.39.5