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AJvYcCVk+ZWdeyTMf6Gk4RajP5pWKqwme50CSNWmc5wLJbRZFOZlScilYs+vd0pKK36gkVUJTuCUugDRMy1xnsY=@vger.kernel.org X-Gm-Message-State: AOJu0YzHrTzjquUALzIpX+buA4Mz0q2A8BUnXO2c/Q51e/Bg4K8TP8bK mHl6VOTcXUvMZx/NASb42O8Gqc1dFOI9Dmk7WjXqtZBtn3K4ogNXDp88HpSpwpxfPg== X-Google-Smtp-Source: AGHT+IFXbp95YRShZyWDHTfWt39VhfR88gtKILTuI2qmMg5tUTqt0nYA/ekMozYHGJNsTbYe2UjU9BY= X-Received: from pgac16.prod.google.com ([2002:a05:6a02:2950:b0:af2:37c4:2ad]) (user=pcc job=prod-delivery.src-stubby-dispatcher) by 2002:a05:6a20:9e4a:b0:1f5:862b:a583 with SMTP id adf61e73a8af0-2009f78553bmr2229842637.34.1743206629156; Fri, 28 Mar 2025 17:03:49 -0700 (PDT) Date: Fri, 28 Mar 2025 17:03:35 -0700 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 X-Mailer: git-send-email 2.49.0.472.ge94155a9ec-goog Message-ID: <20250329000338.1031289-1-pcc@google.com> Subject: [PATCH v4 0/2] string: Add load_unaligned_zeropad() code path to sized_strscpy() From: Peter Collingbourne To: Alexander Viro , Christian Brauner , Jan Kara , Andrew Morton , Kees Cook , Andy Shevchenko , Andrey Konovalov , Catalin Marinas , Mark Rutland Cc: Peter Collingbourne , linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-hardening@vger.kernel.org, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="UTF-8" This series fixes an issue where strscpy() would sometimes trigger a false positive KASAN report with MTE. v4: - clarify commit message - improve comment v3: - simplify test case Peter Collingbourne (1): string: Add load_unaligned_zeropad() code path to sized_strscpy() Vincenzo Frascino (1): kasan: Add strscpy() test to trigger tag fault on arm64 lib/string.c | 13 ++++++++++--- mm/kasan/kasan_test_c.c | 16 ++++++++++++++++ 2 files changed, 26 insertions(+), 3 deletions(-) -- 2.49.0.472.ge94155a9ec-goog