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[34.127.9.76]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-34f5fb7442asm5897745a91.15.2026.01.07.14.21.09 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 07 Jan 2026 14:21:10 -0800 (PST) Date: Wed, 7 Jan 2026 22:21:06 +0000 From: David Matlack To: Raghavendra Rao Ananta Cc: Alex Williamson , Alex Williamson , Josh Hilke , kvm@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2 1/6] vfio: selftests: Introduce snprintf_assert() Message-ID: References: <20251210181417.3677674-1-rananta@google.com> <20251210181417.3677674-2-rananta@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20251210181417.3677674-2-rananta@google.com> On 2025-12-10 06:14 PM, Raghavendra Rao Ananta wrote: > Introduce snprintf_assert() to protect the users of snprintf() to fail > if the requested operation was truncated due to buffer limits. VFIO > tests and libraries, including a new sysfs library that will be introduced > by an upcoming patch, rely quite heavily on snprintf()s to build PCI > sysfs paths. Having a protection against this will be helpful to prevent > false test failures. > > Signed-off-by: Raghavendra Rao Ananta Reviewed-by: David Matlack