linux-kernel - Re: [PATCH v2 1/6] vfio: selftests: Introduce snprintf

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Message-ID: <aV7cUiNj7xr1NCgb@google.com>
Date: Wed, 7 Jan 2026 22:21:06 +0000
From: David Matlack <dmatlack@...gle.com>
To: Raghavendra Rao Ananta <rananta@...gle.com>
Cc: Alex Williamson <alex@...zbot.org>,
	Alex Williamson <alex.williamson@...hat.com>,
	Josh Hilke <jrhilke@...gle.com>, kvm@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 1/6] vfio: selftests: Introduce snprintf_assert()

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 <rananta@...gle.com>

Reviewed-by: David Matlack <dmatlack@...gle.com>