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Wed, 01 Apr 2026 20:47:49 -0700 (PDT) Date: Thu, 2 Apr 2026 11:47:45 +0800 From: Kuan-Wei Chiu To: Steven Rostedt Cc: Krzysztof Kozlowski , Josh Law , akpm@linux-foundation.org, pmladek@suse.com, andriy.shevchenko@linux.intel.com, linux@rasmusvillemoes.dk, senozhatsky@chromium.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2 1/2] lib/vsprintf: always advance args in bstr_printf() pointer path Message-ID: References: <20260330193440.74268-1-objecting@objecting.org> <20260330193440.74268-2-objecting@objecting.org> <2f824be3-7b30-41c6-b517-de1086624171@kernel.org> <20260331104708.6dc812ca@gandalf.local.home> 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: <20260331104708.6dc812ca@gandalf.local.home> Hi Steven, On Tue, Mar 31, 2026 at 10:47:08AM -0400, Steven Rostedt wrote: > On Tue, 31 Mar 2026 09:26:46 +0200 > Krzysztof Kozlowski wrote: > > > On 30/03/2026 21:34, Josh Law wrote: > > > When the output buffer is full (str >= end), bstr_printf() skips > > > advancing the args pointer past the pre-rendered pointer string in > > > bin_buf. This causes all subsequent format specifiers to read from > > > the wrong position, corrupting the rest of the output. > > > > > > Always compute the string length and advance args regardless of > > > whether there is space to copy into the output buffer. > > > > > > Signed-off-by: Josh Law > > > > NAK > > > > Questionably origin (multiple identities used), questionable content. > > Can you expand further on this complaint? > You can check out the related discussion in this email thread [1]. It's mainly about a recent controversy regarding AI-generated kernel contributions. [1]: https://lore.kernel.org/lkml/cbd0aafa-bd45-4f4d-a2dd-440473657dba@lucifer.local/ Regards, Kuan-Wei