From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794279144; b=cWZLK8XXfKaIVNym1RQC/kfkdNkwEAU+HjJyHIR/j2VvVNoIGjrP+l1xoz7QVSyJDuI/ S91zvH1qd8DZl44R2viVsBFgKoyvpl28ic7y77wOYCZYfjPkZXJoj87/2RF0jwnTcegQu aJwCIozNbjRT8xaxpI6ooMIfx1gRJzNFdhEqwWb9H0d0UDPzLpV0Xxn+P7w50bbV7CTgN w+6YwgMVGO+85e5nwTpzJGlQwcKbHknzWKha5zeGnwBx8VvNme9iv5bNYozj3hkWXhOvb RI8d5ISSPHbetCoVwDVhBZ5sil8xPmwHNKTEVlHqWsGyZwMrRba9Uta4ZO5qOZsID6g== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794279144; h=Received:DKIM-Signature:From:To:In-Reply-To:References:Subject: Message-Id:Date:MIME-Version:Content-Type:Content-Transfer-Encoding: X-Mailer; bh=F8p40prgOjcf7Cr1A1mpKzFS1rOkrh+mPMiwVxEyQMM=; b=zyEbJg33sy+kn7u20IlzeQAGCYfRoQeuN1+tuDsi96kB6YIfl61RmHCoC9woHY6HjjTr zp/rkmLt0O9PEEgPHIJncmHx/mbROFKZwEeoyQpuVteHMS+UgJvKdpPQoCs+bDZO2im1C nq/aUy8hbIGrkke06tRI6y9uyA9rJpI5qbdxxF7t4JGauxJFutc48KpZ4pEQ2X2zwTuxY 5fBgOJO+tqA07DHIHW3UfX6mf30uBgjNHs0P79/5+XVeMjq8eVTK9nZkwCnSLp5YT7eDr uvxbNQwoNgEOgJ/uPX0V35GBteJ8pi7H7gopvchWNQTtcUU4vhC35NJ84O5slIZbaww== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=K7YIehtK; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E519C606A33E; Tue, 10 Nov 2026 02:52:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=K7YIehtK Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5C6441F008A3; Tue, 10 Nov 2026 02:52:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1794279143; bh=F8p40prgOjcf7Cr1A1mpKzFS1rOkrh+mPMiwVxEyQMM=; h=From:To:In-Reply-To:References:Subject:Date; b=K7YIehtKQL2guZyN7Sv/egLXJykqXGmM6XxvBpRJ4meC+lvngPWyXhWTW1yDI3vXp 3WahClvB2ESzp5sSKwXcgVd6DZh9+HDMgtk+ovlPt+fGcttU+9JKlCPIi07+3grfuz PbTFFFR7JqKyuUAo9fDAk1pvBwmeC8fwWv1CYnrF+FXOepc2UvMgrqyLNkFiJEiotw w81ORjAhJ5vTDLIgKEUV3y0ZKkZ4LQD0mf7SE9uTtz9y6TARDZCU4Q92TvOZXZ2H16 /93SDgBGmsyQZPhfN6vFp7qAHWmmaeVuisITd1eboNKesbxdAUyIhEWlwIukC2byDL W2vdDvfGfzYSg== From: Namhyung Kim To: Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Mark Rutland , Alexander Shishkin , Jiri Olsa , Ian Rogers , Adrian Hunter , James Clark , Alexander Antonov , linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org, lirongqing In-Reply-To: <20261106022027.2413-1-lirongqing@baidu.com> References: <20261106022027.2413-1-lirongqing@baidu.com> Subject: Re: [PATCH] perf iostat: Reject incomplete and out-of-range port strings Message-Id: <179427914333.13444.13334589119500754663.b4-ty@kernel.org> Date: Mon, 09 Nov 2026 18:52:23 -0800 X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-Mailer: b4 0.14.3 On Fri, 06 Nov 2026 10:20:27 +0800, lirongqing wrote: > The root port regular expression accepts trailing characters and an > unbounded domain field. A nine-digit domain matches it but makes the > subsequent width-limited sscanf() stop before the bus. The parser still > returns success, allowing the filter to use an uninitialized or stale > bus value. A three-digit bus is silently truncated as well. > > Match the complete notation within the documented domain and bus widths. > Check regular expression compilation and propagate conversion failures > instead of treating a warning as successful parsing. > > [...] Applied to perf-tools-next, thanks! Best regards, Namhyung