From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=82.195.75.108 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1793658663; b=wKvxkOxC1p4E0F1y7bZhzuCfkMze9qmCarqSbr1FZa+GOB41pn6Q/pYzCsiph6yGfFbX IpCtf9szp8rAdu9sUxN/L/7lT9aYbqXJyTxUtXXEWJwWhyVsWHN1eHy/b6yB4oMXHssVI 5XikfaxJwdH0GPBPc6ipfn6RG4IP4ZvtNq3TwlOZx7KhwSDoHGoaJmkm44kgMU2r9huV4 9Zk7OUtryDqTQGLFi3I0+BiY6NY7XCdiStVkjBj+J0aRWjrrH43M4fflZB8HX69NnBNju CUwcrXBb9nyaMw5UjL6Hxxdk4hUpSXsGvgpDbserBU6edlEmdyfTqnJ1re8QPaYu/8w== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793658663; h=DMARC-Filter:DKIM-Signature:Received:Date:From:To:Cc:Subject: Message-ID:References:MIME-Version:Content-Type:Content-Disposition: In-Reply-To:X-Debian-User; bh=KWgnR2G3RV4vOX+KxmnS5Ld1miJ5q+014e6/V05033I=; b=eGKzWzSci871HYskhRBvGU6EdRM44ZrsKTdqj1btIynicWWcXuyGdsZNiGKrdCjt1IQn E2PQ98hx1eAuneYIztdHiuMLp00dKPFlW0gzm6PCBndo9MtWlIFQJSdI9TRDD1SEEfm94 qJ+pQnvsaXRmop2+Jgjh+qQRLJdQos1qTSxuzzBaj/ulVbLJnsAzL3UO1Jm9BGxeZkE0W p2biP+ore6khB/zNcLLS9OOszZQA3FVXI8mqLJTNMAxgixFdpAJF7unznh6qBRZZ+VjbA cIr62Huhivd9U1lExXOat1hg0neOJefcKx0yIeKpJvsctsDp5GmrwemvNxF/gnvPT0A== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass header.from=debian.org; spf=pass smtp.mailfrom=debian.org; dkim=pass header.d=debian.org header.i=@debian.org header.a=rsa-sha256 header.s=smtpauto.stravinsky header.b=O5bl7xk4; arc=none smtp.remote-ip=82.195.75.108 Received: from stravinsky.debian.org (stravinsky.debian.org [82.195.75.108]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (prime256v1) server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E6035606A32C for ; Mon, 2 Nov 2026 22:31:02 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org E6035606A32C Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=debian.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=debian.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=debian.org header.i=@debian.org header.a=rsa-sha256 header.s=smtpauto.stravinsky header.b=O5bl7xk4 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=debian.org; s=smtpauto.stravinsky; h=X-Debian-User:In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=KWgnR2G3RV4vOX+KxmnS5Ld1miJ5q+014e6/V05033I=; b=O5bl7xk4VoEfY6gEmSF+BWCfr3 TQjlQHXaiHrC0VPDSReJ7+Js75X1okvwh2KCQbZN21jytbhIfyvOQi2XmDgMSG26H3VM7zmgnpbBO gj+WW4bY5s9nJTezkZdiH6MfupPrNQGy7Z4anG7ODhC+6kd9OIAp0aDjRITcwe8Ke2QeWqZXbmcxi dZuMuZJyDh3Lx6HgARLc44Ucy46WeR1hlSRPOByenABxbPEt5ne4Z585TWlUSbqi6nHNb2lCEcoWv xO0KOn70NPM60uekBoh03cYeT2tW6i8jc+nz6N2jxMWa3Aukkvy9XLyytw43YeczB3/QEvK0nfuja Br6SFijA==; Received: from authenticated-user by stravinsky.debian.org with esmtpsa (TLS1.3:ECDHE_X25519__RSA_PSS_RSAE_SHA256__AES_256_GCM:256) (Exim 4.96) (envelope-from ) id 1xO0Y9-006Tjn-1n; Mon, 02 Nov 2026 22:30:45 +0000 Date: Mon, 2 Nov 2026 14:30:39 -0800 From: Breno Leitao To: Dave Hansen Cc: Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, "H. Peter Anvin" , Tom Lendacky , Neeraj Upadhyay , Nikunj A Dadhania , linux-kernel@vger.kernel.org, catalin.marinas@arm.com, kernel-team@meta.com Subject: Re: [PATCH] x86/sev: Fix kmemleak false positive for the RMP segment descriptors Message-ID: References: <20261102-sev-rmp-kmemleak-v1-1-e6fb2eb96e79@debian.org> <036145d8-46b2-4389-afd7-26c897d09ce7@intel.com> 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=us-ascii Content-Disposition: inline In-Reply-To: <036145d8-46b2-4389-afd7-26c897d09ce7@intel.com> X-Debian-User: leitao On Mon, Nov 02, 2026 at 12:48:16PM -0800, Dave Hansen wrote: > On 11/2/26 08:49, Breno Leitao wrote: > > Register the table with kmemleak, so it is scanned like any other > > object. > > > > kmemleak_alloc() registers a block of memory with kmemleak, so kmemleak > > scans it and counts pointers into it, do it with rmp_segment_table. > > Why don't we just kmalloc() the thing? That would do the work as well, if this is an option.