From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7942C2EC090; Fri, 28 Aug 2026 15:16:55 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787930216; cv=none; b=c1/fiM6bqW5S0bwgzPwb2Y/YCBoxArQPjC00fmawa2HtFeqQH8fh79odjAR00ZaYtzEkYjvWCwn63FUETflg9x48eXQyIZ6GZ77xet2wbkF3AuLMWF8m71ItQWikcMoo6jUQuW2uYs2lbpPTCFhTCdUPgG4EXduSctbP8e5v1ZE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787930216; c=relaxed/simple; bh=Q59T3pNM7f250DsuM+zm4cYq+MejOdXE3S0WDywQ3EQ=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=a/Ia6RzGBuqBoLWzUIQAWOhW/3KVbr48bLOaAWVZw36ZMRwmlEOj2KKSSp8fX19y+FQfSmNldRONbPTnrXWHqU+5S4suK3fJNT/H1c7WcVtNi0hocDLAriEclMUyK7zS7VVWLfuaqCt5Q8M6mD1zljjgVbLQQJNB+YA2AqExJ9k= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=hOPNhXbw; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="hOPNhXbw" Received: by smtp.kernel.org (Postfix) with UTF8SMTPSA id 888B01F000E9; Fri, 28 Aug 2026 15:16:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1787930215; bh=tEb0OHpSN5AAL9HgLZnc75ThezeOxsQzDLYZJatUxac=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=hOPNhXbwcREoOG/U3kqD/OvJjwZd0fVmpDWLfbWnoIsT619T7C8Vh+uvcOjPYnmuE 2wqtRDZz9oVGHY1740sZY5MYJm9MC+nwVBiZVgXYE+MZjhmUZrZuGRPIE4b01JEyrT EGfWPUdVOEapWnZml/hfiIBUpwPV9x35K6GzhmHk7gIYDY2EwLWrUhrRcQF5+Hmms2 8UT+T1L6gclwvl3kRiokXu0DJs1U5DiPQXBtohVetvK1pmv4WZjbwNICP5ooKIOQnJ 9+hqLZZyRqTs+u2SN+bareBfHvkBAm2aXJ+stLCLL4UL0kM5h95sUtGUZyd0/Ono+0 uXkcqw1yqSArg== Date: Fri, 28 Aug 2026 17:13:43 +0200 From: Nicolas Schier To: Jaihind Yadav Cc: kees@kernel.org, nathan@kernel.org, linux-hardening@vger.kernel.org, linux-kbuild@vger.kernel.org, linux-kernel@vger.kernel.org, linux-modules@vger.kernel.org Subject: Re: [PATCH v3] scripts/gcc-plugins: suppress recorded GCC switches for extmod builds Message-ID: Mail-Followup-To: Jaihind Yadav , kees@kernel.org, nathan@kernel.org, linux-hardening@vger.kernel.org, linux-kbuild@vger.kernel.org, linux-kernel@vger.kernel.org, linux-modules@vger.kernel.org References: <20260817185146.GC1249844@ax162> <20260820060116.786173-1-jaihindy@qti.qualcomm.com> Precedence: bulk X-Mailing-List: linux-modules@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: <20260820060116.786173-1-jaihindy@qti.qualcomm.com> On Thu, Aug 20, 2026 at 11:31:16AM +0530, Jaihind Yadav wrote: > With GCC plugins enabled, external module builds can record > -fplugin=... paths in DWARF producer metadata via > -grecord-gcc-switches, leaking host/build specific paths and > triggering QA checks. > > Handle this in scripts/Makefile.gcc-plugins for KBUILD_EXTMOD > builds by adding -gno-record-gcc-switches to plugin cflags. > > This keeps plugin behavior unchanged while avoiding absolute > plugin path leakage in external module debug metadata. Maybe it makes sense to add a note on how to restore the original behaviour for those who may want to have the gcc switches recorded in debug data for external kmods ('make KCFLAGS=-grecord-gcc-switches'). -- Nicolas