From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pl1-f178.google.com (mail-pl1-f178.google.com [209.85.214.178]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D76E23A4F2F for ; Tue, 23 Jun 2026 07:49:17 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.178 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782200959; cv=none; b=Tk9HXcgz79xq1kZucYj5wC5CS7jk45cT6QrGeo8Y1nU5shAL0aUCFtjrTGARdH3O7/glZ3vmUVKPLyaZrfBKriKaXabGfIqFPdfofkAgpALlDv+3w+MPvDrvdXx0O+Bc9eKKA1kgIC11ZJdk4iB5kGnJu8s18YbVpr3PnGLcu4w= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782200959; c=relaxed/simple; bh=R2NfEFR48mxkPS9o5ja5whsn/gDEVUYlfiFFX9fRCMc=; h=Date:From:To:Cc:Subject:Message-ID:MIME-Version:Content-Type: Content-Disposition; b=mMb7ttXuOm3mAy6rhNYrlCjLvlVpPaEci7WcjdHge4Nk3+kPjLuv+qR30iNFutfYmnftp6IHrWxM9UHxs8cean5v/N4NsNk4rpNp5aECej2xVLbS7G1X9MqGR6F9YRfx/hgZE1WGsXAX3oGa2PuL7JEz33A4yzQBkIhkotKp3d0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=chromium.org; spf=pass smtp.mailfrom=chromium.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b=P9CY92I6; arc=none smtp.client-ip=209.85.214.178 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=chromium.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=chromium.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="P9CY92I6" Received: by mail-pl1-f178.google.com with SMTP id d9443c01a7336-2c6d3851e09so27212795ad.0 for ; Tue, 23 Jun 2026 00:49:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; t=1782200957; x=1782805757; darn=vger.kernel.org; h=content-disposition:mime-version:reply-to:message-id:subject:cc:to :from:date:from:to:cc:subject:date:message-id:reply-to; bh=stigWavm9kcEzMKTQ8vDm0IfVwfoW51oMNOmjzFHGwI=; b=P9CY92I6ZrPN/LpAK11+MP9m6aneZFdnBeCyE5rwYK/v8mVJ8KRE40EF8KQGtMX1pd NuizpcLv2zWAbXI7AeLnzXoBUN9sjXgtRFBXyUWz9wv3jvhutuQgAbXvnlClHXuBkpcR dQCQLeRYI0LOARIjwUK0mnuWY4E+BLm+n6Jfo= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1782200957; x=1782805757; h=content-disposition:mime-version:reply-to:message-id:subject:cc:to :from:date:x-gm-gg:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=stigWavm9kcEzMKTQ8vDm0IfVwfoW51oMNOmjzFHGwI=; b=akeOZ95bCLcgpeKxKhtlqokW9Ek1sL3X/EKI6ZMM9YTiOPSw0/uqgcx98a9MVFKo4a TV24QB/7fePoXB2A471/GgeEjky44VI07UMMjcruq68/wqxTM2DNtrSK9W8IliZAULmY AodqWtoFrdIEk5sZ/CL7BPBqsmtHS3NW9617iNZ/Xg+sQGsgKikbDd79hcqV+wDeXrxX VKLv0SUj8MSNXFJb0H4PNg8xRO73yxX7I/c202IXAygLDTggUxH45vL+/RMedj0oU88a Rm5vG+D2Y62eluhiXUjscWAmXfu5NsbsXuGPbvUIL+xAhWQzLQc1P3qJflBmeuykBWJ/ QWDw== X-Forwarded-Encrypted: i=1; AHgh+Rql5aF4kPbRNeh2u/fX2JYiTP8SxNB54jv06PZ1uAU6S0HQSQJ9pr3uilgIcCONQHnZLmzpoHuYaNwSrfk=@vger.kernel.org X-Gm-Message-State: AOJu0YyUTv7TJ9ZnpeBcHSNTdW3eJLw1NwWp0qlwyKEFy4y0W0dUhVy5 XFy57XnnK8Y1ZtpKan9qr6HOOQDNLE4qmpn7zALAyCKnljDuzlQ7tnVVEg3jIy1Fdg== X-Gm-Gg: AfdE7ckku2bYtkmT6fqzY4zS2CapNa/yMBZ+GBnjzyy4tK9WOJYCy0RBgWu1EZXH9NA C5gi5QNhuAaRUhEcLf+OmuLMqoZEBNXhIxUAEMnj6TKBNOOAUDcnmSX5MpW9eeqn8Po7+mye4+c qC0nviUicl8z7P5mh0gRYatZZtpkWIm+1OpWLMT1DWicx2FWWiHjbeuyzL7L1KCQIxwCeo8FKu6 K4iusxyCIr6R3It4cQguvkuEgz/htoWQpsoCuXiYIhY5mmWKzhgxuR4noJjoCf2axU8yo/Zergj Bm3rXahTK8p7SBdpsINfbFMYGQgl+gM/CY3ooNWXsXNXhSPaiHnFBAJlmb+uNhoZMianMrITdHC mtogmoa0UJKXNqYNKFIYhV3uPny+qlENtrMCngnicRp+nhAQdduVhWUr5Q6K460rlWlMQlwhtSd 9IVuByE5oX108VfoaC4i0gYD63Ko9pq3Zj19lmClXZsoCajETw35z3 X-Received: by 2002:a17:902:f650:b0:2c2:245a:3364 with SMTP id d9443c01a7336-2c718fbc332mr190743855ad.32.1782200957145; Tue, 23 Jun 2026 00:49:17 -0700 (PDT) Received: from google.com ([2a00:79e0:2031:6:1287:5d13:b2d6:c6ab]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2c7439f8d1dsm104708745ad.51.2026.06.23.00.49.14 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 23 Jun 2026 00:49:16 -0700 (PDT) Date: Tue, 23 Jun 2026 16:49:13 +0900 From: Sergey Senozhatsky To: Andrew Jones Cc: andriy.shevchenko@linux.intel.com, julianbraha@gmail.com, linux-kbuild@vger.kernel.org, linux-kernel@vger.kernel.org, nathan@kernel.org, nsc@kernel.org, rdunlap@infradead.org, tfiga@chromium.org, senozhatsky@chromium.org Subject: Re: [PATCH v4] kconfig: add kconfig-sym-check static checker Message-ID: Reply-To: 20260527142703.107110-1-andrew.jones@linux.dev 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 Hi, Wasn't on the Cc list, hopefully I didn't mess up the headers. Just saw this on LWN: [..] > + @echo ' kconfig-sym-check - Check for dangling Kconfig symbol references' > > +kconfig-sym-check: > + $(Q)$(PERL) $(srctree)/scripts/kconfig/kconfig-sym-check.pl $(srctree) $(KCONFIG_SYM_CHECK_EXCLUDES) I wonder if you have seen KCONFIG_WARN_UNKNOWN_SYMBOLS which seem to be addressing the same (or very similar) problem (unless I'm missing something). Basically, what I have in my build script is # perform kconfig symbol lookups: handles renamed, removed, etc. symbols export KCONFIG_WARN_UNKNOWN_SYMBOLS=1 # make kconfig symbol lookup warnings fatal export KCONFIG_WERROR=1 And then make fails whenever .config has something that is not supposed to be there anymore. E.g. .config:1606:warning: unknown symbol: SENSORS_APDS990X .config:2498:warning: unknown symbol: APPLICOM make[3]: *** [scripts/kconfig/Makefile:85: syncconfig] Error 1 make[2]: *** [Makefile:760: syncconfig] Error 2