From nobody Fri Apr 3 09:50:20 2026 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 0BACB34A765; Thu, 19 Feb 2026 16:11:49 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771517510; cv=none; b=Kv5XWD3RlFOOKeBSVzAAehi1NGEenUZmccqLPwJkJ5qsjMWKFXFohhPsDx1FrCGj6WrnhaQT+cVuMu4un05s7CHEA97aEL9TNykpIXkxk0GHKzc9fYElSW4LHglw667QwugAaSNjJiS4K9vooR+OIUx1/H2T57eV6YYJz2J3PoA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771517510; c=relaxed/simple; bh=4gcQjGoJPNJg892BM7OVRv9m0uHb38i7oO1kv8EH3L0=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:To:Cc; b=pKgXpm5UdmLV1Jujg7mRfYmP/GVMj5IsdYACmjWC+nxj0xD/1V0OQpYoNHEICIU/N1gePg4Mm4ms32Uq/i0uONtVcyTTQOI6AXvryjhzXnr/NMSTUnLNNw0U8OTkeOqt76oHAIslUJCho4Ihdz8RetvZqLnJX8t870Sn8P9yP7U= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=TBCmb1jK; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="TBCmb1jK" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0ABF3C4CEF7; Thu, 19 Feb 2026 16:11:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1771517509; bh=4gcQjGoJPNJg892BM7OVRv9m0uHb38i7oO1kv8EH3L0=; h=From:Date:Subject:To:Cc:From; b=TBCmb1jKvdbUWQ58yd7ChXhtEZeFnR/b2gV6RXOyGgLiIby/W3u08bdlSd4SAMIDL lraQXnGtQE3uTF3PNpDtXxJsMnjqx6MqO28LKBerRBjnxBbtHySAEmyFBqc02ylVeh yzQOfYMM8cfyv6wdJqLc/ljpTjRhRCwUf+4xISOgnQ5ZhVS703KMyQPl9gy+F4qYI1 iIiCBEYWZRFOTjgpanvWRKgrSUOw70sT+WD5XnF7UnRG/EU+SrO7vKGMAn5uoKiGJO p3MfKykU05F5rRqBOyMqsryvSwsva599g+++Sea/OPKKsYT3imkcdZ2kAaXAfPJFz9 K4DnexMnk0ATg== From: Daniel Gomez Date: Thu, 19 Feb 2026 17:10:53 +0100 Subject: [PATCH] builtin: mark __builtin_strlen() as integer constant expression 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="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260219-fix-builtin-strlen-v1-1-3ec3efc0cda7@samsung.com> X-B4-Tracking: v=1; b=H4sIAAw2l2kC/x2MQQqAIBAAvyJ7bkENIvtKdMjaakEstCIQ/551H JiZBJECU4ROJAh0c+TdF1CVgGkb/UrIc2HQUjdSK4MLP2gvdid7jGdw5FG2ZOvxE4yFEh6BivV P+yHnFx4s1upkAAAA X-Change-ID: 20260219-fix-builtin-strlen-08eb3a02609b To: Chris Li , linux-sparse@vger.kernel.org Cc: Aaron Tomlin , Andy Shevchenko , Dan Carpenter , Daniel Gomez , Dmitry Torokhov , Eric Biggers , linux-kernel@vger.kernel.org, linux-modules@vger.kernel.org, "Luck, Tony" , Luis Chamberlain , Petr Pavlu , Sami Tolvanen , Daniel Gomez X-Mailer: b4 0.15-dev X-Developer-Signature: v=1; a=openpgp-sha256; l=1223; i=da.gomez@samsung.com; h=from:subject:message-id; bh=j87Y2dJcwdq0p1O1Ul/L7V3YRi0Y7sCZYFOwhDIphl0=; b=owEBbQKS/ZANAwAIAUCeo8QfGVH7AcsmYgBplzY5OXYb4M90J+DN4bnOmXzMhhwWeysZ/eCq3 CT0lv69xlmJAjMEAAEIAB0WIQTvdRrhHw9z4bnGPFNAnqPEHxlR+wUCaZc2OQAKCRBAnqPEHxlR +zpyEACL10TDRCrSJCxnLgj/9fr4Jj2UpRC4FcLCPBMzRWcRk99GWQzO08HhPF3e3EqTp5rsDLF cH5KGLT8Smmj9lvkikrsfBhvqF7trYsYVUGSRvSBNz+Sui5PNTkPVGsu/vp0UiQW6imW9JaVXbk wepgPfBxtO/rbx9+rQxvWQvLc7gM/PtxmlWzw8MxYDM+KVfI1u2DkI/5E5Ejd0QqHfTSpLwjdTA 8h2Ku/wWR1ijiIMoqxwofSyu/I3nG3Vs+DsEmXqeTjMfprudCdJo2XoOm7OwrKkhrPlYcqW7dvG 3HO8eeIZsMKOPUhvbIvqZ0tiineTl9bJ61GXCtDheNSTUAwZmY9RrrVCBbveGB6OkLZ4SST6Qqz hfad9NfR4JipEt1YUkUskXUtVcQwZ83YEVX/vbMR59oFcvgv0ddp/bC7ApeA8ovIHTXegGFHQei QCEWoBQ6Q5EvVJL0dQc0F3SJOLwzvsZn9XNNj4n5RN35NJYgWCKDUPr1yETQj2vuQnu5/hB9T5O JolMAyMB+Tji/7xh0p3c04Jit0o/AlBQkT8g4yqRXX82BkdY1sadX4mKfiWxW/6TRvPuhSbIqfO iw15ZaU+Ov6emVjQTAdQmnBoq8HZyZvm6Eky9DNjYgBjJtsySF3kPMNREm959E45kWCKLSPo8OP orDT0FwtYG8yiuA== X-Developer-Key: i=da.gomez@samsung.com; a=openpgp; fpr=B2A7A9CFDD03B540FF58B27185F56EA4E9E8138F From: Daniel Gomez Commit ae83f3b72621 ("module: Add compile-time check for embedded NUL characters") in the Linux kernel added static assert checks for __builtin_strlen() inside MODULE_INFO() macros. But sparse does not mark the result as CEF_SET_ICE during evaluation, making these assertions fail with: error: static assertion failed: "MODULE_INFO(...) contains embedded NUL byte" Fix by marking __builtin_strlen() as an integer constant expression at eval time. This matches other builtins like __builtin_constant_p() or __builtin_safe_p(). Signed-off-by: Daniel Gomez Reported-by: "Luck, Tony" Reported-by: Eric Biggers Reported-by: kernel test robot --- Discussion: https://lore.kernel.org/all/aTc9s210am0YqMV4@agluck-desk3/ --- builtin.c | 1 + 1 file changed, 1 insertion(+) diff --git a/builtin.c b/builtin.c index 9149c43d..7573abf8 100644 --- a/builtin.c +++ b/builtin.c @@ -616,6 +616,7 @@ static int expand_strlen(struct expression *expr, int c= ost) } =20 static struct symbol_op strlen_op =3D { + .evaluate =3D evaluate_to_int_const_expr, .expand =3D expand_strlen, }; =20 --- base-commit: fbdde3127b83e6d09e0ba808d7925dd84407f3c6 change-id: 20260219-fix-builtin-strlen-08eb3a02609b Best regards, -- =20 Daniel Gomez