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=1794241584; b=vngvEH9Oc3dKk/vYCRdyVuNoz3yurKBPMQIGgXOHxxP8nSK6y2JdA3lp9zBqjo6eReLy i+y6J1X5F+8ldtdGlo9LIGM1UF4Rq5qbao7QiGUhsJGdUvyEI5T0JXcR5OJcRjPLfOx0F Oo+OSVjCMcLD0h/yGeAPiHCQHEyoGikkVY4FaQaYsjNQcvito5ojgbBhywi5dvRDYqrKX k1yoaTRIuMeyb2SP+fZ7qkC9GkE+gFwCTVHdt7cRQQ+oEH2FmnCdKBcacnsOAjUl37XDC zUVi6qLdVpqrRedQFkNk4RfbDxXpoxBbXEdeaJJ1FrPyBS1ogqu+n7m19Z3nN82OknQ== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794241584; h=Received:DKIM-Signature:From:To:Cc:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:MIME-Version:Content-Transfer-Encoding; bh=JYTMYOha3EaaN25MShhLseRcaS19kSv6xNGMCGJGx0o=; b=tEBwjHDf5dzyb2mKsy0zsBvMHRULHYBLND0u8iCfaJ2keu2tMxIZn+FyCcbAMRMIPnaj 5lZbcb5X6hpaRxQqO4v0wmWKDOFODjgTX6/6BlhqDVnko9eA03oR/UnxLthRNxLkftE2B 7/bcEy55DGdxr5wQZ+EnLJBPpIJ2EQ+nSO+QPaNZ/QTJ3xv68askvzn1PKo1RGhsbjOfc ZRLY/bDL6IPmcWesfTaY3aTjP8gouiUoS/akNtIpzAZ7ie0CHeb3pDRDuMPVc3wxchw6P rpJNRCuNW6cpRtAmwu96yJERteW1zqtpusZVzLor94p/xe0n3oNWz2PjTHGHyPsxz+w== 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=fJBLQwQU; 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 794DD606A336; Mon, 9 Nov 2026 16:26:24 +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=fJBLQwQU Received: by smtp.kernel.org (Postfix) with ESMTPSA id 29DD71F0089F; Mon, 9 Nov 2026 16:26:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1794241584; bh=JYTMYOha3EaaN25MShhLseRcaS19kSv6xNGMCGJGx0o=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=fJBLQwQUjML5XbsBtFHYpZxpYmuW2AD9G7VNOnMyF8N8ZlXcJryUUUcRYlYy1WyOa VL7WwUOttej9L5Y5TfMsHhx+j06mhKv2HJNe2eZtUnEdQ3ah2OfOjRb6lspcJIEb1l pzqAWXtIzTQWzEXecx0bMP+X7jUjDiQVkSCRFLvVjY7a6ZN1LsqMV0W2PZXgUQ0Etw XkhLaTytjCxlmxNsiegy8werqdYANSFlja4VsxU3w/CX05Esb7adDPyVdvmmOnOCTO qzFvpTHQ9ippUdJDMgzezOhq5ZRzwpHVyQWMFfA2KocZWWtad9z21t58AxDg/EjdwA GO10WqBjQFpUg== From: Tejun Heo To: Zhijian Han Cc: David Vernet , Andrea Righi , Changwoo Min , Emil Tsalapatis , David Dai , sched-ext@lists.linux.dev, linux-kernel@vger.kernel.org, bpf@vger.kernel.org, daniel@iogearbox.net, ast@kernel.org, Tejun Heo Subject: [PATCH sched_ext/for-7.5] selftests/sched_ext: Fix enable_cmask load failure on older clangs Date: Mon, 9 Nov 2026 06:26:23 -1000 Message-ID: <20261109162623.674441-1-tj@kernel.org> X-Mailer: git-send-email 2.56.0 In-Reply-To: <6af1e5f2.a438010f.130489.ab94@mx.google.com> References: <6af1e5f2.a438010f.130489.ab94@mx.google.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-Transfer-Encoding: 8bit enable_cmask casts the u64 arena address of the task's cmask to an __arena pointer without cast_kern(). Older clangs without __BPF_FEATURE_ADDR_SPACE_CAST need the explicit cast, so the test fails to load there. Add it. Reported-by: Zhijian Han Closes: https://lore.kernel.org/all/6af1e5f2.a438010f.130489.ab94@mx.google.com/ Signed-off-by: Tejun Heo --- Applied to sched_ext/for-7.5. tools/testing/selftests/sched_ext/enable_cmask.bpf.c | 1 + 1 file changed, 1 insertion(+) diff --git a/tools/testing/selftests/sched_ext/enable_cmask.bpf.c b/tools/testing/selftests/sched_ext/enable_cmask.bpf.c index 0068f3c7ab3c..081be5861424 100644 --- a/tools/testing/selftests/sched_ext/enable_cmask.bpf.c +++ b/tools/testing/selftests/sched_ext/enable_cmask.bpf.c @@ -104,6 +104,7 @@ void BPF_STRUCT_OPS(enable_cmask_enable, struct task_struct *p, struct scx_enabl int ret; asm volatile("" :: "r"(&arena)); + cast_kern(m); tctx = lookup_task_ctx(p); if (!tctx) return; -- 2.56.0