From nobody Sat Feb 7 09:48:06 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 8227A230BF6; Wed, 28 Jan 2026 14:10:00 +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=1769609400; cv=none; b=IJhCKBB7mRJPNiBCvg20wXvuGVAcTiI3Ga25DY6QYG+RNvNd5x4VlK1XMXggJd72PJB3udTzR334H7aEbjNBHUqnAxJfA4vFzGlMNF6b2GMu3OJ24d6J9AM7L8n8CDpG6Ev6ADNc6sCxwhmHMP6E69xySZx3IeqjS/gyEY+WGj4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769609400; c=relaxed/simple; bh=LillPVj+D01tzFsPNb4HRfbZ2n9V6Am4yy1/k9dGmvE=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=i+RtJ5XQ0wFKKAk9pZuLamSZ8cRuQGRRLmWWLHzwxp8Kehoh45ZTsWu5OrutihD9IPErLKRJd1Vtev3uHTKOOriZq3MP8+49ex1Qvm3yfeXC2c/pgduZMCiMVXw8K/crk6wCPxwFNI5idne73qFZyz24UJjwSf+SR+pBI1tzQV8= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=tml10nKW; 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="tml10nKW" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9716AC4CEF1; Wed, 28 Jan 2026 14:09:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1769609400; bh=LillPVj+D01tzFsPNb4HRfbZ2n9V6Am4yy1/k9dGmvE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=tml10nKWeU387O4x0je4hPABZkRdkplgyN1Q3c91Wxvrcmt7nPNACwS3E52NCd902 knjrPfj6D2XlDCWPFXCM0LwsfTKiQX0xXJ1fZd/LjslhFFf2CeZ67IstbruwnIsDBW 4CFzvSy/3s9MuIeJW+VFqcJbMyvHIziirGYHDJzROFalqtPoJs7NT6HuFu3gLCVUyU hIM0T0nOC7xE3WvEUSGHzC+491E+oH0ujknEesFD9jAQJx5UoCubPZVYtolaZQX2wg SXdbMxBaq4PRFm3yqSs15OjKx7fBJ5Co9Hjy53VSLue2BoPeVDq64r5gJsBfFfIEZG +8DDLrBzNFVEA== From: "Masami Hiramatsu (Google)" To: Steven Rostedt , Peter Zijlstra , Ingo Molnar , x86@kernel.org Cc: Jinchao Wang , Mathieu Desnoyers , Masami Hiramatsu , Thomas Gleixner , Borislav Petkov , Dave Hansen , "H . Peter Anvin" , Alexander Shishkin , Ian Rogers , linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org, linux-doc@vger.kernel.org, linux-perf-users@vger.kernel.org Subject: [PATCH v6 05/11] tracing: wprobe: Fix to use IS_ERR_PCPU() for per-cpu pointer Date: Wed, 28 Jan 2026 23:09:54 +0900 Message-ID: <176960939425.182525.15663394581634314970.stgit@devnote2> X-Mailer: git-send-email 2.43.0 In-Reply-To: <176960933881.182525.11984731584313026309.stgit@devnote2> References: <176960933881.182525.11984731584313026309.stgit@devnote2> User-Agent: StGit/0.19 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 From: Masami Hiramatsu (Google) Since wprobe uses IS_ERR() for per-cpu pointer, it failed to build. /tmp/next/build/kernel/trace/trace_wprobe.c: In function '__register_trace_= wprobe': /tmp/next/build/kernel/trace/trace_wprobe.c:176:20: error: cast to generic = address space pointer from disjoint '__seg_gs' address space pointer [-Werr= or] 176 | if (IS_ERR((void * __force)tw->bp_event)) { | ^ /tmp/next/build/kernel/trace/trace_wprobe.c:177:35: error: cast to generic = address space pointer from disjoint '__seg_gs' address space pointer [-Werr= or] 177 | int ret =3D PTR_ERR((void * __force)tw->bp_event); | ^ Use IS_ERR_PCPU() instead. Link: https://lore.kernel.org/all/175979899246.1800846.1725245135731182727.= stgit@devnote2/ Reported-by: Mark Brown Closes: https://lore.kernel.org/all/aN6fTmAjD7-SJsw2@sirena.org.uk/ Suggested-by: Linus Torvalds Signed-off-by: Masami Hiramatsu (Google) Reviewed-by: Menglong Dong --- kernel/trace/trace_wprobe.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/kernel/trace/trace_wprobe.c b/kernel/trace/trace_wprobe.c index 4b00a8e917c1..98605b207f43 100644 --- a/kernel/trace/trace_wprobe.c +++ b/kernel/trace/trace_wprobe.c @@ -173,8 +173,8 @@ static int __register_trace_wprobe(struct trace_wprobe = *tw) attr.bp_type =3D tw->type; =20 tw->bp_event =3D register_wide_hw_breakpoint(&attr, wprobe_perf_handler, = tw); - if (IS_ERR((void * __force)tw->bp_event)) { - int ret =3D PTR_ERR((void * __force)tw->bp_event); + if (IS_ERR_PCPU(tw->bp_event)) { + int ret =3D PTR_ERR_PCPU(tw->bp_event); =20 tw->bp_event =3D NULL; return ret;