From nobody Sun Dec 14 18:11:37 2025 Received: from galois.linutronix.de (Galois.linutronix.de [193.142.43.55]) (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 DE16934A775; Wed, 29 Oct 2025 10:24:06 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=193.142.43.55 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761733448; cv=none; b=q1OYurreHBmEinr5N8z14W9xgRf25wR2ea08li3cRhfML3aIz3mTKyt+hNcuqNhIcDvrtjocPyzhDqP7QsdLDAEqGs1UPXgvimFSs5XV4YV9XweUvF5s4waCn52aNFcsvQKgwSE3vBqhUCLRlsTr9H1+kE0VG+278rFJQn3qFZ0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761733448; c=relaxed/simple; bh=eey6kWvzLyl5LGjxw0V9pbLw/7zxw+oOaOp8rbcX8Lg=; h=Date:From:To:Subject:Cc:In-Reply-To:References:MIME-Version: Message-ID:Content-Type; b=slJvNlg09XmjtZWGD6aqhBlCyp1o0Tdi6uc542YOzXK76sw2bytwJy4I+9aSo2myNSDh9gZKEJZdrZevRroVjbsLZpxtkvi6zVksv7qBFypKwBoO8H4pwGmwXwNk41Z3lFmYfJBy+0zIBeWzTQD6jJgGwLUobh7G7jxfks4xckw= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de; spf=pass smtp.mailfrom=linutronix.de; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=gzMMsOpT; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=fvUxYK3X; arc=none smtp.client-ip=193.142.43.55 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linutronix.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="gzMMsOpT"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="fvUxYK3X" Date: Wed, 29 Oct 2025 10:24:04 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1761733445; h=from:from:sender:sender:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=1YgfPv8aUQ1T5ingvSVzJl8AasTUzF30cfJYRm0vUCo=; b=gzMMsOpTJh+xMTzvXOuZTubLNuBzKj5bEH1PVQ0hZ64qIaI/C/DU6Y4r4MNC5jru6JEbi1 HYBX2H9eamxKMdAMg30/BY+z+p0VEjDQX46V0d3KUkygm/QBBKQOKIf/RhsmjYf78GhQRT 4PN3mIFRGs8hIt70nkt/dB9b20s1IaKMOOgd9XgHoUOkKdAb5P4maN7g7Pw0rh1HjUJ5GQ 1uXkmA3RN2Bg5ALavdjhwO7X23cv1Vu2wmJygLCKdv+XKu9gta6aXKW49ej1QxYP6gCfC5 pF1xkj9Yd9guaGpLKdjH+8fEFjzUNckvpYbqviDP5pXjcSCk1aszVRSE5CvZWg== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1761733445; h=from:from:sender:sender:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=1YgfPv8aUQ1T5ingvSVzJl8AasTUzF30cfJYRm0vUCo=; b=fvUxYK3XQvmpOz6wA9hcNVVp8TBpDLuN38Vv6AtKSOno2TutFruJAHcXt/yrfKiiavRRrT Wt8ggbYXF47/O6Cg== From: "tip-bot2 for Thomas Gleixner" Sender: tip-bot2@linutronix.de Reply-to: linux-kernel@vger.kernel.org To: linux-tip-commits@vger.kernel.org Subject: [tip: core/rseq] select: Convert to scoped user access Cc: Thomas Gleixner , "Peter Zijlstra (Intel)" , Mathieu Desnoyers , x86@kernel.org, linux-kernel@vger.kernel.org In-Reply-To: <20251027083745.862419776@linutronix.de> References: <20251027083745.862419776@linutronix.de> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-ID: <176173344420.2601451.6354293973777581051.tip-bot2@tip-bot2> Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails Precedence: bulk Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable The following commit has been merged into the core/rseq branch of tip: Commit-ID: 9ba7c9a6b2ff2424a4035403fc12c948efdcff0a Gitweb: https://git.kernel.org/tip/9ba7c9a6b2ff2424a4035403fc12c948e= fdcff0a Author: Thomas Gleixner AuthorDate: Mon, 27 Oct 2025 09:44:04 +01:00 Committer: Peter Zijlstra CommitterDate: Wed, 29 Oct 2025 11:07:10 +01:00 select: Convert to scoped user access Replace the open coded implementation with the scoped user access guard. No functional change intended. Signed-off-by: Thomas Gleixner Signed-off-by: Peter Zijlstra (Intel) Reviewed-by: Mathieu Desnoyers Link: https://patch.msgid.link/20251027083745.862419776@linutronix.de --- fs/select.c | 12 ++++-------- 1 file changed, 4 insertions(+), 8 deletions(-) diff --git a/fs/select.c b/fs/select.c index 082cf60..65019b8 100644 --- a/fs/select.c +++ b/fs/select.c @@ -776,17 +776,13 @@ static inline int get_sigset_argpack(struct sigset_ar= gpack *to, { // the path is hot enough for overhead of copy_from_user() to matter if (from) { - if (can_do_masked_user_access()) - from =3D masked_user_access_begin(from); - else if (!user_read_access_begin(from, sizeof(*from))) - return -EFAULT; - unsafe_get_user(to->p, &from->p, Efault); - unsafe_get_user(to->size, &from->size, Efault); - user_read_access_end(); + scoped_user_read_access(from, Efault) { + unsafe_get_user(to->p, &from->p, Efault); + unsafe_get_user(to->size, &from->size, Efault); + } } return 0; Efault: - user_read_access_end(); return -EFAULT; } =20