From mboxrd@z Thu Jan 1 00:00:00 1970 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 D1D4B31B138; Mon, 18 Aug 2025 13:01:34 +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=1755522094; cv=none; b=E2JLhD4x8HUkiT//MnZbUNdV+nzeTv+3p82EygicKArfkcjZWdeA2cY9ywB+/aVp7++e9TLr1jfIBmc4KcK6/mW/4WgU0osB5gf358oM8RipfnVjVGK6JYxwUyf4t7+zgzB0TihRzDuTLLsLSyFUTZFHbnojbaMLKoVfGVkibNw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755522094; c=relaxed/simple; bh=UfaEnKgWe05u/f8BAAA4yYumQZyvyDz08BXUDox6yOo=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=WYHkJvwWjXxhUOrq4i5CGtK4a5CXobtvXu0UWPWcedUaDtR0jF1U7skGCcwdlmvBuEgj87+rAlBdw2O5+TQn/J24b2ZZVwtt/yBCOtlGVn/hE/tU6aF2fM40RJqHaMO+WwZSK193EhXjIegYmcbrPQ/QGl1jP6tJdRnwIgv2y1g= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=J1DZbZVi; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="J1DZbZVi" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4FC1FC4CEEB; Mon, 18 Aug 2025 13:01:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1755522094; bh=UfaEnKgWe05u/f8BAAA4yYumQZyvyDz08BXUDox6yOo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=J1DZbZViYMXcwO9qgiuHN4ESEBQsR2NQ55PwBjTIakdNQs6G9WwZi/jAQley+rBLp lunCm7ZyhgpB6F+9I0jnzSAdBBowY6Ik/eUbeM9kdQB+4aNEYOoj4Ihvzq+0zzPn20 3Wak7nJXmx7pa99IciV0uA5NTKENttWgYLPrE0D0= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Robin Murphy , Leo Yan , Will Deacon , Sasha Levin Subject: [PATCH 6.12 212/444] perf/arm: Add missing .suppress_bind_attrs Date: Mon, 18 Aug 2025 14:43:58 +0200 Message-ID: <20250818124456.798521209@linuxfoundation.org> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20250818124448.879659024@linuxfoundation.org> References: <20250818124448.879659024@linuxfoundation.org> User-Agent: quilt/0.68 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.12-stable review patch. If anyone has any objections, please let me know. ------------------ From: Robin Murphy [ Upstream commit 860a831de138a7ad6bc86019adaf10eb84c02655 ] PMU drivers should set .suppress_bind_attrs so that userspace is denied the opportunity to pull the driver out from underneath an in-use PMU (with predictably unpleasant consequences). Somehow both the CMN and NI drivers have managed to miss this; put that right. Signed-off-by: Robin Murphy Reviewed-by: Leo Yan Link: https://lore.kernel.org/r/acd48c341b33b96804a3969ee00b355d40c546e2.1751465293.git.robin.murphy@arm.com Signed-off-by: Will Deacon Signed-off-by: Sasha Levin --- drivers/perf/arm-cmn.c | 1 + drivers/perf/arm-ni.c | 1 + 2 files changed, 2 insertions(+) diff --git a/drivers/perf/arm-cmn.c b/drivers/perf/arm-cmn.c index ff17e0f95fbb..978b239ec10b 100644 --- a/drivers/perf/arm-cmn.c +++ b/drivers/perf/arm-cmn.c @@ -2661,6 +2661,7 @@ static struct platform_driver arm_cmn_driver = { .name = "arm-cmn", .of_match_table = of_match_ptr(arm_cmn_of_match), .acpi_match_table = ACPI_PTR(arm_cmn_acpi_match), + .suppress_bind_attrs = true, }, .probe = arm_cmn_probe, .remove_new = arm_cmn_remove, diff --git a/drivers/perf/arm-ni.c b/drivers/perf/arm-ni.c index 4b9d53dae897..fb09730a9aa0 100644 --- a/drivers/perf/arm-ni.c +++ b/drivers/perf/arm-ni.c @@ -710,6 +710,7 @@ static struct platform_driver arm_ni_driver = { .name = "arm-ni", .of_match_table = of_match_ptr(arm_ni_of_match), .acpi_match_table = ACPI_PTR(arm_ni_acpi_match), + .suppress_bind_attrs = true, }, .probe = arm_ni_probe, .remove = arm_ni_remove, -- 2.39.5