From nobody Tue Dec 2 01:27:35 2025 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 BB0DD2EC0AC; Fri, 21 Nov 2025 11:52:35 +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=1763725955; cv=none; b=Dz/FTTCixfotf3n3YtQFV0V8QBq9o8TQreKQlOqdVkW5pxPOxJhSoocannUyt6Letp+ueSezdlnAOzwiS3KlHM1WwXAZX8jdJL/nljOTjfpFEcX5XXK5h8MtX5PvVZbJGXEfadxmWlytpH8ObY0XQuQ4z3UM7RFAvh7/tpijflQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763725955; c=relaxed/simple; bh=BjV9u6tBh3Z2pPD14LCQ3iw02Kr9iWTm3PzMnmvVkrU=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=YF+93PDd0Qx9UkMtfCzvbnoE1aYCRng7HWWr7jwc1BS9Z156HTk4XVkrerOIKGzxR6mXuz+B0OOYIGDAEmFhbw8csRfYV83jJSyLklbTFmhghU7C86HGEejKQzUXpstHoDMJ3HTh/pRzfPxEAgrOcVmncD6MzhQwU8SiIalov78= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=qFBTkWLR; 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="qFBTkWLR" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 47695C4CEF1; Fri, 21 Nov 2025 11:52:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1763725955; bh=BjV9u6tBh3Z2pPD14LCQ3iw02Kr9iWTm3PzMnmvVkrU=; h=From:To:Cc:Subject:Date:From; b=qFBTkWLRoIpqVgOwHxQqW56VmN72uOuESojAKT2cZWZ4p0aitb48zzb51O4PIaXPU laN8koIJ2NuID5qKNUVmoyx+yAhq5NKvEiCtBP3yxmfgwQ6iC/5D5aXQV9oydFY3XW Y+tZ62NdIOpJdMHteJ5+B0VZjeG6CEhh49rrHTHi4IyQasafU3W8k973ScCSboaRCW /Zo7pOAVypXve8r4TyNmooNPXTrSkiv35XbM5fGFDW0JbWBqEc0DDZ4kSM9wH4IMEg Q7A1XU+pCsYII5ecVUSnk+A7L1bvP1ImrGaQNCK08ew9rGnmuBASmfmOmhCFLQb0ou qgWo/usoYk7Qg== Received: from johan by xi.lan with local (Exim 4.98.2) (envelope-from ) id 1vMPgo-000000002DI-3sfX; Fri, 21 Nov 2025 12:52:35 +0100 From: Johan Hovold To: Will Deacon , Mark Rutland Cc: linux-arm-kernel@lists.infradead.org, linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org, Johan Hovold , stable@vger.kernel.org, Besar Wicaksono Subject: [PATCH] perf/arm_cspmu: fix device leaks on module unload Date: Fri, 21 Nov 2025 12:52:13 +0100 Message-ID: <20251121115213.8481-1-johan@kernel.org> X-Mailer: git-send-email 2.51.2 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Make sure to drop the references taken when looking up the backend devices during vendor module unload. Fixes: bfc653aa89cb ("perf: arm_cspmu: Separate Arm and vendor module") Cc: stable@vger.kernel.org # 6.7 Cc: Besar Wicaksono Signed-off-by: Johan Hovold --- drivers/perf/arm_cspmu/arm_cspmu.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/perf/arm_cspmu/arm_cspmu.c b/drivers/perf/arm_cspmu/ar= m_cspmu.c index efa9b229e701..e0d4293f06f9 100644 --- a/drivers/perf/arm_cspmu/arm_cspmu.c +++ b/drivers/perf/arm_cspmu/arm_cspmu.c @@ -1365,8 +1365,10 @@ void arm_cspmu_impl_unregister(const struct arm_cspm= u_impl_match *impl_match) =20 /* Unbind the driver from all matching backend devices. */ while ((dev =3D driver_find_device(&arm_cspmu_driver.driver, NULL, - match, arm_cspmu_match_device))) + match, arm_cspmu_match_device))) { device_release_driver(dev); + put_device(dev); + } =20 mutex_lock(&arm_cspmu_lock); =20 --=20 2.51.2