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=1794060876; b=4ZUVI0537CnZFtojrf7K/f+RsVwW9Au50pT59nAyApbr4lJaqqkHqX2N2J8aBW2nI8Ym fLlC9A+60dWO6s/9XVF4JjmYDNfFCM0kuaqyp80+sja40HqYxDIqEdhCq6Hi6zgCN84Wp ZVcBLr6OwBTlTYzBZd8znCBQ5pMRxAFpghb3TW57N/npnkCIInoa7DyygLgv0hOvC+Wvq cop3m0/EnXRVkU6zBtdmHXfnsukdy54ADZKMOV0w0ucwIZqwwM2YMPMQVInZq48BVcgaq g2uYwHCWETxRrgWbfxAduCZni0mzfnAwYiDfaLdeoXRGikjYFEsaNFf3PEiZw1IaKTg== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794060876; h=Received:DKIM-Signature:From:To:Cc:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:User-Agent:X-stable:X-Patchwork-Hint: MIME-Version:Content-Transfer-Encoding; bh=Y96oaP1SK8IE0/P2SdvCnhu6tJuPG7Q7WLD5wn5x91w=; b=J/6KQ+V7dCczM+6YC0Xte7boAU3D4s6DcWW24nKM3uiKRciS8YLwYxbr1C0UVws0S9ZT BhpO1PJfIREMTlcJExLuPhtHF26/aM24WabLRCKmKEBxi5kBw886uOYFZ6jpI1IkPSf7p SLYEKcz9fHmdJqeT9SEO20yDDYi2YR+MNKHOX/rU+/JVWxbwnFqoBgmXKzoHDoPrzCPLD ZSlY2itWnUpHDRHnQikugHv0s5E5jRFnFS35zMzeKVWuszBpKKk3SYaBi9yemkAxv9OnG nDn2QgefQwa/DHoEJQAsJubTolEDk/tmJA78E4QQRMpwZgl2pUTkof8FOYzsjnZad+Q== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b="cjlM/V+O"; 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 01CD7606A33A; Sat, 7 Nov 2026 14:14:36 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=cjlM/V+O Received: by smtp.kernel.org (Postfix) with ESMTPSA id A29981F008A3; Sat, 7 Nov 2026 14:14:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1794060875; bh=Y96oaP1SK8IE0/P2SdvCnhu6tJuPG7Q7WLD5wn5x91w=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=cjlM/V+OGSRMcCLfCDioXhHeciOfguaWGLHGjx4ILNstx5KukXN0uExg+znb5SaW/ +J/tD3YUnfP0ArkUYEJjlpiWxn6Y2IMRQrZ/E5CkJfNhwCQVcos+P5aQkOHZ3P240h hFX2Kbb5EincYwWC3W3dXVPGffseOZHWSWNttfzA= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Geetha sowjanya , Will Deacon , Sasha Levin Subject: [PATCH 6.12 0249/1536] perf: marvell: Cancel CN10K DDR PMU hrtimer on device remove Date: Sat, 7 Nov 2026 08:37:45 -0500 Message-ID: <20261107135004.676228997@linuxfoundation.org> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261107134957.653319350@linuxfoundation.org> References: <20261107134957.653319350@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore X-Mailing-List: stable@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 6.12-stable review patch. If anyone has any objections, please let me know. ------------------ From: Geetha sowjanya [ Upstream commit 7dbcb0268d1e2a1d3badb0c6e77ee70e550b1787 ] cn10k_ddr_perf_remove() did not cancel the poll hrtimer before returning. If the device was unbound while perf events were still active the timer callback could run post-free. To fix the issue by adding hrtimer_cancel() in remove(). Signed-off-by: Geetha sowjanya Signed-off-by: Will Deacon Signed-off-by: Sasha Levin --- drivers/perf/marvell_cn10k_ddr_pmu.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/perf/marvell_cn10k_ddr_pmu.c b/drivers/perf/marvell_cn10k_ddr_pmu.c index 94f1ebcd2a275..8687ddec7d98b 100644 --- a/drivers/perf/marvell_cn10k_ddr_pmu.c +++ b/drivers/perf/marvell_cn10k_ddr_pmu.c @@ -701,6 +701,12 @@ static void cn10k_ddr_perf_remove(struct platform_device *pdev) { struct cn10k_ddr_pmu *ddr_pmu = platform_get_drvdata(pdev); + /* + * Cancel the poll timer before further teardown so the handler + * cannot run after this function returns. + */ + hrtimer_cancel(&ddr_pmu->hrtimer); + cpuhp_state_remove_instance_nocalls( CPUHP_AP_PERF_ARM_MARVELL_CN10K_DDR_ONLINE, &ddr_pmu->node); -- 2.53.0