From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.9 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS, T_DKIMWL_WL_HIGH,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id ACFECC04AB1 for ; Thu, 9 May 2019 19:07:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7C3A221744 for ; Thu, 9 May 2019 19:07:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1557428866; bh=m1pZ22Wjpkk0gzpexI86nF7WYg7MTrOzxz9HapU/iaI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=MbMqBrRiiFPFwrcpjxCOsc29pDwr32ijqbg5pCBBH55a23+MtVv01Zp9SB2P6lk6Y /3x3sj+OTiAkQZq9hhLVQ1SqdvSgwXLvtFSuky67H2mmEGCGWArSQ7XuhP3eoUsoEf CY9Pq9vR1F0Y1kxv8wM4if+bq/8LWhUobAq7PvKE= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727544AbfEITHp (ORCPT ); Thu, 9 May 2019 15:07:45 -0400 Received: from mail.kernel.org ([198.145.29.99]:37628 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727369AbfEISpj (ORCPT ); Thu, 9 May 2019 14:45:39 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 0A6C42182B; Thu, 9 May 2019 18:45:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1557427538; bh=m1pZ22Wjpkk0gzpexI86nF7WYg7MTrOzxz9HapU/iaI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=EV1l/bTYubAGPHVgmXwT6UO4z300/3Xi7uePXT6MmCBdkrz1i1TZ2guEoqGa4B/zV Y8H+HJCiFw7tekBfgQP8C0XRgY2kRvZcNoO3AL4u+tRTQjiENnAKdbrWYEfSVCAP+N 2Qtfy7CFPfjYE6c6DBUb3/TSdC1irF9ep36QXc7Q= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Stephen Hemminger , Dexuan Cui , Michael Kelley , "Sasha Levin (Microsoft)" Subject: [PATCH 4.14 02/42] Drivers: hv: vmbus: Remove the undesired put_cpu_ptr() in hv_synic_cleanup() Date: Thu, 9 May 2019 20:41:51 +0200 Message-Id: <20190509181252.944919162@linuxfoundation.org> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190509181252.616018683@linuxfoundation.org> References: <20190509181252.616018683@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Dexuan Cui commit a0033bd1eae4650b69be07c17cb87393da584563 upstream. With CONFIG_DEBUG_PREEMPT=y, the put_cpu_ptr() triggers an underflow warning in preempt_count_sub(). Fixes: 37cdd991fac8 ("vmbus: put related per-cpu variable together") Cc: stable@vger.kernel.org Cc: Stephen Hemminger Signed-off-by: Dexuan Cui Reviewed-by: Michael Kelley Signed-off-by: Sasha Levin (Microsoft) Signed-off-by: Greg Kroah-Hartman --- drivers/hv/hv.c | 1 - 1 file changed, 1 deletion(-) --- a/drivers/hv/hv.c +++ b/drivers/hv/hv.c @@ -356,7 +356,6 @@ int hv_synic_cleanup(unsigned int cpu) clockevents_unbind_device(hv_cpu->clk_evt, cpu); hv_ce_shutdown(hv_cpu->clk_evt); - put_cpu_ptr(hv_cpu); } hv_get_synint_state(HV_X64_MSR_SINT0 + VMBUS_MESSAGE_SINT,