From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from baidu.com (mx24.baidu.com [111.206.215.185]) (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 A1B0526E703 for ; Thu, 13 Nov 2025 07:26:17 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=111.206.215.185 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763018780; cv=none; b=eM+PWeb1NI7Xp6kPrQMKwpPg174+er8LyWMP+6s0fxYYGzvFyKWma1rCRUnY1+DNbPPP5sWdaytpCBugMaphiJdfnIBZI7eTZap2hDsmdW+fdZGaHUj9dYcuptDIi1HdF/NzKpYDZU+HFrmj42yBi7hPX1X1/OwarryLbYvXzKQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763018780; c=relaxed/simple; bh=ZWMlLOiOczqtncEJNimB/h6YXggrduJt+hsdviU2L5E=; h=From:To:CC:Subject:Date:Message-ID:References:In-Reply-To: Content-Type:MIME-Version; b=YB8y5jKqYzLjG2wtOJ+rwInV+3vCRTZ5ikvpjHuglGe+wHMkHbZjMK3jb+m1ZslLy8jdmZeWl4S3pqVvErCToRDOzt/7/FuzSny3e9Fz2kJ/fh5hbfZRjGRWkJtd4yeqJS1+7dqIt0itdC1/i1negTrd/YDpwdOWlgFnmFId2zY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=baidu.com; spf=pass smtp.mailfrom=baidu.com; arc=none smtp.client-ip=111.206.215.185 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=baidu.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=baidu.com From: "Li,Rongqing" To: Leon Romanovsky CC: Jason Gunthorpe , "linux-rdma@vger.kernel.org" Subject: RE: [????] Re: [????] Re: [PATCH] RDMA/core: Prevent soft lockup during large user memory region cleanup Thread-Topic: [????] Re: [????] Re: [PATCH] RDMA/core: Prevent soft lockup during large user memory region cleanup Thread-Index: AQHcUtj831ZC0pfzsEqn3ZVqQ3Xs+LTs2g0AgACGXmCAATJ7gIABpL9Q Date: Thu, 13 Nov 2025 07:25:57 +0000 Message-ID: <7d7f66445da0443280c787cfdc243a22@baidu.com> References: <20251111070107.2627-1-lirongqing@baidu.com> <20251111120136.GP15456@unreal> <5a9e07930f134ff283d4a65373a62b85@baidu.com> <20251112141927.GE17382@unreal> In-Reply-To: <20251112141927.GE17382@unreal> Accept-Language: zh-CN, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Precedence: bulk X-Mailing-List: linux-rdma@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-FEAS-Client-IP: 172.31.50.46 X-FE-Policy-ID: 52:10:53:SYSTEM > > A user meet this lockup issue on ubuntu 22.04 kernel, after change > watchdog_thresh to 60, the soft lockup is disappeared. > > > > I think his program registered too many memory region(this program has > 400G memory), but the lockup should be fixed too. >=20 > So please add this information to next version together with change propo= sed > by Junxian. >=20 Ok, I will send v2 Thanks -Li