From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from relay.hostedemail.com (smtprelay0011.hostedemail.com [216.40.44.11]) (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 20680363C52; Fri, 9 Jan 2026 16:38:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=216.40.44.11 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767976712; cv=none; b=tvQri8J1QYESujJYksvCLpncmhwbuFPIcOPpjsAvpLale7JTAX8DdvGyCUdJJk3316t3kvGm/v84LWmII9Q+hyU3k4HX4v7bH3rqQfp/A/qVP8ZQKGbymRyP112L2eubBgbgt7d4o+SmSc5bjMWY1b/2Q2Shop91L3RWox+Njjs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767976712; c=relaxed/simple; bh=dmKFEIvTIANp3SO/CLS13O5Zvtx8lCjW/ri81Wr0ex4=; h=Date:From:To:Cc:Subject:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=gvdSdiKPJNrRWdnAFbswqzezQLGRrnVnp7FCDaYQ54MZKSPfvZHIp7eDkRLfhRyWGtpnEWRpth1/Bj3q557itvLW9fzrJGu3cU2xta0Oe3q4r1WVBa5AEmOv2dgh/PwW+guFo5F4lsDjkc9tL6nBUuO768ns6zheLuqyofeItUk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=goodmis.org; spf=pass smtp.mailfrom=goodmis.org; arc=none smtp.client-ip=216.40.44.11 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=goodmis.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=goodmis.org Received: from omf18.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay01.hostedemail.com (Postfix) with ESMTP id 20B28D0367; Fri, 9 Jan 2026 16:38:23 +0000 (UTC) Received: from [HIDDEN] (Authenticated sender: rostedt@goodmis.org) by omf18.hostedemail.com (Postfix) with ESMTPA id 721892E; Fri, 9 Jan 2026 16:38:19 +0000 (UTC) Date: Fri, 9 Jan 2026 11:38:50 -0500 From: Steven Rostedt To: Yao Kai Cc: Joel Fernandes , , Boqun Feng , , Frederic Weisbecker , Neeraj Upadhyay , Josh Triplett , Uladzislau Rezki , Mathieu Desnoyers , Lai Jiangshan , Zqiang , Shuah Khan , , , Tengda Wu , , Subject: Re: [PATCH -next 1/8] rcu: Fix rcu_read_unlock() deadloop due to softirq Message-ID: <20260109113850.2133c5ff@gandalf.local.home> In-Reply-To: <20260105121611.470294d3@gandalf.local.home> References: <20260101163417.1065705-1-joelagnelf@nvidia.com> <20260101163417.1065705-2-joelagnelf@nvidia.com> <20260102122807.7025fc87@gandalf.local.home> <20260102123009.453dfb90@gandalf.local.home> <68b5b122-036b-475a-85bb-e39830f99fbe@paulmck-laptop> <252063db-ec72-42df-b9e0-b8dc0aa6bef9@nvidia.com> <34ff0ff6-217e-4574-a3b1-af74b2f40937@huawei.com> <20260105121611.470294d3@gandalf.local.home> X-Mailer: Claws Mail 3.20.0git84 (GTK+ 2.24.33; x86_64-pc-linux-gnu) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Stat-Signature: 7r5dcagmgp9pjb66ukftmfitb6wi5zya X-Rspamd-Server: rspamout04 X-Rspamd-Queue-Id: 721892E X-Session-Marker: 726F737465647440676F6F646D69732E6F7267 X-Session-ID: U2FsdGVkX1+Glua9WT8dBeoRtPcuIs5T4MXmiGY1yII= X-HE-Tag: 1767976699-987882 X-HE-Meta: U2FsdGVkX18fspqHkNQr67C4mhoZ9mX3Mj1qszS6VqDDUIcbrLPTTTNH3YwPb5dUNnv4rWpvx8Yr+E2MdrkZclDss5GuE/Uus3x2kRn4W5swl4X+Yn9H0DOL1zPQ9UreTRVTP5v2QFuv3M83d6pRSItxEl8YwMasKMpRQbIaCz3hO4xww96mBWrDg8iynWhHdoIRrLXMbY9rQSGoc8jbcpvjldmImAx1IHkmcoPFwOG7adUaI8h4UyL4Houmgqjyq0NDn2WQ3gVqNFCsoQqc9BbZKaUuQzi5hvCIPYNqt6xTrA0rOoXYOVyzH9uV7Vptpelsu3C2l3aRtn5kt+lJe0H6vUeIhWApycbhb9ItRIcUWlxcaZgVxcSqazgkdzcbh8IGcWXRpVZ8h40H7DOignbGkIx5ny/0II7rc4XZnTI= On Mon, 5 Jan 2026 12:16:11 -0500 Steven Rostedt wrote: > On Sun, 4 Jan 2026 11:20:07 +0800 > Yao Kai wrote: > > > Yes, I tested Steve's patch. It fixes the issue too. > > > > Tested-by: Yao Kai > > Thanks for testing. I'll send out a formal patch. > > And yes, I agree we should do both. FYI, the tracing recursion protection made it to mainline: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5f1ef0dfcb5b7f4a91a9b0e0ba533efd9f7e2cdb -- Steve