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[209.132.180.67]) by mx.google.com with ESMTP id z21si3460585ejw.229.2019.09.27.15.30.11; Fri, 27 Sep 2019 15:30:36 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=fail header.i=@infradead.org header.s=bombadil.20170209 header.b=mXieyfst; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728252AbfI0W1W (ORCPT + 99 others); Fri, 27 Sep 2019 18:27:22 -0400 Received: from bombadil.infradead.org ([198.137.202.133]:47374 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726036AbfI0W1W (ORCPT ); Fri, 27 Sep 2019 18:27:22 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=In-Reply-To:Content-Type:MIME-Version :References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=hskLe/Bp8cWuCbbgML94FyPb3sNJrJ8yv5rcDQ0yZxI=; b=mXieyfstUPkSz9gu9ILvCrV8m s809gnuYR7WRtFvgNJJupj47xehs8WwBXanqHxMaIn94K8gmlUzL/VoxypedW9rdWLOqsvPhZ5+kK jgQcaf5hf0RZ96J15EbAD5GwlmVG2HmAcOEMNSPE5FC1PxSkYQ2i6nUTOpQJkIUxXfKASgGXcCjg5 clbRVnryMx1+aWKxYLhL9PWKvJUrFaKODs79/2PEn5YyXpDp4YVjDREIKPTJKmc8cIJKm2Vh92zYE 3Az95jqgq8DtUVfX5Zi1pc4PFZM5wRi+j4RNqweei3mbfsCyyQnkVSq/NbQg0/xVFdIgnabl0/DUs Y2NXqfKMg==; Received: from hch by bombadil.infradead.org with local (Exim 4.92.2 #3 (Red Hat Linux)) id 1iDyhu-0004O8-1H; Fri, 27 Sep 2019 22:27:22 +0000 Date: Fri, 27 Sep 2019 15:27:22 -0700 From: Christoph Hellwig To: Vincent Chen Cc: linux-riscv@lists.infradead.org, palmer@sifive.com, linux-kernel@vger.kernel.org, aou@eecs.berkeley.edu, paul.walmsley@sifive.com Subject: Re: [PATCH 2/4] rsicv: avoid sending a SIGTRAP to a user thread trapped in WARN() Message-ID: <20190927222722.GG4700@infradead.org> References: <1569199517-5884-1-git-send-email-vincent.chen@sifive.com> <1569199517-5884-3-git-send-email-vincent.chen@sifive.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1569199517-5884-3-git-send-email-vincent.chen@sifive.com> User-Agent: Mutt/1.12.1 (2019-06-15) X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Sep 23, 2019 at 08:45:15AM +0800, Vincent Chen wrote: > On RISC-V, when the kernel runs code on behalf of a user thread, and the > kernel executes a WARN() or WARN_ON(), the user thread will be sent > a bogus SIGTRAP. Fix the RISC-V kernel code to not send a SIGTRAP when > a WARN()/WARN_ON() is executed. > > Signed-off-by: Vincent Chen Looks good, Reviewed-by: Christoph Hellwig