From mboxrd@z Thu Jan  1 00:00:00 1970
From: panand@redhat.com (Pratyush Anand)
Date: Mon, 21 Mar 2016 15:54:23 +0530
Subject: [PATCH 2/2] arm64: Fix watchpoint recursion when single-step is
 wrongly triggered in irq
In-Reply-To: <1458549470-124791-2-git-send-email-hekuang@huawei.com>
References: <1458549470-124791-1-git-send-email-hekuang@huawei.com>
 <1458549470-124791-2-git-send-email-hekuang@huawei.com>
Message-ID: <20160321102423.GB15150@dhcppc6.redhat.com>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org

On 21/03/2016:08:37:50 AM, He Kuang wrote:
> On arm64, watchpoint handler enables single-step to bypass the next
> instruction for not recursive enter. If an irq is triggered right
> after the watchpoint, a single-step will be wrongly triggered in irq
> handler, which causes the watchpoint address not stepped over and
> system hang.

Does patch [1] resolves this issue as well? I hope it should. Patch[1] has still
not been sent for review. Your test result will be helpful.

~Pratyush

[1] https://github.com/pratyushanand/linux/commit/7623c8099ac22eaa00e7e0f52430f7a4bd154652