Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::3:6 as permitted sender) client-ip=2620:137:e000::3:6;
Subject: Re: [PATCH v4 8/8] LoongArch: Add ORC stack unwinder support
To:     Huacai Chen <chenhuacai@kernel.org>
References: <1698048691-19521-1-git-send-email-yangtiezhu@loongson.cn>
 <1698048691-19521-9-git-send-email-yangtiezhu@loongson.cn>
 <CAAhV-H7yYYtBQ8=oxSjdn=Jnne8mUK17n_S6c6O1bLC4B7VVcg@mail.gmail.com>
Cc:     Josh Poimboeuf <jpoimboe@kernel.org>,
        Peter Zijlstra <peterz@infradead.org>,
        loongarch@lists.linux.dev, linux-kernel@vger.kernel.org,
        loongson-kernel@lists.loongnix.cn
From:   Tiezhu Yang <yangtiezhu@loongson.cn>
Message-ID: <4a516dcf-aac6-48c9-9082-ac812f313edc@loongson.cn>
Date:   Fri, 27 Oct 2023 17:25:33 +0800
User-Agent: Mozilla/5.0 (X11; Linux mips64; rv:45.0) Gecko/20100101
 Thunderbird/45.4.0
MIME-Version: 1.0
In-Reply-To: <CAAhV-H7yYYtBQ8=oxSjdn=Jnne8mUK17n_S6c6O1bLC4B7VVcg@mail.gmail.com>
Content-Type: text/plain; charset=utf-8; format=flowed
Content-Transfer-Encoding: 7bit
Precedence: bulk


On 10/27/2023 03:02 PM, Huacai Chen wrote:
> v3 works in most cases, v4 cannot work completely (stop at show_stack), why?

There are no obvious differences of this patch between v3 and v4.

> [   61.642993] Call Trace:
> [   61.642995] [<9000000002ad3808>] show_stack+0x40/0x17c

I can not reproduce the above issue with this patch unless remove
the option "-falign-functions" in arch/loongarch/Makefile, please
make sure the option "-falign-functions" is in your test code.

Thanks,
Tiezhu