Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:18 as permitted sender) client-ip=2620:137:e000::1:18;
Date:   Mon, 11 Apr 2022 20:45:24 +0200 (CEST)
From:   Richard Weinberger <richard@nod.at>
To:     Nathan Chancellor <nathan@kernel.org>
Cc:     Thorsten Leemhuis <regressions@leemhuis.info>,
        Zhen Lei <thunder.leizhen@huawei.com>,
        Jeff Dike <jdike@addtoit.com>,
        anton ivanov <anton.ivanov@cambridgegreys.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        Eduard-Gabriel Munteanu <maxdamage@aladin.ro>,
        linux-um <linux-um@lists.infradead.org>,
        linux-kernel <linux-kernel@vger.kernel.org>,
        Nick Desaulniers <ndesaulniers@google.com>,
        regressions <regressions@lists.linux.dev>
Message-ID: <1287561645.244713.1649702724736.JavaMail.zimbra@nod.at>
In-Reply-To: <YlRp9KR1mp3/4Txo@thelio-3990X>
References: <20210508032239.2177-1-thunder.leizhen@huawei.com> <Yjt31seiNv18HYrf@dev-arch.thelio-3990X> <1b03d888-cea3-3e6f-087f-daeb5642a975@leemhuis.info> <1087614384.239493.1649583213699.JavaMail.zimbra@nod.at> <YlRp9KR1mp3/4Txo@thelio-3990X>
Subject: Re: [PATCH 1/1] um: fix error return code in winch_tramp()
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 8BIT
Thread-Topic: fix error return code in winch_tramp()
Thread-Index: U06xC3VNSbJwBqt91Rla1kwYc9mhWA==
Precedence: bulk

----- Ursprüngliche Mail -----
> Von: "Nathan Chancellor" <nathan@kernel.org>
> I attempted to print out the error code but it seems like there is no
> output in the console after "reboot: System halted". If I add an
> unconditional print right before the call to os_set_fd_block(), I see it
> during start up but I do not see it during shutdown. Is there some way
> to see that console output during shutdown?

I think in this case the easiest way is attaching gdb with a breakpoint.

Thanks,
//richard