linux-kernel - Re: [PATCH] x86, kdump: Fix efi=noruntime NULL pointer dereference

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Message-ID: <1534309061.26284.17.camel@gmx.de>
Date:   Wed, 15 Aug 2018 06:57:41 +0200
From:   Mike Galbraith <efault@....de>
To:     Dave Young <dyoung@...hat.com>
Cc:     Baoquan He <bhe@...hat.com>,
        Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
        lkml <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] x86, kdump: Fix efi=noruntime NULL pointer dereference

On Wed, 2018-08-15 at 11:59 +0800, Dave Young wrote:
> > Does this improve things, and plug the no boot hole?
> 
> Would you mind to tune my patch with some acpi_rsdp checking and add
> some error message in case kexec load failure? Eg. suggest people to use
> append acpi_rsdp for noefi booting etc.

Yeah, -ENODEV is better than hanging, but not very informative.

> I'm still not very satisfied with the code cleanup..

Not surprising, I didn't like it much either (ergo interrogative).

	-Mike