From mboxrd@z Thu Jan  1 00:00:00 1970
From: james.morse@arm.com (James Morse)
Date: Fri, 19 Aug 2016 14:34:48 +0100
Subject: [PATCH] fixup! arm64: kdump: add kdump support
In-Reply-To: <20160819080020.GA584@localhost.localdomain>
References: <57B2E759.201@arm.com>
 <1471448011-20386-1-git-send-email-james.morse@arm.com>
 <20160819080020.GA584@localhost.localdomain>
Message-ID: <57B70AF8.1000603@arm.com>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org

On 19/08/16 09:00, Pratyush Anand wrote:
> On 17/08/2016:04:33:31 PM, James Morse wrote:
>> copy_oldmem_page() and mmap_vmcore() provide two ways for userspace to read
>> from /proc/vmcore. Neither of these check with memblock to see if the page
>> they are accessing is nomap. On Seattle this causes:
> 
> Thanks for the patch.It did resolve the kernel crash issue with makedumpfile,
> however neither there was any data in vmcore-dmesg nor crash utility was able to
> work the saved vmcore.

vmcore-dmesg doesn't work for me, but crash did once I'd rebuilt it from the
most recent source.

The most recent commit I have is:
b349598bb755 ("Fix for the ARM64 "bt -R <symbol>" option if the only reference")

Are you using an older version?


Thanks,

James


[0] http://lists.infradead.org/pipermail/linux-arm-kernel/2016-August/447597.html