linux-kernel - Re: [RFC Patch 6/6] Crash: Recognise slim coredumps and process new elf-note sections

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Message-ID: <20110527182210.GH8053@redhat.com>
Date:	Fri, 27 May 2011 14:22:10 -0400
From:	Vivek Goyal <vgoyal@...hat.com>
To:	"Eric W. Biederman" <ebiederm@...ssion.com>
Cc:	prasad@...ux.vnet.ibm.com,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	crash-utility@...hat.com, Andi Kleen <andi@...stfloor.org>,
	"Luck, Tony" <tony.luck@...el.com>, kexec@...ts.infradead.org,
	anderson@...hat.com, Wang Chao <wang.chao@...fujitsu.com>,
	Michael Holzheu <holzheu@...ux.vnet.ibm.com>,
	Mahesh Jagannath Salgaonkar <mahesh@...ux.vnet.ibm.com>
Subject: Re: [RFC Patch 6/6] Crash: Recognise slim coredumps and process new
 elf-note sections

On Fri, May 27, 2011 at 11:16:34AM -0700, Eric W. Biederman wrote:
> "K.Prasad" <prasad@...ux.vnet.ibm.com> writes:
> 
> > Crash: Recognise slim coredumps and process new elf-note sections
> >
> > The Linux kernel will begin to support SlimDump for certain types of crashes
> > and the 'crash' tool needs to recognise them. For these types of coredumps, it
> > need not lookout for usual elf-structures and start gdb. Also process new
> > elf-note sections that contain additional information about the crash.
> 
> I suppose patching crash make sense.
> 
> Unfortunately crash doesn't work on  99% of the  kernels I run so, so I
> stopped caring a while ago.

Are these patched kernels? Otherwise Dave Anderson is pretty good about
keeping crash running across multiple kernels.

For me it works just great. I recently analyzed a crash dump with
2.6.39-rc7 kernel. Dave is generally takes patches for crash for latest
upstream kernel changes.

Thanks
Vivek
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