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From: Vivek Goyal <vgoyal@in.ibm.com>
To: "Randy.Dunlap" <rddunlap@osdl.org>
Cc: Nagesh Sharyathi <sharyathi@in.ibm.com>,
	vgoyal@in.ibm.com, akpm@osdl.org, ebiederm@xmission.com,
	fastboot@lists.osdl.org, linux-kernel@vger.kernel.org,
	maneesh@in.ibm.com
Subject: Re: [Fastboot] Re: Kdump Testing
Date: Tue, 26 Apr 2005 14:24:48 +0530	[thread overview]
Message-ID: <20050426085448.GB4234@in.ibm.com> (raw)
In-Reply-To: <20050425160925.3a48adc5.rddunlap@osdl.org>

> 
> 2.6.12-rc2-mm3 reboots vmlinux-recover-UP on panic.
> (vmlinux-recover-SMP hangs during [early] reboot, but -UP
> goes further....)
> 
> (BTW, how does I do serial console from the second
> kernel...?  It has the drivers, but not the command
> line info?  TBD.)
> 


While pre-loading the capture kernel using kexec, you can specify the command
line options to second kernel using --append="". You must already be passing
the root device. Add you serial console parameters as well something like
--append="console=ttyS0, 38400"


> vmlinux-recover-UP gets to this point, hand-written,
> several lines missing:
> 
> kfree_debugcheck: bad ptr c3dbffb0h.  ( == %esi)
> kernel BUG at <bad filename>:23128!
> invalid operand: 0000 [#1]
> DEBUG_PAGEALLOC
> EIP is at kfree_debugcheck+0x45/0x50
> 
> Stack dump shows lots of ext3 cache and inode functions...
> 

Can you post a full serial console output of second kernel? That would help.

Thanks
Vivek


  reply	other threads:[~2005-04-26  8:54 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-04-23  3:30 Vivek Goyal
2005-04-25 12:15 ` Nagesh Sharyathi
2005-04-25 23:09   ` Randy.Dunlap
2005-04-26  8:54     ` Vivek Goyal [this message]
2005-04-27 16:46       ` Randy.Dunlap
2005-04-27 19:23       ` Randy.Dunlap
2005-04-28 11:44         ` Vivek Goyal
2005-04-28 16:11           ` Randy.Dunlap
2005-04-28 19:08             ` Eric W. Biederman
2005-04-29  3:08             ` [PATCH] Kdump docs Randy.Dunlap
2005-04-29  5:07               ` Vivek Goyal
2005-04-29 14:26                 ` [Fastboot] " Randy.Dunlap
2005-04-30  3:04                 ` [PATCH] Kdump doc. fix option typo Randy.Dunlap
  -- strict thread matches above, loose matches on Subject: below --
2005-04-22 10:46 Kdump Testing Nagesh Sharyathi
2005-04-22 12:32 ` [Fastboot] " Eric W. Biederman

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