From: Sander Eikelenboom <linux@eikelenboom.it>
To: David Vrabel <david.vrabel@citrix.com>
Cc: Pekka Enberg <penberg@kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
linux-kernel <linux-kernel@vger.kernel.org>,
<xen-devel@lists.xen.org>,
Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Subject: Re: 3.15-rc3: boot of a xen PV guest fails when using a guest kernel with CONFIG_DEBUG_SLAB=y
Date: Tue, 6 May 2014 19:58:11 +0200 [thread overview]
Message-ID: <1029422291.20140506195811@eikelenboom.it> (raw)
In-Reply-To: <5368B088.8040206@citrix.com>
Tuesday, May 6, 2014, 11:51:04 AM, you wrote:
> On 02/05/14 22:01, Sander Eikelenboom wrote:
>> Hi,
>>
>> On a machine running Xen-Unstable, i just tried running a 3.15-rc3 kernel with
>> CONFIG_DEBUG_SLAB=y
>>
>> [ 0.748297] Kernel panic - not syncing: Out of memory and no killable processes...
>> [ 0.748297]
>> [ 0.748305] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.15.0-rc3-20140502-nbdebug12-slabdb+ #1
>> [ 0.748310] 00000000002040d0 ffff88000ee9fa48 ffffffff81b8da66 ffff88000ee9c010
>> [ 0.748317] ffffffff81f5a8a0 ffff88000ee9fac8 ffffffff81b89bfb 0000000000000000
>> [ 0.748325] ffffffff00000008 ffff88000ee9fad8 ffff88000ee9fa78 ffffffff811952fa
>> [ 0.748332] Call Trace:
>> [ 0.748336] [<ffffffff81b8da66>] dump_stack+0x46/0x58
>> [ 0.748340] [<ffffffff81b89bfb>] panic+0xd2/0x207
>> [ 0.748345] [<ffffffff811952fa>] ? out_of_memory+0x39a/0x5a0
>> [ 0.748350] [<ffffffff811954fe>] out_of_memory+0x59e/0x5a0
> Your guest is out of memory. Give it some more?
The guest has 512MB assigned to it and it worked fine with:
- SLAB without DEBUG_SLAB
- SLUB with and without DEBUG_SLUB
It ooms with:
- SLAB with DEBUG_SLAB
With 1024MB assigned it seems to boot fine in all cases, so it seems DEBUG_SLAB
is quite memory consuming when it fails in the first second of boot on 512MB.
--
Sander
> David
prev parent reply other threads:[~2014-05-06 17:58 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-02 21:01 Sander Eikelenboom
2014-05-06 9:51 ` David Vrabel
2014-05-06 17:58 ` Sander Eikelenboom [this message]
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