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From: Qian Cai <cai@lca.pw>
To: lijiazi <jqqlijiazi@gmail.com>
Cc: Christoph Lameter <cl@linux.com>,
	Pekka Enberg <penberg@kernel.org>,
	David Rientjes <rientjes@google.com>,
	Joonsoo Kim <iamjoonsoo.kim@lge.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	lijiazi <lijiazi@xiaomi.com>,
	linux-mm@kvack.org
Subject: Re: [PATCH] slub: call BUG if next_object is not valid
Date: Fri, 3 Jan 2020 07:48:47 -0500	[thread overview]
Message-ID: <19578131-DF7A-486F-9198-B9294E04D450@lca.pw> (raw)
In-Reply-To: <cd5523acb8dd23f1b6d8f95a344f5aadb5b6b20c.1578017318.git.lijiazi@xiaomi.com>



> On Jan 3, 2020, at 6:17 AM, lijiazi <jqqlijiazi@gmail.com> wrote:
> 
> If current object's memory is corrupted, there is a high
> probability that next_objext stored in it will be rewritten as an
> illegal value. It's better to check next_object this time than to
> encounter a illegal pointer in next slub alloc like the following:

Rather than papering over the issue, the key to figure out is how was the current object memory corrupted?

  reply	other threads:[~2020-01-03 12:48 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-01-03 11:16 [PATCH] slub: call BUG if next_object is not valid lijiazi
2020-01-03 12:48 ` Qian Cai [this message]
2020-01-03 14:49   ` Christopher Lameter
2020-01-09 13:43     ` David Hildenbrand

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