Re: [Xen-devel] [PATCH v3 2/2] xmalloc: add a Kconfig option to poison free pool memory

[Paul Durrant <Paul.Durrant@xxxxxxxxxx>]

> -----Original Message-----
> From: Jan Beulich <JBeulich@xxxxxxxx>
> Sent: 05 July 2019 15:52
> To: Paul Durrant <Paul.Durrant@xxxxxxxxxx>
> Cc: xen-devel@xxxxxxxxxxxxxxxxxxxx; Julien Grall <julien.grall@xxxxxxx>; 
> Andrew Cooper
> <Andrew.Cooper3@xxxxxxxxxx>; George Dunlap <George.Dunlap@xxxxxxxxxx>; Ian 
> Jackson
> <Ian.Jackson@xxxxxxxxxx>; Stefano Stabellini <sstabellini@xxxxxxxxxx>; Konrad 
> Rzeszutek Wilk
> <konrad.wilk@xxxxxxxxxx>; Tim (Xen.org) <tim@xxxxxxx>; Wei Liu <wl@xxxxxxx>
> Subject: Re: [PATCH v3 2/2] xmalloc: add a Kconfig option to poison free pool 
> memory
> 
> On 05.07.2019 16:48, Paul Durrant wrote:
> > This patch adds XMEM_POOL_POISON to the Kconfig DEBUG options. If set,
> > free blocks (greater than MIN_BLOCK_SIZE) will be poisoned with 0xAA
> > bytes which will then be verified when memory is subsequently allocated.
> > This can help in spotting heap corruption, particularly use-after-free.
> >
> > Signed-off-by: Paul Durrant <paul.durrant@xxxxxxxxxx>
> 
> Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>
> 
> (I'm pondering whether to add the suggested blank lines while
> committing.)

Oh, sorry. I forgot about that.

  Paul

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxxx
https://lists.xenproject.org/mailman/listinfo/xen-devel