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Re: [Xen-ia64-devel] [PATCH] Fix vulnerability of copy_to_user in PAL em

from [Tristan Gingold]

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To:	Isaku Yamahata <yamahata@xxxxxxxxxxxxx>
Subject:	Re: [Xen-ia64-devel] [PATCH] Fix vulnerability of copy_to_user in PAL emulation
From:	Tristan Gingold <tgingold@xxxxxxx>
Date:	Wed, 12 Dec 2007 06:30:45 +0100
Cc:	Alex Williamson <alex.williamson@xxxxxx>, xen-ia64-devel@xxxxxxxxxxxxxxxxxxx
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On Wed, Dec 12, 2007 at 02:12:41PM +0900, Isaku Yamahata wrote:
> On Wed, Dec 12, 2007 at 01:07:13PM +0900, Kouya Shimura wrote:
> 
> Shouldn't we call vcpu_increment_iip(v); unconditionally?
> If pal_emul() returns other than IA64_NO_FAULT,
> guest will issue the same break instruction again with same argument
> resulting in no forward progress.

Isn't it what it expected in case of TLB miss injection ?

Tristan.

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Re: [Xen-ia64-devel] [PATCH] Fix vulnerability of copy_to_user in PAL emulation, (continued) Re: [Xen-ia64-devel] [PATCH] Fix vulnerability of copy_to_user in PAL emulation, Kouya Shimura Re: [Xen-ia64-devel] [PATCH] Fix vulnerability of copy_to_user in PAL emulation, Alex Williamson Re: [Xen-ia64-devel] [PATCH] Fix vulnerability of copy_to_user in PAL emulation, Kouya Shimura Re: [Xen-ia64-devel] [PATCH] Fix vulnerability of copy_to_user in PAL emulation, Tristan Gingold Re: [Xen-ia64-devel] [PATCH] Fix vulnerability of copy_to_user in PAL emulation, Tristan Gingold Re: [Xen-ia64-devel] [PATCH] Fix vulnerability of copy_to_user in PAL emulation, Alex Williamson Re: [Xen-ia64-devel] [PATCH] Fix vulnerability of copy_to_user in PAL emulation, tgingold Re: [Xen-ia64-devel] [PATCH] Fix vulnerability of copy_to_user in PAL emulation, Isaku Yamahata Re: [Xen-ia64-devel] [PATCH] Fix vulnerability of copy_to_user in PAL emulation, Isaku Yamahata Re: [Xen-ia64-devel] [PATCH] Fix vulnerability of copy_to_user in PAL emulation, Kouya Shimura Re: [Xen-ia64-devel] [PATCH] Fix vulnerability of copy_to_user in PAL emulation, Tristan Gingold <=

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