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SubjectRe: [PATCH 10/19] OpenRISC: System calls
Date
Jonas Bonn <jonas@southpole.se> writes:

> On Sun, 2011-06-19 at 17:09 +0200, richard -rw- weinberger wrote:
>> On Sun, Jun 19, 2011 at 1:43 PM, Jonas Bonn <jonas@southpole.se> wrote:
>> > +asmlinkage int _sys_vfork(struct pt_regs *regs)
>> > +{
>> > + /* This doesn't seem to work */
>> > +// return do_fork(CLONE_VFORK | CLONE_VM | SIGCHLD, regs->sp, regs, 0, NULL, NULL);
>>
>> Just being curious, why does that not work?
>
> Something about the CLONE_VM flag is breaking things... not sure what,

When "breaking" is a kernel oops or similar then you have a security
hole because CLONE_VM can be specified directly by user space in
clone()

So most likely you need to fix that anyways.

-Andi

--
ak@linux.intel.com -- Speaking for myself only


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