Messages in this thread | | | Date | Wed, 15 Dec 2010 07:52:35 +0530 | From | "Suzuki K. Poulose" <> | Subject | Re: [Patch 4/21] Make fill_psinfo generic |
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On Tue, 14 Dec 2010 07:55:00 -0800 Linus Torvalds <torvalds@linux-foundation.org> wrote:
> On Tue, Dec 14, 2010 at 2:01 AM, Suzuki K. Poulose <suzuki@in.ibm.com> wrote: > > + /* > > + * If we are dumping core for "another task" > > + * we can't use copy_from_user(). > > + */ > > + if (p->group_leader == current->group_leader) { > > This is totally bogus. "group_leader" has absolutely nothing to do > with whether the process shares the address space. It's about signal > sharing etc. > > The way to check whether they share the same address space is to check > whether "mm" is the same. >
OK. I will make use of the mm here.
Thanks Suzuki
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