From: Al Viro <viro@ZenIV•linux.org.uk>
To: Patrick McHardy <kaber@trash•net>
Cc: netdev@vger•kernel.org
Subject: Re: buggy check in netlink_mmap_sendmsg()
Date: Fri, 19 Jul 2013 16:45:56 +0100 [thread overview]
Message-ID: <20130719154556.GF4165@ZenIV.linux.org.uk> (raw)
In-Reply-To: <20130719153846.GB14764@macbook.localnet>
On Fri, Jul 19, 2013 at 05:38:46PM +0200, Patrick McHardy wrote:
> >From what I can tell, the second check should catch the second case you
> describe. If the address space is shared, dup_mmap() will invoke
> netlink_mmap_ops->open
See the check for CLONE_VM in copy_mm(); we do not call dup_mm() (which would
be calling dup_mmap()) in that case.
next prev parent reply other threads:[~2013-07-19 15:45 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-14 9:36 buggy check in netlink_mmap_sendmsg() Al Viro
2013-07-18 11:22 ` Patrick McHardy
2013-07-19 15:38 ` Patrick McHardy
2013-07-19 15:45 ` Al Viro [this message]
2013-07-19 15:52 ` Al Viro
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