On Fri, Aug 3, 2012 at 12:53 PM, Daniel P. Berrange <berra...@redhat.com> wrote: > From: "Daniel P. Berrange" <berra...@redhat.com> > > The following commit > > commit cf3f89214ef6a33fad60856bc5ffd7bb2fc4709b > Author: Daniel Lezcano <daniel.lezc...@free.fr> > Date: Wed Mar 28 14:42:51 2012 -0700 > > pidns: add reboot_pid_ns() to handle the reboot syscall > > introduced custom handling of the reboot() syscall when invoked > from a non-initial PID namespace. The intent was that a process > in a container can be allowed to keep CAP_SYS_BOOT and execute > reboot() to shutdown/reboot just their private container, rather > than the host. > > Unfortunately the kexec_load() syscall also relies on the > CAP_SYS_BOOT capability. So by allowing a container to keep > this capability to safely invoke reboot(), they mistakenly > also gain the ability to use kexec_load(). The solution is > to make kexec_load() return -EPERM if invoked from a PID > namespace that is not the initial namespace > > Signed-off-by: Daniel P. Berrange <berra...@redhat.com> > Cc: Serge Hallyn <serge.hal...@canonical.com> > Cc: Daniel Lezcano <daniel.lezc...@free.fr> > Cc: Michael Kerrisk <mtk.manpa...@gmail.com> > Cc: "Eric W. Biederman" <ebied...@xmission.com> > Cc: Tejun Heo <t...@kernel.org> > Cc: Oleg Nesterov <o...@redhat.com>
Why is this commit not marked for -stable? -- Thanks, //richard -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
