On Fri, Aug 3, 2012 at 12:53 PM, Daniel P. Berrange <[email protected]> wrote: > From: "Daniel P. Berrange" <[email protected]> > > The following commit > > commit cf3f89214ef6a33fad60856bc5ffd7bb2fc4709b > Author: Daniel Lezcano <[email protected]> > 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 <[email protected]> > Cc: Serge Hallyn <[email protected]> > Cc: Daniel Lezcano <[email protected]> > Cc: Michael Kerrisk <[email protected]> > Cc: "Eric W. Biederman" <[email protected]> > Cc: Tejun Heo <[email protected]> > Cc: Oleg Nesterov <[email protected]>
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 [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
