Messages in this thread | | | Date | Mon, 24 Sep 2007 13:02:20 -0400 | From | Jeff Dike <> | Subject | Re: [PATCH] 2.6.22.6 user-mode linux: use address instead of value as argument in os_free_irq_by_cb |
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On Sat, Sep 22, 2007 at 12:39:55PM +0800, lepton wrote: > There is a bug in os_free_irq_by_cb, when the first element > of active_fds list is free, the value of active_fds is not > updated, just value in stack is updated.
Man, that sucks.
Nice spotting.
> > The intresting thing is that without this patch, a poweroff > in user mode linux guest will halt the host linux system.It > seems that after the tracing thread is dead, the syscall to > sys_reboot of the traced thread is executed by host. I don't > know if it is another bug.
I would say that you shouldn't be running UMLs as root. However, a sys_reboot shouldn't escape being ptraced either. This is a bug, but I don't see any connection between it and ptrace missing a final system call.
Jeff
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