[issue1844] gdb detach from vkernel causes vkernel to die with SIGILL
Samuel J. Greear
sjg at evilcode.net
Sat Sep 18 13:26:53 PDT 2010
On Sat, Sep 18, 2010 at 2:10 PM, Matthew Dillon
<dillon at apollo.backplane.com> wrote:
> : This is probably one of the I/O threads used by if_vke and if_vkd.
> : These threads are not counted as 'cpus' and do not have globaldata
>
> Ah, I think it must be the I/O thread taking a signal due to the GDB
> interactions. Those I/O threads absolutely cannot take signals, they
> will explode (the signals assume a globaldata context).
>
> I'm not sure how we can address this.
>
> -Matt
> Matthew Dillon
> <dillon at backplane.com>
>
Is it plausible to give all threads which don't have a real globaldata
context a shared fake globaldata context which the signal delivery
could check against?
Sam
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