Re: signalfd API issues (was Re: [PATCH/RFC] signal races/bugs, losing TIF_SIGPENDING and other woes)

On Wed, 2007-06-06 at 08:52 -0400, Jeff Dike wrote:
> On Wed, Jun 06, 2007 at 12:50:04PM +1000, Benjamin Herrenschmidt wrote:
> > Yeah, synchronous signals should probably never be delivered to another
> > process, even via signalfd. There's no point delivering a SEGV to
> > somebody else :-)
> 
> Sure there is.  UML does exactly that - intercepting child signals
> (including SEGV) with wait.

UML is definitely what I call a special case :-) Now the question is how
do you get them ? Are you via some code path I haven't figured out
calling dequeue_signal() from another context ?

Ben.


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References:
- Re: [PATCH/RFC] signal races/bugs, losing TIF_SIGPENDING and other woes
  - From: Davide Libenzi <[email protected]>
- Re: [PATCH/RFC] signal races/bugs, losing TIF_SIGPENDING and other woes
  - From: Benjamin Herrenschmidt <[email protected]>
- Re: [PATCH/RFC] signal races/bugs, losing TIF_SIGPENDING and other woes
  - From: Nicholas Miell <[email protected]>
- Re: [PATCH/RFC] signal races/bugs, losing TIF_SIGPENDING and other woes
  - From: Benjamin Herrenschmidt <[email protected]>
- Re: [PATCH/RFC] signal races/bugs, losing TIF_SIGPENDING and other woes
  - From: Nicholas Miell <[email protected]>
- Re: [PATCH/RFC] signal races/bugs, losing TIF_SIGPENDING and other woes
  - From: Davide Libenzi <[email protected]>
- Re: [PATCH/RFC] signal races/bugs, losing TIF_SIGPENDING and other woes
  - From: Nicholas Miell <[email protected]>
- Re: [PATCH/RFC] signal races/bugs, losing TIF_SIGPENDING and other woes
  - From: Davide Libenzi <[email protected]>
- signalfd API issues (was Re: [PATCH/RFC] signal races/bugs, losing TIF_SIGPENDING and other woes)
  - From: Nicholas Miell <[email protected]>
- Re: signalfd API issues (was Re: [PATCH/RFC] signal races/bugs, losing TIF_SIGPENDING and other woes)
  - From: Benjamin Herrenschmidt <[email protected]>
- Re: signalfd API issues (was Re: [PATCH/RFC] signal races/bugs, losing TIF_SIGPENDING and other woes)
  - From: Jeff Dike <[email protected]>

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