On Mon, Oct 21, 2019 at 05:12:55PM +0200, Oleg Nesterov wrote: > On 10/21, Oleg Nesterov wrote: > > > > On 10/14, Christian Brauner wrote: > > > > > > The child helper process on Linux posix_spawn must ensure that no signal > > > handlers are enabled, so the signal disposition must be either SIG_DFL > > > or SIG_IGN. However, it requires a sigprocmask to obtain the current > > > signal mask and at least _NSIG sigaction calls to reset the signal > > > handlers for each posix_spawn call > > > > Plus the caller has to block/unblock all signals around clone(VM|VFORK). > ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ > > just in case... I meant that posix_spawn() has to block/unblock, not its > caller. Yeah, I think that is what's currently happening. Christian
