On Tue, Sep 24, 2024 at 08:36:35PM +0200, Oleg Nesterov wrote: > > So what does this patch try to do? Note that unhandled_signal(tsk) returns true > if is_global_init(tsk). > > So it seems that this patch just tries to bypass the show_unhandled_signals and > __ratelimit() checks? Or what? > Yes, this patch just try to bypass the show_unhandled_signals and __ratelimit() checks for the global init. > > OTOH. The is_global_init() check in unhandled_signal() (which predates the git > history) doesn't look right to me. If init has a handler for, say, SIGSEGV, why > should the kernel complain? I need to recheck this logic... > I think the orignal logic is the signal sent to the global init is regarded as unhandled becuase it has SIGNAL_UNKILLABLE feature. Thanks Qiwu
