Re: [PATCH v3] kernel/signal: Signal-based pre-coredump notification

Hi, Oleg: On 10/24/18 7:02 AM, Oleg Nesterov wrote: > On 10/23, Enke Chen wrote: >> >> --- a/fs/coredump.c >> +++ b/fs/coredump.c >> @@ -590,6 +590,12 @@ void do_coredump(const kernel_siginfo_t *siginfo) >> if (retval < 0) >> goto fail_creds; >> >> +/* >> + * Send the pre

Re: [PATCH v3] kernel/signal: Signal-based pre-coredump notification

On 10/23, Enke Chen wrote: > > --- a/fs/coredump.c > +++ b/fs/coredump.c > @@ -590,6 +590,12 @@ void do_coredump(const kernel_siginfo_t *siginfo) > if (retval < 0) > goto fail_creds; > > + /* > + * Send the pre-coredump signal to the parent if requested. > + */ > +

[PATCH v3] kernel/signal: Signal-based pre-coredump notification

For simplicity and consistency, this patch provides an implementation for signal-based fault notification prior to the coredump of a child process. A new prctl command, PR_SET_PREDUMP_SIG, is defined that can be used by an application to express its interest and to specify the signal for such a not