D39942.diff
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	diff --git a/sys/kern/kern_sig.c b/sys/kern/kern_sig.c
	--- a/sys/kern/kern_sig.c
	+++ b/sys/kern/kern_sig.c
	@@ -3598,6 +3598,8 @@
	sigexit(struct thread *td, int sig)
	{
	struct proc *p = td->td_proc;
	+ const char *coreinfo;
	+ int rv;

	PROC_LOCK_ASSERT(p, MA_OWNED);
	proc_set_p2_wexit(p);
	@@ -3622,16 +3624,31 @@
	* XXX : Todo, as well as euid, write out ruid too
	* Note that coredump() drops proc lock.
	*/
	- if (coredump(td) == 0)
	+ rv = coredump(td);
	+ switch (rv) {
	+ case 0:
	sig \|= WCOREFLAG;
	+ coreinfo = " (core dumped)";
	+ break;
	+ case EFAULT:
	+ coreinfo = " (no core dump - bad address)";
	+ break;
	+ case EINVAL:
	+ coreinfo = " (no core dump - invalid argument)";
	+ break;
	+ case EFBIG:
	+ coreinfo = " (no core dump - too large)";
	+ break;
	+ default:
	+ coreinfo = " (no core dump - other error)";
	+ }
	if (kern_logsigexit)
	log(LOG_INFO,
	"pid %d (%s), jid %d, uid %d: exited on "
	"signal %d%s\n", p->p_pid, p->p_comm,
	p->p_ucred->cr_prison->pr_id,
	td->td_ucred->cr_uid,
	- sig &~ WCOREFLAG,
	- sig & WCOREFLAG ? " (core dumped)" : "");
	+ sig &~ WCOREFLAG, coreinfo);
	} else
	PROC_UNLOCK(p);
	exit1(td, 0, sig);