D40976.diff
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	diff --git a/cddl/contrib/opensolaris/lib/libdtrace/common/dt_proc.c b/cddl/contrib/opensolaris/lib/libdtrace/common/dt_proc.c
	--- a/cddl/contrib/opensolaris/lib/libdtrace/common/dt_proc.c
	+++ b/cddl/contrib/opensolaris/lib/libdtrace/common/dt_proc.c
	@@ -685,9 +685,19 @@
	break;
	}

	- if (Pstate(P) != PS_UNDEAD && Psetrun(P, 0, 0) == -1) {
	- dt_dprintf("pid %d: failed to set running: %s\n",
	- (int)dpr->dpr_pid, strerror(errno));
	+ if (Pstate(P) != PS_UNDEAD) {
	+ if (dpr->dpr_quit && (proc_getflags(P) & PR_KLC)) {
	+ /*
	+ * We're about to kill the child, so don't
	+ * bother resuming it. In some cases, such as
	+ * an initialization error, we shouldn't have
	+ * started it in the first place, so letting it
	+ * run could be harmful.
	+ */
	+ } else if (Psetrun(P, 0, 0) == -1) {
	+ dt_dprintf("pid %d: failed to set running: "
	+ "%s\n", (int)dpr->dpr_pid, strerror(errno));
	+ }
	}

	(void) pthread_mutex_unlock(&dpr->dpr_lock);