D60162.diff
No OneTemporary
Actions

Size

711 B

Referenced Files

None

Subscribers

None

D60162.diff
View Options

	diff --git a/sys/kern/subr_epoch.c b/sys/kern/subr_epoch.c
	--- a/sys/kern/subr_epoch.c
	+++ b/sys/kern/subr_epoch.c
	@@ -192,7 +192,7 @@
	epoch_trace_report(const char *fmt, ...)
	{
	va_list ap;
	- struct stackentry se, *new;
	+ struct stackentry se, new, dup;

	stack_save(&se.se_stack);

	@@ -205,10 +205,13 @@
	bcopy(&se.se_stack, &new->se_stack, sizeof(struct stack));

	mtx_lock(&epoch_stacks_lock);
	- new = RB_INSERT(stacktree, &epoch_stacks, new);
	+ dup = RB_INSERT(stacktree, &epoch_stacks, new);
	mtx_unlock(&epoch_stacks_lock);
	- if (new != NULL)
	+ if (dup != NULL) {
	+ /* Lost a race; the other thread reports it. */
	free(new, M_STACK);
	+ return;
	+ }
	}

	va_start(ap, fmt);