From: David Miller <davem@davemloft.net>
Date: Tue, 09 Sep 2008 21:48:29 -0700 (PDT)

quoted text
> The list iteration is:
> 
> 	list_for_each_entry_safe(x, tmp, &xfrm_state_gc_leftovers, gclist) {
> 		if ((long)(x->lastused - completed) > 0)
> 			break;
> 		xfrm_state_gc_destroy(x);
> 	}
> 
> And xfrm_state_gc_destroy() doesn't do a list_del(&x->gclist) or similar.

I'm now testing the following fix:

diff --git a/net/xfrm/xfrm_state.c b/net/xfrm/xfrm_state.c
index aaafcee..abbe270 100644
--- a/net/xfrm/xfrm_state.c
+++ b/net/xfrm/xfrm_state.c
@@ -423,6 +423,7 @@ static void xfrm_state_gc_task(struct work_struct *data)
 	list_for_each_entry_safe(x, tmp, &xfrm_state_gc_leftovers, gclist) {
 		if ((long)(x->lastused - completed) > 0)
 			break;
+		list_del(&x->gclist);
 		xfrm_state_gc_destroy(x);
 	}
 
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