Messages in this thread | | | Date | Mon, 29 Oct 2007 14:15:40 -0700 | From | "Paul E. McKenney" <> | Subject | dn_route.c momentarily exiting RCU read-side critical section |
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Hello!
net/decnet/dn_route.c in dn_rt_cache_get_next() is as follows:
static struct dn_route *dn_rt_cache_get_next(struct seq_file *seq, struct dn_route *rt) { struct dn_rt_cache_iter_state *s = rcu_dereference(seq->private);
rt = rt->u.dst.dn_next; while(!rt) { rcu_read_unlock_bh(); if (--s->bucket < 0) break;
... But what happens if seq->private is freed up right here? ... Or what prevents this from happening?
rcu_read_lock_bh(); rt = dn_rt_hash_table[s->bucket].chain; } return rt; }
Similar code is in rt_cache_get_next().
So, what am I missing here?
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