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Nest: fixed a race-condition between import and export

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There was a leaking stack pointer to the global memory.
Fixed by making that temporary structure thread local static.
This commit is contained in:
Maria Matejka 2024-12-10 10:52:52 +01:00
parent 77a4b21365
commit bc15f0b9c7
1 changed files with 2 additions and 4 deletions
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6
nest/rt-table.c
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@ -1964,10 +1964,8 @@ rte_recalculate(struct rtable_private *table, struct rt_import_hook *c, struct n
}
/* We need to add a spinlock sentinel to the beginning */
struct rte_storage local_sentinel = {
.flags = REF_OBSOLETE,
.next = old_best_stored,
};
_Thread_local static struct rte_storage local_sentinel = { .flags = REF_OBSOLETE, };
atomic_store_explicit(&local_sentinel.next, old_best_stored, memory_order_release);
atomic_store_explicit(&net->routes, &local_sentinel, memory_order_release);
/* Mark also the old route as obsolete. */