[NEIGH] Print stack trace in neigh_add_timer
Stack traces are very helpful in determining the exact nature of a bug. So let's print a stack trace when the timer is added twice. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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@ -732,6 +732,7 @@ static inline void neigh_add_timer(struct neighbour *n, unsigned long when)
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if (unlikely(mod_timer(&n->timer, when))) {
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printk("NEIGH: BUG, double timer add, state is %x\n",
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n->nud_state);
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dump_stack();
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}
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}
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