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net/flow: Fix potential memory leak 

While preparing net flow caches, once a fail may cause potential
memory leak , fix it.

Signed-off-by: Huajun Li <huajun.li.lee@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
huajun li 2011-09-27 22:51:39 +00:00 committed by David S. Miller
parent e6f8aa9b90
commit 6ccc3abdc9
1 changed files with 13 additions and 1 deletions
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14
net/core/flow.c
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@ -413,7 +413,7 @@ static int __init flow_cache_init(struct flow_cache *fc)
for_each_online_cpu(i) {
if (flow_cache_cpu_prepare(fc, i))
return -ENOMEM;
goto err;
}
fc->hotcpu_notifier = (struct notifier_block){
.notifier_call = flow_cache_cpu,
@ -426,6 +426,18 @@ static int __init flow_cache_init(struct flow_cache *fc)
add_timer(&fc->rnd_timer);
return 0;
err:
for_each_possible_cpu(i) {
struct flow_cache_percpu *fcp = per_cpu_ptr(fc->percpu, i);
kfree(fcp->hash_table);
fcp->hash_table = NULL;
}
free_percpu(fc->percpu);
fc->percpu = NULL;
return -ENOMEM;
}
static int __init flow_cache_init_global(void)