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| author | Steffen Klassert <steffen.klassert@secunet.com> | 2014-03-12 09:43:17 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-03-12 15:31:18 -0400 |
| commit | 4a93f5095a628d812b0b30c16d7bacea1efd783c (patch) | |
| tree | 58d93f95f1e9a63cd0b1e052ddf2e32e0c7eb390 /net/core | |
| parent | 1f36fc74d87fd6b09d8326879882a60c5399fe29 (diff) | |
| download | linux-4a93f5095a628d812b0b30c16d7bacea1efd783c.tar.gz linux-4a93f5095a628d812b0b30c16d7bacea1efd783c.tar.bz2 linux-4a93f5095a628d812b0b30c16d7bacea1efd783c.zip | |
flowcache: Fix resource leaks on namespace exit.
We leak an active timer, the hotcpu notifier and all allocated
resources when we exit a namespace. Fix this by introducing a
flow_cache_fini() function where we release the resources before
we exit.
Fixes: ca925cf1534e ("flowcache: Make flow cache name space aware")
Reported-by: Jakub Kicinski <moorray3@wp.pl>
Tested-by: Jakub Kicinski <moorray3@wp.pl>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Fan Du <fan.du@windriver.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core')
| -rw-r--r-- | net/core/flow.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/net/core/flow.c b/net/core/flow.c index 102f8ea2eb6e..31cfb365e0c6 100644 --- a/net/core/flow.c +++ b/net/core/flow.c @@ -484,3 +484,22 @@ err: return -ENOMEM; } EXPORT_SYMBOL(flow_cache_init); + +void flow_cache_fini(struct net *net) +{ + int i; + struct flow_cache *fc = &net->xfrm.flow_cache_global; + + del_timer_sync(&fc->rnd_timer); + unregister_hotcpu_notifier(&fc->hotcpu_notifier); + + 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; +} +EXPORT_SYMBOL(flow_cache_fini); |