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| author | Jakub Kicinski <kuba@kernel.org> | 2021-11-30 05:04:10 +0100 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2021-11-30 05:04:11 +0100 |
| commit | 5fdc2333e6c3e7ef8b98295024bef27f8edf9202 (patch) | |
| tree | 9eac36a23537e1927c3b4e76ccbc2523996da321 /net | |
| parent | Merge branch 'wireguard-siphash-patches-for-5-16-rc6' (diff) | |
| parent | rxrpc: Fix rxrpc_local leak in rxrpc_lookup_peer() (diff) | |
| download | linux-5fdc2333e6c3e7ef8b98295024bef27f8edf9202.tar.xz linux-5fdc2333e6c3e7ef8b98295024bef27f8edf9202.zip | |
Merge tag 'rxrpc-fixes-20211129' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs
David Howells says:
====================
rxrpc: Leak fixes
Here are a couple of fixes for leaks in AF_RXRPC:
(1) Fix a leak of rxrpc_peer structs in rxrpc_look_up_bundle().
(2) Fix a leak of rxrpc_local structs in rxrpc_lookup_peer().
* tag 'rxrpc-fixes-20211129' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs:
rxrpc: Fix rxrpc_local leak in rxrpc_lookup_peer()
rxrpc: Fix rxrpc_peer leak in rxrpc_look_up_bundle()
====================
Link: https://lore.kernel.org/r/163820097905.226370.17234085194655347888.stgit@warthog.procyon.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net')
| -rw-r--r-- | net/rxrpc/conn_client.c | 14 | ||||
| -rw-r--r-- | net/rxrpc/peer_object.c | 14 |
2 files changed, 18 insertions, 10 deletions
diff --git a/net/rxrpc/conn_client.c b/net/rxrpc/conn_client.c index dbea0bfee48e..8120138dac01 100644 --- a/net/rxrpc/conn_client.c +++ b/net/rxrpc/conn_client.c @@ -135,16 +135,20 @@ struct rxrpc_bundle *rxrpc_get_bundle(struct rxrpc_bundle *bundle) return bundle; } +static void rxrpc_free_bundle(struct rxrpc_bundle *bundle) +{ + rxrpc_put_peer(bundle->params.peer); + kfree(bundle); +} + void rxrpc_put_bundle(struct rxrpc_bundle *bundle) { unsigned int d = bundle->debug_id; unsigned int u = atomic_dec_return(&bundle->usage); _debug("PUT B=%x %u", d, u); - if (u == 0) { - rxrpc_put_peer(bundle->params.peer); - kfree(bundle); - } + if (u == 0) + rxrpc_free_bundle(bundle); } /* @@ -328,7 +332,7 @@ static struct rxrpc_bundle *rxrpc_look_up_bundle(struct rxrpc_conn_parameters *c return candidate; found_bundle_free: - kfree(candidate); + rxrpc_free_bundle(candidate); found_bundle: rxrpc_get_bundle(bundle); spin_unlock(&local->client_bundles_lock); diff --git a/net/rxrpc/peer_object.c b/net/rxrpc/peer_object.c index 68396d052052..0298fe2ad6d3 100644 --- a/net/rxrpc/peer_object.c +++ b/net/rxrpc/peer_object.c @@ -299,6 +299,12 @@ static struct rxrpc_peer *rxrpc_create_peer(struct rxrpc_sock *rx, return peer; } +static void rxrpc_free_peer(struct rxrpc_peer *peer) +{ + rxrpc_put_local(peer->local); + kfree_rcu(peer, rcu); +} + /* * Set up a new incoming peer. There shouldn't be any other matching peers * since we've already done a search in the list from the non-reentrant context @@ -365,7 +371,7 @@ struct rxrpc_peer *rxrpc_lookup_peer(struct rxrpc_sock *rx, spin_unlock_bh(&rxnet->peer_hash_lock); if (peer) - kfree(candidate); + rxrpc_free_peer(candidate); else peer = candidate; } @@ -420,8 +426,7 @@ static void __rxrpc_put_peer(struct rxrpc_peer *peer) list_del_init(&peer->keepalive_link); spin_unlock_bh(&rxnet->peer_hash_lock); - rxrpc_put_local(peer->local); - kfree_rcu(peer, rcu); + rxrpc_free_peer(peer); } /* @@ -457,8 +462,7 @@ void rxrpc_put_peer_locked(struct rxrpc_peer *peer) if (n == 0) { hash_del_rcu(&peer->hash_link); list_del_init(&peer->keepalive_link); - rxrpc_put_local(peer->local); - kfree_rcu(peer, rcu); + rxrpc_free_peer(peer); } } |