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author | 2017-10-22 13:36:53 +0100 | |
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committer | 2017-10-22 13:39:14 +0100 | |
commit | f8ddadc4db6c7b7029b6d0e0d9af24f74ad27ca2 (patch) | |
tree | 0a6432aba336bae42313613f4c891bcfce02bd4e /net/can | |
parent | Merge branch 'tun-timer-cleanups' (diff) | |
parent | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net (diff) | |
download | linux-f8ddadc4db6c7b7029b6d0e0d9af24f74ad27ca2.tar.gz linux-f8ddadc4db6c7b7029b6d0e0d9af24f74ad27ca2.tar.bz2 linux-f8ddadc4db6c7b7029b6d0e0d9af24f74ad27ca2.zip |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
There were quite a few overlapping sets of changes here.
Daniel's bug fix for off-by-ones in the new BPF branch instructions,
along with the added allowances for "data_end > ptr + x" forms
collided with the metadata additions.
Along with those three changes came veritifer test cases, which in
their final form I tried to group together properly. If I had just
trimmed GIT's conflict tags as-is, this would have split up the
meta tests unnecessarily.
In the socketmap code, a set of preemption disabling changes
overlapped with the rename of bpf_compute_data_end() to
bpf_compute_data_pointers().
Changes were made to the mv88e6060.c driver set addr method
which got removed in net-next.
The hyperv transport socket layer had a locking change in 'net'
which overlapped with a change of socket state macro usage
in 'net-next'.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/can')
-rw-r--r-- | net/can/af_can.c | 20 | ||||
-rw-r--r-- | net/can/bcm.c | 5 |
2 files changed, 19 insertions, 6 deletions
diff --git a/net/can/af_can.c b/net/can/af_can.c index 1f75e11ac35a..003b2d6d655f 100644 --- a/net/can/af_can.c +++ b/net/can/af_can.c @@ -78,7 +78,7 @@ MODULE_PARM_DESC(stats_timer, "enable timer for statistics (default:on)"); static struct kmem_cache *rcv_cache __read_mostly; /* table of registered CAN protocols */ -static const struct can_proto *proto_tab[CAN_NPROTO] __read_mostly; +static const struct can_proto __rcu *proto_tab[CAN_NPROTO] __read_mostly; static DEFINE_MUTEX(proto_tab_lock); static atomic_t skbcounter = ATOMIC_INIT(0); @@ -788,7 +788,7 @@ int can_proto_register(const struct can_proto *cp) mutex_lock(&proto_tab_lock); - if (proto_tab[proto]) { + if (rcu_access_pointer(proto_tab[proto])) { pr_err("can: protocol %d already registered\n", proto); err = -EBUSY; } else @@ -812,7 +812,7 @@ void can_proto_unregister(const struct can_proto *cp) int proto = cp->protocol; mutex_lock(&proto_tab_lock); - BUG_ON(proto_tab[proto] != cp); + BUG_ON(rcu_access_pointer(proto_tab[proto]) != cp); RCU_INIT_POINTER(proto_tab[proto], NULL); mutex_unlock(&proto_tab_lock); @@ -875,9 +875,14 @@ static int can_pernet_init(struct net *net) spin_lock_init(&net->can.can_rcvlists_lock); net->can.can_rx_alldev_list = kzalloc(sizeof(struct dev_rcv_lists), GFP_KERNEL); - + if (!net->can.can_rx_alldev_list) + goto out; net->can.can_stats = kzalloc(sizeof(struct s_stats), GFP_KERNEL); + if (!net->can.can_stats) + goto out_free_alldev_list; net->can.can_pstats = kzalloc(sizeof(struct s_pstats), GFP_KERNEL); + if (!net->can.can_pstats) + goto out_free_can_stats; if (IS_ENABLED(CONFIG_PROC_FS)) { /* the statistics are updated every second (timer triggered) */ @@ -892,6 +897,13 @@ static int can_pernet_init(struct net *net) } return 0; + + out_free_can_stats: + kfree(net->can.can_stats); + out_free_alldev_list: + kfree(net->can.can_rx_alldev_list); + out: + return -ENOMEM; } static void can_pernet_exit(struct net *net) diff --git a/net/can/bcm.c b/net/can/bcm.c index 47a8748d953a..13690334efa3 100644 --- a/net/can/bcm.c +++ b/net/can/bcm.c @@ -1493,13 +1493,14 @@ static int bcm_init(struct sock *sk) static int bcm_release(struct socket *sock) { struct sock *sk = sock->sk; - struct net *net = sock_net(sk); + struct net *net; struct bcm_sock *bo; struct bcm_op *op, *next; - if (sk == NULL) + if (!sk) return 0; + net = sock_net(sk); bo = bcm_sk(sk); /* remove bcm_ops, timer, rx_unregister(), etc. */ |