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Merge git://bedivere.hansenpartnership.com/git/scsi-rc-fixes-2.6 

* git://bedivere.hansenpartnership.com/git/scsi-rc-fixes-2.6:
  [SCSI] 3w-9xxx: fix iommu_iova leak
  [SCSI] cxgb3i: convert cdev->l2opt to use rcu to prevent NULL dereference
  [SCSI] scsi: qla4xxx needs libiscsi.o
  [SCSI] libsas: fix failure to revalidate domain for anything but the first expander child.
  [SCSI] aacraid: reset should disable MSI interrupt
This commit is contained in:
Linus Torvalds 2011-09-28 08:23:39 -07:00
parent c54a06d45a 96067723e4
commit 07117e3054
9 changed files with 54 additions and 20 deletions
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10
drivers/infiniband/hw/cxgb3/iwch_cm.c
View File

@ -287,7 +287,7 @@ void __free_ep(struct kref *kref)
if (test_bit(RELEASE_RESOURCES, &ep->com.flags)) {
cxgb3_remove_tid(ep->com.tdev, (void *)ep, ep->hwtid);
dst_release(ep->dst);
l2t_release(L2DATA(ep->com.tdev), ep->l2t);
l2t_release(ep->com.tdev, ep->l2t);
}
kfree(ep);
}
@ -1178,7 +1178,7 @@ static int act_open_rpl(struct t3cdev *tdev, struct sk_buff *skb, void *ctx)
release_tid(ep->com.tdev, GET_TID(rpl), NULL);
cxgb3_free_atid(ep->com.tdev, ep->atid);
dst_release(ep->dst);
l2t_release(L2DATA(ep->com.tdev), ep->l2t);
l2t_release(ep->com.tdev, ep->l2t);
put_ep(&ep->com);
return CPL_RET_BUF_DONE;
}
@ -1377,7 +1377,7 @@ static int pass_accept_req(struct t3cdev *tdev, struct sk_buff *skb, void *ctx)
if (!child_ep) {
printk(KERN_ERR MOD "%s - failed to allocate ep entry!\n",
__func__);
l2t_release(L2DATA(tdev), l2t);
l2t_release(tdev, l2t);
dst_release(dst);
goto reject;
}
@ -1956,7 +1956,7 @@ int iwch_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
if (!err)
goto out;
l2t_release(L2DATA(h->rdev.t3cdev_p), ep->l2t);
l2t_release(h->rdev.t3cdev_p, ep->l2t);
fail4:
dst_release(ep->dst);
fail3:
@ -2127,7 +2127,7 @@ int iwch_ep_redirect(void *ctx, struct dst_entry *old, struct dst_entry *new,
PDBG("%s ep %p redirect to dst %p l2t %p\n", __func__, ep, new,
l2t);
dst_hold(new);
l2t_release(L2DATA(ep->com.tdev), ep->l2t);
l2t_release(ep->com.tdev, ep->l2t);
ep->l2t = l2t;
dst_release(old);
ep->dst = new;

23
drivers/net/cxgb3/cxgb3_offload.c
View File

@ -1146,12 +1146,14 @@ static void cxgb_redirect(struct dst_entry *old, struct dst_entry *new)
if (te && te->ctx && te->client && te->client->redirect) {
update_tcb = te->client->redirect(te->ctx, old, new, e);
if (update_tcb) {
rcu_read_lock();
l2t_hold(L2DATA(tdev), e);
rcu_read_unlock();
set_l2t_ix(tdev, tid, e);
}
}
}
l2t_release(L2DATA(tdev), e);
l2t_release(tdev, e);
}
/*
@ -1264,7 +1266,7 @@ int cxgb3_offload_activate(struct adapter *adapter)
goto out_free;
err = -ENOMEM;
L2DATA(dev) = t3_init_l2t(l2t_capacity);
RCU_INIT_POINTER(dev->l2opt, t3_init_l2t(l2t_capacity));
if (!L2DATA(dev))
goto out_free;
@ -1298,16 +1300,24 @@ int cxgb3_offload_activate(struct adapter *adapter)
out_free_l2t:
t3_free_l2t(L2DATA(dev));
L2DATA(dev) = NULL;
rcu_assign_pointer(dev->l2opt, NULL);
out_free:
kfree(t);
return err;
}
static void clean_l2_data(struct rcu_head *head)
{
struct l2t_data *d = container_of(head, struct l2t_data, rcu_head);
t3_free_l2t(d);
}
void cxgb3_offload_deactivate(struct adapter *adapter)
{
struct t3cdev *tdev = &adapter->tdev;
struct t3c_data *t = T3C_DATA(tdev);
struct l2t_data *d;
remove_adapter(adapter);
if (list_empty(&adapter_list))
@ -1315,8 +1325,11 @@ void cxgb3_offload_deactivate(struct adapter *adapter)
free_tid_maps(&t->tid_maps);
T3C_DATA(tdev) = NULL;
t3_free_l2t(L2DATA(tdev));
L2DATA(tdev) = NULL;
rcu_read_lock();
d = L2DATA(tdev);
rcu_read_unlock();
rcu_assign_pointer(tdev->l2opt, NULL);
call_rcu(&d->rcu_head, clean_l2_data);
if (t->nofail_skb)
kfree_skb(t->nofail_skb);
kfree(t);

15
drivers/net/cxgb3/l2t.c
View File

@ -300,14 +300,21 @@ static inline void reuse_entry(struct l2t_entry *e, struct neighbour *neigh)
struct l2t_entry *t3_l2t_get(struct t3cdev *cdev, struct neighbour *neigh,
struct net_device *dev)
{
struct l2t_entry *e;
struct l2t_data *d = L2DATA(cdev);
struct l2t_entry *e = NULL;
struct l2t_data *d;
int hash;
u32 addr = *(u32 *) neigh->primary_key;
int ifidx = neigh->dev->ifindex;
int hash = arp_hash(addr, ifidx, d);
struct port_info *p = netdev_priv(dev);
int smt_idx = p->port_id;
rcu_read_lock();
d = L2DATA(cdev);
if (!d)
goto done_rcu;
hash = arp_hash(addr, ifidx, d);
write_lock_bh(&d->lock);
for (e = d->l2tab[hash].first; e; e = e->next)
if (e->addr == addr && e->ifindex == ifidx &&
@ -338,6 +345,8 @@ struct l2t_entry *t3_l2t_get(struct t3cdev *cdev, struct neighbour *neigh,
}
done:
write_unlock_bh(&d->lock);
done_rcu:
rcu_read_unlock();
return e;
}

16
drivers/net/cxgb3/l2t.h
View File

@ -76,6 +76,7 @@ struct l2t_data {
atomic_t nfree; /* number of free entries */
rwlock_t lock;
struct l2t_entry l2tab[0];
struct rcu_head rcu_head; /* to handle rcu cleanup */
};
typedef void (*arp_failure_handler_func)(struct t3cdev * dev,
@ -99,7 +100,7 @@ static inline void set_arp_failure_handler(struct sk_buff *skb,
/*
* Getting to the L2 data from an offload device.
*/
#define L2DATA(dev) ((dev)->l2opt)
#define L2DATA(cdev) (rcu_dereference((cdev)->l2opt))
#define W_TCB_L2T_IX 0
#define S_TCB_L2T_IX 7
@ -126,15 +127,22 @@ static inline int l2t_send(struct t3cdev *dev, struct sk_buff *skb,
return t3_l2t_send_slow(dev, skb, e);
}
static inline void l2t_release(struct l2t_data *d, struct l2t_entry *e)
static inline void l2t_release(struct t3cdev *t, struct l2t_entry *e)
{
if (atomic_dec_and_test(&e->refcnt))
struct l2t_data *d;
rcu_read_lock();
d = L2DATA(t);
if (atomic_dec_and_test(&e->refcnt) && d)
t3_l2e_free(d, e);
rcu_read_unlock();
}
static inline void l2t_hold(struct l2t_data *d, struct l2t_entry *e)
{
if (atomic_add_return(1, &e->refcnt) == 1) /* 0 -> 1 transition */
if (d && atomic_add_return(1, &e->refcnt) == 1) /* 0 -> 1 transition */
atomic_dec(&d->nfree);
}

2
drivers/scsi/3w-9xxx.c
View File

@ -1800,10 +1800,12 @@ static int twa_scsi_queue_lck(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_
switch (retval) {
case SCSI_MLQUEUE_HOST_BUSY:
twa_free_request_id(tw_dev, request_id);
twa_unmap_scsi_data(tw_dev, request_id);
break;
case 1:
tw_dev->state[request_id] = TW_S_COMPLETED;
twa_free_request_id(tw_dev, request_id);
twa_unmap_scsi_data(tw_dev, request_id);
SCpnt->result = (DID_ERROR << 16);
done(SCpnt);
retval = 0;

2
drivers/scsi/Makefile
View File

@ -88,7 +88,7 @@ obj-$(CONFIG_SCSI_QLOGIC_FAS) += qlogicfas408.o qlogicfas.o
obj-$(CONFIG_PCMCIA_QLOGIC) += qlogicfas408.o
obj-$(CONFIG_SCSI_QLOGIC_1280) += qla1280.o
obj-$(CONFIG_SCSI_QLA_FC) += qla2xxx/
obj-$(CONFIG_SCSI_QLA_ISCSI) += qla4xxx/
obj-$(CONFIG_SCSI_QLA_ISCSI) += libiscsi.o qla4xxx/
obj-$(CONFIG_SCSI_LPFC) += lpfc/
obj-$(CONFIG_SCSI_BFA_FC) += bfa/
obj-$(CONFIG_SCSI_PAS16) += pas16.o

2
drivers/scsi/aacraid/commsup.c
View File

@ -1283,6 +1283,8 @@ static int _aac_reset_adapter(struct aac_dev *aac, int forced)
kfree(aac->queues);
aac->queues = NULL;
free_irq(aac->pdev->irq, aac);
if (aac->msi)
pci_disable_msi(aac->pdev);
kfree(aac->fsa_dev);
aac->fsa_dev = NULL;
quirks = aac_get_driver_ident(index)->quirks;

2
drivers/scsi/cxgbi/cxgb3i/cxgb3i.c
View File

@ -913,7 +913,7 @@ static void l2t_put(struct cxgbi_sock *csk)
struct t3cdev *t3dev = (struct t3cdev *)csk->cdev->lldev;
if (csk->l2t) {
l2t_release(L2DATA(t3dev), csk->l2t);
l2t_release(t3dev, csk->l2t);
csk->l2t = NULL;
cxgbi_sock_put(csk);
}

2
drivers/scsi/libsas/sas_expander.c
View File

@ -1721,7 +1721,7 @@ static int sas_find_bcast_dev(struct domain_device *dev,
list_for_each_entry(ch, &ex->children, siblings) {
if (ch->dev_type == EDGE_DEV || ch->dev_type == FANOUT_DEV) {
res = sas_find_bcast_dev(ch, src_dev);
if (src_dev)
if (*src_dev)
return res;
}
}