[git pull] InfiniBand fixes for 2.6.14
From: Roland Dreier
Date: Tue Sep 27 2005 - 23:03:17 EST
Linus, please pull from
master.kernel.org:/pub/scm/linux/kernel/git/roland/infiniband.git for-linus
This tree is also available from kernel.org mirrors at:
rsync://rsync.kernel.org/pub/scm/linux/kernel/git/roland/infiniband.git for-linus
This will pull the following changes (full patch below):
Jack Morgenstein:
[IB] mthca: fix hw_ver value returned from mthca_query_device
Michael S. Tsirkin:
[IB] mthca: fix off by one in clr_int calculation
[IB] mthca: Fix off by one bug in mthca_map_cmd
[IB] mthca: Round up number of slots in HCA context memory table
Roland Dreier:
[IB] mthca: Fix doorbell record resource leak
[IB] uverbs: Close some exploitable races
drivers/infiniband/core/uverbs.h | 1
drivers/infiniband/core/uverbs_cmd.c | 122 ++++++++++++++------------
drivers/infiniband/core/uverbs_main.c | 27 ++++--
drivers/infiniband/hw/mthca/mthca_cmd.c | 4 -
drivers/infiniband/hw/mthca/mthca_eq.c | 2
drivers/infiniband/hw/mthca/mthca_memfree.c | 19 +++-
drivers/infiniband/hw/mthca/mthca_provider.c | 2
include/rdma/ib_verbs.h | 1
8 files changed, 105 insertions(+), 73 deletions(-)
diff --git a/drivers/infiniband/core/uverbs.h b/drivers/infiniband/core/uverbs.h
--- a/drivers/infiniband/core/uverbs.h
+++ b/drivers/infiniband/core/uverbs.h
@@ -69,6 +69,7 @@ struct ib_uverbs_event_file {
struct ib_uverbs_file {
struct kref ref;
+ struct semaphore mutex;
struct ib_uverbs_device *device;
struct ib_ucontext *ucontext;
struct ib_event_handler event_handler;
diff --git a/drivers/infiniband/core/uverbs_cmd.c b/drivers/infiniband/core/uverbs_cmd.c
--- a/drivers/infiniband/core/uverbs_cmd.c
+++ b/drivers/infiniband/core/uverbs_cmd.c
@@ -76,8 +76,9 @@ ssize_t ib_uverbs_get_context(struct ib_
struct ib_uverbs_get_context_resp resp;
struct ib_udata udata;
struct ib_device *ibdev = file->device->ib_dev;
+ struct ib_ucontext *ucontext;
int i;
- int ret = in_len;
+ int ret;
if (out_len < sizeof resp)
return -ENOSPC;
@@ -85,45 +86,56 @@ ssize_t ib_uverbs_get_context(struct ib_
if (copy_from_user(&cmd, buf, sizeof cmd))
return -EFAULT;
+ down(&file->mutex);
+
+ if (file->ucontext) {
+ ret = -EINVAL;
+ goto err;
+ }
+
INIT_UDATA(&udata, buf + sizeof cmd,
(unsigned long) cmd.response + sizeof resp,
in_len - sizeof cmd, out_len - sizeof resp);
- file->ucontext = ibdev->alloc_ucontext(ibdev, &udata);
- if (IS_ERR(file->ucontext)) {
- ret = PTR_ERR(file->ucontext);
- file->ucontext = NULL;
- return ret;
- }
-
- file->ucontext->device = ibdev;
- INIT_LIST_HEAD(&file->ucontext->pd_list);
- INIT_LIST_HEAD(&file->ucontext->mr_list);
- INIT_LIST_HEAD(&file->ucontext->mw_list);
- INIT_LIST_HEAD(&file->ucontext->cq_list);
- INIT_LIST_HEAD(&file->ucontext->qp_list);
- INIT_LIST_HEAD(&file->ucontext->srq_list);
- INIT_LIST_HEAD(&file->ucontext->ah_list);
- spin_lock_init(&file->ucontext->lock);
+ ucontext = ibdev->alloc_ucontext(ibdev, &udata);
+ if (IS_ERR(ucontext))
+ return PTR_ERR(file->ucontext);
+
+ ucontext->device = ibdev;
+ INIT_LIST_HEAD(&ucontext->pd_list);
+ INIT_LIST_HEAD(&ucontext->mr_list);
+ INIT_LIST_HEAD(&ucontext->mw_list);
+ INIT_LIST_HEAD(&ucontext->cq_list);
+ INIT_LIST_HEAD(&ucontext->qp_list);
+ INIT_LIST_HEAD(&ucontext->srq_list);
+ INIT_LIST_HEAD(&ucontext->ah_list);
resp.async_fd = file->async_file.fd;
for (i = 0; i < file->device->num_comp; ++i)
if (copy_to_user((void __user *) (unsigned long) cmd.cq_fd_tab +
i * sizeof (__u32),
- &file->comp_file[i].fd, sizeof (__u32)))
- goto err;
+ &file->comp_file[i].fd, sizeof (__u32))) {
+ ret = -EFAULT;
+ goto err_free;
+ }
if (copy_to_user((void __user *) (unsigned long) cmd.response,
- &resp, sizeof resp))
- goto err;
+ &resp, sizeof resp)) {
+ ret = -EFAULT;
+ goto err_free;
+ }
+
+ file->ucontext = ucontext;
+ up(&file->mutex);
return in_len;
-err:
- ibdev->dealloc_ucontext(file->ucontext);
- file->ucontext = NULL;
+err_free:
+ ibdev->dealloc_ucontext(ucontext);
- return -EFAULT;
+err:
+ up(&file->mutex);
+ return ret;
}
ssize_t ib_uverbs_query_device(struct ib_uverbs_file *file,
@@ -352,9 +364,9 @@ retry:
if (ret)
goto err_pd;
- spin_lock_irq(&file->ucontext->lock);
+ down(&file->mutex);
list_add_tail(&uobj->list, &file->ucontext->pd_list);
- spin_unlock_irq(&file->ucontext->lock);
+ up(&file->mutex);
memset(&resp, 0, sizeof resp);
resp.pd_handle = uobj->id;
@@ -368,9 +380,9 @@ retry:
return in_len;
err_list:
- spin_lock_irq(&file->ucontext->lock);
+ down(&file->mutex);
list_del(&uobj->list);
- spin_unlock_irq(&file->ucontext->lock);
+ up(&file->mutex);
down(&ib_uverbs_idr_mutex);
idr_remove(&ib_uverbs_pd_idr, uobj->id);
@@ -410,9 +422,9 @@ ssize_t ib_uverbs_dealloc_pd(struct ib_u
idr_remove(&ib_uverbs_pd_idr, cmd.pd_handle);
- spin_lock_irq(&file->ucontext->lock);
+ down(&file->mutex);
list_del(&uobj->list);
- spin_unlock_irq(&file->ucontext->lock);
+ up(&file->mutex);
kfree(uobj);
@@ -512,9 +524,9 @@ retry:
resp.mr_handle = obj->uobject.id;
- spin_lock_irq(&file->ucontext->lock);
+ down(&file->mutex);
list_add_tail(&obj->uobject.list, &file->ucontext->mr_list);
- spin_unlock_irq(&file->ucontext->lock);
+ up(&file->mutex);
if (copy_to_user((void __user *) (unsigned long) cmd.response,
&resp, sizeof resp)) {
@@ -527,9 +539,9 @@ retry:
return in_len;
err_list:
- spin_lock_irq(&file->ucontext->lock);
+ down(&file->mutex);
list_del(&obj->uobject.list);
- spin_unlock_irq(&file->ucontext->lock);
+ up(&file->mutex);
err_unreg:
ib_dereg_mr(mr);
@@ -570,9 +582,9 @@ ssize_t ib_uverbs_dereg_mr(struct ib_uve
idr_remove(&ib_uverbs_mr_idr, cmd.mr_handle);
- spin_lock_irq(&file->ucontext->lock);
+ down(&file->mutex);
list_del(&memobj->uobject.list);
- spin_unlock_irq(&file->ucontext->lock);
+ up(&file->mutex);
ib_umem_release(file->device->ib_dev, &memobj->umem);
kfree(memobj);
@@ -647,9 +659,9 @@ retry:
if (ret)
goto err_cq;
- spin_lock_irq(&file->ucontext->lock);
+ down(&file->mutex);
list_add_tail(&uobj->uobject.list, &file->ucontext->cq_list);
- spin_unlock_irq(&file->ucontext->lock);
+ up(&file->mutex);
memset(&resp, 0, sizeof resp);
resp.cq_handle = uobj->uobject.id;
@@ -664,9 +676,9 @@ retry:
return in_len;
err_list:
- spin_lock_irq(&file->ucontext->lock);
+ down(&file->mutex);
list_del(&uobj->uobject.list);
- spin_unlock_irq(&file->ucontext->lock);
+ up(&file->mutex);
down(&ib_uverbs_idr_mutex);
idr_remove(&ib_uverbs_cq_idr, uobj->uobject.id);
@@ -712,9 +724,9 @@ ssize_t ib_uverbs_destroy_cq(struct ib_u
idr_remove(&ib_uverbs_cq_idr, cmd.cq_handle);
- spin_lock_irq(&file->ucontext->lock);
+ down(&file->mutex);
list_del(&uobj->uobject.list);
- spin_unlock_irq(&file->ucontext->lock);
+ up(&file->mutex);
spin_lock_irq(&file->comp_file[0].lock);
list_for_each_entry_safe(evt, tmp, &uobj->comp_list, obj_list) {
@@ -847,9 +859,9 @@ retry:
resp.qp_handle = uobj->uobject.id;
- spin_lock_irq(&file->ucontext->lock);
+ down(&file->mutex);
list_add_tail(&uobj->uobject.list, &file->ucontext->qp_list);
- spin_unlock_irq(&file->ucontext->lock);
+ up(&file->mutex);
if (copy_to_user((void __user *) (unsigned long) cmd.response,
&resp, sizeof resp)) {
@@ -862,9 +874,9 @@ retry:
return in_len;
err_list:
- spin_lock_irq(&file->ucontext->lock);
+ down(&file->mutex);
list_del(&uobj->uobject.list);
- spin_unlock_irq(&file->ucontext->lock);
+ up(&file->mutex);
err_destroy:
ib_destroy_qp(qp);
@@ -989,9 +1001,9 @@ ssize_t ib_uverbs_destroy_qp(struct ib_u
idr_remove(&ib_uverbs_qp_idr, cmd.qp_handle);
- spin_lock_irq(&file->ucontext->lock);
+ down(&file->mutex);
list_del(&uobj->uobject.list);
- spin_unlock_irq(&file->ucontext->lock);
+ up(&file->mutex);
spin_lock_irq(&file->async_file.lock);
list_for_each_entry_safe(evt, tmp, &uobj->event_list, obj_list) {
@@ -1136,9 +1148,9 @@ retry:
resp.srq_handle = uobj->uobject.id;
- spin_lock_irq(&file->ucontext->lock);
+ down(&file->mutex);
list_add_tail(&uobj->uobject.list, &file->ucontext->srq_list);
- spin_unlock_irq(&file->ucontext->lock);
+ up(&file->mutex);
if (copy_to_user((void __user *) (unsigned long) cmd.response,
&resp, sizeof resp)) {
@@ -1151,9 +1163,9 @@ retry:
return in_len;
err_list:
- spin_lock_irq(&file->ucontext->lock);
+ down(&file->mutex);
list_del(&uobj->uobject.list);
- spin_unlock_irq(&file->ucontext->lock);
+ up(&file->mutex);
err_destroy:
ib_destroy_srq(srq);
@@ -1227,9 +1239,9 @@ ssize_t ib_uverbs_destroy_srq(struct ib_
idr_remove(&ib_uverbs_srq_idr, cmd.srq_handle);
- spin_lock_irq(&file->ucontext->lock);
+ down(&file->mutex);
list_del(&uobj->uobject.list);
- spin_unlock_irq(&file->ucontext->lock);
+ up(&file->mutex);
spin_lock_irq(&file->async_file.lock);
list_for_each_entry_safe(evt, tmp, &uobj->event_list, obj_list) {
diff --git a/drivers/infiniband/core/uverbs_main.c b/drivers/infiniband/core/uverbs_main.c
--- a/drivers/infiniband/core/uverbs_main.c
+++ b/drivers/infiniband/core/uverbs_main.c
@@ -448,7 +448,9 @@ static ssize_t ib_uverbs_write(struct fi
if (hdr.in_words * 4 != count)
return -EINVAL;
- if (hdr.command < 0 || hdr.command >= ARRAY_SIZE(uverbs_cmd_table))
+ if (hdr.command < 0 ||
+ hdr.command >= ARRAY_SIZE(uverbs_cmd_table) ||
+ !uverbs_cmd_table[hdr.command])
return -EINVAL;
if (!file->ucontext &&
@@ -484,27 +486,29 @@ static int ib_uverbs_open(struct inode *
file = kmalloc(sizeof *file +
(dev->num_comp - 1) * sizeof (struct ib_uverbs_event_file),
GFP_KERNEL);
- if (!file)
- return -ENOMEM;
+ if (!file) {
+ ret = -ENOMEM;
+ goto err;
+ }
file->device = dev;
kref_init(&file->ref);
+ init_MUTEX(&file->mutex);
file->ucontext = NULL;
+ kref_get(&file->ref);
ret = ib_uverbs_event_init(&file->async_file, file);
if (ret)
- goto err;
+ goto err_kref;
file->async_file.is_async = 1;
- kref_get(&file->ref);
-
for (i = 0; i < dev->num_comp; ++i) {
+ kref_get(&file->ref);
ret = ib_uverbs_event_init(&file->comp_file[i], file);
if (ret)
goto err_async;
- kref_get(&file->ref);
file->comp_file[i].is_async = 0;
}
@@ -524,9 +528,16 @@ err_async:
ib_uverbs_event_release(&file->async_file);
-err:
+err_kref:
+ /*
+ * One extra kref_put() because we took a reference before the
+ * event file creation that failed and got us here.
+ */
+ kref_put(&file->ref, ib_uverbs_release_file);
kref_put(&file->ref, ib_uverbs_release_file);
+err:
+ module_put(dev->ib_dev->owner);
return ret;
}
diff --git a/drivers/infiniband/hw/mthca/mthca_cmd.c b/drivers/infiniband/hw/mthca/mthca_cmd.c
--- a/drivers/infiniband/hw/mthca/mthca_cmd.c
+++ b/drivers/infiniband/hw/mthca/mthca_cmd.c
@@ -605,7 +605,7 @@ static int mthca_map_cmd(struct mthca_de
err = -EINVAL;
goto out;
}
- for (i = 0; i < mthca_icm_size(&iter) / (1 << lg); ++i, ++nent) {
+ for (i = 0; i < mthca_icm_size(&iter) / (1 << lg); ++i) {
if (virt != -1) {
pages[nent * 2] = cpu_to_be64(virt);
virt += 1 << lg;
@@ -616,7 +616,7 @@ static int mthca_map_cmd(struct mthca_de
ts += 1 << (lg - 10);
++tc;
- if (nent == MTHCA_MAILBOX_SIZE / 16) {
+ if (++nent == MTHCA_MAILBOX_SIZE / 16) {
err = mthca_cmd(dev, mailbox->dma, nent, 0, op,
CMD_TIME_CLASS_B, status);
if (err || *status)
diff --git a/drivers/infiniband/hw/mthca/mthca_eq.c b/drivers/infiniband/hw/mthca/mthca_eq.c
--- a/drivers/infiniband/hw/mthca/mthca_eq.c
+++ b/drivers/infiniband/hw/mthca/mthca_eq.c
@@ -836,7 +836,7 @@ int __devinit mthca_init_eq_table(struct
dev->eq_table.clr_mask =
swab32(1 << (dev->eq_table.inta_pin & 31));
dev->eq_table.clr_int = dev->clr_base +
- (dev->eq_table.inta_pin < 31 ? 4 : 0);
+ (dev->eq_table.inta_pin < 32 ? 4 : 0);
}
dev->eq_table.arm_mask = 0;
diff --git a/drivers/infiniband/hw/mthca/mthca_memfree.c b/drivers/infiniband/hw/mthca/mthca_memfree.c
--- a/drivers/infiniband/hw/mthca/mthca_memfree.c
+++ b/drivers/infiniband/hw/mthca/mthca_memfree.c
@@ -290,7 +290,7 @@ struct mthca_icm_table *mthca_alloc_icm_
int i;
u8 status;
- num_icm = obj_size * nobj / MTHCA_TABLE_CHUNK_SIZE;
+ num_icm = (obj_size * nobj + MTHCA_TABLE_CHUNK_SIZE - 1) / MTHCA_TABLE_CHUNK_SIZE;
table = kmalloc(sizeof *table + num_icm * sizeof *table->icm, GFP_KERNEL);
if (!table)
@@ -529,12 +529,25 @@ int mthca_alloc_db(struct mthca_dev *dev
goto found;
}
+ for (i = start; i != end; i += dir)
+ if (!dev->db_tab->page[i].db_rec) {
+ page = dev->db_tab->page + i;
+ goto alloc;
+ }
+
if (dev->db_tab->max_group1 >= dev->db_tab->min_group2 - 1) {
ret = -ENOMEM;
goto out;
}
+ if (group == 0)
+ ++dev->db_tab->max_group1;
+ else
+ --dev->db_tab->min_group2;
+
page = dev->db_tab->page + end;
+
+alloc:
page->db_rec = dma_alloc_coherent(&dev->pdev->dev, 4096,
&page->mapping, GFP_KERNEL);
if (!page->db_rec) {
@@ -554,10 +567,6 @@ int mthca_alloc_db(struct mthca_dev *dev
}
bitmap_zero(page->used, MTHCA_DB_REC_PER_PAGE);
- if (group == 0)
- ++dev->db_tab->max_group1;
- else
- --dev->db_tab->min_group2;
found:
j = find_first_zero_bit(page->used, MTHCA_DB_REC_PER_PAGE);
diff --git a/drivers/infiniband/hw/mthca/mthca_provider.c b/drivers/infiniband/hw/mthca/mthca_provider.c
--- a/drivers/infiniband/hw/mthca/mthca_provider.c
+++ b/drivers/infiniband/hw/mthca/mthca_provider.c
@@ -84,7 +84,7 @@ static int mthca_query_device(struct ib_
props->vendor_id = be32_to_cpup((__be32 *) (out_mad->data + 36)) &
0xffffff;
props->vendor_part_id = be16_to_cpup((__be16 *) (out_mad->data + 30));
- props->hw_ver = be16_to_cpup((__be16 *) (out_mad->data + 32));
+ props->hw_ver = be32_to_cpup((__be32 *) (out_mad->data + 32));
memcpy(&props->sys_image_guid, out_mad->data + 4, 8);
memcpy(&props->node_guid, out_mad->data + 12, 8);
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -665,7 +665,6 @@ struct ib_ucontext {
struct list_head qp_list;
struct list_head srq_list;
struct list_head ah_list;
- spinlock_t lock;
};
struct ib_uobject {
-
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