* [PATCH AUTOSEL 4.14 014/109] RDMA/i40iw: Fix incorrect iterator type
[not found] <20191110024541.31567-1-sashal@kernel.org>
@ 2019-11-10 2:44 ` Sasha Levin
2019-11-10 2:45 ` [PATCH AUTOSEL 4.14 108/109] IB/iser: Fix possible NULL deref at iser_inv_desc() Sasha Levin
1 sibling, 0 replies; 2+ messages in thread
From: Sasha Levin @ 2019-11-10 2:44 UTC (permalink / raw)
To: linux-kernel, stable
Cc: Håkon Bugge, Håkon Bugge, Jason Gunthorpe, Sasha Levin,
linux-rdma
From: Håkon Bugge <Haakon.Bugge@oracle.com>
[ Upstream commit 802fa45cd320de319e86c93bca72abec028ba059 ]
Commit f27b4746f378 ("i40iw: add connection management code") uses an
incorrect rcu iterator, whilst holding the rtnl_lock. Since the
critical region invokes i40iw_manage_qhash(), which is a sleeping
function, the rcu locking and traversal cannot be used.
Signed-off-by: Håkon Bugge <haakon.bugge@oracle.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/infiniband/hw/i40iw/i40iw_cm.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/infiniband/hw/i40iw/i40iw_cm.c b/drivers/infiniband/hw/i40iw/i40iw_cm.c
index b7f1ce5333cb8..880c63579ba88 100644
--- a/drivers/infiniband/hw/i40iw/i40iw_cm.c
+++ b/drivers/infiniband/hw/i40iw/i40iw_cm.c
@@ -1667,7 +1667,7 @@ static enum i40iw_status_code i40iw_add_mqh_6(struct i40iw_device *iwdev,
unsigned long flags;
rtnl_lock();
- for_each_netdev_rcu(&init_net, ip_dev) {
+ for_each_netdev(&init_net, ip_dev) {
if ((((rdma_vlan_dev_vlan_id(ip_dev) < I40IW_NO_VLAN) &&
(rdma_vlan_dev_real_dev(ip_dev) == iwdev->netdev)) ||
(ip_dev == iwdev->netdev)) && (ip_dev->flags & IFF_UP)) {
--
2.20.1
^ permalink raw reply related [flat|nested] 2+ messages in thread
* [PATCH AUTOSEL 4.14 108/109] IB/iser: Fix possible NULL deref at iser_inv_desc()
[not found] <20191110024541.31567-1-sashal@kernel.org>
2019-11-10 2:44 ` [PATCH AUTOSEL 4.14 014/109] RDMA/i40iw: Fix incorrect iterator type Sasha Levin
@ 2019-11-10 2:45 ` Sasha Levin
1 sibling, 0 replies; 2+ messages in thread
From: Sasha Levin @ 2019-11-10 2:45 UTC (permalink / raw)
To: linux-kernel, stable
Cc: Israel Rukshin, Max Gurtovoy, Sagi Grimberg, Jason Gunthorpe,
Sasha Levin, linux-rdma
From: Israel Rukshin <israelr@mellanox.com>
[ Upstream commit 65f07f5a09dacf3b60619f196f096ea3671a5eda ]
In case target remote invalidates bogus rkey and signature is not used,
pi_ctx is NULL deref.
The commit also fails the connection on bogus remote invalidation.
Fixes: 59caaed7a72a ("IB/iser: Support the remote invalidation exception")
Signed-off-by: Israel Rukshin <israelr@mellanox.com>
Reviewed-by: Max Gurtovoy <maxg@mellanox.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/infiniband/ulp/iser/iser_initiator.c | 18 +++++++++++++-----
1 file changed, 13 insertions(+), 5 deletions(-)
diff --git a/drivers/infiniband/ulp/iser/iser_initiator.c b/drivers/infiniband/ulp/iser/iser_initiator.c
index 2a07692007bdd..a126750b65a92 100644
--- a/drivers/infiniband/ulp/iser/iser_initiator.c
+++ b/drivers/infiniband/ulp/iser/iser_initiator.c
@@ -592,13 +592,19 @@ void iser_login_rsp(struct ib_cq *cq, struct ib_wc *wc)
ib_conn->post_recv_buf_count--;
}
-static inline void
+static inline int
iser_inv_desc(struct iser_fr_desc *desc, u32 rkey)
{
- if (likely(rkey == desc->rsc.mr->rkey))
+ if (likely(rkey == desc->rsc.mr->rkey)) {
desc->rsc.mr_valid = 0;
- else if (likely(rkey == desc->pi_ctx->sig_mr->rkey))
+ } else if (likely(desc->pi_ctx && rkey == desc->pi_ctx->sig_mr->rkey)) {
desc->pi_ctx->sig_mr_valid = 0;
+ } else {
+ iser_err("Bogus remote invalidation for rkey %#x\n", rkey);
+ return -EINVAL;
+ }
+
+ return 0;
}
static int
@@ -626,12 +632,14 @@ iser_check_remote_inv(struct iser_conn *iser_conn,
if (iser_task->dir[ISER_DIR_IN]) {
desc = iser_task->rdma_reg[ISER_DIR_IN].mem_h;
- iser_inv_desc(desc, rkey);
+ if (unlikely(iser_inv_desc(desc, rkey)))
+ return -EINVAL;
}
if (iser_task->dir[ISER_DIR_OUT]) {
desc = iser_task->rdma_reg[ISER_DIR_OUT].mem_h;
- iser_inv_desc(desc, rkey);
+ if (unlikely(iser_inv_desc(desc, rkey)))
+ return -EINVAL;
}
} else {
iser_err("failed to get task for itt=%d\n", hdr->itt);
--
2.20.1
^ permalink raw reply related [flat|nested] 2+ messages in thread