IB/mad: Remove improper use of BUG_ON

We recently added BUG_ON's which were inappropriate for a condition which
should never happen. Change these to be WARN_ON_ONCE as a debugging aid.

Fixes: 4cd7c9479aff ('IB/mad: Add support for additional MAD info to/from drivers')
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

diff --git a/drivers/infiniband/hw/ehca/ehca_sqp.c b/drivers/infiniband/hw/ehca/ehca_sqp.c
index 12b5bc23832b13804c1f07b61ee4d83b8650dcd1..376b031c2c7fa0e00bee607ac3462c74e8d3594c 100644 (file)
--- a/drivers/infiniband/hw/ehca/ehca_sqp.c
+++ b/drivers/infiniband/hw/ehca/ehca_sqp.c
@@ -226,8 +226,9 @@ int ehca_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num,
        const struct ib_mad *in_mad = (const struct ib_mad *)in;
        struct ib_mad *out_mad = (struct ib_mad *)out;
 
-       BUG_ON(in_mad_size != sizeof(*in_mad) ||
-              *out_mad_size != sizeof(*out_mad));
+       if (WARN_ON_ONCE(in_mad_size != sizeof(*in_mad) ||
+                        *out_mad_size != sizeof(*out_mad)))
+               return IB_MAD_RESULT_FAILURE;
 
        if (!port_num || port_num > ibdev->phys_port_cnt || !in_wc)
                return IB_MAD_RESULT_FAILURE;

diff --git a/drivers/infiniband/hw/ipath/ipath_mad.c b/drivers/infiniband/hw/ipath/ipath_mad.c
index 948188e37f95ab3fc2dfb2dd4ab7a1698c0ae84f..ad3a926ab3c5d41b393ca04bee9a851ec196460c 100644 (file)
--- a/drivers/infiniband/hw/ipath/ipath_mad.c
+++ b/drivers/infiniband/hw/ipath/ipath_mad.c
@@ -1499,8 +1499,9 @@ int ipath_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num,
        const struct ib_mad *in_mad = (const struct ib_mad *)in;
        struct ib_mad *out_mad = (struct ib_mad *)out;
 
-       BUG_ON(in_mad_size != sizeof(*in_mad) ||
-              *out_mad_size != sizeof(*out_mad));
+       if (WARN_ON_ONCE(in_mad_size != sizeof(*in_mad) ||
+                        *out_mad_size != sizeof(*out_mad)))
+               return IB_MAD_RESULT_FAILURE;
 
        switch (in_mad->mad_hdr.mgmt_class) {
        case IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE:

diff --git a/drivers/infiniband/hw/mlx4/mad.c b/drivers/infiniband/hw/mlx4/mad.c
index 85a50df2f20360e1b8da63959b49901843012198..9a810e302f6b57bca2a66c99d173fc626414e305 100644 (file)
--- a/drivers/infiniband/hw/mlx4/mad.c
+++ b/drivers/infiniband/hw/mlx4/mad.c
@@ -861,8 +861,9 @@ int mlx4_ib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num,
        const struct ib_mad *in_mad = (const struct ib_mad *)in;
        struct ib_mad *out_mad = (struct ib_mad *)out;
 
-       BUG_ON(in_mad_size != sizeof(*in_mad) ||
-              *out_mad_size != sizeof(*out_mad));
+       if (WARN_ON_ONCE(in_mad_size != sizeof(*in_mad) ||
+                        *out_mad_size != sizeof(*out_mad)))
+               return IB_MAD_RESULT_FAILURE;
 
        switch (rdma_port_get_link_layer(ibdev, port_num)) {
        case IB_LINK_LAYER_INFINIBAND:

diff --git a/drivers/infiniband/hw/mlx5/mad.c b/drivers/infiniband/hw/mlx5/mad.c
index 01fc97db45d6e8e3b92f38b1f667627ea4f2a60c..b84d13a487cc04dcfbb501cfbd460c335bf91f8d 100644 (file)
--- a/drivers/infiniband/hw/mlx5/mad.c
+++ b/drivers/infiniband/hw/mlx5/mad.c
@@ -68,8 +68,9 @@ int mlx5_ib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num,
        const struct ib_mad *in_mad = (const struct ib_mad *)in;
        struct ib_mad *out_mad = (struct ib_mad *)out;
 
-       BUG_ON(in_mad_size != sizeof(*in_mad) ||
-              *out_mad_size != sizeof(*out_mad));
+       if (WARN_ON_ONCE(in_mad_size != sizeof(*in_mad) ||
+                        *out_mad_size != sizeof(*out_mad)))
+               return IB_MAD_RESULT_FAILURE;
 
        slid = in_wc ? in_wc->slid : be16_to_cpu(IB_LID_PERMISSIVE);
 

diff --git a/drivers/infiniband/hw/mthca/mthca_mad.c b/drivers/infiniband/hw/mthca/mthca_mad.c
index 6b2418b74c99ab84345403afe9d310f04aa465e5..7c3f2fb44ba51d8f288221df7b4d316a56adab28 100644 (file)
--- a/drivers/infiniband/hw/mthca/mthca_mad.c
+++ b/drivers/infiniband/hw/mthca/mthca_mad.c
@@ -209,8 +209,9 @@ int mthca_process_mad(struct ib_device *ibdev,
        const struct ib_mad *in_mad = (const struct ib_mad *)in;
        struct ib_mad *out_mad = (struct ib_mad *)out;
 
-       BUG_ON(in_mad_size != sizeof(*in_mad) ||
-              *out_mad_size != sizeof(*out_mad));
+       if (WARN_ON_ONCE(in_mad_size != sizeof(*in_mad) ||
+                        *out_mad_size != sizeof(*out_mad)))
+               return IB_MAD_RESULT_FAILURE;
 
        /* Forward locally generated traps to the SM */
        if (in_mad->mad_hdr.method == IB_MGMT_METHOD_TRAP &&

diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_ah.c b/drivers/infiniband/hw/ocrdma/ocrdma_ah.c
index 4bafa15708d0fc4212587cb4dfd6fce7d3f3211b..29b27675dd709e8271708c6ca91cc9deb0a1076e 100644 (file)
--- a/drivers/infiniband/hw/ocrdma/ocrdma_ah.c
+++ b/drivers/infiniband/hw/ocrdma/ocrdma_ah.c
@@ -215,8 +215,9 @@ int ocrdma_process_mad(struct ib_device *ibdev,
        const struct ib_mad *in_mad = (const struct ib_mad *)in;
        struct ib_mad *out_mad = (struct ib_mad *)out;
 
-       BUG_ON(in_mad_size != sizeof(*in_mad) ||
-              *out_mad_size != sizeof(*out_mad));
+       if (WARN_ON_ONCE(in_mad_size != sizeof(*in_mad) ||
+                        *out_mad_size != sizeof(*out_mad)))
+               return IB_MAD_RESULT_FAILURE;
 
        switch (in_mad->mad_hdr.mgmt_class) {
        case IB_MGMT_CLASS_PERF_MGMT:

diff --git a/drivers/infiniband/hw/qib/qib_mad.c b/drivers/infiniband/hw/qib/qib_mad.c
index 05e3242d84425acd6229204e642084a4ce0f654d..9625e7c438e57749c12495799fb896ac293880fd 100644 (file)
--- a/drivers/infiniband/hw/qib/qib_mad.c
+++ b/drivers/infiniband/hw/qib/qib_mad.c
@@ -2412,8 +2412,9 @@ int qib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port,
        const struct ib_mad *in_mad = (const struct ib_mad *)in;
        struct ib_mad *out_mad = (struct ib_mad *)out;
 
-       BUG_ON(in_mad_size != sizeof(*in_mad) ||
-              *out_mad_size != sizeof(*out_mad));
+       if (WARN_ON_ONCE(in_mad_size != sizeof(*in_mad) ||
+                        *out_mad_size != sizeof(*out_mad)))
+               return IB_MAD_RESULT_FAILURE;
 
        switch (in_mad->mad_hdr.mgmt_class) {
        case IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE: