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| author | Bart Van Assche <bart.vanassche@sandisk.com> | 2016-11-21 21:21:17 +0300 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2016-12-14 21:27:34 +0300 |
| commit | 2fe2f378dd45847d2643638c07a7658822087836 (patch) | |
| tree | c95122edb0b6ea734cec6502f3d66e5092b208ec /drivers/infiniband/core/mad.c | |
| parent | 0d38c240f97602d9a4553252bb710521f49bb264 (diff) | |
| download | linux-2fe2f378dd45847d2643638c07a7658822087836.tar.xz | |
IB/mad: Fix an array index check
The array ib_mad_mgmt_class_table.method_table has MAX_MGMT_CLASS
(80) elements. Hence compare the array index with that value instead
of with IB_MGMT_MAX_METHODS (128). This patch avoids that Coverity
reports the following:
Overrunning array class->method_table of 80 8-byte elements at element index 127 (byte offset 1016) using index convert_mgmt_class(mad_hdr->mgmt_class) (which evaluates to 127).
Fixes: commit b7ab0b19a85f ("IB/mad: Verify mgmt class in received MADs")
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Cc: Sean Hefty <sean.hefty@intel.com>
Cc: <stable@vger.kernel.org>
Reviewed-by: Hal Rosenstock <hal@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband/core/mad.c')
| -rw-r--r-- | drivers/infiniband/core/mad.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/infiniband/core/mad.c b/drivers/infiniband/core/mad.c index bc2a9c2caa3c..d120f6ff1ea6 100644 --- a/drivers/infiniband/core/mad.c +++ b/drivers/infiniband/core/mad.c @@ -1746,7 +1746,7 @@ find_mad_agent(struct ib_mad_port_private *port_priv, if (!class) goto out; if (convert_mgmt_class(mad_hdr->mgmt_class) >= - IB_MGMT_MAX_METHODS) + ARRAY_SIZE(class->method_table)) goto out; method = class->method_table[convert_mgmt_class( mad_hdr->mgmt_class)]; |