From: Bart Van Assche <[email protected]>
commit 2fe2f378dd45847d2643638c07a7658822087836 upstream.
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 <[email protected]>
Cc: Sean Hefty <[email protected]>
Reviewed-by: Hal Rosenstock <[email protected]>
Signed-off-by: Doug Ledford <[email protected]>
Signed-off-by: Willy Tarreau <[email protected]>
---
drivers/infiniband/core/mad.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/infiniband/core/mad.c b/drivers/infiniband/core/mad.c
index dc3fd1e..200f6c1 100644
--- a/drivers/infiniband/core/mad.c
+++ b/drivers/infiniband/core/mad.c
@@ -1598,7 +1598,7 @@ find_mad_agent(struct ib_mad_port_private *port_priv,
if (!class)
goto out;
if (convert_mgmt_class(mad->mad_hdr.mgmt_class) >=
- IB_MGMT_MAX_METHODS)
+ ARRAY_SIZE(class->method_table))
goto out;
method = class->method_table[convert_mgmt_class(
mad->mad_hdr.mgmt_class)];
--
2.8.0.rc2.1.gbe9624a
