From 5a4f2b675210718aceb4abf41617a3af31bba718 Mon Sep 17 00:00:00 2001 From: Dave Olson Date: Fri, 23 May 2008 10:52:59 -0700 Subject: [PATCH] IB/mad: Fix kernel crash when .process_mad() returns SUCCESS|CONSUMED If a low-level driver returns IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED, handle_outgoing_dr_smp() doesn't clean up properly. The fix is to kfree the local data and break, rather than falling through. This was observed with the ipath driver, but could happen with any driver. This fixes . Signed-off-by: Dave Olson Signed-off-by: Roland Dreier --- drivers/infiniband/core/mad.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/infiniband/core/mad.c b/drivers/infiniband/core/mad.c index fbe16d5250a..1adf2efd3cb 100644 --- a/drivers/infiniband/core/mad.c +++ b/drivers/infiniband/core/mad.c @@ -747,7 +747,9 @@ static int handle_outgoing_dr_smp(struct ib_mad_agent_private *mad_agent_priv, break; case IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED: kmem_cache_free(ib_mad_cache, mad_priv); - break; + kfree(local); + ret = 1; + goto out; case IB_MAD_RESULT_SUCCESS: /* Treat like an incoming receive MAD */ port_priv = ib_get_mad_port(mad_agent_priv->agent.device, -- 2.41.1