From: Tatyana Nikolova <Tatyana.E.Nikolova@intel.com>
Date: Fri, 3 Aug 2012 23:59:41 +0000 (+0000)
Subject: RDMA/ucma.c: Fix for events with wrong context on iWARP
X-Git-Tag: v3.6-rc3~36^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=418edaaba96e58112b15c82b4907084e2a9caf42;p=pandora-kernel.git

RDMA/ucma.c: Fix for events with wrong context on iWARP

It is possible for asynchronous RDMA_CM_EVENT_ESTABLISHED events to be
generated with ctx->uid == 0, because ucma_set_event_context() copies
ctx->uid to the event structure outside of ctx->file->mut.  This leads
to a crash in the userspace library, since it gets a bogus event.

Fix this by taking the mutex a bit earlier in ucma_event_handler.

Signed-off-by: Tatyana Nikolova <Tatyana.E.Nikolova@intel.com>
Signed-off-by: Sean Hefty <Sean.Hefty@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
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