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31c02e2157
The comparisons of priv->tx_tail to ah->last_send in ipoib_free_ah() and ipoib_post_receive() are slightly unsafe, because priv->tx_lock is not held and hence a stale value of ah->last_send might be used, which would lead to freeing an AH before the driver was really done with it. The simple way to fix this is to the optimization of early free from ipoib_free_ah() and unconditionally queue AHs for reaping, and then take priv->tx_lock in __ipoib_reap_ah(). Signed-off-by: Roland Dreier <rolandd@cisco.com> |
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