[ovs-git] [openvswitch/ovs] ab645c: datapath: allocate nr_node_ids flow_stats instead ...
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noreply at github.com
Wed Jul 22 21:06:56 UTC 2015
Branch: refs/heads/branch-2.4
Home: https://github.com/openvswitch/ovs
Commit: ab645c8e0b06654b34d0e6b14a34ea0071a4e121
https://github.com/openvswitch/ovs/commit/ab645c8e0b06654b34d0e6b14a34ea0071a4e121
Author: Chris J Arges <chris.j.arges at canonical.com>
Date: 2015-07-22 (Wed, 22 Jul 2015)
Changed paths:
M datapath/flow_table.c
Log Message:
-----------
datapath: allocate nr_node_ids flow_stats instead of num_possible_nodes
Some architectures like POWER can have a NUMA node_possible_map that
contains sparse entries. This causes memory corruption with openvswitch
since it allocates flow_cache with a multiple of num_possible_nodes()
and
assumes the node variable returned by for_each_node will index into
flow->stats[node].
Use nr_node_ids to allocate a maximal sparse array instead of
num_possible_nodes().
The crash was noticed after 3af229f2 was applied as it changed the
node_possible_map to match node_online_map on boot.
Fixes: 3af229f2071f5b5cb31664be6109561fbe19c861
Signed-off-by: Chris J Arges <chris.j.arges at canonical.com>
Signed-off-by: Pravin B Shelar <pshelar at nicira.com>
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