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dpif-netdev: Fix cmap node use after free on flow disassociation.

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Data pointed by cmap node must not be freed while iterating.
ovsrcu_postpone should be used instead.

CC: Finn Christensen <fc@napatech.com>
Fixes: e8a2b5bf92 ("netdev-dpdk: implement flow offload with rte flow")
Signed-off-by: Ilya Maximets <i.maximets@samsung.com>
Signed-off-by: Ian Stokes <ian.stokes@intel.com>
This commit is contained in:
Ilya Maximets
2018-10-19 16:51:13 +03:00
committed by Ian Stokes
parent 95ca79d542
commit 5752eae485
2 changed files with 2 additions and 2 deletions
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lib/dpif-netdev.c
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@@ -2136,7 +2136,7 @@ megaflow_to_mark_disassociate(const ovs_u128 *mega_ufid)
if (ovs_u128_equals(*mega_ufid, data->mega_ufid)) {
cmap_remove(&flow_mark.megaflow_to_mark,
CONST_CAST(struct cmap_node *, &data->node), hash);
free(data);
ovsrcu_postpone(free, data);
return;
}
}