[v3,4/4] net/ice: fix wild pointer
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Commit Message
To avoid wild pointer, pointers should be set to NULL after free them.
Fixes: 1a2fc1799f09 ("net/ice: reject duplicated flow for flow director")
Fixes: 84dc7a95a2d3 ("net/ice: enable flow director engine")
Fixes: 0f880c3df192 ("net/ice: add flow director counter resource init/release")
Signed-off-by: Wang ShougangX <shougangx.wang@intel.com>
---
drivers/net/ice/ice_fdir_filter.c | 22 +++++++++++++++++++---
1 file changed, 19 insertions(+), 3 deletions(-)
@@ -152,6 +152,10 @@ ice_fdir_prof_alloc(struct ice_hw *hw)
if (!hw->fdir_prof)
return -ENOMEM;
}
+
+ /* To avoid wild pointer, unused field pointer should be NULL */
+ hw->fdir_prof[ICE_FLTR_PTYPE_NONF_NONE] = NULL;
+
for (ptype = ICE_FLTR_PTYPE_NONF_IPV4_UDP;
ptype < ICE_FLTR_PTYPE_MAX;
ptype++) {
@@ -167,9 +171,13 @@ ice_fdir_prof_alloc(struct ice_hw *hw)
fail_mem:
for (fltr_ptype = ICE_FLTR_PTYPE_NONF_IPV4_UDP;
fltr_ptype < ptype;
- fltr_ptype++)
+ fltr_ptype++) {
rte_free(hw->fdir_prof[fltr_ptype]);
+ hw->fdir_prof[fltr_ptype] = NULL;
+ }
+
rte_free(hw->fdir_prof);
+ hw->fdir_prof = NULL;
return -ENOMEM;
}
@@ -249,8 +257,10 @@ ice_fdir_counter_release(struct ice_pf *pf)
&fdir_info->counter;
uint8_t i;
- for (i = 0; i < container->index_free; i++)
+ for (i = 0; i < container->index_free; i++) {
rte_free(container->pools[i]);
+ container->pools[i] = NULL;
+ }
TAILQ_INIT(&container->pool_list);
container->index_free = 0;
@@ -400,6 +410,9 @@ ice_fdir_release_filter_list(struct ice_pf *pf)
rte_free(fdir_info->hash_map);
if (fdir_info->hash_table)
rte_hash_free(fdir_info->hash_table);
+
+ fdir_info->hash_map = NULL;
+ fdir_info->hash_table = NULL;
}
/*
@@ -526,10 +539,13 @@ ice_fdir_prof_free(struct ice_hw *hw)
for (ptype = ICE_FLTR_PTYPE_NONF_IPV4_UDP;
ptype < ICE_FLTR_PTYPE_MAX;
- ptype++)
+ ptype++) {
rte_free(hw->fdir_prof[ptype]);
+ hw->fdir_prof[ptype] = NULL;
+ }
rte_free(hw->fdir_prof);
+ hw->fdir_prof = NULL;
}
/* Remove a profile for some filter type */