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cxgb4/cxgb4vf: Fix mac_hlist initialization and free
Null pointer dereference seen when cxgb4vf driver is unloaded
without bringing up any interfaces, moving mac_hlist initialization
to driver probe and free the mac_hlist in remove to fix the issue.
Fixes: 24357e06ba
("cxgb4vf: fix memleak in mac_hlist initialization")
Signed-off-by: Arjun Vynipadath <arjun@chelsio.com>
Signed-off-by: Casey Leedom <leedom@chelsio.com>
Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
parent
ade9628ed0
commit
b539ea60f5
2 changed files with 13 additions and 12 deletions
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@ -2280,8 +2280,6 @@ static int cxgb_up(struct adapter *adap)
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#if IS_ENABLED(CONFIG_IPV6)
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update_clip(adap);
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#endif
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/* Initialize hash mac addr list*/
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INIT_LIST_HEAD(&adap->mac_hlist);
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return err;
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irq_err:
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@ -2295,8 +2293,6 @@ static int cxgb_up(struct adapter *adap)
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static void cxgb_down(struct adapter *adapter)
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{
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struct hash_mac_addr *entry, *tmp;
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cancel_work_sync(&adapter->tid_release_task);
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cancel_work_sync(&adapter->db_full_task);
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cancel_work_sync(&adapter->db_drop_task);
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@ -2306,11 +2302,6 @@ static void cxgb_down(struct adapter *adapter)
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t4_sge_stop(adapter);
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t4_free_sge_resources(adapter);
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list_for_each_entry_safe(entry, tmp, &adapter->mac_hlist, list) {
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list_del(&entry->list);
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kfree(entry);
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}
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adapter->flags &= ~FULL_INIT_DONE;
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}
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@ -5629,6 +5620,9 @@ static int init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
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(is_t5(adapter->params.chip) ? STATMODE_V(0) :
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T6_STATMODE_V(0)));
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/* Initialize hash mac addr list */
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INIT_LIST_HEAD(&adapter->mac_hlist);
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for_each_port(adapter, i) {
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netdev = alloc_etherdev_mq(sizeof(struct port_info),
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MAX_ETH_QSETS);
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@ -5907,6 +5901,7 @@ fw_attach_fail:
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static void remove_one(struct pci_dev *pdev)
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{
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struct adapter *adapter = pci_get_drvdata(pdev);
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struct hash_mac_addr *entry, *tmp;
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if (!adapter) {
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pci_release_regions(pdev);
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@ -5956,6 +5951,12 @@ static void remove_one(struct pci_dev *pdev)
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if (adapter->num_uld || adapter->num_ofld_uld)
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t4_uld_mem_free(adapter);
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free_some_resources(adapter);
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list_for_each_entry_safe(entry, tmp, &adapter->mac_hlist,
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list) {
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list_del(&entry->list);
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kfree(entry);
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}
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#if IS_ENABLED(CONFIG_IPV6)
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t4_cleanup_clip_tbl(adapter);
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#endif
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@ -723,9 +723,6 @@ static int adapter_up(struct adapter *adapter)
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if (adapter->flags & USING_MSIX)
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name_msix_vecs(adapter);
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/* Initialize hash mac addr list*/
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INIT_LIST_HEAD(&adapter->mac_hlist);
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adapter->flags |= FULL_INIT_DONE;
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}
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@ -3038,6 +3035,9 @@ static int cxgb4vf_pci_probe(struct pci_dev *pdev,
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if (err)
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goto err_unmap_bar;
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/* Initialize hash mac addr list */
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INIT_LIST_HEAD(&adapter->mac_hlist);
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/*
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* Allocate our "adapter ports" and stitch everything together.
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*/
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