6.6-stable review patch. If anyone has any objections, please let me know.
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From: Abdun Nihaal abdun.nihaal@gmail.com
[ Upstream commit 00ffb3724ce743578163f5ade2884374554ca021 ]
In the for loop used to allocate the loc_array and bmap for each port, a memory leak is possible when the allocation for loc_array succeeds, but the allocation for bmap fails. This is because when the control flow goes to the label free_eth_finfo, only the allocations starting from (i-1)th iteration are freed.
Fix that by freeing the loc_array in the bmap allocation error path.
Fixes: d915c299f1da ("cxgb4: add skeleton for ethtool n-tuple filters") Signed-off-by: Abdun Nihaal abdun.nihaal@gmail.com Reviewed-by: Simon Horman horms@kernel.org Reviewed-by: Jacob Keller jacob.e.keller@intel.com Link: https://patch.msgid.link/20250414170649.89156-1-abdun.nihaal@gmail.com Signed-off-by: Jakub Kicinski kuba@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/ethernet/chelsio/cxgb4/cxgb4_ethtool.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_ethtool.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_ethtool.c index 8477a93cee6bd..b77897aa06c4f 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_ethtool.c +++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_ethtool.c @@ -2273,6 +2273,7 @@ int cxgb4_init_ethtool_filters(struct adapter *adap) eth_filter->port[i].bmap = bitmap_zalloc(nentries, GFP_KERNEL); if (!eth_filter->port[i].bmap) { ret = -ENOMEM; + kvfree(eth_filter->port[i].loc_array); goto free_eth_finfo; } }