From: Abdun Nihaal Date: Mon, 14 Apr 2025 17:06:46 +0000 (+0530) Subject: cxgb4: fix memory leak in cxgb4_init_ethtool_filters() error path X-Git-Tag: v6.6.88~115 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=08aa59c0be768596467552c129e9f82166779a67;p=thirdparty%2Fkernel%2Fstable.git cxgb4: fix memory leak in cxgb4_init_ethtool_filters() error path [ 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 Reviewed-by: Simon Horman Reviewed-by: Jacob Keller Link: https://patch.msgid.link/20250414170649.89156-1-abdun.nihaal@gmail.com Signed-off-by: Jakub Kicinski Signed-off-by: Sasha Levin --- 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; } }