linux-kernel - [PATCH net] nfp: xsk: fix memory leak in nfp_net

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Message-ID: <20251024152528.275533-1-nihaal@cse.iitm.ac.in>
Date: Fri, 24 Oct 2025 20:55:22 +0530
From: Abdun Nihaal <nihaal@....iitm.ac.in>
To: kuba@...nel.org
Cc: Abdun Nihaal <nihaal@....iitm.ac.in>,
	horms@...nel.org,
	andrew+netdev@...n.ch,
	davem@...emloft.net,
	edumazet@...gle.com,
	pabeni@...hat.com,
	tglx@...utronix.de,
	louis.peens@...igine.com,
	mingo@...nel.org,
	mheib@...hat.com,
	easwar.hariharan@...ux.microsoft.com,
	sdf@...ichev.me,
	kees@...nel.org,
	niklas.soderlund@...igine.com,
	oss-drivers@...igine.com,
	netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH net] nfp: xsk: fix memory leak in nfp_net_alloc()

In nfp_net_alloc(), the memory allocated for xsk_pools is not freed in
the subsequent error paths, leading to a memory leak. Fix that by
freeing it in the error path.

Fixes: 6402528b7a0b ("nfp: xsk: add AF_XDP zero-copy Rx and Tx support")
Signed-off-by: Abdun Nihaal <nihaal@....iitm.ac.in>
---
 drivers/net/ethernet/netronome/nfp/nfp_net_common.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/ethernet/netronome/nfp/nfp_net_common.c b/drivers/net/ethernet/netronome/nfp/nfp_net_common.c
index 132626a3f9f7..f59466877be2 100644
--- a/drivers/net/ethernet/netronome/nfp/nfp_net_common.c
+++ b/drivers/net/ethernet/netronome/nfp/nfp_net_common.c
@@ -2566,6 +2566,7 @@ nfp_net_alloc(struct pci_dev *pdev, const struct nfp_dev_info *dev_info,
 	return nn;
 
 err_free_nn:
+	kfree(nn->dp.xsk_pools);
 	if (nn->dp.netdev)
 		free_netdev(nn->dp.netdev);
 	else
-- 
2.43.0