linux-kernel - [PATCH v2 1/2] net: mana: Fix memory leak in mana_gd_setup

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Message-Id: <20241209175751.287738-2-mlevitsk@redhat.com>
Date: Mon,  9 Dec 2024 12:57:50 -0500
From: Maxim Levitsky <mlevitsk@...hat.com>
To: kvm@...r.kernel.org
Cc: Jakub Kicinski <kuba@...nel.org>,
	Haiyang Zhang <haiyangz@...rosoft.com>,
	Souradeep Chakrabarti <schakrabarti@...ux.microsoft.com>,
	linux-hyperv@...r.kernel.org,
	Dexuan Cui <decui@...rosoft.com>,
	Paolo Abeni <pabeni@...hat.com>,
	linux-kernel@...r.kernel.org,
	Konstantin Taranov <kotaranov@...rosoft.com>,
	Leon Romanovsky <leon@...nel.org>,
	"K. Y. Srinivasan" <kys@...rosoft.com>,
	Wei Liu <wei.liu@...nel.org>,
	Andrew Lunn <andrew+netdev@...n.ch>,
	Shradha Gupta <shradhagupta@...ux.microsoft.com>,
	"David S. Miller" <davem@...emloft.net>,
	netdev@...r.kernel.org,
	Eric Dumazet <edumazet@...gle.com>,
	Long Li <longli@...rosoft.com>,
	Yury Norov <yury.norov@...il.com>,
	Maxim Levitsky <mlevitsk@...hat.com>
Subject: [PATCH v2 1/2] net: mana: Fix memory leak in mana_gd_setup_irqs

Commit 8afefc361209 ("net: mana: Assigning IRQ affinity on HT cores")
added memory allocation in mana_gd_setup_irqs of 'irqs' but the code
doesn't free this temporary array in the success path.

This was caught by kmemleak.

Fixes: 8afefc361209 ("net: mana: Assigning IRQ affinity on HT cores")
Signed-off-by: Maxim Levitsky <mlevitsk@...hat.com>
---
 drivers/net/ethernet/microsoft/mana/gdma_main.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/ethernet/microsoft/mana/gdma_main.c b/drivers/net/ethernet/microsoft/mana/gdma_main.c
index e97af7ac2bb2..aba188f9f10f 100644
--- a/drivers/net/ethernet/microsoft/mana/gdma_main.c
+++ b/drivers/net/ethernet/microsoft/mana/gdma_main.c
@@ -1375,6 +1375,7 @@ static int mana_gd_setup_irqs(struct pci_dev *pdev)
 	gc->max_num_msix = nvec;
 	gc->num_msix_usable = nvec;
 	cpus_read_unlock();
+	kfree(irqs);
 	return 0;
 
 free_irq:
-- 
2.26.3