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net: ngbe: fix memory leak in ngbe_probe() error path

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[ Upstream commit 88fa80021b77732bc98f73fb69d69c7cc37b9f0d ]

When ngbe_sw_init() is called, memory is allocated for wx->rss_key
in wx_init_rss_key(). However, in ngbe_probe() function, the subsequent
error paths after ngbe_sw_init() don't free the rss_key. Fix that by
freeing it in error path along with wx->mac_table.

Also change the label to which execution jumps when ngbe_sw_init()
fails, because otherwise, it could lead to a double free for rss_key,
when the mac_table allocation fails in wx_sw_init().

Fixes: 02338c484a ("net: ngbe: Initialize sw info and register netdev")
Signed-off-by: Abdun Nihaal <abdun.nihaal@gmail.com>
Reviewed-by: Kory Maincent <kory.maincent@bootlin.com>
Reviewed-by: Jiawen Wu <jiawenwu@trustnetic.com>
Link: https://patch.msgid.link/20250412154927.25908-1-abdun.nihaal@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Abdun Nihaal
2025-04-12 21:19:24 +05:30
committed by Greg Kroah-Hartman
parent 824a7c2df5
commit 7c2b66a31c
1 changed files with 2 additions and 1 deletions
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3
drivers/net/ethernet/wangxun/ngbe/ngbe_main.c
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@@ -589,7 +589,7 @@ static int ngbe_probe(struct pci_dev *pdev,
/* setup the private structure */
err = ngbe_sw_init(wx);
if (err)
goto err_free_mac_table;
goto err_pci_release_regions;
/* check if flash load is done after hw power up */
err = wx_check_flash_load(wx, NGBE_SPI_ILDR_STATUS_PERST);
@@ -687,6 +687,7 @@ err_register:
err_clear_interrupt_scheme:
wx_clear_interrupt_scheme(wx);
err_free_mac_table:
kfree(wx->rss_key);
kfree(wx->mac_table);
err_pci_release_regions:
pci_release_selected_regions(pdev,