linux-kernel - [PATCH] ice: Fix memory leak in ice_get_orom_civd

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Message-Id: <20220401080051.16846-1-niejianglei2021@163.com>
Date:   Fri,  1 Apr 2022 16:00:51 +0800
From:   Jianglei Nie <niejianglei2021@....com>
To:     jesse.brandeburg@...el.com, anthony.l.nguyen@...el.com,
        davem@...emloft.net, kuba@...nel.org
Cc:     intel-wired-lan@...ts.osuosl.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Jianglei Nie <niejianglei2021@....com>
Subject: [PATCH] ice: Fix memory leak in ice_get_orom_civd_data()

Line 637 allocates a memory chunk for orom_data by vzmalloc(). But
when ice_read_flash_module() fails, the allocated memory is not freed,
which will lead to a memory leak.

We can fix it by freeing the orom_data when ce_read_flash_module() fails.

Signed-off-by: Jianglei Nie <niejianglei2021@....com>
---
 drivers/net/ethernet/intel/ice/ice_nvm.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/ethernet/intel/ice/ice_nvm.c b/drivers/net/ethernet/intel/ice/ice_nvm.c
index 4eb0599714f4..13cdb5ea594d 100644
--- a/drivers/net/ethernet/intel/ice/ice_nvm.c
+++ b/drivers/net/ethernet/intel/ice/ice_nvm.c
@@ -641,6 +641,7 @@ ice_get_orom_civd_data(struct ice_hw *hw, enum ice_bank_select bank,
 	status = ice_read_flash_module(hw, bank, ICE_SR_1ST_OROM_BANK_PTR, 0,
 				       orom_data, hw->flash.banks.orom_size);
 	if (status) {
+		vfree(orom_data);
 		ice_debug(hw, ICE_DBG_NVM, "Unable to read Option ROM data\n");
 		return status;
 	}
-- 
2.25.1