linux-kernel - [PATCH 5.17 029/146] ice: Fix memory leak in ice_get_orom_civd

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Date:   Tue, 26 Apr 2022 10:20:24 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Jianglei Nie <niejianglei2021@....com>,
        Tony Nguyen <anthony.l.nguyen@...el.com>,
        Sasha Levin <sashal@...nel.org>,
        Gurucharan <gurucharanx.g@...el.com>
Subject: [PATCH 5.17 029/146] ice: Fix memory leak in ice_get_orom_civd_data()

From: Jianglei Nie <niejianglei2021@....com>

[ Upstream commit 7c8881b77908a51814a050da408c89f1a25b7fb7 ]

A memory chunk was allocated for orom_data in ice_get_orom_civd_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.

Fixes: af18d8866c80 ("ice: reduce time to read Option ROM CIVD data")
Signed-off-by: Jianglei Nie <niejianglei2021@....com>
Tested-by: Gurucharan <gurucharanx.g@...el.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@...el.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 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;
 	}
-- 
2.35.1