netdev - [PATCH net 1/2] bnx2x: fix a crash on corrupt firmware file

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Message-Id: <1331856509-9159-1-git-send-email-mschmidt@redhat.com>
Date:	Fri, 16 Mar 2012 01:08:28 +0100
From:	Michal Schmidt <mschmidt@...hat.com>
To:	netdev@...r.kernel.org
Cc:	Yuval Mintz <yuvalmin@...adcom.com>,
	Yaniv Rosner <yanivr@...adcom.com>,
	Eilon Greenstein <eilong@...adcom.com>,
	Dmitry Kravkov <dmitry@...adcom.com>
Subject: [PATCH net 1/2] bnx2x: fix a crash on corrupt firmware file

If the requested firmware is deemed corrupt and then released, reset the
pointer to NULL in order to avoid double-freeing it in
bnx2x_release_firmware() or dereferencing it in bnx2x_init_firmware().

Signed-off-by: Michal Schmidt <mschmidt@...hat.com>
---
 drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
index 2545213..00ff62f 100644
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
@@ -10901,6 +10901,7 @@ init_ops_alloc_err:
 	kfree(bp->init_data);
 request_firmware_exit:
 	release_firmware(bp->firmware);
+	bp->firmware = NULL;
 
 	return rc;
 }
-- 
1.7.7.6

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