linux-kernel - [04/74] myri10ge: fix rmmod crash

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Message-Id: <20110413155143.403101253@clark.kroah.org>
Date:	Wed, 13 Apr 2011 08:50:28 -0700
From:	Greg KH <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org, stable@...nel.org
Cc:	stable-review@...nel.org, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	Stanislaw Gruszka <sgruszka@...hat.com>,
	"David S. Miller" <davem@...emloft.net>
Subject: [04/74] myri10ge: fix rmmod crash

2.6.32-longterm review patch.  If anyone has any objections, please let us know.

------------------

From: Stanislaw Gruszka <sgruszka@...hat.com>

commit cda6587c21a887254c8ed4b58da8fcc4040ab557 upstream.

Rmmod myri10ge crash at free_netdev() -> netif_napi_del(), because napi
structures are already deallocated. To fix call netif_napi_del() before
kfree() at myri10ge_free_slices().

Signed-off-by: Stanislaw Gruszka <sgruszka@...hat.com>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>

---
 drivers/net/myri10ge/myri10ge.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/net/myri10ge/myri10ge.c
+++ b/drivers/net/myri10ge/myri10ge.c
@@ -3640,6 +3640,7 @@ static void myri10ge_free_slices(struct
 			dma_free_coherent(&pdev->dev, bytes,
 					  ss->fw_stats, ss->fw_stats_bus);
 			ss->fw_stats = NULL;
+			netif_napi_del(&ss->napi);
 		}
 	}
 	kfree(mgp->ss);


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