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authorOlof Johansson <olof@lixom.net>2007-12-03 21:34:14 -0600
committerJeff Garzik <jeff@garzik.org>2007-12-04 14:53:49 -0500
commit4352d82647f679fb8dd9440b34400fa49beedb2c (patch)
tree667455cf1c3fa8c3085c93bbf3e0755b6fb28fe6 /drivers/net/pasemi_mac.c
parentd30f53aeb31d453a5230f526bea592af07944564 (diff)
downloadop-kernel-dev-4352d82647f679fb8dd9440b34400fa49beedb2c.zip
op-kernel-dev-4352d82647f679fb8dd9440b34400fa49beedb2c.tar.gz
pasemi_mac: Fix reuse of free'd skb
Turns out we're freeing the skb when we detect CRC error, but we're not clearing out info->skb. We could either clear it and have the stack reallocate it, or just leave it and the rx ring refill code will reuse the one that was allocated. Reusing a freed skb obviously caused some nasty crashes of various kind, as reported by Brent Baude and David Woodhouse. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'drivers/net/pasemi_mac.c')
-rw-r--r--drivers/net/pasemi_mac.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/pasemi_mac.c b/drivers/net/pasemi_mac.c
index a8db5d7..816a59e 100644
--- a/drivers/net/pasemi_mac.c
+++ b/drivers/net/pasemi_mac.c
@@ -586,7 +586,7 @@ static int pasemi_mac_clean_rx(struct pasemi_mac *mac, int limit)
/* CRC error flagged */
mac->netdev->stats.rx_errors++;
mac->netdev->stats.rx_crc_errors++;
- dev_kfree_skb_irq(skb);
+ /* No need to free skb, it'll be reused */
goto next;
}
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