diff options
| author | Mirko Lindner <mlindner@marvell.com> | 2014-11-26 15:13:38 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-11-26 15:16:40 -0500 |
| commit | 799d2fff1858004526ad75d66a5dd8a5cce6ad40 (patch) | |
| tree | b3317050cc122aa49dd3b65bcac47dfd1c9969d1 /drivers | |
| parent | 92c7b0de6a4e248ad7fa5268ce0466c572142758 (diff) | |
| download | linux-799d2fff1858004526ad75d66a5dd8a5cce6ad40.tar.bz2 | |
sky2: Fix crash inside sky2_rx_clean
If sky2->tx_le = pci_alloc_consistent() or sky2->tx_ring = kcalloc() in
sky2_alloc_buffers() fails, sky2->rx_ring = kcalloc() will never be called.
In this error case handling, sky2_rx_clean() is called from within
sky2_free_buffers().
In sky2_rx_clean() we find the following:
...
memset(sky2->rx_le, 0, RX_LE_BYTES);
...
This results in a memset using a NULL pointer and will crash the system.
Signed-off-by: Mirko Lindner <mlindner@marvell.com>
Acked-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/ethernet/marvell/sky2.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/net/ethernet/marvell/sky2.c b/drivers/net/ethernet/marvell/sky2.c index 53a1cc52d496..f8ab220bd72c 100644 --- a/drivers/net/ethernet/marvell/sky2.c +++ b/drivers/net/ethernet/marvell/sky2.c @@ -1361,7 +1361,9 @@ static void sky2_rx_clean(struct sky2_port *sky2) { unsigned i; - memset(sky2->rx_le, 0, RX_LE_BYTES); + if (sky2->rx_le) + memset(sky2->rx_le, 0, RX_LE_BYTES); + for (i = 0; i < sky2->rx_pending; i++) { struct rx_ring_info *re = sky2->rx_ring + i; |