diff options
| author | Jisheng Zhang <Jisheng.Zhang@synaptics.com> | 2020-04-03 10:23:29 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-04-13 10:32:54 +0200 |
| commit | d0eae22fbe98e30a45d5f93fa9ada90756a654d5 (patch) | |
| tree | 09731a93d929de81b10eae6ea4927453a0920142 | |
| parent | 02b303a93906facb61b560dbb7c882e4e34dd68d (diff) | |
net: stmmac: dwmac1000: fix out-of-bounds mac address reg setting
[ Upstream commit 3e1221acf6a8f8595b5ce354bab4327a69d54d18 ]
Commit 9463c4455900 ("net: stmmac: dwmac1000: Clear unused address
entries") cleared the unused mac address entries, but introduced an
out-of bounds mac address register programming bug -- After setting
the secondary unicast mac addresses, the "reg" value has reached
netdev_uc_count() + 1, thus we should only clear address entries
if (addr < perfect_addr_number)
Fixes: 9463c4455900 ("net: stmmac: dwmac1000: Clear unused address entries")
Signed-off-by: Jisheng Zhang <Jisheng.Zhang@synaptics.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c b/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c index 093e58e94075..3a2edf9f51e2 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c @@ -214,7 +214,7 @@ static void dwmac1000_set_filter(struct mac_device_info *hw, reg++; } - while (reg <= perfect_addr_number) { + while (reg < perfect_addr_number) { writel(0, ioaddr + GMAC_ADDR_HIGH(reg)); writel(0, ioaddr + GMAC_ADDR_LOW(reg)); reg++; |