From: Stephen Hemminger Date: Thu, 6 Apr 2006 00:47:15 +0000 (-0700) Subject: [PATCH] sky2: bad memory reference on dual port cards X-Git-Tag: v2.6.17-rc2~81^2~1 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=43f2f10444c008296cc8de68a72fd87b33b50452;p=linux-2.6 [PATCH] sky2: bad memory reference on dual port cards Sky2 driver will oops referencing bad memory if used on a dual port card. The problem is accessing past end of MIB counter space. Applies for both 2.6.17 and 2.6.16 (with fuzz) Signed-off-by: Stephen Hemminger Signed-off-by: Jeff Garzik --- diff --git a/drivers/net/sky2.c b/drivers/net/sky2.c index 4272e47258..67b0eab165 100644 --- a/drivers/net/sky2.c +++ b/drivers/net/sky2.c @@ -577,8 +577,8 @@ static void sky2_mac_init(struct sky2_hw *hw, unsigned port) reg = gma_read16(hw, port, GM_PHY_ADDR); gma_write16(hw, port, GM_PHY_ADDR, reg | GM_PAR_MIB_CLR); - for (i = 0; i < GM_MIB_CNT_SIZE; i++) - gma_read16(hw, port, GM_MIB_CNT_BASE + 8 * i); + for (i = GM_MIB_CNT_BASE; i <= GM_MIB_CNT_END; i += 4) + gma_read16(hw, port, i); gma_write16(hw, port, GM_PHY_ADDR, reg); /* transmit control */ diff --git a/drivers/net/sky2.h b/drivers/net/sky2.h index 62532b4e45..89dd18cd12 100644 --- a/drivers/net/sky2.h +++ b/drivers/net/sky2.h @@ -1375,7 +1375,7 @@ enum { GM_PHY_ADDR = 0x0088, /* 16 bit r/w GPHY Address Register */ /* MIB Counters */ GM_MIB_CNT_BASE = 0x0100, /* Base Address of MIB Counters */ - GM_MIB_CNT_SIZE = 256, + GM_MIB_CNT_END = 0x025C, /* Last MIB counter */ };