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Message-Id: <200701221921.58979.mb@bu3sch.de> Date: Mon, 22 Jan 2007 19:21:58 +0100 From: Michael Buesch <mb@...sch.de> To: Pavel Roskin <proski@....org> Cc: netdev@...r.kernel.org Subject: Re: [PATCH] bcm43xx_d80211: Fix major memory corruption bug On Sunday 21 January 2007 06:27, Pavel Roskin wrote: > Set phy->lo_control to NULL whenever it's freed. Failure to do so leads > to zeroing a block of memory that uses to hold *phy->lo_control, which > caused random crashes down the road. > > Signed-off-by: Pavel Roskin <proski@....org> Good catch. Thanks. > --- > > drivers/net/wireless/d80211/bcm43xx/bcm43xx_main.c | 2 ++ > 1 files changed, 2 insertions(+), 0 deletions(-) > > diff --git a/drivers/net/wireless/d80211/bcm43xx/bcm43xx_main.c b/drivers/net/wireless/d80211/bcm43xx/bcm43xx_main.c > index 3064322..62d4dc9 100644 > --- a/drivers/net/wireless/d80211/bcm43xx/bcm43xx_main.c > +++ b/drivers/net/wireless/d80211/bcm43xx/bcm43xx_main.c > @@ -3048,6 +3048,7 @@ static void bcm43xx_wireless_core_exit(struct bcm43xx_wldev *dev) > if (phy->dyn_tssi_tbl) > kfree(phy->tssi2dbm); > kfree(phy->lo_control); > + phy->lo_control = NULL; > ssb_chipco_set_clockmode(chipco, SSB_CLKMODE_SLOW); > bcm43xx_vstack_free(&dev->genstack); > bcm43xx_set_status(dev, BCM43xx_STAT_UNINIT); > @@ -3179,6 +3180,7 @@ err_kfree_tssitbl: > kfree(phy->tssi2dbm); > err_kfree_lo_control: > kfree(phy->lo_control); > + phy->lo_control = NULL; > err_slowclock: > ssb_chipco_set_clockmode(chipco, SSB_CLKMODE_SLOW); > bcm43xx_set_status(dev, BCM43xx_STAT_UNINIT); > > > -- Greetings Michael. - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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