On Sun, 2017-09-03 at 14:32 +0200, Christian Lamparter wrote: > On Saturday, September 2, 2017 8:51:01 AM CEST Joe Perches wrote: > > On Thu, 2017-08-31 at 09:40 -0700, Joe Perches wrote: > > > On Thu, 2017-08-31 at 17:44 +0200, Greg Kroah-Hartman wrote: > > > > 4.9-stable review patch. If anyone has any objections, please let me know. [] > > > > +++ b/drivers/net/wireless/intersil/p54/fwio.c > > > > @@ -488,7 +488,7 @@ int p54_scan(struct p54_common *priv, u1 > > > > > > > > entry += sizeof(__le16); > > > > chan->pa_points_per_curve = 8; > > > > - memset(chan->curve_data, 0, sizeof(*chan->curve_data)); > > > > + memset(chan->curve_data, 0, sizeof(chan->curve_data)); > > > > memcpy(chan->curve_data, entry, > > > > sizeof(struct p54_pa_curve_data_sample) * > > > > min((u8)8, curve_data->points_per_channel)); > > > > > > > > Why is this change correct? > > > > > > curve_data is a pointer. > > > > > > This now clears the sizeof a pointer and not > > > the sizeof struct p54_cal_database > > > > So what happens here? > > This change seems clearly incorrect. > > For all stable versions. > > hm? > > Please, just look again at [0]: [] > yes: "curve_data" is a pointer. Thank you. My mistake, curve_data here is an array of structs. > This means that chan->curve_data is 64 bytes in total. I saw only: drivers/net/wireless/intersil/p54/p54.h: struct p54_cal_database *curve_data; and did not notice drivers/net/wireless/intersil/p54/lmac.h: struct p54_pa_curve_data_sample curve_data[8];