On Tue, 2023-11-28 at 15:44 +0100, Michael Walle wrote:
> Hi,
>
> > net/wireless/nl80211.c: In function 'nl80211_set_cqm_rssi.isra':
> > net/wireless/nl80211.c:12892:17: warning: 'memcpy' specified bound
> > 18446744073709551615 exceeds maximum object size 9223372036854775807
> > [-Wstringop-overflow=]
>
> FWIW, I'm getting the same error with the current next (next-20231128).
>
I actually forgot about that, but does anyone actually know what this is
trying to tell me?
The code seems to be
if (n_thresholds) {
cqm_config = kzalloc(struct_size(cqm_config, rssi_thresholds,
n_thresholds),
GFP_KERNEL);
if (!cqm_config)
return -ENOMEM;
cqm_config->rssi_hyst = hysteresis;
cqm_config->n_rssi_thresholds = n_thresholds;
memcpy(cqm_config->rssi_thresholds, thresholds,
flex_array_size(cqm_config, rssi_thresholds,
n_thresholds));
Or does it just want to say n_thresholds shouldn't be a signed variable?
johannes
