| Message ID | 20241024111921.93105-2-dmantipov@yandex.ru (mailing list archive) |
|---|---|
| State | New |
| Delegated to: | Kalle Valo |
| Headers | show |
| Series | [v2,1/3] wifi: ath11k: annotate skb of struct ath11k_ce_ring with __counted_by | expand |
diff --git a/drivers/net/wireless/ath/ath11k/reg.c b/drivers/net/wireless/ath/ath11k/reg.c index b0f289784dd3..0a8a0ea2bdc7 100644 --- a/drivers/net/wireless/ath/ath11k/reg.c +++ b/drivers/net/wireless/ath/ath11k/reg.c @@ -164,6 +164,9 @@ int ath11k_reg_update_chan_list(struct ath11k *ar, bool wait) return -ENOMEM; params->pdev_id = ar->pdev->pdev_id; + /* Note nallchans should be set before populating ch_param[], + * otherwise __counted_by() might raise false positives. + */ params->nallchans = num_channels; ch = params->ch_param; diff --git a/drivers/net/wireless/ath/ath11k/wmi.h b/drivers/net/wireless/ath/ath11k/wmi.h index 8982b909c821..58471da42087 100644 --- a/drivers/net/wireless/ath/ath11k/wmi.h +++ b/drivers/net/wireless/ath/ath11k/wmi.h @@ -3819,7 +3819,7 @@ struct wmi_stop_scan_cmd { struct scan_chan_list_params { u32 pdev_id; u16 nallchans; - struct channel_param ch_param[]; + struct channel_param ch_param[] __counted_by(nallchans); }; struct wmi_scan_chan_list_cmd {
According to 'ath11k_reg_update_chan_list()', annotate flexible array member 'ch_param' of 'struct scan_chan_list_params' with '__counted_by()' attribute to improve runtime bounds checking when CONFIG_UBSAN_BOUNDS is enabled. Compile tested only. Signed-off-by: Dmitry Antipov <dmantipov@yandex.ru> --- v2: add related comment in ath11k_reg_update_chan_list() --- drivers/net/wireless/ath/ath11k/reg.c | 3 +++ drivers/net/wireless/ath/ath11k/wmi.h | 2 +- 2 files changed, 4 insertions(+), 1 deletion(-)