| Message ID | ZXiU9ayVCslt3qiI@work |
|---|---|
| State | New |
| Headers | show |
| Series | [v2,wireless-next/for-next] wifi: mt76: mt7996: Use DECLARE_FLEX_ARRAY() and fix -Warray-bounds warnings | expand |
"Gustavo A. R. Silva" <gustavoars@kernel.org> wrote: > Transform zero-length arrays `rate`, `adm_stat` and `msdu_cnt` into > proper flexible-array members in anonymous union in `struct > mt7996_mcu_all_sta_info_event` via the DECLARE_FLEX_ARRAY() > helper; and fix multiple -Warray-bounds warnings: > > drivers/net/wireless/mediatek/mt76/mt7996/mcu.c:544:61: warning: array subscript <unknown> is outside array bounds of 'struct <anonymous>[0]' [-Warray-bounds=] > drivers/net/wireless/mediatek/mt76/mt7996/mcu.c:551:58: warning: array subscript <unknown> is outside array bounds of 'struct <anonymous>[0]' [-Warray-bounds=] > drivers/net/wireless/mediatek/mt76/mt7996/mcu.c:553:58: warning: array subscript <unknown> is outside array bounds of 'struct <anonymous>[0]' [-Warray-bounds=] > drivers/net/wireless/mediatek/mt76/mt7996/mcu.c:530:61: warning: array subscript <unknown> is outside array bounds of 'struct <anonymous>[0]' [-Warray-bounds=] > drivers/net/wireless/mediatek/mt76/mt7996/mcu.c:538:66: warning: array subscript <unknown> is outside array bounds of 'struct <anonymous>[0]' [-Warray-bounds=] > drivers/net/wireless/mediatek/mt76/mt7996/mcu.c:540:66: warning: array subscript <unknown> is outside array bounds of 'struct <anonymous>[0]' [-Warray-bounds=] > drivers/net/wireless/mediatek/mt76/mt7996/mcu.c:520:57: warning: array subscript <unknown> is outside array bounds of 'struct all_sta_trx_rate[0]' [-Warray-bounds=] > drivers/net/wireless/mediatek/mt76/mt7996/mcu.c:526:76: warning: array subscript <unknown> is outside array bounds of 'struct all_sta_trx_rate[0]' [-Warray-bounds=] > drivers/net/wireless/mediatek/mt76/mt7996/mcu.c:526:76: warning: array subscript <unknown> is outside array bounds of 'struct all_sta_trx_rate[0]' [-Warray-bounds=] > drivers/net/wireless/mediatek/mt76/mt7996/mcu.c:526:76: warning: array subscript <unknown> is outside array bounds of 'struct all_sta_trx_rate[0]' [-Warray-bounds=] > drivers/net/wireless/mediatek/mt76/mt7996/mcu.c:526:76: warning: array subscript <unknown> is outside array bounds of 'struct all_sta_trx_rate[0]' [-Warray-bounds=] > > This results in no differences in binary output, helps with the ongoing > efforts to globally enable -Warray-bounds. > > Reviewed-by: Kees Cook <keescook@chromium.org> > Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org> I'll take this directly wireless-next, ok?
On 12/15/23 07:29, Kalle Valo wrote: > "Gustavo A. R. Silva" <gustavoars@kernel.org> wrote: > >> Transform zero-length arrays `rate`, `adm_stat` and `msdu_cnt` into >> proper flexible-array members in anonymous union in `struct >> mt7996_mcu_all_sta_info_event` via the DECLARE_FLEX_ARRAY() >> helper; and fix multiple -Warray-bounds warnings: [..] >> >> This results in no differences in binary output, helps with the ongoing >> efforts to globally enable -Warray-bounds. >> >> Reviewed-by: Kees Cook <keescook@chromium.org> >> Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org> > > I'll take this directly wireless-next, ok? > Yep, sounds good. Thanks! -- Gustavo
"Gustavo A. R. Silva" <gustavoars@kernel.org> wrote: > Transform zero-length arrays `rate`, `adm_stat` and `msdu_cnt` into > proper flexible-array members in anonymous union in `struct > mt7996_mcu_all_sta_info_event` via the DECLARE_FLEX_ARRAY() > helper; and fix multiple -Warray-bounds warnings: > > drivers/net/wireless/mediatek/mt76/mt7996/mcu.c:544:61: warning: array subscript <unknown> is outside array bounds of 'struct <anonymous>[0]' [-Warray-bounds=] > drivers/net/wireless/mediatek/mt76/mt7996/mcu.c:551:58: warning: array subscript <unknown> is outside array bounds of 'struct <anonymous>[0]' [-Warray-bounds=] > drivers/net/wireless/mediatek/mt76/mt7996/mcu.c:553:58: warning: array subscript <unknown> is outside array bounds of 'struct <anonymous>[0]' [-Warray-bounds=] > drivers/net/wireless/mediatek/mt76/mt7996/mcu.c:530:61: warning: array subscript <unknown> is outside array bounds of 'struct <anonymous>[0]' [-Warray-bounds=] > drivers/net/wireless/mediatek/mt76/mt7996/mcu.c:538:66: warning: array subscript <unknown> is outside array bounds of 'struct <anonymous>[0]' [-Warray-bounds=] > drivers/net/wireless/mediatek/mt76/mt7996/mcu.c:540:66: warning: array subscript <unknown> is outside array bounds of 'struct <anonymous>[0]' [-Warray-bounds=] > drivers/net/wireless/mediatek/mt76/mt7996/mcu.c:520:57: warning: array subscript <unknown> is outside array bounds of 'struct all_sta_trx_rate[0]' [-Warray-bounds=] > drivers/net/wireless/mediatek/mt76/mt7996/mcu.c:526:76: warning: array subscript <unknown> is outside array bounds of 'struct all_sta_trx_rate[0]' [-Warray-bounds=] > drivers/net/wireless/mediatek/mt76/mt7996/mcu.c:526:76: warning: array subscript <unknown> is outside array bounds of 'struct all_sta_trx_rate[0]' [-Warray-bounds=] > drivers/net/wireless/mediatek/mt76/mt7996/mcu.c:526:76: warning: array subscript <unknown> is outside array bounds of 'struct all_sta_trx_rate[0]' [-Warray-bounds=] > drivers/net/wireless/mediatek/mt76/mt7996/mcu.c:526:76: warning: array subscript <unknown> is outside array bounds of 'struct all_sta_trx_rate[0]' [-Warray-bounds=] > > This results in no differences in binary output, helps with the ongoing > efforts to globally enable -Warray-bounds. > > Reviewed-by: Kees Cook <keescook@chromium.org> > Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org> Patch applied to wireless-next.git, thanks. 40d51f70f082 wifi: mt76: mt7996: Use DECLARE_FLEX_ARRAY() and fix -Warray-bounds warnings
diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/mcu.h b/drivers/net/wireless/mediatek/mt76/mt7996/mcu.h index 3e013b20ee5e..36cacc495c75 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7996/mcu.h +++ b/drivers/net/wireless/mediatek/mt76/mt7996/mcu.h @@ -206,20 +206,20 @@ struct mt7996_mcu_all_sta_info_event { u8 rsv3[4]; union { - struct all_sta_trx_rate rate[0]; - struct { + DECLARE_FLEX_ARRAY(struct all_sta_trx_rate, rate); + DECLARE_FLEX_ARRAY(struct { __le16 wlan_idx; u8 rsv[2]; __le32 tx_bytes[IEEE80211_NUM_ACS]; __le32 rx_bytes[IEEE80211_NUM_ACS]; - } adm_stat[0] __packed; + } __packed, adm_stat); - struct { + DECLARE_FLEX_ARRAY(struct { __le16 wlan_idx; u8 rsv[2]; __le32 tx_msdu_cnt; __le32 rx_msdu_cnt; - } msdu_cnt[0] __packed; + } __packed, msdu_cnt); } __packed; } __packed;