diff options
| author | Ben Greear <greearb@candelatech.com> | 2022-09-29 08:15:25 -0700 |
|---|---|---|
| committer | Felix Fietkau <nbd@nbd.name> | 2022-12-01 17:29:12 +0100 |
| commit | 2b685ba7d4247d7707af795719f4f33c9019feb6 (patch) | |
| tree | 34b3668958fb875b03dd76b5a5b0b51afe4f9e1c /drivers | |
| parent | 03c2dd4d01a20edbadee408a622dee5e8a27f1e6 (diff) | |
wifi: mt76: mt7915: fix bounds checking for tx-free-done command
According to the tx-free-done documentation, the DW4 can be repeated,
so have to be more careful about how we test for walking off the
end of the array.
Signed-off-by: Ben Greear <greearb@candelatech.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/wireless/mediatek/mt76/mt7915/mac.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c index a4bcc617c1a3..89a3810ee53f 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c +++ b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c @@ -905,17 +905,19 @@ mt7915_mac_tx_free(struct mt7915_dev *dev, void *data, int len) total = le16_get_bits(free->ctrl, MT_TX_FREE_MSDU_CNT); v3 = (FIELD_GET(MT_TX_FREE_VER, txd) == 0x4); - if (WARN_ON_ONCE((void *)&tx_info[total >> v3] > end)) - return; for (cur_info = tx_info; count < total; cur_info++) { - u32 msdu, info = le32_to_cpu(*cur_info); + u32 msdu, info; u8 i; + if (WARN_ON_ONCE((void *)cur_info >= end)) + return; + /* * 1'b1: new wcid pair. * 1'b0: msdu_id with the same 'wcid pair' as above. */ + info = le32_to_cpu(*cur_info); if (info & MT_TX_FREE_PAIR) { struct mt7915_sta *msta; struct mt76_wcid *wcid; |