diff options
| author | Sean Wang <sean.wang@mediatek.com> | 2021-11-30 07:05:28 +0800 |
|---|---|---|
| committer | Felix Fietkau <nbd@nbd.name> | 2021-12-19 15:24:02 +0100 |
| commit | 2b7f3574ca9a7ff4a6b4ec1ae4dfdfde481ac80b (patch) | |
| tree | 8fb84a137878ba8173885bb3aef89c27dfc19a6f /drivers/net/wireless/mediatek | |
| parent | 78b217580c50994ae22dde4ecaaf147de0f355f6 (diff) | |
mt76: mt7921s: fix possible kernel crash due to invalid Rx count
Return the proper error code when out-of-range the Rx aggregation count
are reported from the hardware that would create the unreasonable extreme
large Rx buffer.
[ 100.873810] show_stack+0x20/0x2c
[ 100.873823] dump_stack+0xc4/0x140
[ 100.873839] bad_page+0x110/0x114
[ 100.873854] check_new_pages+0xf8/0xfc
[ 100.873869] rmqueue+0x5a0/0x640
[ 100.873884] get_page_from_freelist+0x124/0x20c
[ 100.873898] __alloc_pages_nodemask+0x114/0x2a4
[ 100.873918] mt76s_rx_run_queue+0xd4/0x2e4 [mt76_sdio 8280a88a0c8c9cf203f16e194f99ac293bdbb2f5]
[ 100.873938] mt76s_rx_handler+0xd4/0x2a0 [mt76_sdio 8280a88a0c8c9cf203f16e194f99ac293bdbb2f5]
[ 100.873957] mt76s_txrx_worker+0xac/0x17c [mt76_sdio 8280a88a0c8c9cf203f16e194f99ac293bdbb2f5]
[ 100.873977] mt7921s_txrx_worker+0x5c/0xd8 [mt7921s d0bdbc018082dbc8dc1407614be3c2e7bd64423b]
[ 100.874003] __mt76_worker_fn+0xe8/0x170 [mt76 b80af3483a8f9d48e916c12d8dbfaa0d3cd15337]
[ 100.874018] kthread+0x148/0x3ac
[ 100.874032] ret_from_fork+0x10/0x30
[ 100.874067] Kernel Offset: 0x1fe2000000 from 0xffffffc010000000
[ 100.874079] PHYS_OFFSET: 0xffffffe800000000
[ 100.874090] CPU features: 0x0240002,2188200c
Fixes: 48fab5bbef40 ("mt76: mt7921: introduce mt7921s support")
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Diffstat (limited to 'drivers/net/wireless/mediatek')
| -rw-r--r-- | drivers/net/wireless/mediatek/mt76/mt7921/sdio.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/sdio.c b/drivers/net/wireless/mediatek/mt76/mt7921/sdio.c index 5c88b6b8d097..84be229a899d 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7921/sdio.c +++ b/drivers/net/wireless/mediatek/mt76/mt7921/sdio.c @@ -62,6 +62,10 @@ static int mt7921s_parse_intr(struct mt76_dev *dev, struct mt76s_intr *intr) if (err < 0) return err; + if (irq_data->rx.num[0] > 16 || + irq_data->rx.num[1] > 128) + return -EINVAL; + intr->isr = irq_data->isr; intr->rec_mb = irq_data->rec_mb; intr->tx.wtqcr = irq_data->tx.wtqcr; |