diff options
| author | Ping-Ke Shih <pkshih@realtek.com> | 2022-05-16 08:52:12 +0800 |
|---|---|---|
| committer | Kalle Valo <kvalo@kernel.org> | 2022-05-17 18:31:59 +0300 |
| commit | 97df85871a5b187609d30fca6d85b912d9e02f29 (patch) | |
| tree | 919777c3132530446167d233f0e5f84a48de4ff2 /drivers/net/wireless | |
| parent | d3efeee240f8dce123eb8569dc953f6cb3af3f17 (diff) | |
| download | linux-97df85871a5b187609d30fca6d85b912d9e02f29.tar.bz2 | |
rtw89: cfo: check mac_id to avoid out-of-bounds
Somehow, hardware reports incorrect mac_id and pollute memory. Check index
before we access the array.
UBSAN: array-index-out-of-bounds in rtw89/phy.c:2517:23
index 188 is out of range for type 's32 [64]'
CPU: 1 PID: 51550 Comm: irq/35-rtw89_pc Tainted: G OE
Call Trace:
<IRQ>
show_stack+0x52/0x58
dump_stack_lvl+0x4c/0x63
dump_stack+0x10/0x12
ubsan_epilogue+0x9/0x45
__ubsan_handle_out_of_bounds.cold+0x44/0x49
? __alloc_skb+0x92/0x1d0
rtw89_phy_cfo_parse+0x44/0x7f [rtw89_core]
rtw89_core_rx+0x261/0x871 [rtw89_core]
? __alloc_skb+0xee/0x1d0
rtw89_pci_napi_poll+0x3fa/0x4ea [rtw89_pci]
__napi_poll+0x33/0x1a0
net_rx_action+0x126/0x260
? __queue_work+0x217/0x4c0
__do_softirq+0xd9/0x315
? disable_irq_nosync+0x10/0x10
do_softirq.part.0+0x6d/0x90
</IRQ>
<TASK>
__local_bh_enable_ip+0x62/0x70
rtw89_pci_interrupt_threadfn+0x182/0x1a6 [rtw89_pci]
irq_thread_fn+0x28/0x60
irq_thread+0xc8/0x190
? irq_thread_fn+0x60/0x60
kthread+0x16b/0x190
? irq_thread_check_affinity+0xe0/0xe0
? set_kthread_struct+0x50/0x50
ret_from_fork+0x22/0x30
</TASK>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20220516005215.5878-4-pkshih@realtek.com
Diffstat (limited to 'drivers/net/wireless')
| -rw-r--r-- | drivers/net/wireless/realtek/rtw89/phy.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/net/wireless/realtek/rtw89/phy.c b/drivers/net/wireless/realtek/rtw89/phy.c index c9a4ae989ac7..79e4c28495c8 100644 --- a/drivers/net/wireless/realtek/rtw89/phy.c +++ b/drivers/net/wireless/realtek/rtw89/phy.c @@ -2462,6 +2462,11 @@ void rtw89_phy_cfo_parse(struct rtw89_dev *rtwdev, s16 cfo_val, struct rtw89_cfo_tracking_info *cfo = &rtwdev->cfo_tracking; u8 macid = phy_ppdu->mac_id; + if (macid >= CFO_TRACK_MAX_USER) { + rtw89_warn(rtwdev, "mac_id %d is out of range\n", macid); + return; + } + cfo->cfo_tail[macid] += cfo_val; cfo->cfo_cnt[macid]++; cfo->packet_count++; |