diff options
| author | Baochen Qiang <quic_bqiang@quicinc.com> | 2024-07-22 11:33:32 +0800 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2024-07-26 12:33:38 +0200 |
| commit | 189d7aae8f5a100b0db8b302debbd445475d01e6 (patch) | |
| tree | f39fda931a277da5d8d379e4522d2c7f7b9e5a7e /drivers/fpga/of-fpga-region.c | |
| parent | 6873cc4416078202882691b424fcca5b5fb1a94d (diff) | |
wifi: ath12k: fix reusing outside iterator in ath12k_wow_vif_set_wakeups()
Smatch throws below warning:
drivers/net/wireless/ath/ath12k/wow.c:434 ath12k_wow_vif_set_wakeups()
warn: reusing outside iterator: 'i'
drivers/net/wireless/ath/ath12k/wow.c
411 default:
412 break;
413 }
414
415 for (i = 0; i < wowlan->n_patterns; i++) {
^^^^^^^^^^^^^^^^^^^^^^
Here we loop until ->n_patterns
416 const struct cfg80211_pkt_pattern *eth_pattern = &patterns[i];
417 struct ath12k_pkt_pattern new_pattern = {};
418
419 if (WARN_ON(eth_pattern->pattern_len > WOW_MAX_PATTERN_SIZE))
420 return -EINVAL;
421
422 if (ar->ab->wow.wmi_conf_rx_decap_mode ==
423 ATH12K_HW_TXRX_NATIVE_WIFI) {
424 ath12k_wow_convert_8023_to_80211(ar, eth_pattern,
425 &new_pattern);
426
427 if (WARN_ON(new_pattern.pattern_len > WOW_MAX_PATTERN_SIZE))
428 return -EINVAL;
429 } else {
430 memcpy(new_pattern.pattern, eth_pattern->pattern,
431 eth_pattern->pattern_len);
432
433 /* convert bitmask to bytemask */
--> 434 for (i = 0; i < eth_pattern->pattern_len; i++)
435 if (eth_pattern->mask[i / 8] & BIT(i % 8))
436 new_pattern.bytemask[i] = 0xff;
This loop re-uses i and the loop ends with i == eth_pattern->pattern_len.
This looks like a bug.
Change to use a new iterator 'j' for the inner loop to fix it.
Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0-03427-QCAHMTSWPL_V1.0_V2.0_SILICONZ-1.15378.4
Fixes: 4a3c212eee0e ("wifi: ath12k: add basic WoW functionalities")
Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Closes: https://lore.kernel.org/all/d4975b95-9c43-45af-a0ab-80253f18c7f2@stanley.mountain/
Signed-off-by: Baochen Qiang <quic_bqiang@quicinc.com>
Acked-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Link: https://patch.msgid.link/20240722033332.6273-1-quic_bqiang@quicinc.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'drivers/fpga/of-fpga-region.c')
0 files changed, 0 insertions, 0 deletions