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wifi: cfg80211: sme: init n_channels before channels[] access

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With the __counted_by annocation in cfg80211_scan_request struct,
the "n_channels" struct member must be set before accessing the
"channels" array. Failing to do so will trigger a runtime warning
when enabling CONFIG_UBSAN_BOUNDS and CONFIG_FORTIFY_SOURCE.

Fixes: e3eac9f32e ("wifi: cfg80211: Annotate struct cfg80211_scan_request with __counted_by")
Signed-off-by: Haoyu Li <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Johannes Berg <[email protected]>
This commit is contained in:
Haoyu Li authored and Johannes Berg committed 2024-12-06 10:45:22 +01:00
1 parent 819e0f1e58
commit f1d3334d60
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net/wireless/sme.c
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@@ -83,6 +83,7 @@ static int cfg80211_conn_scan(struct wireless_dev *wdev)
if (!request)
return -ENOMEM;
request->n_channels = n_channels;
if (wdev->conn->params.channel) {
enum nl80211_band band = wdev->conn->params.channel->band;
struct ieee80211_supported_band *sband =