mac80211: initialize variable have_higher_than_11mbit

commit 68a18ad71378a56858141c4449e02a30c829763e upstream.

Clang static analysis reports this warnings

mlme.c:5332:7: warning: Branch condition evaluates to a
  garbage value
    have_higher_than_11mbit)
    ^~~~~~~~~~~~~~~~~~~~~~~

have_higher_than_11mbit is only set to true some of the time in
ieee80211_get_rates() but is checked all of the time.  So
have_higher_than_11mbit needs to be initialized to false.

Fixes: 5d6a1b069b7f ("mac80211: set basic rates earlier")
Signed-off-by: Tom Rix <trix@redhat.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Link: https://lore.kernel.org/r/20211223162848.3243702-1-trix@redhat.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index 7e2f0cd94e628ec4b8621f9a74bcd35569b2ce66..f6887a41f85bfbb3a477aa20d78a00e7d96d3685 100644 (file)
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -4431,7 +4431,7 @@ static int ieee80211_prep_connection(struct ieee80211_sub_if_data *sdata,
 
        if (new_sta) {
                u32 rates = 0, basic_rates = 0;
-               bool have_higher_than_11mbit;
+               bool have_higher_than_11mbit = false;
                int min_rate = INT_MAX, min_rate_index = -1;
                struct ieee80211_chanctx_conf *chanctx_conf;
                const struct cfg80211_bss_ies *ies;