| Message ID | 20220219152912.93580-1-jrdr.linux@gmail.com (mailing list archive) |
|---|---|
| State | Changes Requested |
| Delegated to: | Kalle Valo |
| Headers | show |
| Series | wcn36xx: Initialize channel to NULL inside wcn36xx_change_opchannel() | expand |
On Sat, 19 Feb 2022 at 16:29, Souptick Joarder <jrdr.linux@gmail.com> wrote: > > From: "Souptick Joarder (HPE)" <jrdr.linux@gmail.com> > > Kernel test robot reported below warning -> > drivers/net/wireless/ath/wcn36xx/main.c:409:7: warning: Branch > condition evaluates to a garbage value > [clang-analyzer-core.uninitialized.Branch] > > Also code walk indicates, if channel is not found in first band, > it will break the loop and instead of exit it will go ahead and > assign a garbage value in wcn->channel which looks like a bug. > > Initialize channel with NULL should avoid this issue. > > Fixes: d6f2746691cb ("wcn36xx: Track the band and channel we are tuned to") > Reported-by: kernel test robot <lkp@intel.com> > Signed-off-by: Souptick Joarder (HPE) <jrdr.linux@gmail.com> Reviewed-by: Loic Poulain <loic.poulain@linaro.org> > --- > drivers/net/wireless/ath/wcn36xx/main.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/net/wireless/ath/wcn36xx/main.c b/drivers/net/wireless/ath/wcn36xx/main.c > index 75661d449712..1a06eff07107 100644 > --- a/drivers/net/wireless/ath/wcn36xx/main.c > +++ b/drivers/net/wireless/ath/wcn36xx/main.c > @@ -394,7 +394,7 @@ static void wcn36xx_change_opchannel(struct wcn36xx *wcn, int ch) > struct ieee80211_vif *vif = NULL; > struct wcn36xx_vif *tmp; > struct ieee80211_supported_band *band; > - struct ieee80211_channel *channel; > + struct ieee80211_channel *channel = NULL; > unsigned long flags; > int i, j; > > -- > 2.25.1 >
Souptick Joarder <jrdr.linux@gmail.com> writes: > From: "Souptick Joarder (HPE)" <jrdr.linux@gmail.com> > > Kernel test robot reported below warning -> > drivers/net/wireless/ath/wcn36xx/main.c:409:7: warning: Branch > condition evaluates to a garbage value > [clang-analyzer-core.uninitialized.Branch] > > Also code walk indicates, if channel is not found in first band, > it will break the loop and instead of exit it will go ahead and > assign a garbage value in wcn->channel which looks like a bug. > > Initialize channel with NULL should avoid this issue. > > Fixes: d6f2746691cb ("wcn36xx: Track the band and channel we are tuned to") > Reported-by: kernel test robot <lkp@intel.com> > Signed-off-by: Souptick Joarder (HPE) <jrdr.linux@gmail.com> > --- > drivers/net/wireless/ath/wcn36xx/main.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/net/wireless/ath/wcn36xx/main.c b/drivers/net/wireless/ath/wcn36xx/main.c > index 75661d449712..1a06eff07107 100644 > --- a/drivers/net/wireless/ath/wcn36xx/main.c > +++ b/drivers/net/wireless/ath/wcn36xx/main.c > @@ -394,7 +394,7 @@ static void wcn36xx_change_opchannel(struct wcn36xx *wcn, int ch) > struct ieee80211_vif *vif = NULL; > struct wcn36xx_vif *tmp; > struct ieee80211_supported_band *band; > - struct ieee80211_channel *channel; > + struct ieee80211_channel *channel = NULL; > unsigned long flags; > int i, j; I have already applied an identical patch from Dan: https://git.kernel.org/pub/scm/linux/kernel/git/kvalo/ath.git/commit/?h=ath-next&id=11e41e2929378df945bf50b95409d93059ad4507
diff --git a/drivers/net/wireless/ath/wcn36xx/main.c b/drivers/net/wireless/ath/wcn36xx/main.c index 75661d449712..1a06eff07107 100644 --- a/drivers/net/wireless/ath/wcn36xx/main.c +++ b/drivers/net/wireless/ath/wcn36xx/main.c @@ -394,7 +394,7 @@ static void wcn36xx_change_opchannel(struct wcn36xx *wcn, int ch) struct ieee80211_vif *vif = NULL; struct wcn36xx_vif *tmp; struct ieee80211_supported_band *band; - struct ieee80211_channel *channel; + struct ieee80211_channel *channel = NULL; unsigned long flags; int i, j;