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authorJohannes Berg <johannes.berg@intel.com>2019-09-23 14:51:16 +0300
committerJohannes Berg <johannes.berg@intel.com>2019-10-01 18:56:18 +0300
commitf43e5210c739fe76a4b0ed851559d6902f20ceb1 (patch)
treede93e4b4a1738b2373d6492e67c2a9979ef5b540 /net/wireless
parent242b0931c1918c56cd1dc5563fd250a3c39b996d (diff)
downloadlinux-f43e5210c739fe76a4b0ed851559d6902f20ceb1.tar.xz
cfg80211: initialize on-stack chandefs
In a few places we don't properly initialize on-stack chandefs, resulting in EDMG data to be non-zero, which broke things. Additionally, in a few places we rely on the driver to init the data completely, but perhaps we shouldn't as non-EDMG drivers may not initialize the EDMG data, also initialize it there. Cc: stable@vger.kernel.org Fixes: 2a38075cd0be ("nl80211: Add support for EDMG channels") Reported-by: Dmitry Osipenko <digetx@gmail.com> Tested-by: Dmitry Osipenko <digetx@gmail.com> Link: https://lore.kernel.org/r/1569239475-I2dcce394ecf873376c386a78f31c2ec8b538fa25@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/wireless')
-rw-r--r--net/wireless/nl80211.c4
-rw-r--r--net/wireless/reg.c2
-rw-r--r--net/wireless/wext-compat.c2
3 files changed, 5 insertions, 3 deletions
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 7386421e2ad3..10617566a117 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -2669,6 +2669,8 @@ int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
control_freq = nla_get_u32(attrs[NL80211_ATTR_WIPHY_FREQ]);
+ memset(chandef, 0, sizeof(*chandef));
+
chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
chandef->center_freq1 = control_freq;
@@ -3209,7 +3211,7 @@ static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flag
if (rdev->ops->get_channel) {
int ret;
- struct cfg80211_chan_def chandef;
+ struct cfg80211_chan_def chandef = {};
ret = rdev_get_channel(rdev, wdev, &chandef);
if (ret == 0) {
diff --git a/net/wireless/reg.c b/net/wireless/reg.c
index 5311d0ae2454..420c4207ab59 100644
--- a/net/wireless/reg.c
+++ b/net/wireless/reg.c
@@ -2108,7 +2108,7 @@ static void reg_call_notifier(struct wiphy *wiphy,
static bool reg_wdev_chan_valid(struct wiphy *wiphy, struct wireless_dev *wdev)
{
- struct cfg80211_chan_def chandef;
+ struct cfg80211_chan_def chandef = {};
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
enum nl80211_iftype iftype;
diff --git a/net/wireless/wext-compat.c b/net/wireless/wext-compat.c
index 7b6529d81c61..cac9e28d852b 100644
--- a/net/wireless/wext-compat.c
+++ b/net/wireless/wext-compat.c
@@ -798,7 +798,7 @@ static int cfg80211_wext_giwfreq(struct net_device *dev,
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
- struct cfg80211_chan_def chandef;
+ struct cfg80211_chan_def chandef = {};
int ret;
switch (wdev->iftype) {