4.19-stable review patch. If anyone has any objections, please let me know.
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From: Benjamin Berg benjamin.berg@intel.com
[ Upstream commit 334bf33eec5701a1e4e967bcb7cc8611a998334b ]
If the structure is not initialized then boolean types might be copied into the tracing data without being initialised. This causes data from the stack to leak into the trace and also triggers a UBSAN failure which can easily be avoided here.
Signed-off-by: Benjamin Berg benjamin.berg@intel.com Link: https://lore.kernel.org/r/20230925171855.a9271ef53b05.I8180bae663984c91a3e03... Signed-off-by: Johannes Berg johannes.berg@intel.com Signed-off-by: Sasha Levin sashal@kernel.org --- net/wireless/nl80211.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 534f57363f4ae..e33c1175b1582 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -6504,7 +6504,7 @@ static int nl80211_update_mesh_config(struct sk_buff *skb, struct cfg80211_registered_device *rdev = info->user_ptr[0]; struct net_device *dev = info->user_ptr[1]; struct wireless_dev *wdev = dev->ieee80211_ptr; - struct mesh_config cfg; + struct mesh_config cfg = {}; u32 mask; int err;