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authorDu Cheng <ducheng2@gmail.com>2021-04-07 19:27:56 +0300
committerJohannes Berg <johannes.berg@intel.com>2021-04-08 11:14:55 +0300
commit1b5ab825d9acc0f27d2f25c6252f3526832a9626 (patch)
treee7d7abc18959e5c741c430d84550a4fc465b4586
parent7d73cd946d4bc7d44cdc5121b1c61d5d71425dea (diff)
downloadlinux-1b5ab825d9acc0f27d2f25c6252f3526832a9626.tar.xz
cfg80211: remove WARN_ON() in cfg80211_sme_connect
A WARN_ON(wdev->conn) would trigger in cfg80211_sme_connect(), if multiple send_msg(NL80211_CMD_CONNECT) system calls are made from the userland, which should be anticipated and handled by the wireless driver. Remove this WARN_ON() to prevent kernel panic if kernel is configured to "panic_on_warn". Bug reported by syzbot. Reported-by: syzbot+5f9392825de654244975@syzkaller.appspotmail.com Signed-off-by: Du Cheng <ducheng2@gmail.com> Link: https://lore.kernel.org/r/20210407162756.6101-1-ducheng2@gmail.com Signed-off-by: Johannes Berg <johannes.berg@intel.com>
-rw-r--r--net/wireless/sme.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/wireless/sme.c b/net/wireless/sme.c
index 07756ca5e3b5..08a70b4f090c 100644
--- a/net/wireless/sme.c
+++ b/net/wireless/sme.c
@@ -529,7 +529,7 @@ static int cfg80211_sme_connect(struct wireless_dev *wdev,
cfg80211_sme_free(wdev);
}
- if (WARN_ON(wdev->conn))
+ if (wdev->conn)
return -EINPROGRESS;
wdev->conn = kzalloc(sizeof(*wdev->conn), GFP_KERNEL);