brain-hackers_pepepper-mirror/linux-brain
1
0
Fork 0
mirror of https://github.com/brain-hackers/linux-brain.git synced 2024-06-09 23:36:23 +09:00
Code Issues Projects Releases Wiki Activity

cfg80211: remove WARN_ON() in cfg80211_sme_connect

Browse Source 
commit 1b5ab825d9acc0f27d2f25c6252f3526832a9626 upstream.

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Du Cheng 2021-04-08 00:27:56 +08:00 committed by Greg Kroah-Hartman
parent 628ac886df
commit ed13df88c6
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
net/wireless/sme.c
View File

@ -530,7 +530,7 @@ static int cfg80211_sme_connect(struct wireless_dev *wdev,
cfg80211_sme_free(wdev); cfg80211_sme_free(wdev);
} }
if (WARN_ON(wdev->conn)) if (wdev->conn)
return -EINPROGRESS; return -EINPROGRESS;
wdev->conn = kzalloc(sizeof(*wdev->conn), GFP_KERNEL); wdev->conn = kzalloc(sizeof(*wdev->conn), GFP_KERNEL);