| Message ID | 81f3eeda-0888-2869-659e-dc38c0a9debf@I-love.SAKURA.ne.jp (mailing list archive) |
|---|---|
| State | Awaiting Upstream |
| Delegated to: | Netdev Maintainers |
| Headers | show |
| Series | wifi: mac80211: initialize fq.lock as early as possible | expand |
diff --git a/net/mac80211/main.c b/net/mac80211/main.c index 5a385d4146b9..584e98300bbf 100644 --- a/net/mac80211/main.c +++ b/net/mac80211/main.c @@ -642,6 +642,7 @@ struct ieee80211_hw *ieee80211_alloc_hw_nm(size_t priv_data_len, wiphy->bss_priv_size = sizeof(struct ieee80211_bss); local = wiphy_priv(wiphy); + spin_lock_init(&local->fq.lock); if (sta_info_init(local)) goto err_free;
lockdep complains use of uninitialized spinlock at ieee80211_do_stop() [1], for commit f856373e2f31ffd3 ("wifi: mac80211: do not wake queues on a vif that is being stopped") guards clear_bit() using fq.lock even before fq_init() from ieee80211_txq_setup_flows() initializes this spinlock. Initialize this spinlock as early as possible. Link: https://syzkaller.appspot.com/bug?extid=eceab52db7c4b961e9d6 [1] Reported-by: syzbot <syzbot+eceab52db7c4b961e9d6@syzkaller.appspotmail.com> Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Fixes: f856373e2f31ffd3 ("wifi: mac80211: do not wake queues on a vif that is being stopped") Tested-by: syzbot <syzbot+eceab52db7c4b961e9d6@syzkaller.appspotmail.com> --- net/mac80211/main.c | 1 + 1 file changed, 1 insertion(+)