diff options
Diffstat (limited to 'package/kernel/mac80211/patches/subsys/328-mac80211-do-not-wake-queues-on-a-vif-that-is-being-s.patch')
| -rw-r--r-- | package/kernel/mac80211/patches/subsys/328-mac80211-do-not-wake-queues-on-a-vif-that-is-being-s.patch | 38 |
1 files changed, 0 insertions, 38 deletions
diff --git a/package/kernel/mac80211/patches/subsys/328-mac80211-do-not-wake-queues-on-a-vif-that-is-being-s.patch b/package/kernel/mac80211/patches/subsys/328-mac80211-do-not-wake-queues-on-a-vif-that-is-being-s.patch deleted file mode 100644 index f0150ddef0..0000000000 --- a/package/kernel/mac80211/patches/subsys/328-mac80211-do-not-wake-queues-on-a-vif-that-is-being-s.patch +++ /dev/null @@ -1,38 +0,0 @@ -From: Felix Fietkau <nbd@nbd.name> -Date: Sat, 26 Mar 2022 23:58:35 +0100 -Subject: [PATCH] mac80211: do not wake queues on a vif that is being stopped - -When a vif is being removed and sdata->bss is cleared, __ieee80211_wake_txqs -can still be called on it, which crashes as soon as sdata->bss is being -dereferenced. -To fix this properly, check for SDATA_STATE_RUNNING before waking queues, -and take the fq lock when setting it (to ensure that __ieee80211_wake_txqs -observes the change when running on a different CPU - -Signed-off-by: Felix Fietkau <nbd@nbd.name> ---- - ---- a/net/mac80211/iface.c -+++ b/net/mac80211/iface.c -@@ -377,7 +377,9 @@ static void ieee80211_do_stop(struct iee - bool cancel_scan; - struct cfg80211_nan_func *func; - -+ spin_lock_bh(&local->fq.lock); - clear_bit(SDATA_STATE_RUNNING, &sdata->state); -+ spin_unlock_bh(&local->fq.lock); - - cancel_scan = rcu_access_pointer(local->scan_sdata) == sdata; - if (cancel_scan) ---- a/net/mac80211/util.c -+++ b/net/mac80211/util.c -@@ -301,6 +301,9 @@ static void __ieee80211_wake_txqs(struct - local_bh_disable(); - spin_lock(&fq->lock); - -+ if (!test_bit(SDATA_STATE_RUNNING, &sdata->state)) -+ goto out; -+ - if (sdata->vif.type == NL80211_IFTYPE_AP) - ps = &sdata->bss->ps; - |