diff options
| author | Miri Korenblit <miriam.rachel.korenblit@intel.com> | 2025-02-05 11:39:26 +0200 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2025-02-11 11:59:08 +0100 |
| commit | 6c93fd502023dd919b5987ccbe990735410edd49 (patch) | |
| tree | c08cb6f5b4c8bb9aa34285f8b5d8e52e59aa64db | |
| parent | a883ad479dbbbab80543678389582fa90d2b9339 (diff) | |
wifi: mac80211: ensure sdata->work is canceled before initialized.
This wiphy work is canceled when the iface is stopped,
and shouldn't be queued for a non-running iface.
If it happens to be queued for a non-running iface (due to a bug)
it can cause a corruption of wiphy_work_list when ieee80211_setup_sdata
is called. Make sure to cancel it in this case and warn on.
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Link: https://patch.msgid.link/20250205110958.99204c767c10.I84ce27a239059f6009cee197b252549a11426046@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
| -rw-r--r-- | net/mac80211/iface.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c index edb4ca333528..d8b14ba95ae2 100644 --- a/net/mac80211/iface.c +++ b/net/mac80211/iface.c @@ -8,7 +8,7 @@ * Copyright 2008, Johannes Berg <johannes@sipsolutions.net> * Copyright 2013-2014 Intel Mobile Communications GmbH * Copyright (c) 2016 Intel Deutschland GmbH - * Copyright (C) 2018-2024 Intel Corporation + * Copyright (C) 2018-2025 Intel Corporation */ #include <linux/slab.h> #include <linux/kernel.h> @@ -804,6 +804,9 @@ static void ieee80211_set_multicast_list(struct net_device *dev) */ static void ieee80211_teardown_sdata(struct ieee80211_sub_if_data *sdata) { + if (WARN_ON(!list_empty(&sdata->work.entry))) + wiphy_work_cancel(sdata->local->hw.wiphy, &sdata->work); + /* free extra data */ ieee80211_free_keys(sdata, false); |