lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Wed, 15 Jan 2020 13:55:12 +0000 From: Jérôme Pouiller <Jerome.Pouiller@...abs.com> To: "devel@...verdev.osuosl.org" <devel@...verdev.osuosl.org>, "linux-wireless@...r.kernel.org" <linux-wireless@...r.kernel.org> CC: "netdev@...r.kernel.org" <netdev@...r.kernel.org>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, Greg Kroah-Hartman <gregkh@...uxfoundation.org>, Kalle Valo <kvalo@...eaurora.org>, "David S . Miller" <davem@...emloft.net>, Jérôme Pouiller <Jerome.Pouiller@...abs.com> Subject: [PATCH v2 48/65] staging: wfx: fix RCU usage From: Jérôme Pouiller <jerome.pouiller@...abs.com> Indeed, sta was used after call to rcu_unlock() Signed-off-by: Jérôme Pouiller <jerome.pouiller@...abs.com> --- drivers/staging/wfx/sta.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/staging/wfx/sta.c b/drivers/staging/wfx/sta.c index 1c10ebd11944..cc72877a090f 100644 --- a/drivers/staging/wfx/sta.c +++ b/drivers/staging/wfx/sta.c @@ -690,10 +690,9 @@ static void wfx_join_finalize(struct wfx_vif *wvif, struct ieee80211_sta *sta = NULL; wvif->beacon_int = info->beacon_int; - rcu_read_lock(); + rcu_read_lock(); // protect sta if (info->bssid && !info->ibss_joined) sta = ieee80211_find_sta(wvif->vif, info->bssid); - rcu_read_unlock(); if (sta) wvif->bss_params.operational_rate_set = wfx_rate_mask_to_hw(wvif->wdev, sta->supp_rates[wvif->channel->band]); @@ -712,6 +711,7 @@ static void wfx_join_finalize(struct wfx_vif *wvif, wvif->bss_params.aid = info->aid; hif_set_association_mode(wvif, info, sta ? &sta->ht_cap : NULL); + rcu_read_unlock(); if (!info->ibss_joined) { hif_keep_alive_period(wvif, 30 /* sec */); -- 2.25.0
Powered by blists - more mailing lists