From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Madhuparna Bhowmik <madhuparnabhowmik10@gmail.com>,
Johannes Berg <johannes.berg@intel.com>,
Sasha Levin <sashal@kernel.org>,
linux-wireless@vger.kernel.org, netdev@vger.kernel.org
Subject: [PATCH AUTOSEL 5.4 50/57] mac80211: sta_info: Add lockdep condition for RCU list usage
Date: Thu, 30 Apr 2020 09:52:11 -0400 [thread overview]
Message-ID: <20200430135218.20372-50-sashal@kernel.org> (raw)
In-Reply-To: <20200430135218.20372-1-sashal@kernel.org>
From: Madhuparna Bhowmik <madhuparnabhowmik10@gmail.com>
[ Upstream commit 8ca47eb9f9e4e10e7e7fa695731a88941732c38d ]
The function sta_info_get_by_idx() uses RCU list primitive.
It is called with local->sta_mtx held from mac80211/cfg.c.
Add lockdep expression to avoid any false positive RCU list warnings.
Signed-off-by: Madhuparna Bhowmik <madhuparnabhowmik10@gmail.com>
Link: https://lore.kernel.org/r/20200409082906.27427-1-madhuparnabhowmik10@gmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/mac80211/sta_info.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c
index 21b1422b1b1c3..b1669f0244706 100644
--- a/net/mac80211/sta_info.c
+++ b/net/mac80211/sta_info.c
@@ -217,7 +217,8 @@ struct sta_info *sta_info_get_by_idx(struct ieee80211_sub_if_data *sdata,
struct sta_info *sta;
int i = 0;
- list_for_each_entry_rcu(sta, &local->sta_list, list) {
+ list_for_each_entry_rcu(sta, &local->sta_list, list,
+ lockdep_is_held(&local->sta_mtx)) {
if (sdata != sta->sdata)
continue;
if (i < idx) {
--
2.20.1
next prev parent reply other threads:[~2020-04-30 14:04 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20200430135218.20372-1-sashal@kernel.org>
2020-04-30 13:51 ` [PATCH AUTOSEL 5.4 22/57] svcrdma: Fix trace point use-after-free race Sasha Levin
2020-04-30 13:51 ` [PATCH AUTOSEL 5.4 26/57] wimax/i2400m: Fix potential urb refcnt leak Sasha Levin
2020-04-30 13:51 ` [PATCH AUTOSEL 5.4 27/57] net: stmmac: fix enabling socfpga's ptp_ref_clock Sasha Levin
2020-04-30 13:51 ` [PATCH AUTOSEL 5.4 28/57] net: stmmac: Fix sub-second increment Sasha Levin
2020-04-30 13:51 ` [PATCH AUTOSEL 5.4 29/57] netfilter: nat: fix error handling upon registering inet hook Sasha Levin
2020-04-30 13:51 ` [PATCH AUTOSEL 5.4 34/57] net/mlx5: Fix failing fw tracer allocation on s390 Sasha Levin
2020-04-30 13:51 ` [PATCH AUTOSEL 5.4 35/57] net/mlx5e: Don't trigger IRQ multiple times on XSK wakeup to avoid WQ overruns Sasha Levin
2020-04-30 13:51 ` [PATCH AUTOSEL 5.4 36/57] net/mlx5e: Get the latest values from counters in switchdev mode Sasha Levin
2020-04-30 13:51 ` [PATCH AUTOSEL 5.4 37/57] cpumap: Avoid warning when CONFIG_DEBUG_PER_CPU_MAPS is enabled Sasha Levin
2020-04-30 13:51 ` [PATCH AUTOSEL 5.4 38/57] bpf: Forbid XADD on spilled pointers for unprivileged users Sasha Levin
2020-04-30 13:52 ` Sasha Levin [this message]
2020-04-30 13:52 ` [PATCH AUTOSEL 5.4 53/57] net: bcmgenet: suppress warnings on failed Rx SKB allocations Sasha Levin
2020-04-30 13:52 ` [PATCH AUTOSEL 5.4 54/57] net: systemport: " Sasha Levin
2020-04-30 13:52 ` [PATCH AUTOSEL 5.4 55/57] bpf, x86_32: Fix incorrect encoding in BPF_LDX zero-extension Sasha Levin
2020-04-30 13:52 ` [PATCH AUTOSEL 5.4 56/57] bpf, x86_32: Fix clobbering of dst for BPF_JSET Sasha Levin
2020-04-30 13:52 ` [PATCH AUTOSEL 5.4 57/57] bpf, x86_32: Fix logic error in BPF_LDX zero-extension Sasha Levin
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