From: Johannes Berg <johannes@sipsolutions.net>
To: linux-wireless@vger.kernel.org, netdev@vger.kernel.org
Cc: Johannes Berg <johannes.berg@intel.com>
Subject: [PATCH net] mac80211: fix locking in ieee80211_restart_work()
Date: Tue, 17 Aug 2021 12:12:22 +0200 [thread overview]
Message-ID: <20210817121210.47bdb177064f.Ib1ef79440cd27f318c028ddfc0c642406917f512@changeid> (raw)
From: Johannes Berg <johannes.berg@intel.com>
Ilan's change to move locking around accidentally lost the
wiphy_lock() during some porting, add it back.
Fixes: 45daaa131841 ("mac80211: Properly WARN on HW scan before restart")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---
Can you please apply this directly to net? I don't have any
other patches, so not much sense in sending a pull request.
---
net/mac80211/main.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/net/mac80211/main.c b/net/mac80211/main.c
index 05f4c3c72619..fcae76ddd586 100644
--- a/net/mac80211/main.c
+++ b/net/mac80211/main.c
@@ -260,6 +260,8 @@ static void ieee80211_restart_work(struct work_struct *work)
flush_work(&local->radar_detected_work);
rtnl_lock();
+ /* we might do interface manipulations, so need both */
+ wiphy_lock(local->hw.wiphy);
WARN(test_bit(SCAN_HW_SCANNING, &local->scanning),
"%s called with hardware scan in progress\n", __func__);
--
2.31.1
next reply other threads:[~2021-08-17 10:12 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-17 10:12 Johannes Berg [this message]
2021-08-17 14:00 ` [PATCH net] mac80211: fix locking in ieee80211_restart_work() patchwork-bot+netdevbpf
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20210817121210.47bdb177064f.Ib1ef79440cd27f318c028ddfc0c642406917f512@changeid \
--to=johannes@sipsolutions.net \
--cc=johannes.berg@intel.com \
--cc=linux-wireless@vger.kernel.org \
--cc=netdev@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.