[PATCH AUTOSEL 4.14 25/32] cfg80211: check for set_wiphy_params
From: Sasha Levin <sashal@kernel.org>
Date: 2020-01-24 14:25:30
Also in:
linux-wireless, lkml, stable
Subsystem:
802.11 (including cfg80211/nl80211), the rest · Maintainers:
Johannes Berg, Linus Torvalds
From: Johannes Berg <redacted> [ Upstream commit 24953de0a5e31dcca7e82c8a3c79abc2dfe8fb6e ] Check if set_wiphy_params is assigned and return an error if not, some drivers (e.g. virt_wifi where syzbot reported it) don't have it. Reported-by: syzbot+e8a797964a4180eb57d5@syzkaller.appspotmail.com Reported-by: syzbot+34b582cf32c1db008f8e@syzkaller.appspotmail.com Signed-off-by: Johannes Berg <redacted> Link: https://lore.kernel.org/r/20200113125358.ac07f276efff.Ibd85ee1b12e47b9efb00a2adc5cd3fac50da791a@changeid (local) Signed-off-by: Johannes Berg <redacted> Signed-off-by: Sasha Levin <sashal@kernel.org> --- net/wireless/rdev-ops.h | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/net/wireless/rdev-ops.h b/net/wireless/rdev-ops.h
index 96849357dd907..4077bb3af440c 100644
--- a/net/wireless/rdev-ops.h
+++ b/net/wireless/rdev-ops.h@@ -537,6 +537,10 @@ static inline int rdev_set_wiphy_params(struct cfg80211_registered_device *rdev, u32 changed) { int ret; + + if (!rdev->ops->set_wiphy_params) + return -EOPNOTSUPP; + trace_rdev_set_wiphy_params(&rdev->wiphy, changed); ret = rdev->ops->set_wiphy_params(&rdev->wiphy, changed); trace_rdev_return_int(&rdev->wiphy, ret);
--
2.20.1