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cfg80211: check for set_wiphy_params

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commit 24953de0a5e31dcca7e82c8a3c79abc2dfe8fb6e upstream.

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 <johannes.berg@intel.com>
Link: https://lore.kernel.org/r/20200113125358.ac07f276efff.Ibd85ee1b12e47b9efb00a2adc5cd3fac50da791a@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Johannes Berg 2020-01-13 12:53:59 +01:00 committed by Greg Kroah-Hartman
parent b196a0ce26
commit d0c85e0ac9
1 changed files with 4 additions and 0 deletions
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4
net/wireless/rdev-ops.h
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@ -517,6 +517,10 @@ 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);