On Wed 2024-07-10 12:24:55, Greg KH wrote: > On Wed, Jul 10, 2024 at 12:04:15PM +0200, Pavel Machek wrote: > > Hi! > > > > > [ Upstream commit 6ef09cdc5ba0f93826c09d810c141a8d103a80fc ] > > > > > > In 'cfg80211_wext_siwscan()', add extra check whether number of > > > channels passed via 'ioctl(sock, SIOCSIWSCAN, ...)' doesn't exceed > > > IW_MAX_FREQUENCIES and reject invalid request with -EINVAL otherwise. > > > > This results in very confusing code in 4.19 at least. It should goto > > out for consistency, exploting kfree(NULL) to be nop. Ok, not sure we > > care... > > kfree(NULL) is always supposed to be a nop, we have relied on that for > decades, that's not an issue anywhere. Take a look at the code, especially after this patch is applied. BR, Pavel -- DENX Software Engineering GmbH, Managing Director: Erika Unter HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
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