Re: [PATCH] net: sched: fix warning in tcindex_alloc_perfect_hash

On Fri, Jun 25, 2021 at 1:23 PM Pavel Skripkin [off-list ref] wrote:

Syzbot reported warning in tcindex_alloc_perfect_hash. The problem
was in too big cp->hash, which triggers warning in kmalloc. Since
cp->hash comes from userspace, there is no need to warn if value
is not correct

Fixes: b9a24bb76bf6 ("net_sched: properly handle failure case of tcf_exts_init()")
Reported-and-tested-by: syzbot+1071ad60cd7df39fdadb@syzkaller.appspotmail.com
Signed-off-by: Pavel Skripkin <redacted>

Looks reasonable.

Acked-by: Cong Wang <redacted>

Thanks.