diff options
| author | Pavel Skripkin <paskripkin@gmail.com> | 2021-06-25 23:23:48 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-06-28 13:03:29 -0700 |
| commit | 3f2db250099f46988088800052cdf2332c7aba61 (patch) | |
| tree | b775cc1ed9b56b0744fa9e4b0cce447a9a4ed628 /net/sched | |
| parent | fade56410c22cacafb1be9f911a0afd3701d8366 (diff) | |
net: sched: fix warning in tcindex_alloc_perfect_hash
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 <paskripkin@gmail.com>
Acked-by: Cong Wang <cong.wang@bytedance.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sched')
| -rw-r--r-- | net/sched/cls_tcindex.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/sched/cls_tcindex.c b/net/sched/cls_tcindex.c index c4007b9cd16d..5b274534264c 100644 --- a/net/sched/cls_tcindex.c +++ b/net/sched/cls_tcindex.c @@ -304,7 +304,7 @@ static int tcindex_alloc_perfect_hash(struct net *net, struct tcindex_data *cp) int i, err = 0; cp->perfect = kcalloc(cp->hash, sizeof(struct tcindex_filter_result), - GFP_KERNEL); + GFP_KERNEL | __GFP_NOWARN); if (!cp->perfect) return -ENOMEM; |