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authorPavel Skripkin <paskripkin@gmail.com>2021-06-25 23:23:48 +0300
committerDavid S. Miller <davem@davemloft.net>2021-06-28 23:03:29 +0300
commit3f2db250099f46988088800052cdf2332c7aba61 (patch)
treeb775cc1ed9b56b0744fa9e4b0cce447a9a4ed628 /net
parentfade56410c22cacafb1be9f911a0afd3701d8366 (diff)
downloadlinux-3f2db250099f46988088800052cdf2332c7aba61.tar.xz
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')
-rw-r--r--net/sched/cls_tcindex.c2
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;