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inet_diag: bc: read cgroup id only for full sockets 

Fix bug introduced by commit b1f3e43dbf ("inet_diag: add support for
cgroup filter").

Signed-off-by: Dmitry Yakunin <zeil@yandex-team.ru>
Reported-by: syzbot+ee80f840d9bf6893223b@syzkaller.appspotmail.com
Reported-by: syzbot+13bef047dbfffa5cd1af@syzkaller.appspotmail.com
Fixes: b1f3e43dbf ("inet_diag: add support for cgroup filter")
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Dmitry Yakunin 2020-05-02 18:34:42 +03:00 committed by David S. Miller
parent f166f890c8
commit ee1bd483cc
1 changed files with 2 additions and 1 deletions
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3
net/ipv4/inet_diag.c
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@ -746,7 +746,8 @@ int inet_diag_bc_sk(const struct nlattr *bc, struct sock *sk)
else
entry.mark = 0;
#ifdef CONFIG_SOCK_CGROUP_DATA
entry.cgroup_id = cgroup_id(sock_cgroup_ptr(&sk->sk_cgrp_data));
entry.cgroup_id = sk_fullsock(sk) ?
cgroup_id(sock_cgroup_ptr(&sk->sk_cgrp_data)) : 0;
#endif
return inet_diag_bc_run(bc, &entry);