* [PATCH net-next] bpf: disallow bpf tc programs access current->pid,uid
@ 2015-06-16 3:49 Alexei Starovoitov
2015-06-16 3:51 ` David Miller
0 siblings, 1 reply; 2+ messages in thread
From: Alexei Starovoitov @ 2015-06-16 3:49 UTC (permalink / raw)
To: David S. Miller; +Cc: Daniel Borkmann, netdev
Accessing current->pid/uid from cls_bpf may lead to misleading results and
should not be used when TC classifiers need accurate information about pid/uid.
Signed-off-by: Alexei Starovoitov <ast@plumgrid.com>
---
net/core/filter.c | 6 ------
1 file changed, 6 deletions(-)
diff --git a/net/core/filter.c b/net/core/filter.c
index 65ff107d3d29..be3098fb65e4 100644
--- a/net/core/filter.c
+++ b/net/core/filter.c
@@ -1461,12 +1461,6 @@ tc_cls_act_func_proto(enum bpf_func_id func_id)
return &bpf_l4_csum_replace_proto;
case BPF_FUNC_clone_redirect:
return &bpf_clone_redirect_proto;
- case BPF_FUNC_get_current_pid_tgid:
- return &bpf_get_current_pid_tgid_proto;
- case BPF_FUNC_get_current_uid_gid:
- return &bpf_get_current_uid_gid_proto;
- case BPF_FUNC_get_current_comm:
- return &bpf_get_current_comm_proto;
default:
return sk_filter_func_proto(func_id);
}
--
1.7.9.5
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2015-06-16 3:49 [PATCH net-next] bpf: disallow bpf tc programs access current->pid,uid Alexei Starovoitov
2015-06-16 3:51 ` David Miller
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