| commit | 89b096898a8450b0a5b97d521e000ae9f94f81f9 | [log] [tgz] |
|---|---|---|
| author | Daniel Borkmann <daniel@iogearbox.net> | Thu Jul 27 21:02:46 2017 +0200 |
| committer | David S. Miller <davem@davemloft.net> | Sat Jul 29 14:28:54 2017 -0700 |
| tree | fab22c5fc592d584692e3b4f29634825d50a1f18 | |
| parent | c9f2c1ae123a751d4e4f949144500219354d5ee1 [diff] |
bpf: don't indicate success when copy_from_user fails
err in bpf_prog_get_info_by_fd() still holds 0 at that time from prior
check_uarg_tail_zero() check. Explicitly return -EFAULT instead, so
user space can be notified of buggy behavior.
Fixes: 1e2709769086 ("bpf: Add BPF_OBJ_GET_INFO_BY_FD")
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>