| commit | 352d20d611414715353ee65fc206ee57ab1a6984 | [log] [tgz] |
|---|---|---|
| author | Peng Sun <sironhide0null@gmail.com> | Wed Feb 27 22:36:25 2019 +0800 |
| committer | Daniel Borkmann <daniel@iogearbox.net> | Fri Mar 01 16:04:29 2019 +0100 |
| tree | c856f1153a8c8551c974aa908088bdd1fe6499ac | |
| parent | 781e62823cb81b972dc8652c1827205cda2ac9ac [diff] |
bpf: drop refcount if bpf_map_new_fd() fails in map_create()
In bpf/syscall.c, map_create() first set map->usercnt to 1, a file
descriptor is supposed to return to userspace. When bpf_map_new_fd()
fails, drop the refcount.
Fixes: bd5f5f4ecb78 ("bpf: Add BPF_MAP_GET_FD_BY_ID")
Signed-off-by: Peng Sun <sironhide0null@gmail.com>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>