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(parent: 781e628) | patch
bpf: drop refcount if bpf_map_new_fd() fails in map_create()
authorPeng Sun <sironhide0null@gmail.com>
Wed, 27 Feb 2019 14:36:25 +0000 (22:36 +0800)
committerDaniel Borkmann <daniel@iogearbox.net>
Fri, 1 Mar 2019 15:04:29 +0000 (16:04 +0100)
commit352d20d611414715353ee65fc206ee57ab1a6984
treec856f1153a8c8551c974aa908088bdd1fe6499actree | snapshot
parent781e62823cb81b972dc8652c1827205cda2ac9accommit | 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>
kernel/bpf/syscall.c diff | blob | history
ep93xx device tree rework repo: git://git.maquefel.me/linux.git