Peng Sun ebf233fd40 bpf: drop refcount if bpf_map_new_fd() fails in map_create() ...

[ Upstream commit 352d20d611 ]

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: bd5f5f4ecb ("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>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2019-12-05 15:38:00 +01:00

..

arraymap.c

…

bpf_lru_list.c

…

bpf_lru_list.h

…

cgroup.c

…

core.c

bpf: fix bpf_jit_limit knob for PAGE_SIZE >= 64K

2019-08-25 10:50:23 +02:00

devmap.c

bpf: devmap: fix wrong interface selection in notifier_call

2019-12-01 09:13:47 +01:00

hashtab.c

bpf, lru: avoid messing with eviction heuristics upon syscall lookup

2019-05-25 18:25:38 +02:00

helpers.c

…

inode.c

…

lpm_trie.c

…

Makefile

bpf: silence warning messages in core

2019-07-31 07:28:25 +02:00

map_in_map.c

bpf: fix inner map masking to prevent oob under speculation

2019-04-20 09:15:09 +02:00

map_in_map.h

…

percpu_freelist.c

…

percpu_freelist.h

…

sockmap.c

…

stackmap.c

…

syscall.c

bpf: drop refcount if bpf_map_new_fd() fails in map_create()

2019-12-05 15:38:00 +01:00

tnum.c

…

verifier.c

bpf: fix sanitation rewrite in case of non-pointers

2019-04-20 09:15:09 +02:00