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linux-stable/kernel/bpf
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Peng Sun 1a5df073d0 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 09:21:15 +01:00
..
arraymap.c bpf: decouple btf from seq bpf fs dump and enable more maps 2018-08-13 00:52:45 +02:00
bpf_lru_list.c bpf: lru: Lower the PERCPU_NR_SCANS from 16 to 4 2017-04-17 13:55:52 -04:00
bpf_lru_list.h bpf: Only set node->ref = 1 if it has not been set 2017-09-01 09:57:39 -07:00
btf.c bpf, btf: fix a missing check bug in btf_parse 2019-12-01 09:17:01 +01:00
cgroup.c bpf: introduce update_effective_progs() 2018-08-07 14:29:55 +02:00
core.c bpf: fix bpf_jit_limit knob for PAGE_SIZE >= 64K 2019-07-10 09:53:47 +02:00
cpumap.c bpf/cpumap: make sure frame_size for build_skb is aligned if headroom isn't 2019-12-05 09:20:46 +01:00
devmap.c bpf: devmap: fix wrong interface selection in notifier_call 2019-12-01 09:17:01 +01:00
disasm.c bpf: Remove struct bpf_verifier_env argument from print_bpf_insn 2018-03-23 17:38:57 +01:00
disasm.h bpf: Remove struct bpf_verifier_env argument from print_bpf_insn 2018-03-23 17:38:57 +01:00
hashtab.c bpf, lru: avoid messing with eviction heuristics upon syscall lookup 2019-05-25 18:23:48 +02:00
helpers.c bpf: introduce the bpf_get_local_storage() helper function 2018-08-03 00:47:32 +02:00
inode.c bpf: relax inode permission check for retrieving bpf program 2019-05-25 18:23:47 +02:00
local_storage.c bpf: allocate local storage buffers using GFP_ATOMIC 2018-12-17 09:24:33 +01:00
lpm_trie.c bpf: lpm_trie: check left child of last leftmost node for NULL 2019-07-03 13:14:48 +02:00
Makefile bpf: silence warning messages in core 2019-07-26 09:14:06 +02:00
map_in_map.c bpf: fix inner map masking to prevent oob under speculation 2019-01-31 08:14:41 +01:00
map_in_map.h bpf: Add syscall lookup support for fd array and htab 2017-06-29 13:13:25 -04:00
offload.c bpf: offload: allow program and map sharing per-ASIC 2018-07-18 15:10:34 +02:00
percpu_freelist.c bpf: fix lockdep false positive in percpu_freelist 2019-03-13 14:02:36 -07:00
percpu_freelist.h bpf: fix lockdep false positive in percpu_freelist 2019-03-13 14:02:36 -07:00
reuseport_array.c bpf: Introduce BPF_MAP_TYPE_REUSEPORT_SOCKARRAY 2018-08-11 01:58:46 +02:00
sockmap.c bpf: sockmap, fix transition through disconnect without close 2018-09-22 02:46:41 +02:00
stackmap.c bpf: fix lockdep false positive in stackmap 2019-03-23 20:09:48 +01:00
syscall.c bpf: drop refcount if bpf_map_new_fd() fails in map_create() 2019-12-05 09:21:15 +01:00
tnum.c bpf/verifier: improve register value range tracking with ARSH 2018-04-29 08:45:53 -07:00
verifier.c bpf: fix unconnected udp hooks 2019-07-03 13:14:48 +02:00
xskmap.c xsk: do not call synchronize_net() under RCU read lock 2018-10-11 10:19:01 +02:00