Lee Jones ed403bcd97 bpf: Ensure correct locking around vulnerable function find_vpid() ... [ Upstream commit 83c10cc362 ] The documentation for find_vpid() clearly states: "Must be called with the tasklist_lock or rcu_read_lock() held." Presently we do neither for find_vpid() instance in bpf_task_fd_query(). Add proper rcu_read_lock/unlock() to fix the issue. Fixes: 41bdc4b40e ("bpf: introduce bpf subcommand BPF_TASK_FD_QUERY") Signed-off-by: Lee Jones <lee@kernel.org> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Yonghong Song <yhs@fb.com> Link: https://lore.kernel.org/bpf/20220912133855.1218900-1-lee@kernel.org Signed-off-by: Sasha Levin <sashal@kernel.org>		2022-10-26 13:25:21 +02:00
..
preload
arraymap.c	bpf: Acquire map uref in .init_seq_private for array map iterator	2022-08-25 11:37:55 +02:00
bpf_inode_storage.c
bpf_iter.c
bpf_local_storage.c
bpf_lru_list.c
bpf_lru_list.h
bpf_lsm.c
bpf_struct_ops_types.h
bpf_struct_ops.c
btf.c	bpf: btf: fix truncated last_member_type_id in btf_struct_resolve	2022-10-26 13:25:20 +02:00
cgroup.c	bpf, cgroup: Fix kernel BUG in purge_effective_progs	2022-09-08 11:11:36 +02:00
core.c	bpf: Make sure mac_header was set before using it	2022-07-29 17:19:23 +02:00
cpumap.c
devmap.c
disasm.c
disasm.h
dispatcher.c
hashtab.c	bpf: Acquire map uref in .init_seq_private for hash map iterator	2022-08-25 11:37:55 +02:00
helpers.c
inode.c
local_storage.c
lpm_trie.c
Makefile
map_in_map.c
map_in_map.h
map_iter.c
net_namespace.c
offload.c
percpu_freelist.c
percpu_freelist.h
prog_iter.c
queue_stack_maps.c
reuseport_array.c
ringbuf.c
stackmap.c	bpf: Fix incorrect memory charge cost calculation in stack_map_alloc()	2022-06-22 14:13:12 +02:00
syscall.c	bpf: Ensure correct locking around vulnerable function find_vpid()	2022-10-26 13:25:21 +02:00
sysfs_btf.c
task_iter.c
tnum.c
trampoline.c
verifier.c	bpf: Don't use tnum_range on array range checking for poke descriptors	2022-08-31 17:15:24 +02:00