Toke Høiland-Jørgensen 1fc9f6c1b5 cpumap: Avoid warning when CONFIG_DEBUG_PER_CPU_MAPS is enabled ... commit bc23d0e3f7 upstream. When the kernel is built with CONFIG_DEBUG_PER_CPU_MAPS, the cpumap code can trigger a spurious warning if CONFIG_CPUMASK_OFFSTACK is also set. This happens because in this configuration, NR_CPUS can be larger than nr_cpumask_bits, so the initial check in cpu_map_alloc() is not sufficient to guard against hitting the warning in cpumask_check(). Fix this by explicitly checking the supplied key against the nr_cpumask_bits variable before calling cpu_possible(). Fixes: 6710e11269 ("bpf: introduce new bpf cpu map type BPF_MAP_TYPE_CPUMAP") Reported-by: Xiumei Mu <xmu@redhat.com> Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Tested-by: Xiumei Mu <xmu@redhat.com> Acked-by: Jesper Dangaard Brouer <brouer@redhat.com> Acked-by: Song Liu <songliubraving@fb.com> Link: https://lore.kernel.org/bpf/20200416083120.453718-1-toke@redhat.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2020-05-02 17:25:53 +02:00
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arraymap.c
bpf_lru_list.c
bpf_lru_list.h
btf.c	bpf: Explicitly memset some bpf info structures declared on the stack	2020-04-02 15:28:23 +02:00
cgroup.c
core.c	bpf: fix bpf_jit_limit knob for PAGE_SIZE >= 64K	2019-07-10 09:53:47 +02:00
cpumap.c	cpumap: Avoid warning when CONFIG_DEBUG_PER_CPU_MAPS is enabled	2020-05-02 17:25:53 +02:00
devmap.c	bpf: devmap: fix wrong interface selection in notifier_call	2019-12-01 09:17:01 +01:00
disasm.c
disasm.h
hashtab.c	bpf, lru: avoid messing with eviction heuristics upon syscall lookup	2019-05-25 18:23:48 +02:00
helpers.c
inode.c	bpf: map_seq_next should always increase position index	2020-02-24 08:34:51 +01:00
local_storage.c
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
offload.c	bpf, offload: Replace bitwise AND by logical AND in bpf_prog_offload_info_fill	2020-02-28 16:38:59 +01:00
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
sockmap.c
stackmap.c	bpf/stackmap: Fix deadlock with rq_lock in bpf_get_stack()	2019-12-31 16:35:20 +01:00
syscall.c	bpf: Explicitly memset some bpf info structures declared on the stack	2020-04-02 15:28:23 +02:00
tnum.c	bpf: Fix incorrect verifier simulation of ARSH under ALU32	2020-01-23 08:21:32 +01:00
verifier.c	bpf: fix buggy r0 retval refinement for tracing helpers	2020-04-23 10:30:24 +02:00
xskmap.c