diff options
| author | Daniel Borkmann <daniel@iogearbox.net> | 2017-10-17 16:55:54 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-10-19 14:13:50 +0200 |
| commit | bc6d5031b43a2291de638ab9304320b4cae61689 (patch) | |
| tree | c67f4312dd0af8422b5400b0442583660535df12 /kernel/bpf/arraymap.c | |
| parent | bpf: fix splat for illegal devmap percpu allocation (diff) | |
| download | linux-bc6d5031b43a2291de638ab9304320b4cae61689.tar.xz linux-bc6d5031b43a2291de638ab9304320b4cae61689.zip | |
bpf: do not test for PCPU_MIN_UNIT_SIZE before percpu allocations
PCPU_MIN_UNIT_SIZE is an implementation detail of the percpu
allocator. Given we support __GFP_NOWARN now, lets just let
the allocation request fail naturally instead. The two call
sites from BPF mistakenly assumed __GFP_NOWARN would work, so
no changes needed to their actual __alloc_percpu_gfp() calls
which use the flag already.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'kernel/bpf/arraymap.c')
| -rw-r--r-- | kernel/bpf/arraymap.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/bpf/arraymap.c b/kernel/bpf/arraymap.c index 98c0f00c3f5e..e2636737b69b 100644 --- a/kernel/bpf/arraymap.c +++ b/kernel/bpf/arraymap.c @@ -98,7 +98,7 @@ static struct bpf_map *array_map_alloc(union bpf_attr *attr) array_size += (u64) attr->max_entries * elem_size * num_possible_cpus(); if (array_size >= U32_MAX - PAGE_SIZE || - elem_size > PCPU_MIN_UNIT_SIZE || bpf_array_alloc_percpu(array)) { + bpf_array_alloc_percpu(array)) { bpf_map_area_free(array); return ERR_PTR(-ENOMEM); } |