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| author | Martin KaFai Lau <kafai@fb.com> | 2020-01-13 23:26:47 -0800 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2020-01-14 09:54:31 -0800 |
| commit | 3b4130418f62b0e7a4685cc2c03bb41c6cb8922d (patch) | |
| tree | e21b8e78a62af42310fbf7d9e0c92061df9ccf97 /kernel/irq/cpuhotplug.c | |
| parent | 6dd42aa17fdd59f383998c6c3e0ecc89414f4a04 (diff) | |
| download | linux-3b4130418f62b0e7a4685cc2c03bb41c6cb8922d.tar.bz2 | |
bpf: Fix seq_show for BPF_MAP_TYPE_STRUCT_OPS
Instead of using bpf_struct_ops_map_lookup_elem() which is
not implemented, bpf_struct_ops_map_seq_show_elem() should
also use bpf_struct_ops_map_sys_lookup_elem() which does
an inplace update to the value. The change allocates
a value to pass to bpf_struct_ops_map_sys_lookup_elem().
[root@arch-fb-vm1 bpf]# cat /sys/fs/bpf/dctcp
{{{1}},BPF_STRUCT_OPS_STATE_INUSE,{{00000000df93eebc,00000000df93eebc},0,2, ...
Fixes: 85d33df357b6 ("bpf: Introduce BPF_MAP_TYPE_STRUCT_OPS")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20200114072647.3188298-1-kafai@fb.com
Diffstat (limited to 'kernel/irq/cpuhotplug.c')
0 files changed, 0 insertions, 0 deletions