Warnings before patch:
files: ['include/linux/bpf.h', 'kernel/bpf/cgroup.c', 'kernel/bpf/verifier.c', 'net/core/filter.c', 'net/sched/bpf_qdisc.c', 'tools/testing/selftests/bpf/test_kmods/bpf_testmod.c']
Warning: kernel/bpf/cgroup.c:506 No description found for return value of 'cgroup_bpf_inherit'
Warning: kernel/bpf/cgroup.c:789 No description found for return value of '__cgroup_bpf_attach'
Warning: kernel/bpf/cgroup.c:978 No description found for return value of '__cgroup_bpf_replace'
Warning: kernel/bpf/cgroup.c:1137 No description found for return value of '__cgroup_bpf_detach'
Warning: kernel/bpf/cgroup.c:1563 No description found for return value of '__cgroup_bpf_run_filter_skb'
Warning: kernel/bpf/cgroup.c:1640 No description found for return value of '__cgroup_bpf_run_filter_sk'
Warning: kernel/bpf/cgroup.c:1672 No description found for return value of '__cgroup_bpf_run_filter_sock_addr'
Warning: kernel/bpf/cgroup.c:1727 No description found for return value of '__cgroup_bpf_run_filter_sock_ops'
Warning: kernel/bpf/cgroup.c:1896 No description found for return value of '__cgroup_bpf_run_filter_sysctl'
Warning: net/core/filter.c:135 No description found for return value of 'sk_filter_trim_cap'
Warning: net/core/filter.c:587 No description found for return value of 'bpf_convert_filter'
Warning: net/core/filter.c:1082 No description found for return value of 'bpf_check_classic'
Warning: net/core/filter.c:1387 No description found for return value of 'bpf_prog_create'
Warning: net/core/filter.c:1433 No description found for return value of 'bpf_prog_create_from_user'
Warning: net/core/filter.c:1554 No description found for return value of 'sk_attach_filter'
Warning: net/core/filter.c:12114 No description found for return value of 'bpf_skb_meta_pointer'
Warning: kernel/bpf/cgroup.c:506 No description found for return value of 'cgroup_bpf_inherit'
Warning: kernel/bpf/cgroup.c:789 No description found for return value of '__cgroup_bpf_attach'
Warning: kernel/bpf/cgroup.c:978 No description found for return value of '__cgroup_bpf_replace'
Warning: kernel/bpf/cgroup.c:1137 No description found for return value of '__cgroup_bpf_detach'
Warning: kernel/bpf/cgroup.c:1563 No description found for return value of '__cgroup_bpf_run_filter_skb'
Warning: kernel/bpf/cgroup.c:1640 No description found for return value of '__cgroup_bpf_run_filter_sk'
Warning: kernel/bpf/cgroup.c:1672 No description found for return value of '__cgroup_bpf_run_filter_sock_addr'
Warning: kernel/bpf/cgroup.c:1727 No description found for return value of '__cgroup_bpf_run_filter_sock_ops'
Warning: kernel/bpf/cgroup.c:1896 No description found for return value of '__cgroup_bpf_run_filter_sysctl'
Warning: net/core/filter.c:135 No description found for return value of 'sk_filter_trim_cap'
Warning: net/core/filter.c:587 No description found for return value of 'bpf_convert_filter'
Warning: net/core/filter.c:1082 No description found for return value of 'bpf_check_classic'
Warning: net/core/filter.c:1387 No description found for return value of 'bpf_prog_create'
Warning: net/core/filter.c:1433 No description found for return value of 'bpf_prog_create_from_user'
Warning: net/core/filter.c:1554 No description found for return value of 'sk_attach_filter'
Warning: net/core/filter.c:12114 No description found for return value of 'bpf_skb_meta_pointer'

Current warnings:
files: ['include/linux/bpf.h', 'kernel/bpf/cgroup.c', 'kernel/bpf/verifier.c', 'net/core/filter.c', 'net/sched/bpf_qdisc.c', 'tools/testing/selftests/bpf/test_kmods/bpf_testmod.c']
Warning: kernel/bpf/cgroup.c:506 No description found for return value of 'cgroup_bpf_inherit'
Warning: kernel/bpf/cgroup.c:789 No description found for return value of '__cgroup_bpf_attach'
Warning: kernel/bpf/cgroup.c:978 No description found for return value of '__cgroup_bpf_replace'
Warning: kernel/bpf/cgroup.c:1137 No description found for return value of '__cgroup_bpf_detach'
Warning: kernel/bpf/cgroup.c:1563 No description found for return value of '__cgroup_bpf_run_filter_skb'
Warning: kernel/bpf/cgroup.c:1640 No description found for return value of '__cgroup_bpf_run_filter_sk'
Warning: kernel/bpf/cgroup.c:1672 No description found for return value of '__cgroup_bpf_run_filter_sock_addr'
Warning: kernel/bpf/cgroup.c:1727 No description found for return value of '__cgroup_bpf_run_filter_sock_ops'
Warning: kernel/bpf/cgroup.c:1896 No description found for return value of '__cgroup_bpf_run_filter_sysctl'
Warning: net/core/filter.c:135 No description found for return value of 'sk_filter_trim_cap'
Warning: net/core/filter.c:587 No description found for return value of 'bpf_convert_filter'
Warning: net/core/filter.c:1082 No description found for return value of 'bpf_check_classic'
Warning: net/core/filter.c:1387 No description found for return value of 'bpf_prog_create'
Warning: net/core/filter.c:1433 No description found for return value of 'bpf_prog_create_from_user'
Warning: net/core/filter.c:1554 No description found for return value of 'sk_attach_filter'
Warning: net/core/filter.c:12115 No description found for return value of 'bpf_skb_meta_pointer'
Warning: kernel/bpf/cgroup.c:506 No description found for return value of 'cgroup_bpf_inherit'
Warning: kernel/bpf/cgroup.c:789 No description found for return value of '__cgroup_bpf_attach'
Warning: kernel/bpf/cgroup.c:978 No description found for return value of '__cgroup_bpf_replace'
Warning: kernel/bpf/cgroup.c:1137 No description found for return value of '__cgroup_bpf_detach'
Warning: kernel/bpf/cgroup.c:1563 No description found for return value of '__cgroup_bpf_run_filter_skb'
Warning: kernel/bpf/cgroup.c:1640 No description found for return value of '__cgroup_bpf_run_filter_sk'
Warning: kernel/bpf/cgroup.c:1672 No description found for return value of '__cgroup_bpf_run_filter_sock_addr'
Warning: kernel/bpf/cgroup.c:1727 No description found for return value of '__cgroup_bpf_run_filter_sock_ops'
Warning: kernel/bpf/cgroup.c:1896 No description found for return value of '__cgroup_bpf_run_filter_sysctl'
Warning: net/core/filter.c:135 No description found for return value of 'sk_filter_trim_cap'
Warning: net/core/filter.c:587 No description found for return value of 'bpf_convert_filter'
Warning: net/core/filter.c:1082 No description found for return value of 'bpf_check_classic'
Warning: net/core/filter.c:1387 No description found for return value of 'bpf_prog_create'
Warning: net/core/filter.c:1433 No description found for return value of 'bpf_prog_create_from_user'
Warning: net/core/filter.c:1554 No description found for return value of 'sk_attach_filter'
Warning: net/core/filter.c:12115 No description found for return value of 'bpf_skb_meta_pointer'

Warnings before: 32 after: 32