Warnings before patch:
files: ['net/core/filter.c', 'include/linux/filter.h', 'kernel/bpf/helpers.c']
<parse fail>: Warning: kernel/bpf/helpers.c:2464 No description found for return value of 'bpf_task_acquire'
<parse fail>: Warning: kernel/bpf/helpers.c:2493 No description found for return value of 'bpf_cgroup_acquire'
<parse fail>: Warning: kernel/bpf/helpers.c:2523 No description found for return value of 'bpf_cgroup_ancestor'
<parse fail>: Warning: kernel/bpf/helpers.c:2543 No description found for return value of 'bpf_cgroup_from_id'
<parse fail>: Warning: kernel/bpf/helpers.c:2564 No description found for return value of 'bpf_task_under_cgroup'
<parse fail>: Warning: kernel/bpf/helpers.c:2607 No description found for return value of 'bpf_task_get_cgroup1'
<parse fail>: Warning: kernel/bpf/helpers.c:2623 No description found for return value of 'bpf_task_from_pid'
<parse fail>: Warning: kernel/bpf/helpers.c:2642 No description found for return value of 'bpf_task_from_vpid'
<parse fail>: Warning: kernel/bpf/helpers.c:2877 No description found for return value of 'bpf_dynptr_copy'
<parse fail>: Warning: kernel/bpf/helpers.c:2931 No description found for return value of 'bpf_dynptr_memset'
<parse fail>: Warning: kernel/bpf/helpers.c:3145 No description found for return value of 'bpf_iter_bits_new'
<parse fail>: Warning: kernel/bpf/helpers.c:3206 No description found for return value of 'bpf_iter_bits_next'
<parse fail>: Warning: kernel/bpf/helpers.c:3256 No description found for return value of 'bpf_copy_from_user_str'
<parse fail>: Warning: net/core/filter.c:135 No description found for return value of 'sk_filter_trim_cap'
<parse fail>: Warning: net/core/filter.c:587 No description found for return value of 'bpf_convert_filter'
<parse fail>: Warning: net/core/filter.c:1082 No description found for return value of 'bpf_check_classic'
<parse fail>: Warning: net/core/filter.c:1387 No description found for return value of 'bpf_prog_create'
<parse fail>: Warning: net/core/filter.c:1433 No description found for return value of 'bpf_prog_create_from_user'
<parse fail>: Warning: net/core/filter.c:1554 No description found for return value of 'sk_attach_filter'
<parse fail>: Warning: net/core/filter.c:12020 No description found for return value of 'bpf_skb_meta_pointer'
Warning: kernel/bpf/helpers.c:2464 No description found for return value of 'bpf_task_acquire'
Warning: kernel/bpf/helpers.c:2493 No description found for return value of 'bpf_cgroup_acquire'
Warning: kernel/bpf/helpers.c:2523 No description found for return value of 'bpf_cgroup_ancestor'
Warning: kernel/bpf/helpers.c:2543 No description found for return value of 'bpf_cgroup_from_id'
Warning: kernel/bpf/helpers.c:2564 No description found for return value of 'bpf_task_under_cgroup'
Warning: kernel/bpf/helpers.c:2607 No description found for return value of 'bpf_task_get_cgroup1'
Warning: kernel/bpf/helpers.c:2623 No description found for return value of 'bpf_task_from_pid'
Warning: kernel/bpf/helpers.c:2642 No description found for return value of 'bpf_task_from_vpid'
Warning: kernel/bpf/helpers.c:2877 No description found for return value of 'bpf_dynptr_copy'
Warning: kernel/bpf/helpers.c:2931 No description found for return value of 'bpf_dynptr_memset'
Warning: kernel/bpf/helpers.c:3145 No description found for return value of 'bpf_iter_bits_new'
Warning: kernel/bpf/helpers.c:3206 No description found for return value of 'bpf_iter_bits_next'
Warning: kernel/bpf/helpers.c:3256 No description found for return value of 'bpf_copy_from_user_str'
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:12020 No description found for return value of 'bpf_skb_meta_pointer'

Current warnings:
files: ['net/core/filter.c', 'include/linux/filter.h', 'kernel/bpf/helpers.c']
<parse fail>: Warning: kernel/bpf/helpers.c:2462 No description found for return value of 'bpf_task_acquire'
<parse fail>: Warning: kernel/bpf/helpers.c:2491 No description found for return value of 'bpf_cgroup_acquire'
<parse fail>: Warning: kernel/bpf/helpers.c:2521 No description found for return value of 'bpf_cgroup_ancestor'
<parse fail>: Warning: kernel/bpf/helpers.c:2541 No description found for return value of 'bpf_cgroup_from_id'
<parse fail>: Warning: kernel/bpf/helpers.c:2562 No description found for return value of 'bpf_task_under_cgroup'
<parse fail>: Warning: kernel/bpf/helpers.c:2605 No description found for return value of 'bpf_task_get_cgroup1'
<parse fail>: Warning: kernel/bpf/helpers.c:2621 No description found for return value of 'bpf_task_from_pid'
<parse fail>: Warning: kernel/bpf/helpers.c:2640 No description found for return value of 'bpf_task_from_vpid'
<parse fail>: Warning: kernel/bpf/helpers.c:2875 No description found for return value of 'bpf_dynptr_copy'
<parse fail>: Warning: kernel/bpf/helpers.c:2929 No description found for return value of 'bpf_dynptr_memset'
<parse fail>: Warning: kernel/bpf/helpers.c:3143 No description found for return value of 'bpf_iter_bits_new'
<parse fail>: Warning: kernel/bpf/helpers.c:3204 No description found for return value of 'bpf_iter_bits_next'
<parse fail>: Warning: kernel/bpf/helpers.c:3254 No description found for return value of 'bpf_copy_from_user_str'
<parse fail>: Warning: net/core/filter.c:135 No description found for return value of 'sk_filter_trim_cap'
<parse fail>: Warning: net/core/filter.c:587 No description found for return value of 'bpf_convert_filter'
<parse fail>: Warning: net/core/filter.c:1082 No description found for return value of 'bpf_check_classic'
<parse fail>: Warning: net/core/filter.c:1387 No description found for return value of 'bpf_prog_create'
<parse fail>: Warning: net/core/filter.c:1433 No description found for return value of 'bpf_prog_create_from_user'
<parse fail>: Warning: net/core/filter.c:1554 No description found for return value of 'sk_attach_filter'
<parse fail>: Warning: net/core/filter.c:12020 No description found for return value of 'bpf_skb_meta_pointer'
Warning: kernel/bpf/helpers.c:2462 No description found for return value of 'bpf_task_acquire'
Warning: kernel/bpf/helpers.c:2491 No description found for return value of 'bpf_cgroup_acquire'
Warning: kernel/bpf/helpers.c:2521 No description found for return value of 'bpf_cgroup_ancestor'
Warning: kernel/bpf/helpers.c:2541 No description found for return value of 'bpf_cgroup_from_id'
Warning: kernel/bpf/helpers.c:2562 No description found for return value of 'bpf_task_under_cgroup'
Warning: kernel/bpf/helpers.c:2605 No description found for return value of 'bpf_task_get_cgroup1'
Warning: kernel/bpf/helpers.c:2621 No description found for return value of 'bpf_task_from_pid'
Warning: kernel/bpf/helpers.c:2640 No description found for return value of 'bpf_task_from_vpid'
Warning: kernel/bpf/helpers.c:2875 No description found for return value of 'bpf_dynptr_copy'
Warning: kernel/bpf/helpers.c:2929 No description found for return value of 'bpf_dynptr_memset'
Warning: kernel/bpf/helpers.c:3143 No description found for return value of 'bpf_iter_bits_new'
Warning: kernel/bpf/helpers.c:3204 No description found for return value of 'bpf_iter_bits_next'
Warning: kernel/bpf/helpers.c:3254 No description found for return value of 'bpf_copy_from_user_str'
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:12020 No description found for return value of 'bpf_skb_meta_pointer'

Warnings before: 20 after: 20