The crash built-in "bpf -m|-M" option displays bogus values of MEMLOCK and UID.

Issue

• The crash built-in "bpf -m|-M" option displays bogus values of MEMLOCK and UID.

crash> bpf
 ID      BPF_PROG       BPF_PROG_AUX   BPF_PROG_TYPE       TAG        USED_MAPS
 28  ffffae70c0127000 ffff96ba56cfbc00 CGROUP_DEVICE 40ddf486530245f5           
 29  ffffae70c0115000 ffff96ba56cfac00  CGROUP_SKB   6deef7357e7b4530           
 30  ffffae70c011d000 ffff96ba56cf8c00  CGROUP_SKB   6deef7357e7b4530           
 31  ffffae70c016d000 ffff96ba56cf9400 CGROUP_DEVICE ca8e50a3c7fb034b           
 32  ffffae70c015f000 ffff96ba56cfa000  CGROUP_SKB   6deef7357e7b4530           
 33  ffffae70c0161000 ffff96ba56cfb800  CGROUP_SKB   6deef7357e7b4530           
 34  ffffae70c0299000 ffff96ba023ddc00 CGROUP_DEVICE 3a0ef5414c2f6fca           
 35  ffffae70c028d000 ffff96ba023df400  CGROUP_SKB   6deef7357e7b4530           
 36  ffffae70c0285000 ffff96ba023df000  CGROUP_SKB   6deef7357e7b4530           
 37  ffffae70c0389000 ffff96ba56ce9c00 CGROUP_DEVICE ee0e253c78993a24           
 42  ffffae70c0047000 ffff96ba41804c00    KPROBE     2917f108481d7b94    2,1    

 ID      BPF_MAP          BPF_MAP_TYPE     MAP_FLAGS                     
 1   ffff96ba41804400        ARRAY          00000000  
 2   ffff96ba41804000         HASH          00000000   

crash> bpf -m 1                                          
 ID      BPF_MAP          BPF_MAP_TYPE     MAP_FLAGS       
 1   ffff96ba41804400        ARRAY          00000000                      
     KEY_SIZE: 4  VALUE_SIZE: 8  MAX_ENTRIES: 64  MEMLOCK: (unknown)    
     NAME: "dist"  UID: (unknown)                          ^^^^^^^^^                            
                        ^^^^^^^^^                                                                    

crash> bpf -m 2                                                         
 ID      BPF_MAP          BPF_MAP_TYPE     MAP_FLAGS  
 2   ffff96ba41804000         HASH          00000000 
     KEY_SIZE: 4  VALUE_SIZE: 8  MAX_ENTRIES: 4194304  MEMLOCK: (unknown)
     NAME: "start"  UID: (unknown)                              ^^^^^^^^^
                         ^^^^^^^^^
OR

crash> bpf -M
 ID      BPF_MAP          BPF_MAP_TYPE     MAP_FLAGS
 1   ffff96ba41804400        ARRAY          00000000 
     KEY_SIZE: 4  VALUE_SIZE: 8  MAX_ENTRIES: 64  MEMLOCK: (unknown)
     NAME: "dist"  UID: (unknown)                          ^^^^^^^^^
                        ^^^^^^^^^

 ID      BPF_MAP          BPF_MAP_TYPE     MAP_FLAGS
 2   ffff96ba41804000         HASH          00000000 
     KEY_SIZE: 4  VALUE_SIZE: 8  MAX_ENTRIES: 4194304  MEMLOCK: (unknown)
     NAME: "start"  UID: (unknown)                              ^^^^^^^^^ 
                         ^^^^^^^^^

• The bpftool command shows the correct value:

# bpftool prog show id 42
42: kprobe  name sched_switch  tag 2917f108481d7b94  gpl
        loaded_at 2022-01-11T17:34:15+0530  uid 0  <<---
        xlated 976B  jited 581B  memlock 4096B  map_ids 2,1
        btf_id 2
        pids cpudist(1377)

# bpftool map show id 1
1: array  name dist  flags 0x0
        key 4B  value 8B  max_entries 64  memlock 4096B
        btf_id 2                                  ^^^^^
        pids cpudist(1377)
# bpftool map show id 2
2: hash  name start  flags 0x0
        key 4B  value 8B  max_entries 4194304  memlock 67108864B
        btf_id 2                                       ^^^^^^^^^ 
        pids cpudist(1377)