website-function

Function: register_is_null

Status

Regular

• In 4.4: Absent ⚠️
• In 4.8: Absent ⚠️
• In 4.10: Absent ⚠️
• In 4.13: Absent ⚠️
• In 4.15: Full Inline ⚠️

  Collision: Unique Static

  Inline: Full

  Transformation: False

  Instances:

  In kernel/bpf/verifier.c (ffffffff811a3811)
  Location: kernel/bpf/verifier.c:1295
  Inline: True
  Inline callers:
    - kernel/bpf/verifier.c:check_func_arg
    - kernel/bpf/verifier.c:check_stack_boundary
  

• In 4.18: Full Inline ⚠️

  Collision: Unique Static

  Inline: Full

  Transformation: False

  Instances:

  In kernel/bpf/verifier.c (ffffffff811bab10)
  Location: kernel/bpf/verifier.c:1004
  Inline: True
  Inline callers:
    - kernel/bpf/verifier.c:check_func_arg
    - kernel/bpf/verifier.c:check_helper_mem_access
    - kernel/bpf/verifier.c:check_mem_access
  

• In 5.0: Full Inline ⚠️

  Collision: Unique Static

  Inline: Full

  Transformation: False

  Instances:

  In kernel/bpf/verifier.c (ffffffff811cae9b)
  Location: kernel/bpf/verifier.c:1211
  Inline: True
  Inline callers:
    - kernel/bpf/verifier.c:check_helper_call
    - kernel/bpf/verifier.c:check_func_arg
    - kernel/bpf/verifier.c:check_helper_mem_access
    - kernel/bpf/verifier.c:check_mem_access
  

• In 5.3: Full Inline ⚠️

  Collision: Unique Static

  Inline: Full

  Transformation: False

  Instances:

  In kernel/bpf/verifier.c (ffffffff811e24f4)
  Location: kernel/bpf/verifier.c:1859
  Inline: True
  Inline callers:
    - kernel/bpf/verifier.c:check_helper_call
    - kernel/bpf/verifier.c:check_func_arg
    - kernel/bpf/verifier.c:check_func_arg
    - kernel/bpf/verifier.c:check_func_arg
    - kernel/bpf/verifier.c:check_helper_mem_access
    - kernel/bpf/verifier.c:check_mem_access
    - kernel/bpf/verifier.c:check_mem_access
  

• In 5.4: Full Inline ⚠️

  Collision: Unique Static

  Inline: Full

  Transformation: False

  Instances:

  In kernel/bpf/verifier.c (ffffffff811eed2c)
  Location: kernel/bpf/verifier.c:1860
  Inline: True
  Inline callers:
    - kernel/bpf/verifier.c:check_helper_call
    - kernel/bpf/verifier.c:check_func_arg
    - kernel/bpf/verifier.c:check_func_arg
    - kernel/bpf/verifier.c:check_func_arg
    - kernel/bpf/verifier.c:check_helper_mem_access
    - kernel/bpf/verifier.c:check_mem_access
    - kernel/bpf/verifier.c:check_mem_access
  

• In 5.8: Selective Inline ⚠️

  bool register_is_null(struct bpf_reg_state *reg);
  

  Collision: Unique Static

  Inline: Selective

  Transformation: False

  Instances:

  In kernel/bpf/verifier.c (ffffffff81211bf7)
  Location: kernel/bpf/verifier.c:2170
  Inline: True
  Inline callers:
    - kernel/bpf/verifier.c:check_helper_call
    - kernel/bpf/verifier.c:check_func_arg
    - kernel/bpf/verifier.c:check_func_arg
    - kernel/bpf/verifier.c:check_func_arg
    - kernel/bpf/verifier.c:check_func_arg
    - kernel/bpf/verifier.c:check_stack_boundary
    - kernel/bpf/verifier.c:check_stack_write
    - kernel/bpf/verifier.c:check_stack_write
  Direct callers:
    - kernel/bpf/verifier.c:check_func_arg
  

  Symbols:

  ffffffff81201e00-ffffffff81201e1f: register_is_null (STB_LOCAL)
  

• In 5.11: Full Inline ⚠️

  Collision: Unique Static

  Inline: Full

  Transformation: False

  Instances:

  In kernel/bpf/verifier.c (ffffffff8121284b)
  Location: kernel/bpf/verifier.c:2229
  Inline: True
  Inline callers:
    - kernel/bpf/verifier.c:check_helper_call
    - kernel/bpf/verifier.c:check_func_arg
    - kernel/bpf/verifier.c:check_func_arg
    - kernel/bpf/verifier.c:check_helper_mem_access
    - kernel/bpf/verifier.c:check_stack_write
    - kernel/bpf/verifier.c:check_stack_write
  

• In 5.13: Full Inline ⚠️

  Collision: Unique Static

  Inline: Full

  Transformation: False

  Instances:

  In kernel/bpf/verifier.c (ffffffff81213c9c)
  Location: kernel/bpf/verifier.c:2534
  Inline: True
  Inline callers:
    - kernel/bpf/verifier.c:check_func_arg
    - kernel/bpf/verifier.c:check_func_arg
    - kernel/bpf/verifier.c:check_mem_reg
    - kernel/bpf/verifier.c:check_helper_mem_access
    - kernel/bpf/verifier.c:check_stack_write_var_off
    - kernel/bpf/verifier.c:check_stack_write_fixed_off
    - kernel/bpf/verifier.c:check_stack_write_fixed_off
  

• In 5.15: Full Inline ⚠️

  Collision: Unique Static

  Inline: Full

  Transformation: False

  Instances:

  In kernel/bpf/verifier.c (ffffffff8124af00)
  Location: kernel/bpf/verifier.c:2602
  Inline: True
  Inline callers:
    - kernel/bpf/verifier.c:check_helper_call
    - kernel/bpf/verifier.c:check_func_arg
    - kernel/bpf/verifier.c:check_func_arg
    - kernel/bpf/verifier.c:check_mem_reg
    - kernel/bpf/verifier.c:check_helper_mem_access
    - kernel/bpf/verifier.c:check_stack_write_var_off
    - kernel/bpf/verifier.c:check_stack_write_fixed_off
    - kernel/bpf/verifier.c:check_stack_write_fixed_off
  

• In 5.19: Full Inline ⚠️

  Collision: Unique Static

  Inline: Full

  Transformation: False

  Instances:

  In kernel/bpf/verifier.c (ffffffff812919ef)
  Location: kernel/bpf/verifier.c:2938
  Inline: True
  Inline callers:
    - kernel/bpf/verifier.c:check_helper_call
    - kernel/bpf/verifier.c:check_helper_call
    - kernel/bpf/verifier.c:check_func_arg
    - kernel/bpf/verifier.c:check_func_arg
    - kernel/bpf/verifier.c:check_func_arg
    - kernel/bpf/verifier.c:check_mem_reg
    - kernel/bpf/verifier.c:check_helper_mem_access
    - kernel/bpf/verifier.c:check_mem_access
    - kernel/bpf/verifier.c:check_stack_write_var_off
    - kernel/bpf/verifier.c:check_stack_write_fixed_off
    - kernel/bpf/verifier.c:check_stack_write_fixed_off
  

• In 6.2: Full Inline ⚠️

  Collision: Unique Static

  Inline: Full

  Transformation: False

  Instances:

  In kernel/bpf/verifier.c (ffffffff812ec15e)
  Location: kernel/bpf/verifier.c:3352
  Inline: True
  Inline callers:
    - kernel/bpf/verifier.c:check_helper_call
    - kernel/bpf/verifier.c:check_helper_call
    - kernel/bpf/verifier.c:check_helper_call
    - kernel/bpf/verifier.c:check_helper_call
    - kernel/bpf/verifier.c:check_func_arg
    - kernel/bpf/verifier.c:check_func_arg
    - kernel/bpf/verifier.c:check_func_arg
    - kernel/bpf/verifier.c:check_mem_reg
    - kernel/bpf/verifier.c:check_helper_mem_access
    - kernel/bpf/verifier.c:check_mem_access
    - kernel/bpf/verifier.c:check_stack_write_var_off
    - kernel/bpf/verifier.c:check_stack_write_fixed_off
    - kernel/bpf/verifier.c:check_stack_write_fixed_off
  

• In 6.5: Full Inline ⚠️

  Collision: Unique Static

  Inline: Full

  Transformation: False

  Instances:

  In kernel/bpf/verifier.c (ffffffff81315f24)
  Location: kernel/bpf/verifier.c:4215
  Inline: True
  Inline callers:
    - kernel/bpf/verifier.c:check_kfunc_args
    - kernel/bpf/verifier.c:check_kfunc_args
    - kernel/bpf/verifier.c:check_helper_call
    - kernel/bpf/verifier.c:check_helper_call
    - kernel/bpf/verifier.c:check_helper_call
    - kernel/bpf/verifier.c:check_helper_call
    - kernel/bpf/verifier.c:check_func_arg
    - kernel/bpf/verifier.c:check_func_arg
    - kernel/bpf/verifier.c:check_func_arg
    - kernel/bpf/verifier.c:check_mem_reg
    - kernel/bpf/verifier.c:check_helper_mem_access
    - kernel/bpf/verifier.c:check_stack_write_var_off
    - kernel/bpf/verifier.c:check_stack_write_fixed_off
    - kernel/bpf/verifier.c:check_stack_write_fixed_off
  

• In 6.8: Full Inline ⚠️

  Collision: Unique Static

  Inline: Full

  Transformation: False

  Instances:

  In kernel/bpf/verifier.c (ffffffff813370d2)
  Location: kernel/bpf/verifier.c:4365
  Inline: True
  Inline callers:
    - kernel/bpf/verifier.c:check_kfunc_args
    - kernel/bpf/verifier.c:check_kfunc_args
    - kernel/bpf/verifier.c:get_kfunc_ptr_arg_type
    - kernel/bpf/verifier.c:check_func_arg
    - kernel/bpf/verifier.c:check_func_arg
    - kernel/bpf/verifier.c:check_func_arg
    - kernel/bpf/verifier.c:check_mem_reg
    - kernel/bpf/verifier.c:check_helper_mem_access
    - kernel/bpf/verifier.c:check_stack_write_var_off
    - kernel/bpf/verifier.c:check_stack_write_fixed_off
  

Arch

• In arm64: Full Inline ⚠️

  Collision: Unique Static

  Inline: Full

  Transformation: False

  Instances:

  In kernel/bpf/verifier.c (ffff800010272638)
  Location: kernel/bpf/verifier.c:1860
  Inline: True
  Inline callers:
    - kernel/bpf/verifier.c:check_helper_call
    - kernel/bpf/verifier.c:check_func_arg
    - kernel/bpf/verifier.c:check_func_arg
    - kernel/bpf/verifier.c:check_func_arg
    - kernel/bpf/verifier.c:check_helper_mem_access
    - kernel/bpf/verifier.c:check_stack_write
    - kernel/bpf/verifier.c:check_stack_write
  

• In armhf: Full Inline ⚠️

  Collision: Unique Static

  Inline: Full

  Transformation: False

  Instances:

  In kernel/bpf/verifier.c (c04a4ed0)
  Location: kernel/bpf/verifier.c:1860
  Inline: True
  Inline callers:
    - kernel/bpf/verifier.c:check_helper_call
    - kernel/bpf/verifier.c:check_func_arg
    - kernel/bpf/verifier.c:check_func_arg
    - kernel/bpf/verifier.c:check_func_arg
    - kernel/bpf/verifier.c:check_helper_mem_access
    - kernel/bpf/verifier.c:check_stack_write
    - kernel/bpf/verifier.c:check_stack_write
  

• In ppc64el: Full Inline ⚠️

  Collision: Unique Static

  Inline: Full

  Transformation: False

  Instances:

  In kernel/bpf/verifier.c (c00000000031a0bc)
  Location: kernel/bpf/verifier.c:1860
  Inline: True
  Inline callers:
    - kernel/bpf/verifier.c:check_helper_call
    - kernel/bpf/verifier.c:check_func_arg
    - kernel/bpf/verifier.c:check_func_arg
    - kernel/bpf/verifier.c:check_func_arg
    - kernel/bpf/verifier.c:check_helper_mem_access
    - kernel/bpf/verifier.c:check_stack_write
    - kernel/bpf/verifier.c:check_stack_write
  

• In riscv64: Full Inline ⚠️

  Collision: Unique Static

  Inline: Full

  Transformation: False

  Instances:

  In kernel/bpf/verifier.c (ffffffe0001ab710)
  Location: kernel/bpf/verifier.c:1860
  Inline: True
  Inline callers:
    - kernel/bpf/verifier.c:check_helper_call
    - kernel/bpf/verifier.c:check_func_arg
    - kernel/bpf/verifier.c:check_func_arg
    - kernel/bpf/verifier.c:check_func_arg
    - kernel/bpf/verifier.c:check_helper_mem_access
    - kernel/bpf/verifier.c:check_stack_write
    - kernel/bpf/verifier.c:check_stack_write
  

Flavor

• In aws: Full Inline ⚠️

  Collision: Unique Static

  Inline: Full

  Transformation: False

  Instances:

  In kernel/bpf/verifier.c (ffffffff811e734c)
  Location: kernel/bpf/verifier.c:1860
  Inline: True
  Inline callers:
    - kernel/bpf/verifier.c:check_helper_call
    - kernel/bpf/verifier.c:check_func_arg
    - kernel/bpf/verifier.c:check_func_arg
    - kernel/bpf/verifier.c:check_func_arg
    - kernel/bpf/verifier.c:check_helper_mem_access
    - kernel/bpf/verifier.c:check_mem_access
    - kernel/bpf/verifier.c:check_mem_access
  

• In azure: Full Inline ⚠️

  Collision: Unique Static

  Inline: Full

  Transformation: False

  Instances:

  In kernel/bpf/verifier.c (ffffffff811da10c)
  Location: kernel/bpf/verifier.c:1860
  Inline: True
  Inline callers:
    - kernel/bpf/verifier.c:check_helper_call
    - kernel/bpf/verifier.c:check_func_arg
    - kernel/bpf/verifier.c:check_func_arg
    - kernel/bpf/verifier.c:check_func_arg
    - kernel/bpf/verifier.c:check_helper_mem_access
    - kernel/bpf/verifier.c:check_mem_access
    - kernel/bpf/verifier.c:check_mem_access
  

• In gcp: Full Inline ⚠️

  Collision: Unique Static

  Inline: Full

  Transformation: False

  Instances:

  In kernel/bpf/verifier.c (ffffffff811e511c)
  Location: kernel/bpf/verifier.c:1860
  Inline: True
  Inline callers:
    - kernel/bpf/verifier.c:check_helper_call
    - kernel/bpf/verifier.c:check_func_arg
    - kernel/bpf/verifier.c:check_func_arg
    - kernel/bpf/verifier.c:check_func_arg
    - kernel/bpf/verifier.c:check_helper_mem_access
    - kernel/bpf/verifier.c:check_mem_access
    - kernel/bpf/verifier.c:check_mem_access
  

• In lowlatency: Full Inline ⚠️

  Collision: Unique Static

  Inline: Full

  Transformation: False

  Instances:

  In kernel/bpf/verifier.c (ffffffff811f34ec)
  Location: kernel/bpf/verifier.c:1860
  Inline: True
  Inline callers:
    - kernel/bpf/verifier.c:check_helper_call
    - kernel/bpf/verifier.c:check_func_arg
    - kernel/bpf/verifier.c:check_func_arg
    - kernel/bpf/verifier.c:check_func_arg
    - kernel/bpf/verifier.c:check_helper_mem_access
    - kernel/bpf/verifier.c:check_mem_access
    - kernel/bpf/verifier.c:check_mem_access
  

Differences

Regular