kernel/bpf/verifier.c

2375 		regs[i].subreg_def = DEF_NOT_SUBREG;
3234 	s32 def_idx = reg->subreg_def;
3241 	reg->subreg_def = DEF_NOT_SUBREG;
3282 		reg->subreg_def = rw64 ? DEF_NOT_SUBREG : env->insn_idx + 1;
4816 				 * subreg_def for this insn.  Save it first.
4818 				s32 subreg_def = state->regs[dst_regno].subreg_def;
4821 				state->regs[dst_regno].subreg_def = subreg_def;
6869 				regs[value_regno].subreg_def = DEF_NOT_SUBREG;
9578 		caller->regs[BPF_REG_0].subreg_def = DEF_NOT_SUBREG;
10488 	regs[BPF_REG_0].subreg_def = DEF_NOT_SUBREG;
10698 		reg->subreg_def = reg_size == sizeof(u64) ?
14069 						dst_reg->subreg_def = env->insn_idx + 1;
14078 					dst_reg->subreg_def = DEF_NOT_SUBREG;
14097 						dst_reg->subreg_def = DEF_NOT_SUBREG;
14123 						dst_reg->subreg_def = env->insn_idx + 1;
14134 						dst_reg->subreg_def = env->insn_idx + 1;
15369 	regs[BPF_REG_0].subreg_def = env->insn_idx + 1;