Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\bpf\verifier.c Create Date:2022-07-28 12:56:41
Last Modify:2022-05-19 20:02:10 Copyright©Brick
home page Tree
Annotation kernel can get tool activityDownload SCCTChinese

Name:mark_reg_not_init

Proto:static void mark_reg_not_init(struct bpf_verifier_env *env, struct bpf_reg_state *regs, u32 regno)

Type:void

Parameter:

TypeParameterName
struct bpf_verifier_env *env
struct bpf_reg_state *regs
u32regno
1097  If WARN_ON(regno >= BPF has 10 general purpose 64-bit registers and stack frame. ) Then
1098  verbose(env, "mark_reg_not_init(regs, %u)\n", regno)
1100  When regno < BPF_REG_FP cycle __mark_reg_not_init(env, regs + regno)
1102  Return
1104  __mark_reg_not_init(env, regs + regno)
Caller
NameDescribe
init_reg_state
check_func_call
check_helper_call
check_ld_absverify safety of LD_ABS|LD_IND instructions:* - they can only appear in the programs where ctx == skb* - since they are wrappers of function calls, they scratch R1-R5 registers,* preserve R6-R9, and store return value into R0* Implicit input:* ctx == skb