I0713 10:29:47.710357 1 bcc_attacher.go:146] trying to load eBPF module with kernel source dir /usr/share/kepler/kernel_sources/4.18.0-477.13.1.el8_8.x86_64 bpf: Failed to load program: Invalid argument I0713 10:29:48.571949 1 bcc_attacher.go:150] failed to attach perf module with ...
基本上，cgroup_skb/ingress程序要求返回值是0 (drop)或1 (pass)，我使用的是为tc程序的返回值定义的...
1.1.1、bpf内存空间分配 static int bpf_prog_load(union bpf_attr *attr){enum bpf_prog_type type = attr->prog_type;struct bpf_prog *prog;int err;char license[128];bool is_gpl;if (CHECK_ATTR(BPF_PROG_LOAD))return -EINVAL;/* copy eBPF programlicense from user space *//* (1.1) 根据...
static int bpf_prog_load(union bpf_attr *attr) { enum bpf_prog_type type = attr->prog_type; struct bpf_prog *prog; int err; char license[128]; bool is_gpl; if (CHECK_ATTR(BPF_PROG_LOAD)) return -EINVAL; /* copy eBPF program license from user space */ /* (1.1) 根据attr->l...
Load(数据读取) 读取程序参数 读取指定的16位内存地址 Store(数据存储) 保存数据到指定的16位内存地址中 支持的运算 + - * / & | ^ >> << ! 返回值 SECCOMP_RET_ALLOW - 允许继续使用系统调用 SECCOMP_RET_KILL - 终止系统调用 SECCOMP_RET_ERRNO - 返回设置的errno值 SECCOMP_RET_TRACE - 通...
if (CHECK_ATTR(BPF_PROG_LOAD))return -EINVAL; /* copy eBPF program license from user space *//* (1.1) 根据attr->license地址,从用户空间拷贝license字符串到内核 */if (strncpy_from_user(license, u64_to_ptr(attr->license),sizeof(license) - 1) < 0)return -EFAULT;license[sizeof(license...
/* Probe may succeed even if program load fails, for unprivileged users * check that we did not fail because of insufficient permissions */ if(run_as_unprivileged&&errno==EPERM) res=false; #endif supported_types[prog_type]|=res; maxlen...
cannot attach kprobe, Invalid argument Failed to attach BPF program b'trace_count_3' to kprobe b'_copy_to_user' This is kind of mysterious. If you check the output from dmesg you would see something like: [686890.989521] trace_kprobe: Could not probe notrace function ...
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if (CHECK_ATTR(BPF_PROG_LOAD))return -EINVAL; /* copy eBPF program license from user space *//* (1.1) 根据attr->license地址,从用户空间拷贝license字符串到内核 */if (strncpy_from_user(license, u64_to_ptr(attr->license),sizeof(license) - 1) < 0)return -EFAULT;license[sizeof(license...