eBPF是extended BPF的缩写，而BPF是Berkeley Packet Filter的缩写。对linux网络比较熟悉的伙伴对BPF应该比较了解，它通过特定的语法规则使用基于寄存器的虚拟机来描述包过滤的行为。比较常用的功能是通过过滤来统计流量，tcpdump工具就是基于BPF实现的。而eBPF对它进行了扩展来实现更多的功能。
But that kernel config hasCONFIG_BPF_SYSCALL=yset, where the linux/arm64 does not afbjorklundaddedarea/guest-vmarch/arm64labelsJul 29, 2022 FWIW, the same program flawlessly runs on minikube on a linux/amd64 platform. But that kernel config hasCONFIG_BPF_SYSCALL=yset, where the linux/arm...
容器安全是一个庞大且牵涉极广的话题，而容器的安全隔离往往是一套纵深防御的体系，牵扯到 AppArmor、Namespace、Capabilities、Cgroup、Seccomp 等多项内核技术和特性，但安全却是一处薄弱则全盘皆输的局面，一个新的内核特性可能就会让看似无懈可击的防线存在突破口。随着云原生技术的快速发展，越来越多的容器运行时...
# 需要导入模块: from bcc import BPF [as 别名]# 或者: from bcc.BPF importget_syscall_prefix[as 别名]classTestKprobeMaxactive(TestCase):defsetUp(self):self.b = BPF(text=b""" typedef struct { int idx; } Key; typedef struct { u64 val; } Val; BPF_HASH(stats, Key, Val, 3); int...
Fortunately, since linux 3.5, it is also possible to define advanced custom filters based on the BPF (Berkley Packet Filters). These filters may apply on any of the syscall argument but only on their value. In other words, a filter won’t be able to dereference a pointer. For example on...
nsjail:一个轻量级的进程隔离工具,利用Linux名称空间和seccomp-bpf syscall过滤器(借助kafel bpf语言)泪止**不住 上传96KB 文件格式 zip linux security chroot nsjail:一个轻量级的进程隔离工具,利用Linux名称空间和seccomp-bpf syscall过滤器(借助kafel bpf语言)...
This modification doesn't change behaviour of the syscall_tp But such code is often used as a reference so it should be correct anyway Signed-off-by: Denys Zagorui <dzagorui@cisco.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20231019113521....
+void test_uprobe_syscall(void) +{ + if (test__start_subtest("uretprobe_regs_equal")) + test_uretprobe_regs_equal(); +} diff --git a/tools/testing/selftests/bpf/progs/uprobe_syscall.c b/tools/testing/selftests/bpf/progs/uprobe_syscall.c ...
The performance test is part of bpf selftests: tools/testing/selftests/bpf/run_bench_uprobes.sh Note at the moment uretprobe syscall is supported only for native 64-bit process, compat process still uses standard breakpoint. Note that when shadow stack is enabled the uretprobe syscall returns...
Userspace eBPF runtime for fast Uprobe & Syscall hook & Plugins - bpftime/runtime/syscall-server/syscall_server_utils.cpp at fd12eb7da6f397b02d8f28369ff6a87ebca9d802 · lnicola/bpftime