我现在正面临着一个非常奇怪的问题。我正在构建一个库,并将其链接到我的程序。一切运行正常,没有分段错误(也用gdb检查过了),但当我用Valgrind运行程序时,它会疯狂地出现这样的语句:
==11972== Invalid read of size 8
==11972== at 0x509509C: setcontext (setcontext.S:73)
==11972== by 0x509764F: ??? (in /lib/x86_64-linux-gnu/libc-2.15.so)
==11972== Address 0x541f060 is 128 bytes insi
我为分段故障安装了自定义信号处理程序。
void sa_sigHandler(int signo, siginfo_t *info, void *context) {
...
void *variableAddr = info->si_addr;
ucontext_t *uctx = (ucontext_t *)context;
unsigned long inst = uctx->uc_mcontext.gregs[REG_RIP];
// how to get file, source line and object name here ?
..
我在Pi上安装zfsutils时遇到了一个错误,升级到debian。
sudo apt install zfsutils-linux
The following packages have unmet dependencies: zfsutils-linux : Depends: libnvpair3linux (= 2.0.3-9~bpo10+1) but 2.0.3-9 is to be installed
Depends: libuutil3linux (= 2.0.3-9~bpo10+1) but 2.0.3-9 is to be install
我能够在amd64架构上成功地为我的模块构建和部署映像。但是,对于yaml文件中使用arm64 : arm64v8的体系结构,构建失败。
它在警告中失败
---> [Warning] The requested image's platform (linux/arm64) does not match the detected host platform (linux/amd64) and no specific platform was requested
我假设构建发生在一个amd设备上,因此无法构建。有办法解决这个问题吗?
我有两个“解锁”设备,一个iPad迷你3和一个Galaxy 6,它们都被赋予一个终端和一组极简的unix命令。我以为这两种设备都有arm64处理器,但是当我运行
uname -a
在这两种设备上,我得到了以下信息:
对于iPad迷你3:
xxxxs-iPad:/var/mobile root# uname -a
Darwin xxxx-iPad 14.0.0 Darwin Kernel Version 14.0.0: Wed Jun 24 00:50:15 PDT 2015; root:xnu-2784.30.7-30/RELEASE_ARM64_S5L8960X iPad4, **arm64
在上发布了以下内容之后,我在这里尝试。
我在文档中解释了buildx命令(来自我的基于Intel的Mac):
# This normally works with build, without buildx
git clone https://github.com/Rothamsted/knetminer
cd knetminer
# buildx is the new thing I'm trying, to have multi-arch support
docker buildx build --platform linux/amd64,linux/arm64 -t knetmi
我注意到容器的Docker列表中有带有amd64的标签警告标签。我用buildx为linux/amd64、linux/arm64构建了图像,并将其推到了nexus。我用属性platform: "linux/arm64"更新了docker-compose.yml中的一个服务。不幸的是,我收到了错误:
Error response from daemon: image with reference nexus.xxx.xxx was found but does not match the specified platform: wanted linux/arm64, actual
我想我在我安装在jetson上的ubuntu18.04 (arm64)上安装了一个错误的arm64软件包,因为现在操作系统已经不起作用了,我不知道如何解决这个问题。
root@ziomario-desktop:~/Scaricati/arm64# dpkg -i libc6_2.24-11+deb9u4_arm64.deb
dpkg: attenzione: downgrade of libc6:arm64 from version 2.27-3ubuntu1.4 to 2.24-11+deb9u4
(reading from database... 323470 file e direct
int swapcontext(ucontext_t *oucp, ucontext_t *ucp);
int getcontext(ucontext_t *ucp);
int setcontext(const ucontext_t *ucp);
如果我的理解是正确的,那么swapcontext相当于先在oucp上调用getcontext,然后在ucp上调用setcontext。我正在尝试如何使用getcontext和setcontext实现swapcontext。
int swapcontext(ucontext_t *oucp, ucontext_t *ucp)
{
get
这里是继续的代码,当分段,我不明白"6字节“,为什么是6?
static void sigaction_segv(int signal, siginfo_t *si, void *arg) {
ucontext_t *ctx = (ucontext_t *) arg;
/* We are on linux x86, the returning IP is stored in RIP (64bit) or EIP (32bit).
In this example, the length of the offending instruction is 6 by
我一直在用NASM为Linux编写一个程序。我希望能够从我为SIGFPE建立的信号处理程序中返回到正常的代码路径。简化的示例代码是:
section .text
global _start
_start: ; --- Enter the program ---
mov ebx,8 ; Load the signal to handle (SIGFPE)
mov ecx,.handle ; Load the handler address
mov eax,48 ; Load the s
在我的编译器类中,我们正在编写Flex/Lex代码。当我编译.l文件并试图用gcc编译结果lex.yy.c文件时,我得到了以下错误:
Undefined symbols for architecture arm64:
"_yywrap", referenced from:
_yylex in lex-fb85c9.o
ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocatio
我正试图在我的ARM64 Ubuntu上为AMD64平台构建一个debian包。我执行命令
debuild -us -uc --host-arch arm64
但要得到警告
dpkg-architecture: warning: specified GNU system type aarch64-linux-gnu does not match CC system type x86_64-linux-gnu, try setting a correct CC environment variable
因此想知道如何设置CC环境变量,正如警告所建议的那样。对于我的目标操作系统,我通常会使用
/o