Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000004、Linux4.19.66/at91/ramdisk/gcc7.3.1。_course

**环境描述：** 最近移植4.19.66内核，使用ramdisk文件系统，at91sam9x5，编译器使用的是gcc-linaro-7.3.1-2018.05-x86_64_arm-linux-gnueabi **问题如下：** 挂载文件系统报错 kernel panic - not syncing: Attempted to kill init exitcode=0x00000004  **尝试过的方法：** 网上所说的内核和busybox编译选择EABI选项，这个确认是选择了的，无法解决我的问题！ 同时搜索看到有的朋友说gcc编译器的lib库复制问题，请问gcc库复制有什么特别的地方，我是将lib目录下的内容全部删除、sudo rm -rf *，然后复制，sudo cp -rf * ./，最后使用strip缩小文件大小。

centos7安装yapi报错, 报错原因来自nodejs_course

(node:17561) UnhandledPromiseRejectionWarning: Error: Request failed with status code 502 at createError (/usr/local/app/nodejs/node/lib/node_modules/yapi-cli/node_modules/axios/lib/core/createError.js:16:15) at settle (/usr/local/app/nodejs/node/lib/node_modules/yapi-cli/node_modules/axios/lib/core/settle.js:18:12) at IncomingMessage.handleStreamEnd (/usr/local/app/nodejs/node/lib/node_modules/yapi-cli/node_modules/axios/lib/adapters/http.js:191:11) at emitNone (events.js:111:20) at IncomingMessage.emit (events.js:208:7) at endReadableNT (_stream_readable.js:1064:12) at _combinedTickCallback (internal/process/next_tick.js:139:11) at process._tickCallback (internal/process/next_tick.js:181:9) (node:17561) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 2)

Linux（centos-8.0）安装wine，yum安装和手动安装都报错，卡这了_course

# 1.yum安装wine ``` [root@10-7-185-27 wine]# sudo yum -y install wine CentOS-8.0 - AppStream 161 B/s | 162 B 00:01 CentOS-8.0 - Base 38 kB/s | 162 B 00:00 CentOS-8.0 - Extras 48 kB/s | 162 B 00:00 CentOS-8.0 - Plus 161 B/s | 162 B 00:01 Failed to synchronize cache for repo 'AppStream', ignoring this repo. Failed to synchronize cache for repo 'BaseOS', ignoring this repo. Failed to synchronize cache for repo 'extras', ignoring this repo. Failed to synchronize cache for repo 'centosplus', ignoring this repo. Last metadata expiration check: 0:09:27 ago on Mon 04 May 2020 10:43:43 PM HKT. Error: Problem: package wine-4.0.3-1.el7.x86_64 requires wine-twain(x86-64) = 4.0.3-1.el7, but none of the providers can be installed - conflicting requests - nothing provides sane-backends-libs(x86-64) needed by wine-twain-4.0.3-1.el7.x86_64 (try to add '--skip-broken' to skip uninstallable packages or '--nobest' to use not only best candidate packages) ``` # 手动下包，安装 解压完以后输入：./configure --enable-win64 ``` configure: WARNING: prelink not found, base address of core dlls won't be set correctly. configure: WARNING: libxrender development files not found, XRender won't be supported. configure: WARNING: No OpenGL library found on this system. OpenGL and Direct3D won't be supported. configure: WARNING: libxslt development files not found, xslt won't be supported. configure: WARNING: libgnutls development files not found, no schannel support. configure: WARNING: libjpeg development files not found, JPEG won't be supported. configure: WARNING: No sound system was found. Windows applications will be silent. configure: Finished. Do 'make' to compile Wine. ``` 这是最后面的几行 再输入wine -version表示没有wine 小白，求大神指教~谢谢~~

Kernel panic - not syncing: uncompression error_course

mips处理器产品上，使用initramfs文件系统类型启动，在cpio.gz文件目录下添加了几个lib库文件，其他未做改动，结果报出如下错误： __initramfs_start == 0x1f and == 0x8047f000 len == 3766048 Kernel panic - not syncing: uncompression error Call Trace: [<80026780>] dump_stack+0x8/0x34 [<80043e2c>] panic+0x68/0x16c [<80454b20>] populate_rootfs+0x50/0x23c [<8001a444>] do_one_initcall+0x6c/0x204 [<80452644>] kernel_init+0xcc/0x138 [<8002164c>] kernel_thread_helper+0x10/0x18 小弟第一次发帖，求各位高手们指点！

请教mount函数挂载nfs文件系统的问题_course

hi 各位同志们，你们有碰到过用mount 挂载nfs 文件系统的问题吗？ 我这边碰到个mount函数挂载nfs 文件系统问题一直mount不成功，但是 用system可以，我需要关系mount返回值，请教各位同事是否有懂的，请大家指导小弟： int nErCode = mount(192.168.0.101:/tmp/nfs, /tmp/nfs, "nfs", 0, "timeo=7,retry=1,retrans=1,intr,soft,tcp,eth=1,nolock"); 一直返回-1，提示参数不可用。找了很多资源都没有找到，如果您知道，期待您的答复。

编译openssh出现报错configure: error: OpenSSL library not found._course

checking if getpgrp accepts zero args... yes checking openssl/opensslv.h usability... yes checking openssl/opensslv.h presence... yes checking for openssl/opensslv.h... yes checking OpenSSL header version... 1010104f (OpenSSL 1.1.1d 10 Sep 2019) checking for OpenSSL_version... no checking for OpenSSL_version_num... no checking OpenSSL library version... not found configure: error: OpenSSL library not found. [root@localhost openssh-8.1p1]# 编译openssh时，出现这个问题，就在执行 ./configure弹出的 电脑里面有两个openssl [root@localhost openssh-8.1p1]# /usr/local/bin/openssl version OpenSSL 1.1.1d 10 Sep 2019 [root@localhost openssh-8.1p1]# /bin/openssl version OpenSSL 1.0.1e-fips 11 Feb 2013 [root@localhost openssh-8.1p1]# 上面是编译安装的，在/usr/local下面，一个是系统自带的在/usr下面。请问怎么将这个编译的openssh装上去，出现这个报错 怎么解决

自己用busybox做的文件系统，在启动时遇到的问题，请帮忙分析下..._course

U-Boot SPL 2014.04-rc3 (Oct 08 2014 - 22:34:35) reading args spl_load_image_fat_os: error reading image args, err - -1 reading u-boot.img reading u-boot.img U-Boot 2014.04-rc3 (Oct 08 2014 - 22:34:35) I2C: ready DRAM: 512 MiB NAND: 0 MiB MMC: OMAP SD/MMC: 0, OMAP SD/MMC: 1 *** Warning - readenv() failed, using default environment Net: <ethaddr> not set. Validating first E-fuse MAC cpsw, usb_ether Warning: Your board does not use generic board. Please read doc/README.generic-board and take action. Boards not upgraded by the late 2014 may break or be removed. Hit any key to stop autoboot: 0 gpio: pin 53 (gpio 53) value is 1 mmc0 is current device gpio: pin 54 (gpio 54) value is 1 SD/MMC found on device 0 reading uEnv.txt 1644 bytes read in 6 ms (267.6 KiB/s) gpio: pin 55 (gpio 55) value is 1 Loaded environment from uEnv.txt Importing environment from mmc ... Checking if uenvcmd is set ... gpio: pin 56 (gpio 56) value is 1 Running uenvcmd ... reading zImage 4379064 bytes read in 244 ms (17.1 MiB/s) 493466 bytes read in 39 ms (12.1 MiB/s) reading /am335x-boneblack.dtb 24968 bytes read in 10 ms (2.4 MiB/s) Kernel image @ 0x82000000 [ 0x000000 - 0x42d1b8 ] ## Flattened Device Tree blob at 88000000 Booting using the fdt blob at 0x88000000 Using Device Tree in place at 88000000, end 88009187 Starting kernel ... Uncompressing Linux... done, booting the kernel. [ 0.248220] omap2_mbox_probe: platform not supported [ 0.254754] tps65217-bl tps65217-bl: no platform data provided [ 0.319285] bone-capemgr bone_capemgr.9: slot #0: No cape found [ 0.356394] bone-capemgr bone_capemgr.9: slot #1: No cape found [ 0.393503] bone-capemgr bone_capemgr.9: slot #2: No cape found [ 0.430610] bone-capemgr bone_capemgr.9: slot #3: No cape found [ 0.446367] bone-capemgr bone_capemgr.9: slot #6: BB-BONELT-HDMIN conflict P8.45 (#5:BB-BONELT-HDMI) [ 0.456390] bone-capemgr bone_capemgr.9: slot #6: Failed verification [ 0.470328] omap_hsmmc mmc.5: of_parse_phandle_with_args of 'reset' failed [ 0.477961] bone-capemgr bone_capemgr.9: loader: failed to load slot-6 BB-BONELT-HDMIN:00A0 (prio 2) [ 0.542232] pinctrl-single 44e10800.pinmux: pin 44e10854 already requested by 44e10800.pinmux; cannot claim for gpio-leds.8 [ 0.554439] pinctrl-single 44e10800.pinmux: pin-21 (gpio-leds.8) status -22 [ 0.562056] pinctrl-single 44e10800.pinmux: could not request pin 21 on device pinctrl-single [ 1.035964] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0) [ 1.045162] [<c001023d>] (unwind_backtrace+0x1/0x88) from [<c037f759>] (panic+0x55/0x14c) [ 1.054205] [<c037f759>] (panic+0x55/0x14c) from [<c062e953>] (mount_block_root+0x12b/0x168) [ 1.063522] [<c062e953>] (mount_block_root+0x12b/0x168) from [<c062eabb>] (mount_root+0x87/0xa8) [ 1.073219] [<c062eabb>] (mount_root+0x87/0xa8) from [<c062f20d>] (initrd_load+0x115/0x1f0) [ 1.082431] [<c062f20d>] (initrd_load+0x115/0x1f0) from [<c062eb4b>] (prepare_namespace+0x6f/0x114) [ 1.092419] [<c062eb4b>] (prepare_namespace+0x6f/0x114) from [<c037c02b>] (kernel_init+0x7/0x90) [ 1.102116] [<c037c02b>] (kernel_init+0x7/0x90) from [<c000c3f9>] (ret_from_fork+0x11/0x38) [ 1.111331] drm_kms_helper: panic occurred, switching back to text console

linux 设备驱动开发&调试技术---!!!!!!!_course

大家好，我现在刚开始从事linux设备驱动开发。 在开发过程中，总是遇到system panic情况，而且在panic发生时，panic信息只出现一部分（屏幕滚过了），所以有些信息看不到。我在网上看了

专为程序员设计的数学课_course

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