根文件系统制作 -- Kernel panic - not syncing

来源：互联网发布：名越seo 编辑：程序博客网时间：2024/06/05 10:06

目标环境： Embedded Linux

系统版本： linux-2.6.35.3

GUI版本： QtEmbedded-4.8.5-arm

问题描述：

UBIFS: mounted UBI device 0, volume 0, name "rootfs0"UBIFS: file system size:   106786816 bytes (104284 KiB, 101 MiB, 841 LEBs)UBIFS: journal size:       5332992 bytes (5208 KiB, 5 MiB, 42 LEBs)UBIFS: media format:       w4/r0 (latest is w4/r0)UBIFS: default compressor: lzoUBIFS: reserved for root:  4952683 bytes (4836 KiB)VFS: Mounted root (ubifs filesystem) on device 0:15.Freeing init memory: 160KKernel panic - not syncing: No init found.  Try passing init= option to kernel. See Linux Documentation/init.txt for guidance.Backtrace: [<c0034468>] (dump_backtrace+0x0/0x114) from [<c03cfea0>] (dump_stack+0x18/0x1c) r7:00000013 r6:c0050170 r5:c0028e84 r4:c053f338[<c03cfe88>] (dump_stack+0x0/0x1c) from [<c03cff1c>] (panic+0x78/0xf4)[<c03cfea4>] (panic+0x0/0xf4) from [<c00305ec>] (init_post+0xb4/0xdc) r3:00000000 r2:c752c300 r1:c752c400 r0:c0483252[<c0030538>] (init_post+0x0/0xdc) from [<c00084fc>] (kernel_init+0x12c/0x170) r5:c0028e84 r4:c053e460[<c00083d0>] (kernel_init+0x0/0x170) from [<c0050170>] (do_exit+0x0/0x6dc) r5:c00083d0 r4:00000000

分析：

对照自带根文件系统，无不合理的地方

#sudo tar // 提升权限重新打包根文件系统

结果：

重新下载固件，运行正常

UBIFS: mounted UBI device 0, volume 0, name "rootfs0"UBIFS: file system size:   106786816 bytes (104284 KiB, 101 MiB, 841 LEBs)UBIFS: journal size:       5332992 bytes (5208 KiB, 5 MiB, 42 LEBs)UBIFS: media format:       w4/r0 (latest is w4/r0)UBIFS: default compressor: lzoUBIFS: reserved for root:  4952683 bytes (4836 KiB)VFS: Mounted root (ubifs filesystem) on device 0:15.Freeing init memory: 160Kstarting pid 1140, tty '': '/etc/rc.d/rcS'Mounting /proc and /sys Starting the hotplug events dispatcher udevdSynthesizing initial hotplug eventsSetting the hostname to myzrMounting filesystemsGenerating keys for the ssh server: Starting the ssh server: Setting up networking on loopback device: Setuping the eth0: 192.168.3.104 eth0: Freescale FEC PHY driver [Gen

原因：

部分文件访问需要 root 权限，普通用户身份打包会遗漏部分文件，关键文件的缺少导致系统起不来。

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