Linux kernel panic解决方法

kernel panic错误表现kernel panic 主要有以下几个出错提示：
Kernel panic-not syncing fatal exception in interrupt
kernel panic - not syncing: Attempted to kill the idle task！
kernel panic - not syncing: killing interrupt handler！
Kernel Panic - not syncing：Attempted to kill init ！kernel错误分析查看了一下 linux的源码文件，找到相关位置
kernel/panic.c
NORET_TYPE void panic（const char * fmt, ...）
{
static char buf[1024];
va_list args;
bust_spinlocks（1）;
va_start（args, fmt）;
vsnprintf（buf, sizeof（buf）, fmt, args）;
va_end（args）;
printk（KERN_EMERG "Kernel panic - not syncing: %s/n",buf）;
bust_spinlocks（0）;

kernel/exit.c

if （unlikely（in_interrupt（）））
panic（"Aiee, killing interrupt handler！"）; #中断处理
if （unlikely（！tsk->pid））
panic（"Attempted to kill the idle task！"）; #空任务
if （unlikely（tsk->pid == 1））
panic（"Attempted to kill init！"）; #初始化

从其他源文件和相关文档看到应该有几种原因：

1、硬件问题
使用了 SCSI-device 并且使用了未知命令

#WDIOS_TEMPPANIC Kernel panic on temperature trip
#
# The SETOPTIONS call can be used to enable and disable the card
# and to ask the driver to call panic if the system overheats.
#
# If one uses a SCSI-device of unsupported type/commands, one
# immediately runs into a kernel-panic caused by Command Error. To better
# understand which SCSI-command caused the problem, I extended this
# specific panic-message slightly.
#
#read/write causes a command error from
# the subsystem and this causes kernel-panic

2、系统过热
如果系统过热会调用panci，系统挂起

#WDIOS_TEMPPANIC Kernel panic on temperature trip
#
# The SETOPTIONS call can be used to enable and disable the card
# and to ask the driver to call panic if the system overheats.

3、文件系统引起

#A variety of panics and hangs with /tmp on a reiserfs filesystem
#Any other panic, hang, or strange behavior
#
# It turns out that there"s a limit of six environment variables on the
# kernel command line. When that limit is reached or exceeded, argument
# processing stops, which means that the "root=" argument that UML
# usually adds is not seen. So, the filesystem has no idea what the
# root device is, so it panics.
# The fix is to put less stuff on the command line. Glomming all your
# setup variables into one is probably the best way to go.

Linux下默认方式安装OpenSSLLinux 遇到 kernel panic 后可自动重启相关资讯 Linux Kernel

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