understand kernel panic - mehome/openthos GitHub Wiki

对于linux睡眠及崩溃相关bug的调试方法

kernel 配置打开： PM_DEBUG CRASH_DUMP （打印的崩溃信息还没能保存下来）

kernel启动参数增加： ignore_loglevel 忽略log等级打印所有kernel log no_console_suspend 在睡眠和休眠时不会挂起console initcall_debug 在启动、挂起、恢复时跟踪记录PM会调用的驱动

panic=N N秒后重启
panic=0 不重启
panic=-N 立即重启

Enabling in Kernel Config

To enable the dump_stack() function in the kernel config the following options must be set. You can use make menuconfig or make xconfig to do this.

• Kernel hacking -> Kernel debugging
• Kernel hacking -> Verbose kernel error messages

Enabling these two options will change the dump_stack() function from a do nothing function to dumping the stack.

You need to rebuild your Linux kernel image after enabling these options.

Referance: https://01.org/zh/blogs/rzhang/2015/best-practice-debug-linux-suspend/hibernate-issues