What is kernel panic

Kernel panic refers to the action taken by the operating system when it detects an internal fatal error and cannot safely handle the error. This concept is mainly restricted to Unix and Unix-like systems. For Microsoft Windows systems, the equivalent concept is often called a Blue Screen of Death.

Kernel panic refers to the action taken by the operating system when it detects an internal fatal error and cannot safely handle the error. This concept is mainly restricted to Unix and Unix-like systems. For Microsoft Windows systems, the equivalent concept is often called a Blue Screen of Death.

Kernel errors may occur when the operating system kernel attempts to read or write an invalid or not allowed memory address, or when it encounters a hardware error or operating system BUG. In some cases, the system can continue to operate when a memory access violation occurs, but in other cases, the system may hang (restart) completely, that is, a kernel panic occurs.

The subroutine in the operating system kernel that handles Kernel panic (in AT&T derived classes and BSD-like Unix, usually panic()) is usually designed to output error information to the console and save a copy to disk. Dump the kernel memory for later debugging, and then wait for the system to be restarted manually or automatically. The technical information provided by this program is usually used to help system administrators or software developers diagnose problems.

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