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In a "dual kernel" layout, kdump uses kexec to boot another kernel and obtain a memory dump. [3]: 10 In the event of a kernel crash, kdump preserves system consistency by booting another Linux kernel, which is known as the dump-capture kernel, and using it to export and save a memory dump.
kdump (Linux) – Linux kernel's crash dump mechanism, which internally uses kexec System.map – contains mappings between symbol names and their addresses in memory, used to interpret oopses References
When a bug check is issued, a crash dump file will be created if the system is configured to create them. [2] This file contains a "snapshot" of useful low-level information about the system that can be used to debug the root cause of the problem and possibly other things in the background.
Analysts of crash dumps from Linux systems can use kdump or the Linux Kernel Crash Dump (LKCD). [10] Core dumps can save the context (state) of a process at a given state for returning to it later. Systems can be made highly available by transferring core between processors, sometimes via core dump files themselves.
During the final stages of kernel userspace initialization, a panic is typically triggered if the spawning of init fails. A panic might also be triggered if the init process terminates, as the system would then be unusable. [11] The following is an implementation of the Linux kernel final initialization in kernel_init(): [12]
rasdaemon [8] is a RAS (reliability, availability and serviceability) logging tool for Linux. It records memory errors, using the EDAC tracing events. EDAC is a Linux kernel subsystem that handles detection of ECC errors from memory controllers for most chipsets on i386 and x86_64 architectures. EDAC drivers for other architectures like arm ...
With the introduction of Windows 2000, Microsoft allowed the use of an NMI to cause a system to either break into a debugger, or dump the contents of memory to disk and reboot. [ 3 ] Debugging NMIs have also been used by devices that allow leisure users and gamers to manipulate running programs.
ProcDump is a command-line application used for monitoring an application for CPU spikes and creating crash dumps during a spike. [2] [3] The crash dumps can then be used by an administrator or software developer to determine the cause of the spike.