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Kdump replaced the deprecated Linux Kernel Crash Dumps (LKCD) tool, which also wrote the contents of memory upon a crash. [11] Kdump presents a more efficient, scalable utility than LKCD. [12] kdump functionality, together with kexec, was merged into the Linux kernel mainline in kernel version 2.6.13, which was released on August 29, 2005. [13]
The kerneloops software can collect and submit kernel oopses to a repository such as the www.kerneloops.org website, [7] which provides statistics and public access to reported oopses. A simplified crash screen was introduced in Linux 6.10, similar to the Blue Screen of Death on Windows. [8]
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]
6.8.12 [7] 30 May 2024 [22] 6.7 8 January 2024 [1] 6.7.12 [7] 3 April 2024 Initial Bcachefs filesystem support [23] Itanium support removed [23] Intel Meteor Lake Graphics declared stable [23] Initial Nouveau support for Nvidia GSP firmware [23] Ability to disable IA-32 support at boot time on AMD64 [24]
The overhead was measured to be 0.28% according to KAISER's original authors; [6] a Linux developer measured it to be roughly 5% for most workloads and up to 30% in some cases, even with the PCID optimization; [5] for database engine PostgreSQL the impact on read-only tests on an Intel Skylake processor was 7–17% (or 16–23% without PCID ...
If the processor encounters a problem when calling the double fault handler, a triple fault is generated and the processor shuts down. As double faults can only happen due to kernel bugs, they are rarely caused by user space programs in a modern protected mode operating system , unless the program somehow gains kernel access (some viruses and ...
A kernel debugger is a debugger present in some operating system kernels to ease debugging and kernel development by the kernel developers. A kernel debugger might be a stub implementing low-level operations, with a full-blown debugger such as GNU Debugger (gdb), running on another machine, sending commands to the stub over a serial line or a network connection, or it might provide a command ...
Among the Linux features supported by DMTCP are open file descriptors, pipes, sockets, signal handlers, process id and thread id virtualization (ensure old pids and tids continue to work upon restart), ptys, fifos, process group ids, session ids, terminal attributes, and mmap/mprotect (including mmap-based shared memory). DMTCP supports the ...