Sometimes the event of aborting can be given a special name, as in the case of an abort involving a Unix kernel where it is known as a kernel panic.

The underpinnings for the contemporary moral panic were found in a rise of five factors in the years leading up to the 1980s: The establishment of Fundamentalist Christianity and political organization of the Moral Majority ; the rise of the Anti-cult movement which spread ideas of abusive cults kidnapping and brainwashing children and teens ; the appearance of the Church of Satan and other explicitly Satanist groups that added a kernel of truth to the existence of Satanic cults ; the appearance of the child abuse industry and a group of professionals dedicated to the protection of children ; and the popularization of posttraumatic stress disorder, repressed memory and corresponding survivor movement.

A kernel panic message is displayed by an operating system upon detecting an internal system error from which it cannot recover.

A kernel panic is an action taken by an operating system upon detecting an internal fatal error from which it cannot safely recover.

The kernel panic was introduced in an early version of Unix and demonstrated a major difference between the design philosophies of Unix and its predecessor Multics.

* Kernel panic, a computer crash in which the kernel of the system is halted

* BSOD – shows fake fatal screen of death variants from many computer systems, including Microsoft Windows Blue Screen of Death, a Linux kernel panic, a Darwin crash, an Amiga " Guru Meditation " error, a sad Mac, and more.

The Mac OS X kernel panic alert.

Among the MacBook and MacBook Pro community there have been several owners who installed aftermarket hard drives already equipped with anti-shock features who reported experiencing kernel panic errors whenever their unit was physically moved.

It is started by the kernel using a hard-coded filename, and if the kernel is unable to start it, a kernel panic will result.

The debugger program MacsBug was sometimes used even by end users to provide basic ( though not always reliable ) error recovery, and could be used for troubleshooting purposes much as the output of a Unix kernel panic or a Windows NT Blue Screen of Death could be.

A kernel panic screen ( either text overwritten on the screen in older versions, or simplified to a reboot message in more recent versions ) replaces the bomb symbol but appears less often due to the radically different system architecture.

Since the kernel was privileged ( running in kernel-space ) over other OS servers and software, it was possible for malfunctioning or malicious programs to send it commands that would cause damage to the system, and for this reason the kernel checked every message for validity.

Only 18μs of this was hardware related ; the rest was the Mach kernel running various routines on the message.

The kernel then checks that the caller has required access rights and that the message is valid.

An additional 18 were used by the MMU to map the message between user-space and kernel space.

The rest, the majority of the actual problem, was due to the kernel performing tasks such as checking the message for port access rights.

The message is copied, by the kernel, from the address space of the sending process to that of the receiving process.

Much engineering emphasis was placed on supportability and reliable operations including continued work on CPU and device driver support ( which was, for the most part, also sent to UC Berkeley ), hardware failure support and recovery with enhancement to error message text, documentation, and general work at both the kernel and systems program levels.

The kernel routines that handle panics, known as in AT & T-derived and BSD Unix source code, are generally designed to output an error message to the console, dump an image of kernel memory to disk for post-mortem debugging and then either wait for the system to be manually rebooted, or initiate an automatic reboot.

The Amiga multitasking kernel was also one of the first to implement a microkernel OS methodology based on a real-time message passing ( inter-process communication ) core known as Exec ( for executive ) with dynamically loaded libraries and devices as optional modules around the core.

Quark also has an asynchronous / synchronous message interface similar to Amiga's Exec kernel but adapted to the memory protected environment.

As a difference to other microkernel systems the IPC of the hymk doesn't contain system calls for transferring message data through the kernel.

The developers of the hymk think that this mechanism will improve the performance of the whole system because there is no need for buffering message data in kernel mode.

Whenever a message was sent to the kernel for delivery, it would first check that the program had access to the port in question by comparing with the mapping table for that program.

Normally this would require one message to the kernel to find the file server, then three additional messages to the file server itself-one to resolve the file name into an object id, another to open that id, then finally another to read the file.

The message would be sent to the kernel, and then passed off to the file server who would handle all three requests before finally returning data.

For instance, an application might ask the kernel for the " file system " and be handed a 32-bit key representing a program id, and then use that key to send a message to the file system asking it to open the file " my addresses ", which would result in a 64-bit key being handed back.

The server id was maintained in the kernel, allowing it to hand off the message over the network if the server being referenced was on a remote machine.

Ports were essentially message queues that were maintained by the Aleph kernel, identified by a machine unique ( as opposed to globally unique ) ID consisting of a process id, port id pair.

It is historically notable for being the first attempt to break down an operating system into a group of interacting programs communicating via a message passing kernel.

* For short messages ( fewer than 256 bytes ) the kernel copies the message buffers between processes, from the address space of the sending process to the system address space, and from there to the receiving process ' address space.

For every group G there is a natural group homomorphism G → Aut ( G ) whose image is the group Inn ( G ) of inner automorphisms and whose kernel is the center of G. Thus, if G has trivial center it can be embedded into its own automorphism group.

He is also credited with the first port of the GNU C compiler to the INTEL 386 architecture, used in the original implementation of the Linux kernel.

Every character is automatically continuous from A to C, since the kernel of a character is a maximal ideal, which is closed.

As an algebra, a unital commutative Banach algebra is semisimple ( i. e., its Jacobson radical is zero ) if and only if its Gelfand representation has trivial kernel.

nuclei ; from Latin or, meaning kernel ) is a membrane-enclosed organelle found in eukaryotic cells.

When a transition between user mode and kernel mode is required in an operating system, a context switch is not necessary ; a mode transition is not by itself a context switch.

In mathematics, it is closely related to the Poisson kernel, which is the fundamental solution for the Laplace equation in the upper half-plane.

Only the kernel deals with files, but it handles all user-space interaction with ( virtual ) files in a manner that is transparent to the user-space programs.

The strategy is based on a coupling of special microprocessor hardware features, often involving the memory management unit, to a special correctly implemented operating system kernel.

Debian GNU / Linux, which includes the GNU OS tools and Linux kernel, is a popular and influential Linux distribution.

The advantage of loadable device drivers is that they can be loaded only when necessary and then unloaded, thus saving kernel memory.

The primary benefit of running a driver in user mode is improved stability, since a poorly written user mode device driver cannot crash the system by overwriting kernel memory.

The equivalence kernel of a function f is the equivalence relation ~ defined by.

The equivalence kernel of an injection is the identity relation.

* An equivalence relation ~ on X is the equivalence kernel of its surjective projection π: X → X /~.

Less formally, the equivalence relation ker on X, takes each function f: X → X to its kernel ker f. Likewise, ker ( ker ) is an equivalence relation on X ^ X.

This equivalence relation is known as the kernel of.