Common Causes Bus Error
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here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this bus error c++ site About Us Learn more about Stack Overflow the company Business Learn more bus error in linux about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss linux bus error core dumped Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up What is a how to debug bus error bus error? up vote 155 down vote favorite 49 What does the "bus error" message mean, and how does it differ from a segfault? c unix segmentation-fault bus-error share|improve this question edited Oct 18 '15 at 10:44 Cool Guy 15.8k51952 asked Oct 17 '08 at 14:48 raldi 7,239216178 add a comment| 15 Answers 15 active oldest votes up vote 150 down vote accepted Bus
How To Solve Bus Error In Linux
errors are rare nowadays on x86 and occur when your processor cannot even attempt the memory access requested, typically: using a processor instruction with an address that does not satisfy its alignment requirements. Segmentation faults occur when accessing memory which does not belong to your process, they are very common and are typically the result of: using a pointer to something that was deallocated. using an uninitialized hence bogus pointer. using a null pointer. overflowing a buffer. PS: To be more precise this is not manipulating the pointer itself that will cause issues, it's accessing the memory it points to (dereferencing). share|improve this answer edited Oct 17 '08 at 15:18 answered Oct 17 '08 at 15:12 bltxd 5,71322336 52 They aren't rare; I'm just at Exercise 9 from How to Learn C the Hard Way and already encountered one... –11684 Mar 26 '13 at 20:12 5 Another cause of bus errors (on Linux anyway) is when the operating system can't back a virtual page with physical memory (e.g. low-memory conditions or out of huge pages when using huge page memory.) Typically mmap (and malloc) just reserve the virtual address s
has received a signal indicating that it attempted to gdb bus error perform I/O to a device that is restricted or that does not exist. http://stackoverflow.com/questions/212466/what-is-a-bus-error This message is usually accompanied by a core dump, except on read-only file systems. Action Use a debugger to examine the core file and determine what program https://docs.oracle.com/cd/E19455-01/806-1075/msgs-1097/index.html fault or system problem led to the bus error. If possible, check the program's output files for data corruption that might have occurred before the bus error. Technical Notes Bus errors can result from either a programming error or device corruption on your system. Some common causes of bus errors are: invalid file descriptors, unreasonable I/O requests, bad memory allocation, misaligned data structures, compiler bugs, and corrupt boot blocks. Previous: Broken pipeNext: "C" © 2010, Oracle Corporation and/or its affiliates
and End-of-Life ProductsCisco IOS Software Releases 12.1 MainlineTroubleshoot and AlertsTroubleshooting TechNotes Troubleshooting Bus Error Crashes Download Print Available Languages Download Options PDF (153.3 KB) View with Adobe Reader on a variety of http://www.cisco.com/c/en/us/support/docs/ios-nx-os-software/ios-software-releases-121-mainline/7949-crashes-buserror-troubleshooting.html devices ePub (111.5 KB) View in various apps on iPhone, iPad, Android, Sony Reader, or Windows Phone Mobi (Kindle) (129.9 KB) View on Kindle device or Kindle app on multiple devices Updated:Jun 16, 2016 Document https://software.intel.com/en-us/articles/determining-root-cause-of-sigsegv-or-sigbus-errors ID:7949 ContentsIntroductionPrerequisitesRequirementsComponents UsedConventionsIdentifying Bus Error CrashesTroubleshooting Bus Error CrashesTroubleshooting Bus Error Crashes on 68000 Processor PlatformsTroubleshooting Bus Error Crashes on RISC Processor PlatformsSpecial Types of Bus Error CrashesTroubleshooting Techniques for Bus Error Exception Boot LoopsCisco bus error IOS Software Loaded Does Not Support Installed HardwareSoftware FailureMis-seated HardwareHardware FailureInformation to Collect if You Open a Service RequestRelated Information Introduction This document explains how to identify bus error crashes and how to troubleshoot those crashes depending on the type of processor you have in your Cisco router. Prerequisites Requirements Cisco recommends that you read Troubleshooting Router Crashes before proceeding with this document. Components Used The information in this bus error in document is based on these software and hardware versions: All Cisco IOS® software versions All Cisco routers Note:This document does not apply to Cisco Catalyst switches or MGX platforms. The information in this document was created from the devices in a specific lab environment. All of the devices used in this document started with a cleared (default) configuration. If your network is live, make sure that you understand the potential impact of any command. Conventions Refer to the Cisco Technical Tips Conventions for more information on document conventions. Identifying Bus Error Crashes The system encounters a bus error when the processor tries to access a memory location that either does not exist (a software error) or does not respond properly (a hardware problem). A bus error can be identified from the output of the show version command provided by the router if not power-cycled or manually reloaded. If you have the output of a show version or show technical-support command (from enable mode) from your Cisco device, you can use it to display potential issues and fixes. In order to use it, you must be a registered customer, be logged in, and have JavaScript enabled. Router uptime is 2 days, 21 hours, 30 minutes System restarted by
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