Bash Bus Error
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How To Solve Bus Error In Linux
Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, linux bus error core dumped just like you, helping each other. Join them; it only takes a minute: Sign up “Bus error” system error [closed] up vote 6 down vote favorite 2 I am running a linux tool which uses some system bus error in c libraries as we as some custom libraries. The purpose of the tool is to access/configure a PCI-express cards that has some firmware running on it. I made some slight change to code,nothing significant and suddenly got a "Bus error". I know that is is caused by unaligned memory access, but in the above context is it more likely to be in the firmware memory, i.e a firmware read across the PCI-express bus. I certainly don't
How To Debug Bus Error
believe that my small software change could have caused the "Bus error". Another surprising fact is that a different version of software is working well with this firmware. Can anyone throw some light on the issue. linux debugging bus share|improve this question edited May 3 '11 at 13:44 skaffman 276k62614652 asked May 3 '11 at 13:40 liv2hak 3,8341659106 closed as off-topic by Ciro Santilli 烏坎事件2016六四事件 法轮功, Yu Hao, Chris Loonam, John Pirie, Rob Aug 7 '15 at 16:35 This question appears to be off-topic. The users who voted to close gave this specific reason:"Questions seeking debugging help ("why isn't this code working?") must include the desired behavior, a specific problem or error and the shortest code necessary to reproduce it in the question itself. Questions without a clear problem statement are not useful to other readers. See: How to create a Minimal, Complete, and Verifiable example." – Ciro Santilli 烏坎事件2016六四事件 法轮功, Yu Hao, Chris Loonam, John Pirie, RobIf this question can be reworded to fit the rules in the help center, please edit the question. 1 > I certainly don't believe that my small software change could have caused the "Bus error".... –sehe May 3 '11 at 14:21 Voting to close as unclear. We need more details :-) –Ciro Santilli 烏坎事件2016六四事件 法轮功 Aug 7 '15 at 10:55
challenged and removed. (July 2015) (Learn how and when to remove this template message) In computing, a bus error is a fault raised by hardware, notifying an operating system (OS) that a process is trying to access memory that the CPU cannot sigbus error linux physically address: an invalid address for the address bus, hence the name. In modern use bus error vs segmentation fault on most architectures these are much rarer than segmentation faults, which occur primarily due to memory access violations: problems in the logical
Bus Error Ubuntu
address or permissions. On POSIX-compliant platforms, bus errors usually result in the SIGBUS signal being sent to the process that caused the error. SIGBUS can also be caused by any general device fault that the computer detects, http://stackoverflow.com/questions/5870353/bus-error-system-error though a bus error rarely means that the computer hardware is physically broken—it is normally caused by a bug in a program's source code.[citation needed] Bus errors may also be raised for certain other paging errors; see below. Contents 1 Causes 1.1 Non-existent address 1.2 Unaligned access 1.3 Paging errors 2 Example 3 References Causes[edit] There are at least three main causes of bus errors: Non-existent address[edit] Software instructs the CPU to read or https://en.wikipedia.org/wiki/Bus_error write a specific physical memory address. Accordingly, the CPU sets this physical address on its address bus and requests all other hardware connected to the CPU to respond with the results, if they answer for this specific address. If no other hardware responds, the CPU raises an exception, stating that the requested physical address is unrecognized by the whole computer system. Note that this only covers physical memory addresses. Trying to access an undefined virtual memory address is generally considered to be a segmentation fault rather than a bus error, though if the MMU is separate, the processor can't tell the difference. Unaligned access[edit] Most CPUs are byte-addressable, where each unique memory address refers to an 8-bit byte. Most CPUs can access individual bytes from each memory address, but they generally cannot access larger units (16 bits, 32 bits, 64 bits and so on) without these units being "aligned" to a specific boundary (the x86 platform being a notable exception). For example, if multi-byte accesses must be 16 bit-aligned, addresses (given in bytes) at 0, 2, 4, 6, and so on would be considered aligned and therefore accessible, while addresses 1, 3, 5, and so on would be considered unaligned. Similarly, if multi-byte accesses must be 32-bit aligned, addresses 0, 4, 8, 12, and so on would be considered aligned and
Linux command line?In response to an application command (i.e. evince). The application doesn't open, and Bus error message is displayed in console. https://www.quora.com/What-does-Bus-error-mean-in-Linux-command-line UpdateCancelAnswer Wiki1 Answer Ken QuonWritten 316w agoThe operating system is sending http://www.webhostingtalk.com/showthread.php?t=690707 a signal to the application that an improper memory access occurred.The two main causes:non-existent physical address : the CPU tries to read or write, however, the hardware does not respond properly to this addressunaligned word access : for multi-byte word accesses, the address usually needs bus error to be aligned on a particular boundaryLess common:virtual memory pages have disappearedhttp://en.wikipedia.org/wiki/SIGBUShttp://en.wikipedia.org/wiki/Bus...5.5k Views · View UpvotesView More AnswersRelated QuestionsWhat does $! mean in the context of a command line?What does the "-" mean in all the Linux commands?Why is it that while running from the Linux command line you see so many errors? What do Windows and bus error linux other OSs do about it?What is the Linux command line tool for shutting down?How do I compile linux command line source code program to iOS command line program(like program in cydia)?What are some open source command line tools for filtering, and editing audio files/streams in Linux?What is the meaning of the single and double dots that are printed in the command line when you list the contents of a directory?How do I learn all (I mean everything) of the Linux commands?What book should I read to learn command line coding in Linux?How did you learn the Linux command line?What is the best way to familiarize yourself with CLI (command line interface)?What does this command line command mean?What does command line mean?What is the best Linux IRC client?How do I use PLSQL on Linux? I mean, the tools used for using it (GUI or command line)?Why is the Linux command line so complex?What are the 50 most used commands on Linux Command line?Can Kali Linux tools be used witho
Forums Hosting Security and Technology What is mean "Bus error" in linux If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. Results 1 to 6 of 6 Thread: What is mean "Bus error" in linux Tweet Thread Tools Show Printable Version Subscribe to this Thread… Search Thread Advanced Search Display Linear Mode Switch to Hybrid Mode Switch to Threaded Mode 05-03-2008,11:57 PM #1 0218 View Profile View Forum Posts View Forum Threads Aspiring Evangelist Join Date Dec 2003 Posts 377 What is mean "Bus error" in linux Dear All, I am newbie in Linux. Today I up 1 linux server and colo in DC. When I remote access by SSH and ype some command, the sshm will show "Bus Error". May I know what is mean "Bus errro"? Reply With Quote 0 05-04-2008,04:48 AM #2 tix3 View Profile View Forum Posts View Forum Threads Aspiring Evangelist Join Date Aug 2007 Location Greece Posts 390 Usually it meand you are out of ram.You should tail /var/log/messages to see any details. NOT a webhost!helping here just for the fun of it! G(r)eek inside. Reply With Quote 0 05-04-2008,06:01 AM #3 0218 View Profile View Forum Posts View Forum Threads Aspiring Evangelist Join Date Dec 2003 Posts 377 It is a new sevrer. I just setup in DC. Somebody is say possibility is hard disk problem. Can try to full filesystem check. But I am not in DC, may I know how can I do full filesystem check? Reply With Quote 0 05-04-2008,06:03 AM #4 0218 View Profile View Forum Posts View Forum Threads Aspiring Evangelist Join Date Dec 2003 Posts 377 I try tail /var/log/messages: Result May 2 11:48:56 server-01 kernel: hda: status error: status=0x80 { Busy } May 2 11:48:56 server-01 kernel: ide: failed opcode was: unknown May 2 11:48:56 server-01 kernel: hda: no DRQ after issuing MULTWRITE_EXT May 2 11:48:59 server-01 kernel: ide0: