Freebsd Bus Error Core Dumped
Contents |
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 bus error in linux cannot physically address: an invalid address for the address bus, hence the name. In modern bus error (core dumped) in linux use on most architectures these are much rarer than segmentation faults, which occur primarily due to memory access violations: problems in the how to debug bus error logical 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
How To Solve Bus Error In Linux
computer detects, 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 bus error core dumped c programming read or 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
Sign in Pricing Blog Support Search GitHub This repository Watch 159 Star 1,784 Fork 263 jxcore/jxcore https://github.com/jxcore/jxcore/issues/767 Code Issues 162 Pull requests 5 Projects 0 Wiki Pulse Graphs New issue V8 on FreeBSD: Bus error (core dumped) when require() long file name #767 Open ktrzeciaknubisa opened this Issue Jan 6, 2016 · 0 comments Projects None yet Labels None yet Milestone No milestone Assignees No bus error one assigned 1 participant JXcore member ktrzeciaknubisa commented Jan 6, 2016 With 0.3.1.0 V8 I experience a problem on FreeBSD x64. This issue is isolated from #762 . Basically the point is that when we have long file name (or file path), require() causes a crash, e.g.: require("./123456789/123456789/123456789/123456789/123456789/123456789/123456789/123456789/123456789/12345/file.js"); This is a test bus error core case: test-require-long-path.js. On my platform it crashed for file path length equal e.g. 101 or 165, so the number is not static, e.g.: $ gdb ~/Github/jxcore/out_v8_64/Release/jx (gdb) run test/jxcore/test-require-long-path.js ... Try to require() file with path length = 161 OK Try to require() file with path length = 162 OK Try to require() file with path length = 163 OK Try to require() file with path length = 164 OK Try to require() file with path length = 165 OK [New Thread 802c06400 (LWP 100373/jx)] Program received signal SIGBUS, Bus error. [Switching to Thread 802c06400 (LWP 100373/jx)] 0x0000000000721d70 in ?? () This test case does not use mt or tasks. ktrzeciaknubisa referenced this issue Jan 6, 2016 Open jx install fails on FreeBSD 9/10 #762 Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment Contact GitHub API Training Shop Blog About © 2016 GitHu