When does a bus error cause a segmentation fault?
An index above 77791 and below -4128 will cause a segmentation fault (SIGSEGV). 24544 will cause a Bus error (SIGBUS). Here the complete map: If you look at the disassembled code, you see that the borders of the ranges with bus errors are not as odd as the index appears:
What is the meaning of bus error 10?
Note : if it would have been an error due to memory allocation it would have been given segmentation fault at the run time .But this error is coming due to constant string modification or you can go through the below for more details abt bus error : using a processor instruction with an address that does not satisfy its alignment requirements.
Why is there an error on the C Bus?
If you register a signal handler using sigaction () and you set SA_SIGINFO, it may be possible to have your program examine the faulting memory address and handle only memory mapped file errors. For instance, a bus error might be caused when your program tries to do something that the hardware bus doesn’t support.
What causes a bus error on a SPARC?
For instance, a bus error might be caused when your program tries to do something that the hardware bus doesn’t support. On SPARCs, for instance, trying to read a multi-byte value (such as an int, 32-bits) from an odd address generated a bus error.
Where did the bus fatal error come from?
The issue occurred after doing a linux kernel security patch and restarting (I’m running Ubuntu 14.04 and am on Linux 3.13.0-100-generic). Initially, the machine would crash while booting into the OS but I somehow managed to get it too boot up consistently.
Can a bus error be a segmentation fault?
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 cannot tell the difference. Most CPUs are byte-addressable, where each unique memory address refers to an 8-bit byte.
What does it mean to have a bus error?
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 physically address: an invalid address for the address bus, hence the name.
Is there a bus fatal error on Slot 1?
2020-01-08T18:11:33-0400 PCI1360 A bus fatal error was detected on a component at slot 1. 2020-01-08T09:29:34-0400 CPU0704 CPU 2 machine check error detected. 2020-01-08T09:26:30-0400 CPU0704 CPU 2 machine check error detected. 2020-01-08T09:24:57-0400 CPU0704 CPU 2 machine check error detected.