How to create SIGSEGV at particular memory? Post: 302507616

10 More Discussions You Might Find Interesting

1. Programming

SIGSEGV problem

Hi. Can someone to help me in a segfault problem? I have a big C++ program that crash from time to time because it receive the SIGSEGV signal. So my question is: Can I find, without using gdb or other debugging tools, which line from source code cause that problem? Or if exist some gdb API...

2. SCO

Clear / Remove / Create Shared Memory...

Hi all... am not so much brilliant in this area... here i think many good hearted peoples around... so if anybody have intention to reply for my problem please give me a cut and clear picture of how... Thanks. ok comming to my problem... In our MHC server (Sco Unix 4.*) running 19 C process...

3. Programming

SIGSEGV, Segmentation fault

Here is my initiating code: #define NUM 20 static struct tab { int count; int use; } tab; int curtab = 0; int tab_create(int tab_count) { curtab++; tab.use = 1; tab.count = tab_count; kprintf("here!"); return curtab; }

4. Programming

SigSegV during stack unwind (AIX)

Hi I am getting a strange segmentation fault during the unwind process. I am trying to throw an object of an Exception class. During the DoThrow (in libC.a) the stack starts growing until a Signal is received. The object thrown is of a class that inherits from a common class, and the signal...

5. Programming

Gdb classifies a Bus error as SIGSEGV

Consider the following program. int main(){ struct a_t { int *a; unsigned char b; unsigned char c; unsigned char d; } A; unsigned char e; unsigned char f; unsigned char g; g = 1; A.a = (int *)&g; -> Memory misalignment...

6. UNIX for Advanced & Expert Users

Need to create a memory leak

Hi. This might be a strange request, but does anyone have any idea on a simple shell script that would use more and more memory as it ran? Like a purposeful leak. I want to test the behaviour of an already running program when the machine runs out of memory. Thanks!

7. Programming

problem in SIGSEGV signal handling

i wrote handler for sigsegv such that i can allocate memory for a variable to which sigsegv generated for illlegal acces of memory. my code is #include <signal.h> #include<stdio.h> #include<stdlib.h> #include<string.h> char *j; void segv_handler(int dummy) { j=(char *)malloc(10); ...

8. UNIX and Linux Applications

SIGSEGV Signal handling

Hello, Can anybody tell me how can i handle segmentation fault signal, in C code?

9. Solaris

sigsegv Fault

I receive a sigsegv failure. I was under the impression that a core file is created everytime a sigsegv occurrs and the process is terminated. I have had two recent occurrances of a core file not being created. Does anyone know why a core file would not be created.

10. Programming

SIGSEGV when allocate a certain size

The problem: I need to work with large arrays and after one of my structures grew in size my program started getting segmentation fault. My code where I allocate the arrays: static R1 *tarr; static R2 *rarr; proc_init_mem() { const int t_sz = sizeof(R1) *...

LEARN ABOUT POSIX

numastat

NUMACTL(8)						   Linux Administrator's Manual 						NUMACTL(8)

NAME

       numastat - Print statistics about NUMA memory allocation

SYNOPSIS

       numastat

DESCRIPTION

       numastat  displays  NUMA  allocations  statistics from the kernel memory allocator.  Each process has NUMA policies that specifies on which
       node pages are allocated. See set_mempolicy(2) or numactl(8) on details of the available policies.  The numastat  counters  keep  track	on
       what nodes memory is finally allocated.

       The counters are separated for each node. Each count event is the allocation of a page of memory.

       numa_hit is the number of allocations where an allocation was intended for that node and succeeded there.

       numa_miss shows how often an allocation was intended for this node, but ended up on another node due to low memory.

       numa_foreign  is  the  number of allocations that were intended for another node, but ended up on this node.  Each numa_foreign event has a
       numa_miss on another node.

       interleave_hit is the number of interleave policy allocations that were intended for a specific node and succeeded there.

       local_node is incremented when a process running on the node allocated memory on the same node.

       other_node is incremented when a process running on another node allocated memory on that node.

SEE ALSO

       numactl(8) set_mempolicy(2) numa(3)

NOTES

       numastat output is only available on NUMA systems.

       numastat assumes the output terminal has a width of 80 characters and tries to format the output accordingly.

EXAMPLES

       watch -n1 numastat
       watch -n1 --differences=accumulative numastat

FILES

       /sys/devices/system/node/node*/numastat

BUGS

       The output formatting on machines with a large number of nodes could be improved.

SuSE Labs							     Nov 2004								NUMACTL(8)

10 More Discussions You Might Find Interesting

1. Programming

SIGSEGV problem

Discussion started by: vaidac_coder

2. SCO

Clear / Remove / Create Shared Memory...

Discussion started by: yocks

3. Programming

SIGSEGV, Segmentation fault

Discussion started by: micmac700

4. Programming

SigSegV during stack unwind (AIX)

Discussion started by: barak