suspending an application preemptively before out of memory causes a segmentation fault

suspending an application preemptively before out of memory causes a segmentation fault

By : user2953481
Date : November 21 2020, 01:01 AM
seems to work fine There is no way for a process to anticipate the fact a memory access will fail due to virtual memory shortage, especially with the mmaped sparse file technique you are using.
You might trap the sigsegv but there are issues with this approach (see Segmentation fault handling ). Otherwise, the simpler solution would be to monitor the file system available space and freeze/stop the most consuming process preventively.
code :

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Could not access memory, Segmentation Fault

Could not access memory, Segmentation Fault

By : Tomski
Date : March 29 2020, 07:55 AM
Hope that helps My C++ is very rusty, but assuming that no operator overloading is happening, doesn't
code :
Code is causing segmentation fault when allocating memory or aborts program when freeing memory

Code is causing segmentation fault when allocating memory or aborts program when freeing memory

Date : March 29 2020, 07:55 AM
wish of those help When I try to run my code, it causes segmentation fault on malloc on 89th line with "s1 = malloc(65536);" which persist even if I change it to calloc or realloc and also it causes this to be written if I have my function to free memory on line 82 or 86: , Consider one of your first tests with s_strcat():
code :
    s_init(&ss1, NULL, 8);
    s_strcat(&ss1, &ss3);
   if(array == NULL) {
        str->length = num;

        if(num != 0)
            str->string = malloc(num);
    for(i = destination->length, j = 0; j < source->length; i++, j++)
        destination->string[i] = source->string[j];
    for(i = 0; i < source->length; i++)
        destination->string[i + destination->length] = source->string[i];
C++ Memory Segmentation Fault?

C++ Memory Segmentation Fault?

By : Rahul Singh
Date : March 29 2020, 07:55 AM
it helps some times I don't know if it's the only error, but is an error.
You define each_day::mov_avg of size 1
code :
float mov_avg[1];
day[dayNumber].mov_avg[mv_num] = 0; //ERROR HERE? (yes, when mv_num == 1)
day[dayNumber].mov_avg[mv_num] = sum_of_elems / smaSize;
day[dayNumber].mov_avg[mv_num] = sum_of_elems / smaSize;
if (day[dayNumber].mov_avg[1] != 0) {
    if (day[dayNumber].mov_avg[0] < day[dayNumber].mov_avg[1] && holdingLong == true) {
float mov_avg[2];
Why I get segmentation fault for psubd xmm, memory?

Why I get segmentation fault for psubd xmm, memory?

By : Felix Xu
Date : March 29 2020, 07:55 AM
around this issue The segmentation fault is because LABELX is not aligned to a 16 byte address.
Define LABELX using the following:
code :
.local LABELX
.comm LABELX, 16, 16
segmentation fault due to freeing memory

segmentation fault due to freeing memory

By : Jee Va
Date : March 29 2020, 07:55 AM
This might help you Errors in freeing memory are generally caused by freeing the same pointer twice (not likely here), freeing an invalid pointer, or a previous buffer underrun (of the same block) or overrun (the block before it) causing administrative data to become corrupted. Since you say it happens with large files as input rather than small, you're most likely overrunning a buffer.
It looks like you're overrunning one_seq[] by iterating between 0 and length, when you allocate only lines elements.
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