Bug 55829
| Summary: | System Hangs While trying to allocate memory with malloc() | ||
|---|---|---|---|
| Product: | [Retired] Red Hat Linux | Reporter: | Deian Chepishev <dchepishev> |
| Component: | kernel | Assignee: | Arjan van de Ven <arjanv> |
| Status: | CLOSED ERRATA | QA Contact: | |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | 7.2 | ||
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | i386 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2001-11-07 12:18:16 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
The 2.4.9 kernel errata should have this fixed. |
From Bugzilla Helper: User-Agent: Mozilla/4.0 (compatible; MSIE 5.5; Windows NT 5.0) Description of problem: When I make an infinite cycle for allocating memory with malloc function. The first time when i start the program After the memory is finished the system Terminates the process, But if i start 2 processes simultaneously the system almost allways hangs completely. The interesting thing is that this happens if I use the default RedHat kernel shiped with RH7.2 (2.4.7). If I try with 2.4.14 this does not happen. Even regular user can crash the system Version-Release number of selected component (if applicable): How reproducible: Sometimes Steps to Reproduce: 1. Write this code #include<stdio.h> int main(){ int *i; while(1){ i=(int*)malloc(10000); } return 0; } 2.Compile the program 3. Run the program. If it does not hang from the first time. Start 2 processes SIMULTANEOUSLY. It will hang for at most 4 tryes. Actual Results: The system is Completely Hanged. I can not change the console with Alt-F1-6. I can do nothing from the keyboard. I do not know about the network but may be it hangs too. Expected Results: Instead of this the system should terminate the processes as it had done the first time when i Tryed this Additional info: Nothing Appears on the console. My system is RH7.2 Default instalation. No patches applyed. Intel Celeron 433 163 MB RAM BX440 chipset But this works and on P3 733, 256 MB RAM, I815 chipset. The same Distrubution with all relevant patches applyed only the kernel is default. I have and kernel 2.4.14 compiled too and this is not happening with it. Even regular user can crash the system.