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Description of problem:
I had a C executable that was using a char array of a size around 104857600. For example,
#define BUFFERMAX 104857600
char buffer[BUFFERMAX+1]; /* message buffer */
The C executable ran fine on RHEL 7 Linux x86_64 machines. However, when we ported over to a RHEL 8 server, the program would just throw a "segmentation fault" when you tried to execute it. I recompiled the program with a lower value for the BUFFERMAX (i.e. 4194304), and now it runs fine on RHEL 8. I am fine with this workaround, but wanted to report the potential bug here for RHEL 8.
Version-Release number of selected component (if applicable):
Issue happened on the following:
REDHAT_BUGZILLA_PRODUCT="Red Hat Enterprise Linux 8"
REDHAT_BUGZILLA_PRODUCT_VERSION=8.8
REDHAT_SUPPORT_PRODUCT="Red Hat Enterprise Linux"
REDHAT_SUPPORT_PRODUCT_VERSION="8.8"
Red Hat Enterprise Linux release 8.8 (Ootpa)
How reproducible:
Write a C program that has char array of around 104857600. See if it can run on both RHEL 7 and RHEL 8.
Steps to Reproduce:
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Actual results:
Expected results:
Additional info:
If you are a Red Hat customer with an active subscription, please visit the Red Hat Customer Portal [1] for assistance with your issue.
[1] http://access.redhat.com/
I'm marking this CLOSED/NOTABUG because there doesn't seem to be any direct issue with glibc, but rather a `ulimit -d` issue.
If you are a Red Hat customer with an active subscription, please reach out to your support representative.