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Description of problem:
I just notice this problem from kernel-3.10.0-500.el7, like:
# kdumpctl restart
kexec: unloaded kdump kernel
Stopping kdump: [OK]
mmap: Invalid argument
Detected change(s) in the following file(s):
/etc/kdump.conf
Rebuilding /boot/initramfs-3.10.0-500.el7.x86_64kdump.img
mmap: Invalid argument
mmap: Invalid argument
mmap: Invalid argument
mmap: Invalid argument
mmap: Invalid argument
mmap: Invalid argument
mmap: Invalid argument
mmap: Invalid argument
mmap: Invalid argument
mmap: Invalid argument
mmap: Invalid argument
kexec: loaded kdump kernel
Starting kdump: [OK]
Can't find this message on kernel-3.10.0-495.el7, i will do some kernel bisect to make sure which fix caused this problem.
Version-Release number of selected component (if applicable):
kexec-tools-2.0.7-49.el7
How reproducible:
Steps to Reproduce:
1.
2.
3.
Actual results:
Expected results:
Additional info:
It is the restorecon command which is generating this error message.
# restorecon /var/crash/
mmap: Invalid argument
# rpm -qf `which restorecon`
policycoreutils-2.5-8.el7.x86_64
However, version of policycoreutils seems same in RHEL-7.3-20160901.1 and RHEL-7.3-20160825.1.
I did some more experiments with policycoreutils code from https://github.com/SELinuxProject/selinux.git. This error is printed when selabel_open() is called, which is part of libselinux. RHEL-7.3-20160901.1 has libselinux-2.5-6 and, RHEL-7.3-20160825.1 had libselinux-2.5-5. So, I think error was introduced in libselinux-2.5-6.
Therefore, it would be good to assign this BZ to selinux team.
Simplified reproducer:
(1) Use libselinux-2.5-6.el7.x86_64
(2) execute `restorecon /var/crash/`
You will see a message "mmap: Invalid argument".