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Description of problem:
A customer who enabled fapolicyd service hit boot issues after a kernel update: the initramfs was "corrupted" and not including many required libraries, due to "ldd" not working anymore.
In a terminal, executing "ldd" shows unexpected result:
# ldd /bin/bash
not a dynamic executable
# dracut -f /tmp/initramfs.img $(uname -r)
# ll /tmp/initramfs.img
-rw-------. 1 root root 11280564 Mar 10 15:17 /tmp/initramfs.img
--> invalid size (too small)
# lsinitrd /tmp/initramfs.img | grep libc.so
--> no output, was expecting:
-rw-r--r-- 1 root root 253 Nov 6 16:07 usr/lib64/libc.so
lrwxrwxrwx 1 root root 12 Nov 6 16:07 usr/lib64/libc.so.6 -> libc-2.28.so
Version-Release number of selected component (if applicable):
fapolicyd-0.8.10-3.el8_1.1.x86_64
How reproducible:
ALWAYS
Steps to Reproduce:
1. Start fapolicyd
# systemctl start fapolicyd
2. Execute dracut or ldd
# ldd /bin/bash
Actual results:
"not a dynamic executable"
OR
"
linux-vdso.so.1 (0x00007ffce8ff7000)
libtinfo.so.6 => not found
libdl.so.2 => not found
libc.so.6 => not found
"
Rule being hit when executing "ldd /bin/bash" is:
# Prevent execution by ld.so
deny_audit pattern=ld_so all
Mar 10 15:36:33 vm-rhel8 fapolicyd[16127]: rule:3 dec=deny_audit auid=0 pid=16152 exe=/usr/lib64/ld-2.28.so file=/usr/bin/bash