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Description of problem:
If I have invalid sudoers line in nsswitch.conf, I see failures that aren't very descriptive when I run "sudo -l".
Scenario 1:
sudoers: files sss: sudoers: files sss
[root@ibm-x3250m4-02 ~]# sudo -l
Segmentation fault (core dumped)
Scenario 2:
sudoers: files sss: sudoers: files
[root@ibm-x3250m4-02 ~]# vi /etc/nsswitch.conf
[root@ibm-x3250m4-02 ~]# sudo -l
sudo: >>> /etc/sudoers: /etc/sudoers.d: Too many open files near line 117 <<<
sudo: parse error in /etc/sudoers near line 117
sudo: unable to open /etc/sudoers: Too many open files
sudo: unable to open /etc/sudoers: Too many open files
sudo: unable to open /etc/sudoers: Too many open files
sudo: unable to open /etc/sudoers: Too many open files
... seems to continue indefinitely.
Version-Release number of selected component (if applicable):
sudo-1.8.6p3-15.el6.x86_64
How reproducible:
very
Steps to Reproduce:
1. echo "sudoers: files sss: sudoers: files sss" >> /etc/nsswitch.conf
2. sudo -l
3. sed -i '/sudoers/d' /etc/nsswitch.conf
4. echo "sudoers: files sss: sudoers: files" >> /etc/nsswitch.conf
5. sudo -l
6. in another window killall -9 sudo
Actual results:
2. core dump
5. infinite loop showing error.
Expected results:
Better error messages and no infinite loop.
Additional info: