Hi there,

I'm using ArchLinux and just updated to 1.9.8. I also am using sssd with "sudoers: files sss" in my /etc/nsswitch.conf file. Removing this line works around the issue.

[   56.360844] sudo[2105]: segfault at 8 ip 00007f78af03372a sp 00007ffdfe42abd0 error 4 in sudoers.so[7f78aeff8000+5e000]
[  358.525901] sudo[3022]: segfault at 8 ip 00007fd23fbce72a sp 00007ffc6a158940 error 4 in sudoers.so[7fd23fb93000+5e000]
[  429.123798] sudo[3255]: segfault at 8 ip 00007f0c46ae272a sp 00007ffdeb628cb0 error 4 in sudoers.so[7f0c46aa7000+5e000]
[  451.748556] sudo[3292]: segfault at 8 ip 00007f253f2f272a sp 00007fffbe4ac900 error 4 in sudoers.so[7f253f2b7000+5e000]
[  559.698998] sudo[3511]: segfault at 8 ip 00007f1891bda72a sp 00007ffec42b1c20 error 4 in sudoers.so[7f1891b9f000+5e000]
[  741.884927] sudo[4017]: segfault at 8 ip 00007f53c116572a sp 00007ffd4e798710 error 4 in sudoers.so[7f53c112a000+5e000]

I'm just having an issue getting a core dump, probably because its a suid binary. I'm happy to do whatever testing is needed to pin this one down.

Reverting to 1.9.7p2 works.