sudo vim
[pam_yubico.c:parse_cfg(736)] called.
[pam_yubico.c:parse_cfg(737)] flags 32768 argc 1
[pam_yubico.c:parse_cfg(739)] argv[0]=debug
[pam_yubico.c:parse_cfg(740)] id=-1
[pam_yubico.c:parse_cfg(741)] key=(null)
[pam_yubico.c:parse_cfg(742)] debug=1
[pam_yubico.c:parse_cfg(743)] alwaysok=0
[pam_yubico.c:parse_cfg(744)] verbose_otp=0
[pam_yubico.c:parse_cfg(745)] try_first_pass=0
[pam_yubico.c:parse_cfg(746)] use_first_pass=0
[pam_yubico.c:parse_cfg(747)] authfile=(null)
[pam_yubico.c:parse_cfg(748)] ldapserver=(null)
[pam_yubico.c:parse_cfg(749)] ldap_uri=(null)
[pam_yubico.c:parse_cfg(750)] ldapdn=(null)
[pam_yubico.c:parse_cfg(751)] user_attr=(null)
[pam_yubico.c:parse_cfg(752)] yubi_attr=(null)
[pam_yubico.c:parse_cfg(753)] yubi_attr_prefix=(null)
[pam_yubico.c:parse_cfg(754)] url=(null)
[pam_yubico.c:parse_cfg(755)] capath=(null)
[pam_yubico.c:parse_cfg(756)] token_id_length=12
[pam_yubico.c:parse_cfg(757)] mode=client
[pam_yubico.c:parse_cfg(758)] chalresp_path=(null)
[pam_yubico.c:pam_sm_authenticate(790)] get user returned: jon
Yubikey for `jon': 
[pam_yubico.c:pam_sm_authenticate(897)] conv returned 44 bytes
[pam_yubico.c:pam_sm_authenticate(915)] Skipping first 0 bytes. Length is 44, token_id set to 12 and token OTP always 32.
[pam_yubico.c:pam_sm_authenticate(922)] OTP: XXXXXXXXXXXX ID: XXXXXXXXXXXXXXXXXXXXXXX 
*** glibc detected *** sudo: double free or corruption (out): 0x00007f9374000910 ***
======= Backtrace: =========
/lib/libc.so.6(+0x784a6)[0x7f937ddc74a6]
/lib/libc.so.6(fclose+0x14d)[0x7f937ddb7dcd]
/lib/libnss_files.so.2(+0x3a25)[0x7f937db45a25]
/lib/libnss_files.so.2(_nss_files_gethostbyname4_r+0x2e9)[0x7f937db46e69]
/lib/libc.so.6(+0xce95a)[0x7f937de1d95a]
/lib/libc.so.6(getaddrinfo+0xf4)[0x7f937de20d34]
/lib/libcurl.so.4(+0x40244)[0x7f937ceb3244]
/lib/libcurl.so.4(+0x476c4)[0x7f937ceba6c4]
/lib/libcurl.so.4(+0x46213)[0x7f937ceb9213]
/lib/libpthread.so.0(+0x7e0f)[0x7f937b952e0f]
/lib/libc.so.6(clone+0x6d)[0x7f937de3304d]
======= Memory map: ========
00400000-00418000 r-xp 00000000 08:02 281480                             /usr/bin/sudo
00617000-00618000 r--p 00017000 08:02 281480                             /usr/bin/sudo
00618000-00619000 rw-p 00018000 08:02 281480                             /usr/bin/sudo
00619000-0061b000 rw-p 00000000 00:00 0 
01535000-015c4000 rw-p 00000000 00:00 0                                  [heap]
7f935c000000-7f935c021000 rw-p 00000000 00:00 0 
7f935c021000-7f9360000000 ---p 00000000 00:00 0 
7f9364000000-7f9364021000 rw-p 00000000 00:00 0 
7f9364021000-7f9368000000 ---p 00000000 00:00 0 
7f936b7ff000-7f936b800000 ---p 00000000 00:00 0 
7f936b800000-7f936c000000 rw-p 00000000 00:00 0                          [stack:9966]
7f936c000000-7f936c021000 rw-p 00000000 00:00 0 
7f936c021000-7f9370000000 ---p 00000000 00:00 0 
7f9370000000-7f9370021000 rw-p 00000000 00:00 0 
7f9370021000-7f9374000000 ---p 00000000 00:00 0 
7f9374000000-7f9374021000 rw-p 00000000 00:00 0 
7f9374021000-7f9378000000 ---p 00000000 00:00 0 
7f937824d000-7f9378262000 r-xp 00000000 08:02 279214                     /usr/lib/libgcc_s.so.1
7f9378262000-7f9378461000 ---p 00015000 08:02 279214                     /usr/lib/libgcc_s.so.1
7f9378461000-7f9378462000 rw-p 00014000 08:02 279214                     /usr/lib/libgcc_s.so.1
7f9378462000-7f9378467000 r-xp 00000000 08:02 264302                     /usr/lib/libnss_dns-2.16.so
7f9378467000-7f9378666000 ---p 00005000 08:02 264302                     /usr/lib/libnss_dns-2.16.so
7f9378666000-7f9378667000 r--p 00004000 08:02 264302                     /usr/lib/libnss_dns-2.16.so
7f9378667000-7f9378668000 rw-p 00005000 08:02 264302                     /usr/lib/libnss_dns-2.16.so
7f9378668000-7f9378669000 ---p 00000000 00:00 0 
7f9378669000-7f9378e69000 rw-p 00000000 00:00 0                          [stack:9965]
7f9378e69000-7f9378e6a000 ---p 00000000 00:00 0 
7f9378e6a000-7f937966a000 rw-p 00000000 00:00 0                          [stack:9964]
7f937966a000-7f937966b000 ---p 00000000 00:00 0 
7f937966b000-7f9379e6b000 rw-p 00000000 00:00 0                          [stack:9963]
7f9379e6b000-7f9379e6c000 ---p 00000000 00:00 0 
7f9379e6c000-7f937a66c000 rw-p 00000000 00:00 0                          [stack:9962]
7f937a66c000-7f937a66d000 r-xp 00000000 08:02 268955                     /usr/lib/security/pam_nologin.so
7f937a66d000-7f937a86d000 ---p 00001000 08:02 268955                     /usr/lib/security/pam_nologin.so
7f937a86d000-7f937a86e000 r--p 00001000 08:02 268955                     /usr/lib/security/pam_nologin.so
7f937a86e000-7f937a86f000 rw-p 00002000 08:02 268955                     /usr/lib/security/pam_nologin.so
7f937a86f000-7f937a878000 r-xp 00000000 08:02 268552                     /usr/lib/libgssglue.so.1.0.0
7f937a878000-7f937aa77000 ---p 00009000 08:02 268552                     /usr/lib/libgssglue.so.1.0.0
7f937aa77000-7f937aa78000 rw-p 00008000 08:02 268552                     /usr/lib/libgssglue.so.1.0.0
7f937aa78000-7f937aa9d000 r-xp 00000000 08:02 268594                     /usr/lib/libtirpc.so.1.0.10
7f937aa9d000-7f937ac9d000 ---p 00025000 08:02 268594                     /usr/lib/libtirpc.so.1.0.10
7f937ac9d000-7f937ac9f000 rw-p 00025000 08:02 268594                     /usr/lib/libtirpc.so.1.0.10
7f937ac9f000-7f937acb4000 r-xp 00000000 08:02 264291                     /usr/lib/libnsl-2.16.so
7f937acb4000-7f937aeb3000 ---p 00015000 08:02 264291                     /usr/lib/libnsl-2.16.so
7f937aeb3000-7f937aeb4000 r--p 00014000 08:02 264291                     /usr/lib/libnsl-2.16.so
7f937aeb4000-7f937aeb5000 rw-p 00015000 08:02 264291                     /usr/lib/libnsl-2.16.so
7f937aeb5000-7f937aeb7000 rw-p 00000000 00:00 0 
7f937aeb7000-7f937aec2000 r-xp 00000000 08:02 268975                     /usr/lib/security/pam_unix.so
7f937aec2000-7f937b0c2000 ---p 0000b000 08:02 268975                     /usr/lib/security/pam_unix.so
7f937b0c2000-7f937b0c3000 r--p 0000b000 08:02 268975                     /usr/lib/security/pam_unix.so
7f937b0c3000-7f937b0c4000 rw-p 0000c000 08:02 268975                     /usr/lib/security/pam_unix.so
7f937b0c4000-7f937b0d0000 rw-p 00000000 00:00 0 
7f937b0d0000-7f937b0d8000 r-xp 00000000 08:02 264265                     /usr/lib/libcrypt-2.16.so
7f937b0d8000-7f937b2d7000 ---p 00008000 08:02 264265                     /usr/lib/libcrypt-2.16.so
7f937b2d7000-7f937b2d8000 r--p 00007000 08:02 264265                     /usr/lib/libcrypt-2.16.so
7f937b2d8000-7f937b2d9000 rw-p 00008000 08:02 264265                     /usr/lib/libcrypt-2.16.so
7f937b2d9000-7f937b307000 rw-p 00000000 00:00 0 
7f937b307000-7f937b318000 r-xp 00000000 08:02 278587                     /usr/lib/libusb-1.0.so.0.1.0
7f937b318000-7f937b517000 ---p 00011000 08:02 278587                     /usr/lib/libusb-1.0.so.0.1.0
7f937b517000-7f937b518000 r--p 00010000 08:02 278587                     /usr/lib/libusb-1.0.so.0.1.0
7f937b518000-7f937b519000 rw-p 00011000 08:02 278587                     /usr/lib/libusb-1.0.so.0.1.0
7f937b519000-7f937b532000 r-xp 00000000 08:02 273769                     /usr/lib/libsasl2.so.2.0.23
7f937b532000-7f937b732000 ---p 00019000 08:02 273769                     /usr/lib/libsasl2.so.2.0.23
7f937b732000-7f937b733000 r--p 00019000 08:02 273769                     /usr/lib/libsasl2.so.2.0.23
7f937b733000-7f937b734000 rw-p 0001a000 08:02 273769                     /usr/lib/libsasl2.so.2.0.23
7f937b734000-7f937b747000 r-xp 00000000 08:02 264275                     /usr/lib/libresolv-2.16.so
7f937b747000-7f937b947000 ---p 00013000 08:02 264275                     /usr/lib/libresolv-2.16.so
7f937b947000-7f937b948000 r--p 00013000 08:02 264275                     /usr/lib/libresolv-2.16.so
7f937b948000-7f937b949000 rw-p 00014000 08:02 264275                     /usr/lib/libresolv-2.16.so
7f937b949000-7f937b94b000 rw-p 00000000 00:00 0 
7f937b94b000-7f937b962000 r-xp 00000000 08:02 264273                     /usr/lib/libpthread-2.16.so
7f937b962000-7f937bb61000 ---p 00017000 08:02 264273                     /usr/lib/libpthread-2.16.so
7f937bb61000-7f937bb62000 r--p 00016000 08:02 264273              Aborted