[Bug 1090554] [NEW] id segfaults when looking up user information
Launchpad Bug Tracker
1090554 at bugs.launchpad.net
Fri Dec 14 21:38:52 UTC 2012
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When using libpam-ldap and nscd, the following occurs:
$ id sfabel
*** glibc detected *** id: double free or corruption (top): 0x000000000099b0f0 ***
======= Backtrace: =========
/lib/x86_64-linux-gnu/libc.so.6(+0x7eb96)[0x7f68cca85b96]
/usr/lib/x86_64-linux-gnu/libldap_r-2.4.so.2(+0x38769)[0x7f68cbef6769]
/usr/lib/x86_64-linux-gnu/libldap_r-2.4.so.2(+0x3570e)[0x7f68cbef370e]
/usr/lib/x86_64-linux-gnu/libldap_r-2.4.so.2(ldap_pvt_tls_init_def_ctx+0x1d)[0x7f68cbef38ed]
/usr/lib/x86_64-linux-gnu/libldap_r-2.4.so.2(+0x35965)[0x7f68cbef3965]
/usr/lib/x86_64-linux-gnu/libldap_r-2.4.so.2(+0x35a6d)[0x7f68cbef3a6d]
/usr/lib/x86_64-linux-gnu/libldap_r-2.4.so.2(ldap_int_tls_start+0x5d)[0x7f68cbef449d]
/lib/x86_64-linux-gnu/libnss_ldap.so.2(+0x4124)[0x7f68cc111124]
/lib/x86_64-linux-gnu/libnss_ldap.so.2(+0x4e81)[0x7f68cc111e81]
/lib/x86_64-linux-gnu/libnss_ldap.so.2(+0x6192)[0x7f68cc113192]
/lib/x86_64-linux-gnu/libnss_ldap.so.2(+0x7819)[0x7f68cc114819]
/lib/x86_64-linux-gnu/libnss_ldap.so.2(_nss_ldap_getpwnam_r+0x47)[0x7f68cc114db7]
/lib/x86_64-linux-gnu/libc.so.6(getpwnam_r+0xcd)[0x7f68ccac59ad]
/lib/x86_64-linux-gnu/libc.so.6(getpwnam+0x74)[0x7f68ccac5374]
id[0x40199a]
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xed)[0x7f68cca2876d]
id[0x401eb1]
======= Memory map: ========
00400000-00407000 r-xp 00000000 fc:00 154013 /usr/bin/id
00606000-00607000 r--p 00006000 fc:00 154013 /usr/bin/id
00607000-00608000 rw-p 00007000 fc:00 154013 /usr/bin/id
00972000-009b4000 rw-p 00000000 00:00 0 [heap]
7f68c7e70000-7f68c7e85000 r-xp 00000000 fc:00 131548 /lib/x86_64-linux-gnu/libgcc_s.so.1
7f68c7e85000-7f68c8084000 ---p 00015000 fc:00 131548 /lib/x86_64-linux-gnu/libgcc_s.so.1
7f68c8084000-7f68c8085000 r--p 00014000 fc:00 131548 /lib/x86_64-linux-gnu/libgcc_s.so.1
7f68c8085000-7f68c8086000 rw-p 00015000 fc:00 131548 /lib/x86_64-linux-gnu/libgcc_s.so.1
7f68c8086000-7f68c808d000 r-xp 00000000 fc:00 131744 /lib/x86_64-linux-gnu/libnss_dns-2.15.so
7f68c808d000-7f68c828c000 ---p 00007000 fc:00 131744 /lib/x86_64-linux-gnu/libnss_dns-2.15.so
7f68c828c000-7f68c828d000 r--p 00006000 fc:00 131744 /lib/x86_64-linux-gnu/libnss_dns-2.15.so
7f68c828d000-7f68c828e000 rw-p 00007000 fc:00 131744 /lib/x86_64-linux-gnu/libnss_dns-2.15.so
7f68c828e000-7f68c8297000 r-xp 00000000 fc:00 131736 /lib/x86_64-linux-gnu/libcrypt-2.15.so
7f68c8297000-7f68c8497000 ---p 00009000 fc:00 131736 /lib/x86_64-linux-gnu/libcrypt-2.15.so
7f68c8497000-7f68c8498000 r--p 00009000 fc:00 131736 /lib/x86_64-linux-gnu/libcrypt-2.15.so
7f68c8498000-7f68c8499000 rw-p 0000a000 fc:00 131736 /lib/x86_64-linux-gnu/libcrypt-2.15.so
7f68c8499000-7f68c84c7000 rw-p 00000000 00:00 0
7f68c84c7000-7f68c8565000 r-xp 00000000 fc:00 137002 /usr/lib/x86_64-linux-gnu/libsqlite3.so.0.8.6
7f68c8565000-7f68c8765000 ---p 0009e000 fc:00 137002 /usr/lib/x86_64-linux-gnu/libsqlite3.so.0.8.6
7f68c8765000-7f68c8767000 r--p 0009e000 fc:00 137002 /usr/lib/x86_64-linux-gnu/libsqlite3.so.0.8.6
7f68c8767000-7f68c8769000 rw-p 000a0000 fc:00 137002 /usr/lib/x86_64-linux-gnu/libsqlite3.so.0.8.6
7f68c8769000-7f68c876a000 rw-p 00000000 00:00 0
7f68c876a000-7f68c87af000 r-xp 00000000 fc:00 150487 /usr/lib/x86_64-linux-gnu/libhx509.so.5.0.0
7f68c87af000-7f68c89af000 ---p 00045000 fc:00 150487 /usr/lib/x86_64-linux-gnu/libhx509.so.5.0.0
7f68c89af000-7f68c89b1000 r--p 00045000 fc:00 150487 /usr/lib/x86_64-linux-gnu/libhx509.so.5.0.0
7f68c89b1000-7f68c89b3000 rw-p 00047000 fc:00 150487 /usr/lib/x86_64-linux-gnu/libhx509.so.5.0.0
7f68c89b3000-7f68c89b4000 rw-p 00000000 00:00 0
7f68c89b4000-7f68c89c2000 r-xp 00000000 fc:00 150481 /usr/lib/x86_64-linux-gnu/libheimbase.so.1.0.0
7f68c89c2000-7f68c8bc1000 ---p 0000e000 fc:00 150481 /usr/lib/x86_64-linux-gnu/libheimbase.so.1.0.0
7f68c8bc1000-7f68c8bc2000 r--p 0000d000 fc:00 150481 /usr/lib/x86_64-linux-gnu/libheimbase.so.1.0.0
7f68c8bc2000-7f68c8bc3000 rw-p 0000e000 fc:00 150481 /usr/lib/x86_64-linux-gnu/libheimbase.so.1.0.0
7f68c8bc3000-7f68c8beb000 r-xp 00000000 fc:00 150484 /usr/lib/x86_64-linux-gnu/libwind.so.0.0.0
7f68c8beb000-7f68c8dea000 ---p 00028000 fc:00 150484 /usr/lib/x86_64-linux-gnu/libwind.so.0.0.0
7f68c8dea000-7f68c8deb000 r--p 00027000 fc:00 150484 /usr/lib/x86_64-linux-gnu/libwind.so.0.0.0
7f68c8deb000-7f68c8dec000 rw-p 00028000 fc:00 150484 /usr/lib/x86_64-linux-gnu/libwind.so.0.0.0
7f68c8dec000-7f68c8def000 r-xp 00000000 fc:00 150466 /lib/x86_64-linux-gnu/libkeyutils.so.1.4
7f68c8def000-7f68c8fee000 ---p 00003000 fc:00 150466 /lib/x86_64-linux-gnu/libkeyutils.so.1.4
7f68c8fee000-7f68c8fef000 r--p 00002000 fc:00 150466 /lib/x86_64-linux-gnu/libkeyutils.so.1.4
7f68c8fef000-7f68c8ff0000 rw-p 00003000 fc:00 150466 /lib/x86_64-linux-gnu/libkeyutils.so.1.4
7f68c8ff0000-7f68c8ff3000 r-xp 00000000 fc:00 150450 /lib/x86_64-linux-gnu/libgpg-error.so.0.8.0
7f68c8ff3000-7f68c91f2000 ---p 00003000 fc:00 150450 /lib/x86_64-linux-gnu/libgpg-error.so.0.8.0
7f68c91f2000-7f68c91f3000 r--p 00002000 fc:00 150450 /lib/x86_64-linux-gnu/libgpg-error.so.0.8.0
7f68c91f3000-7f68c91f4000 rw-p 00003000 fc:00 150450 /lib/x86_64-linux-gnu/libgpg-error.so.0.8.0
7f68c91f4000-7f68c9205000 r-xp 00000000 fc:00 150454 /usr/lib/x86_64-linux-gnu/libp11-kit.so.0.0.0
7f68c9205000-7f68c9404000 ---p 00011000 fc:00 150454 /usr/lib/x86_64-linux-gnu/libp11-kit.so.0.0.0
7f68c9404000-7f68c9405000 r--p 00010000 fc:00 150454 /usr/lib/x86_64-linux-gnu/libp11-kit.so.0.0.0
7f68c9405000-7f68c9406000 rw-p 00011000 fc:00 150454 /usr/lib/x86_64-linux-gnu/libp11-kit.so.0.0.0
7f68c9406000-7f68c941c000 r-xp 00000000 fc:00 135677 /lib/x86_64-linux-gnu/libz.so.1.2.3.4
7f68c941c000-7f68c961b000 ---p 00016000 fc:00 135677 /lib/x86_64-linux-gnu/libz.so.1.2.3.4
7f68c961b000-7f68c961c000 r--p 00015000 fc:00 135677 /lib/x86_64-linux-gnu/libz.so.1.2.3.4
7f68c961c000-7f68c961d000 rw-p 00016000 fc:00 135677 /lib/x86_64-linux-gnu/libz.so.1.2.3.4
7f68c961d000-7f68c962d000 r-xp 00000000 fc:00 150456 /usr/lib/x86_64-linux-gnu/libtasn1.so.3.1.12
7f68c962d000-7f68c982c000 ---p 00010000 fc:00 150456 /usr/lib/x86_64-linux-gnu/libtasn1.so.3.1.12
Aborted (core dumped)
This is on Ubuntu 12.04.1.
libnss-ldap 264-2.2ubuntu2
nscd 2.15-0ubuntu010.3
When I was using libnss-ldapd with nslcd, I was getting the following
error (don't know if this is related, but seems like this is the same
lib that's failing?).
# service nslcd restart
* Restarting LDAP connection daemon nslcd nslcd: Warning: /lib/x86_64-linux-gnu/libnss_ldap.so.2: undefined symbol: _nss_ldap_enablelookups (probably older NSS module loaded)
[ OK ]
** Affects: libnss-ldap (Ubuntu)
Importance: Undecided
Status: New
--
id segfaults when looking up user information
https://bugs.launchpad.net/bugs/1090554
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