"apt-get update" crashes

[Ulli Horlacher]

This is on Ubuntu 10.04

After the last uprade, apt-get crashes with:

root@zoo:~# apt-get update
0% [Working]*** glibc detected *** /usr/lib/apt/methods/http: munmap_chunk(): invalid pointer: 0x00007f2ee7e963f0 ***
======= Backtrace: =========
/lib/libc.so.6(+0x78cc6)[0x7f2ee6fcccc6]
/lib/libc.so.6(+0x125ec9)[0x7f2ee7079ec9]
/lib/libc.so.6(+0x12628b)[0x7f2ee707a28b]
/lib/libc.so.6(getservbyname_r+0x183)[0x7f2ee705cde3]
/lib/libc.so.6(+0xb9ff2)[0x7f2ee700dff2]
/lib/libc.so.6(+0xbad50)[0x7f2ee700ed50]
/lib/libc.so.6(getaddrinfo+0x162)[0x7f2ee70118f2]
/usr/lib/apt/methods/http[0x40b337]
/usr/lib/apt/methods/http[0x406748]
/usr/lib/apt/methods/http[0x407d39]
/usr/lib/apt/methods/http[0x40a0cb]
/lib/libc.so.6(__libc_start_main+0xfd)[0x7f2ee6f72cad]
/usr/lib/apt/methods/http[0x4041c9]
======= Memory map: ========
00400000-0040e000 r-xp 00000000 08:01 656796 /usr/lib/apt/methods/http
0060d000-0060e000 r--p 0000d000 08:01 656796 /usr/lib/apt/methods/http
0060e000-0060f000 rw-p 0000e000 08:01 656796 /usr/lib/apt/methods/http
0060f000-00630000 rw-p 00000000 00:00 0 [heap]
7f2ee6b4d000-7f2ee6b4f000 r-xp 00000000 08:01 396191 /lib/libdl-2.11.1.so
7f2ee6b4f000-7f2ee6d4f000 ---p 00002000 08:01 396191 /lib/libdl-2.11.1.so
7f2ee6d4f000-7f2ee6d50000 r--p 00002000 08:01 396191 /lib/libdl-2.11.1.so
7f2ee6d50000-7f2ee6d51000 rw-p 00003000 08:01 396191 /lib/libdl-2.11.1.so
7f2ee6d51000-7f2ee6d53000 r-xp 00000000 08:01 396199 /lib/libutil-2.11.1.so
7f2ee6d53000-7f2ee6f52000 ---p 00002000 08:01 396199 /lib/libutil-2.11.1.so
7f2ee6f52000-7f2ee6f53000 r--p 00001000 08:01 396199 /lib/libutil-2.11.1.so
7f2ee6f53000-7f2ee6f54000 rw-p 00002000 08:01 396199 /lib/libutil-2.11.1.so
7f2ee6f54000-7f2ee70d3000 r-xp 00000000 08:01 396200 /lib/libc-2.11.1.so
7f2ee70d3000-7f2ee72d3000 ---p 0017f000 08:01 396200 /lib/libc-2.11.1.so
7f2ee72d3000-7f2ee72d7000 r--p 0017f000 08:01 396200 /lib/libc-2.11.1.so
7f2ee72d7000-7f2ee72d8000 rw-p 00183000 08:01 396200 /lib/libc-2.11.1.so
7f2ee72d8000-7f2ee72dd000 rw-p 00000000 00:00 0
7f2ee72dd000-7f2ee72f3000 r-xp 00000000 08:01 392455 /lib/libgcc_s.so.1
7f2ee72f3000-7f2ee74f2000 ---p 00016000 08:01 392455 /lib/libgcc_s.so.1
7f2ee74f2000-7f2ee74f3000 r--p 00015000 08:01 392455 /lib/libgcc_s.so.1
7f2ee74f3000-7f2ee74f4000 rw-p 00016000 08:01 392455 /lib/libgcc_s.so.1
7f2ee74f4000-7f2ee7576000 r-xp 00000000 08:01 396194 /lib/libm-2.11.1.so
7f2ee7576000-7f2ee7775000 ---p 00082000 08:01 396194 /lib/libm-2.11.1.so
7f2ee7775000-7f2ee7776000 r--p 00081000 08:01 396194 /lib/libm-2.11.1.so
7f2ee7776000-7f2ee7777000 rw-p 00082000 08:01 396194 /lib/libm-2.11.1.so
7f2ee7777000-7f2ee786d000 r-xp 00000000 08:01 655632 /usr/lib/libstdc++.so.6.0.13
7f2ee786d000-7f2ee7a6d000 ---p 000f6000 08:01 655632 /usr/lib/libstdc++.so.6.0.13
7f2ee7a6d000-7f2ee7a74000 r--p 000f6000 08:01 655632 /usr/lib/libstdc++.so.6.0.13
7f2ee7a74000-7f2ee7a76000 rw-p 000fd000 08:01 655632 /usr/lib/libstdc++.so.6.0.13
7f2ee7a76000-7f2ee7a8b000 rw-p 00000000 00:00 0
7f2ee7a8b000-7f2ee7b50000 r-xp 00000000 08:01 656789 /usr/lib/libapt-pkg-libc6.10-6.so.4.8.0
7f2ee7b50000-7f2ee7d50000 ---p 000c5000 08:01 656789 /usr/lib/libapt-pkg-libc6.10-6.so.4.8.0
7f2ee7d50000-7f2ee7d53000 r--p 000c5000 08:01 656789 /usr/lib/libapt-pkg-libc6.10-6.so.4.8.0
7f2ee7d53000-7f2ee7d54000 rw-p 000c8000 08:01 656789 /usr/lib/libapt-pkg-libc6.10-6.so.4.8.0
7f2ee7d54000-7f2ee7d74000 r-xp 00000000 08:01 394878 /lib/ld-2.11.1.so
7f2ee7e96000-7f2ee7f1e000 r--s 00000000 08:01 915774 /var/cache/nscd/services
7f2ee7f1e000-7f2ee7f55000 r--p 00000000 08:01 665873 /usr/lib/locale/en_US.iso885915/LC_CTYPE
7f2ee7f55000-7f2ee7f56000 r--p 00000000 08:01 665874 /usr/lib/locale/en_US.iso885915/LC_NUMERIC
7f2ee7f56000-7f2ee7f57000 r--p 00000000 08:01 920348 /usr/lib/locale/en_DK.utf8/LC_TIME
7f2ee7f57000-7f2ee7f5d000 r--p 00000000 08:01 665876 /usr/lib/locale/en_US.iso885915/LC_COLLATE
7f2ee7f5d000-7f2ee7f5e000 r--p 00000000 08:01 665879 /usr/lib/locale/en_US.iso885915/LC_MONETARY
7f2ee7f5e000-7f2ee7f63000 rw-p 00000000 00:00 0
7f2ee7f63000-7f2ee7f64000 r--p 00000000 08:01 665881 /usr/lib/locale/en_US.iso885915/LC_MESSAGES/SYS_LC_MESSAGES
7f2ee7f64000-7f2ee7f65000 r--p 00000000 08:01 665882 /usr/lib/locale/en_US.iso885915/LC_PAPER
7f2ee7f65000-7f2ee7f66000 r--p 00000000 08:01 665883 /usr/lib/locale/en_US.iso885915/LC_NAME
7f2ee7f66000-7f2ee7f67000 r--p 00000000 08:01 665884 /usr/lib/locale/en_US.iso885915/LC_ADDRESS
7f2ee7f67000-7f2ee7f68000 r--p 00000000 08:01 665886 /usr/lib/locale/en_US.iso885915/LC_TELEPHONE
7f2ee7f68000-7f2ee7f69000 r--p 00000000 08:01 665887 /usr/lib/locale/en_US.iso885915/LC_MEASUREMENT
7f2ee7f69000-7f2ee7f70000 r--s 00000000 08:01 657473 /usr/lib/gconv/gconv-modules.cache
7f2ee7f70000-7f2ee7f71000 r--p 00000000 08:01 665889 /usr/lib/locale/en_US.iso885915/LC_IDENTIFICATION
7f2ee7f71000-7f2ee7f73000 rw-p 00000000 00:00 0
7f2ee7f73000-7f2ee7f74000 r--p 0001f000 08:01 394878 /lib/ld-2.11.1.so
7f2ee7f74000-7f2ee7f75000 rw-p 00020000 08:01 394878 /lib/ld-2.11.1.so
7f2ee7f75000-7f2ee7f76000 rw-p 00000000 00:00 0
7fffaa099000-7fffaa0ba000 rw-p 00000000 00:00 0 [stack]
7fffaa190000-7fffaa191000 r-xp 00000000 00:00 0 [vdso]
ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0 [vsyscall]
*** glibc detected *** /usr/lib/apt/methods/http: munmap_chunk(): invalid pointer: 0x00007f1293b7a3f0 ***
======= Backtrace: =========
/lib/libc.so.6(+0x78cc6)[0x7f1292cb0cc6]
/lib/libc.so.6(+0x125ec9)[0x7f1292d5dec9]
/lib/libc.so.6(+0x12628b)[0x7f1292d5e28b]
/lib/libc.so.6(getservbyname_r+0x183)[0x7f1292d40de3]
/lib/libc.so.6(+0xb9ff2)[0x7f1292cf1ff2]
/lib/libc.so.6(+0xbad50)[0x7f1292cf2d50]
/lib/libc.so.6E: Method http has died unexpectedly!
E: Sub-process http received signal 6.

More system information:

root@zoo:~# uname -a
Linux zoo 2.6.38-16-server #67~lucid1-Ubuntu SMP Fri Sep 7 18:36:10 UTC 2012 x86_64 GNU/Linux

root@zoo:~# lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 10.04.4 LTS
Release: 10.04
Codename: lucid

root@zoo:~# apt-cache policy apt
apt:
  Installed: 0.7.25.3ubuntu9.15
  Candidate: 0.7.25.3ubuntu9.15
  Version table:
 *** 0.7.25.3ubuntu9.15 0
        500 http://ftp.uni-stuttgart.de/ubuntu/ lucid-updates/main Packages
        500 http://security.ubuntu.com/ubuntu/ lucid-security/main Packages
        100 /var/lib/dpkg/status
     0.7.25.3ubuntu7 0
        500 http://ftp.uni-stuttgart.de/ubuntu/ lucid/main Packages

root@zoo:~# apt-cache policy libc6
libc6:
  Installed: 2.11.1-0ubuntu7.14
  Candidate: 2.11.1-0ubuntu7.14
  Version table:
 *** 2.11.1-0ubuntu7.14 0
        500 http://ftp.uni-stuttgart.de/ubuntu/ lucid-updates/main Packages
        500 http://security.ubuntu.com/ubuntu/ lucid-security/main Packages
        100 /var/lib/dpkg/status
     2.11.1-0ubuntu7 0
        500 http://ftp.uni-stuttgart.de/ubuntu/ lucid/main Packages

[Ulli Horlacher (framstag)]

Forgot to mention: a reboot does not fix it.

[Ulli Horlacher (framstag)]

Also, "apt-get install ...." crashes the same way: I cannot install or upgrade anymore anything!

[Scott Balneaves (sbalneav)]

I have been bitten by the same bug. I can fix it by grabbing an older copy of libc6 and libc-bin and reinstalling them. Specifically, downgrading from libc6_2.11.1-0ubuntu7.14_amd64.deb and libc-bin_2.11.1-0ubuntu7.14_amd64.deb to

libc6_2.11.1-0ubuntu7.13_amd64.deb and libc-bin_2.11.1-0ubuntu7.13_amd64.deb

Fixes the problem. Looks like libc6 2.11.1-0ubuntu14 has a problem.

[Ulli Horlacher (framstag)]

It seems it is a glibc bug:
https://bugs.launchpad.net/ubuntu/+source/eglibc/+bug/1352504

A workaround (for me) is to deactivate nscd with:
/etc/init.d/nscd stop

Now "apt-get update" is working again.

[BUGgs (buggsfr)]

I confirm the bug and the workaround also here. stopping nscd fixed the issue temporary.
Same version.
This bug has blocked also PHP from working on my servers... (workaround in making it work again)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Scott Balneaves (sbalneav)]

I can't stop nscd, since we use LDAP for auth and nss services, so downgrading to the older libc6 works. Looks like a patch is in the works.

[garyo (garyo)]

I confirm the bug, and the nscd temp workaround. Same version. Wow, how'd you figure out that stopping nscd would help?

For me, apt-get update/upgrade after stopping nscd fixes it permanently. There must have been a libc patch between when this was filed and now.