[Bug 593603] Re: automount segfault if get_query_dn fails
This bug was fixed in RHEL 5.5 as part of RHBA-2009:1468, why is this still not fixed in Ubuntu 10.04, nearly 2 years later? http://docs.redhat.com/docs/en- US/Red_Hat_Enterprise_Linux/5/html/5.5_Technical_Notes/autofs.html -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to autofs5 in ubuntu. https://bugs.launchpad.net/bugs/593603 Title: automount segfault if get_query_dn fails -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 593603] Re: automount segfault if get_query_dn fails
** Description changed:
Binary package hint: autofs5
# lsb_release -rd
Description: Ubuntu 10.04 LTS
Release: 10.04
# apt-cache policy autofs5
autofs5:
- Installed: 5.0.4-3.1ubuntu5
- Candidate: 5.0.4-3.1ubuntu5
- Version table:
- *** 5.0.4-3.1ubuntu5 0
- 500 http://gb.archive.ubuntu.com/ubuntu/ lucid/main Packages
- 100 /var/lib/dpkg/status
+ Installed: 5.0.4-3.1ubuntu5
+ Candidate: 5.0.4-3.1ubuntu5
+ Version table:
+ *** 5.0.4-3.1ubuntu5 0
+ 500 http://gb.archive.ubuntu.com/ubuntu/ lucid/main Packages
+ 100 /var/lib/dpkg/status
Possibly related to
https://bugs.launchpad.net/ubuntu/+source/autofs5/+bug/512595.
After upgrading 9.04 -> 10.04, my automounts from LDAP no longer appear.
Instead, I get the following in dmesg at the rate of one per second:
[ 62.189700] automount[5011]: segfault at 0 ip 7f956cb1c022 sp
7fff3cd1a978 error 4 in libc-2.11.1.so[7f956ca99000+178000]
[ 63.301490] automount[5023]: segfault at 0 ip 7f2de5007022 sp
7fff33695618 error 4 in libc-2.11.1.so[7f2de4f84000+178000]
[ 64.328963] automount[5038]: segfault at 0 ip 7fdc5f4b4022 sp
7fffb09a47a8 error 4 in libc-2.11.1.so[7fdc5f431000+178000]
...
I guess something is trying to repeatedly respawn automount. Here's a
couple of pointers for anyone trying to debug (sensitive info turned to
*):
# automount -dvf
Starting automounter version 5.0.4, master map /etc/auto.master
using kernel protocol version 5.01
lookup_nss_read_master: reading master file /etc/auto.master
parse_init: parse(sun): init gathered global options: (null)
lookup_read_master: lookup(file): read entry +auto.master
lookup_nss_read_master: reading master ldap auto.master
parse_server_string: lookup(ldap): Attempting to parse LDAP information from
string "auto.master".
parse_server_string: lookup(ldap): mapname auto.master
parse_ldap_config: lookup(ldap): ldap authentication configured with the
following options:
parse_ldap_config: lookup(ldap): use_tls: 0, tls_required: 0, auth_required:
1, sasl_mech: (null)
parse_ldap_config: lookup(ldap): user: (null), secret: unspecified, client
principal: (null) credential cache: (null)
find_server: trying server uri ldap://*
do_bind: lookup(ldap): auth_required: 1, sasl_mech (null)
do_bind: lookup(ldap): ldap anonymous bind returned 0
get_query_dn: lookup(ldap): check search base list
get_query_dn: lookup(ldap): query failed for search dn
ou=aufo.master,ou=autofs,dc=*,dc=*,dc=com: No such object
Segmentation fault (core dumped)
# strace automount -f 2>&1 | tail -n20
poll([{fd=7, events=POLLIN|POLLPRI|POLLERR|POLLHUP}], 1, -1) = 1 ([{fd=7,
revents=POLLIN}])
read(7, "0\f\2\1\1a\7\n", 8)= 8
read(7, "\1\0\4\0\4\0", 6) = 6
open("/etc/default/autofs", O_RDONLY) = 8
fcntl(8, F_SETFD, FD_CLOEXEC) = 0
fstat(8, {st_mode=S_IFREG|0644, st_size=3708, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x7fb316bc6000
read(8, "#\n# Define default options for a"..., 4096) = 3708
read(8, "", 4096) = 0
close(8)= 0
munmap(0x7fb316bc6000, 4096)= 0
write(7, "0\201\203\2\1\2c~\0045ou=aufo.master,ou=auto"..., 134) = 134
poll([{fd=7, events=POLLIN|POLLPRI|POLLERR|POLLHUP}], 1, -1) = 1 ([{fd=7,
revents=POLLIN}])
read(7, "02\2\1\2e-\n", 8) = 8
read(7, "\1 \4&ou=autofs,dc=*,dc=ac"..., 44) = 44
write(2, "get_query_dn: lookup(ldap): quer"..., 124get_query_dn:
lookup(ldap): query failed for search dn
ou=aufo.master,ou=autofs,dc=*,dc=*,dc=com: No such object) = 124
write(2, "\n", 1
) = 1
--- SIGSEGV (Segmentation fault) @ 0 (0) ---
+++ killed by SIGSEGV (core dumped) +++
--
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https://bugs.launchpad.net/bugs/593603
Title:
automount segfault if get_query_dn fails
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[Bug 593603] Re: automount segfault if get_query_dn fails
+1 to comment #7. If 'dmesg fills with segfaults and my machine becomes practically unusable' is low priority, I shudder to think what is high. -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to autofs5 in ubuntu. https://bugs.launchpad.net/bugs/593603 Title: automount segfault if get_query_dn fails -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 593603] Re: automount segfault if get_query_dn fails
Broken here also; I use some indirect LDAP mounts and some program mounts, and automount will even segfault on the program mounts if the LDAP entries for the indirect LDAP mounts cannot be resolved. This should *not* be low priority; in a production enterprise environment, if an LDAP server cannot be reached, *all* autofs functionality stops, rather than just the specific entries relating to that LDAP server. And everyone wonders why enterprise IT organizations don't take Ubuntu seriously. :-/ -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to autofs5 in ubuntu. https://bugs.launchpad.net/bugs/593603 Title: automount segfault if get_query_dn fails -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 593603] Re: automount segfault if get_query_dn fails
Thanks for the information, I should have enough to look at properly. chuck ** Changed in: autofs5 (Ubuntu) Status: Incomplete => Confirmed -- automount segfault if get_query_dn fails https://bugs.launchpad.net/bugs/593603 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to autofs5 in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 593603] Re: automount segfault if get_query_dn fails
Here's my nsswitch.conf ** Attachment added: "nsswitch.conf" https://bugs.launchpad.net/ubuntu/+source/autofs5/+bug/593603/+attachment/1539622/+files/nsswitch.conf -- automount segfault if get_query_dn fails https://bugs.launchpad.net/bugs/593603 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to autofs5 in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 593603] Re: automount segfault if get_query_dn fails
Thanks what does your nsswitch.conf look like? chuck -- automount segfault if get_query_dn fails https://bugs.launchpad.net/bugs/593603 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to autofs5 in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 593603] Re: automount segfault if get_query_dn fails
Here's the gdb transcript, potentially sensitive info eliminated. I followed the instructions to get debug symbols, but gdb still says Reading symbols from /usr/lib/debug/usr/sbin/automount...(no debugging symbols found) (the file does exist). ** Attachment added: "gdb transcript" http://launchpadlibrarian.net/51233464/gdb-automount.txt -- automount segfault if get_query_dn fails https://bugs.launchpad.net/bugs/593603 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to autofs5 in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 593603] Re: automount segfault if get_query_dn fails
Thank you for taking the time to report this bug and helping to make Ubuntu better. Please try to obtain a backtrace following the instructions at http://wiki.ubuntu.com/DebuggingProgramCrash and upload the backtrace (as an attachment) to the bug report. This will greatly help us in tracking down your problem. ** Changed in: autofs5 (Ubuntu) Importance: Undecided => Low ** Changed in: autofs5 (Ubuntu) Status: New => Incomplete -- automount segfault if get_query_dn fails https://bugs.launchpad.net/bugs/593603 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to autofs5 in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
