[Bug 805937] Re: smbd segfaults at least twice a day
niallm90
805937 at bugs.launchpad.net
Sun Aug 7 12:55:45 UTC 2011
I all so appear to be getting this error. I have enabled 'debug level =
3' in my smb.conf so am waiting for another error to get some more
information. It happens a random amount of times a day. It appears to
happen when you connect to a share or try to open a file on the share. I
have only experienced the problem on Windows 7 client but I don't access
the share often from Ubuntu clients.
smb.conf - (with out comments)
-----------------------------------------------------------------------------------
[global]
workgroup = WORKGROUP
server string = %h server (Samba, Ubuntu)
dns proxy = no
follow symlinks=yes
unix extensions = no
debug level = 3
log file = /var/log/samba/log.%m
max log size = 1000
syslog = 0
panic action = /usr/share/samba/panic-action %d
encrypt passwords = true
passdb backend = tdbsam
obey pam restrictions = yes
unix password sync = yes
passwd program = /usr/bin/passwd %u
passwd chat = *Enter\snew\s*\spassword:* %n\n *Retype\snew\s*\spassword:* %n\n *password\supdated\ssuccessfully* .
pam password change = yes
map to guest = bad user
usershare allow guests = yes
-----------------------------------------------------------------------------------
lsb_release -rd
-----------------------------------------------------------------------------------
Description: Ubuntu 11.04
Release: 11.04
-----------------------------------------------------------------------------------
uname -a
-----------------------------------------------------------------------------------
Linux niall-desktop 2.6.38-11-generic #48-Ubuntu SMP Fri Jul 29 19:02:55 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux
-----------------------------------------------------------------------------------
apt-cache policy samba
-----------------------------------------------------------------------------------
samba:
Installed: 2:3.5.8~dfsg-1ubuntu2.3
Candidate: 2:3.5.8~dfsg-1ubuntu2.3
Version table:
*** 2:3.5.8~dfsg-1ubuntu2.3 0
500 http://ucmirror.canterbury.ac.nz/ubuntu/ natty-security/main amd64 Packages
100 /var/lib/dpkg/status
2:3.5.8~dfsg-1ubuntu2 0
500 http://ucmirror.canterbury.ac.nz/ubuntu/ natty/main amd64 Packages
-----------------------------------------------------------------------------------
-----------------------------------------------------------------------------------
[Thread debugging using libthread_db enabled]
0x00007fd99f6b01ae in waitpid () from /lib/x86_64-linux-gnu/libc.so.6
#0 0x00007fd99f6b01ae in waitpid () from /lib/x86_64-linux-gnu/libc.so.6
#1 0x00007fd99f644d6e in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#2 0x00007fd9a2595c53 in smb_panic (why=<value optimized out>) at lib/util.c:1471
#3 0x00007fd9a25852e9 in fault_report (sig=11) at lib/fault.c:52
#4 sig_fault (sig=11) at lib/fault.c:75
#5 <signal handler called>
#6 0x00007fd99f6855d1 in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#7 0x00007fd9a256c11e in rep_strlcpy (d=0x7fff506b6ff8 "", s=0x0, bufsize=256) at ../lib/replace/replace.c:69
#8 0x00007fd9a25a2434 in connections_fetch_entry (mem_ctx=0x0, conn=0x7fd9a3657150, name=0x0) at lib/conn_tdb.c:65
#9 0x00007fd9a2323676 in yield_connection (conn=0x7fd9a3657150, name=0x0) at smbd/connection.c:33
#10 0x00007fd9a23947f6 in close_cnum (conn=0x7fd9a3657150, vuid=100) at smbd/service.c:1256
#11 0x00007fd9a235016d in reply_tdis (req=0x7fd9a3650910) at smbd/reply.c:4912
#12 0x00007fd9a238fbb5 in switch_message (type=113 'q', req=0x7fd9a3650910, size=39) at smbd/process.c:1404
#13 0x00007fd9a238ff57 in construct_reply (inbuf=<value optimized out>, nread=39, unread_bytes=0, seqnum=0, encrypted=false, deferred_pcd=0x0, conn=<value optimized out>) at smbd/process.c:1436
#14 process_smb (inbuf=<value optimized out>, nread=39, unread_bytes=0, seqnum=0, encrypted=false, deferred_pcd=0x0, conn=<value optimized out>) at smbd/process.c:1509
#15 0x00007fd9a23903da in smbd_server_connection_read_handler (ev=<value optimized out>, fde=<value optimized out>, flags=<value optimized out>, private_data=<value optimized out>) at smbd/process.c:2126
#16 smbd_server_connection_handler (ev=<value optimized out>, fde=<value optimized out>, flags=<value optimized out>, private_data=<value optimized out>) at smbd/process.c:2141
#17 0x00007fd9a25a5303 in run_events (ev=0x7fd9a355e430, selrtn=1, read_fds=0x7fff506b7470, write_fds=0x7fff506b73f0) at lib/events.c:157
#18 0x00007fd9a2391936 in smbd_server_connection_loop_once () at smbd/process.c:844
#19 smbd_process () at smbd/process.c:2455
#20 0x00007fd9a289091e in smbd_accept_connection (ev=<value optimized out>, fde=<value optimized out>, flags=<value optimized out>, private_data=<value optimized out>) at smbd/server.c:438
#21 0x00007fd9a25a5303 in run_events (ev=0x7fd9a355e430, selrtn=1, read_fds=0x7fff506b7790, write_fds=0x7fff506b7710) at lib/events.c:157
#22 0x00007fd9a25a54f8 in s3_event_loop_once (ev=0x7fd9a355e430, location=<value optimized out>) at lib/events.c:220
#23 0x00007fd9a25a5f90 in _tevent_loop_once (ev=0x7fd9a355e430, location=0x7fd9a2a970c8 "smbd/server.c:726") at ../lib/tevent/tevent.c:497
#24 0x00007fd9a28915c3 in smbd_parent_loop (argc=<value optimized out>, argv=<value optimized out>) at smbd/server.c:726
#25 main (argc=<value optimized out>, argv=<value optimized out>) at smbd/server.c:1316
A debugging session is active.
Inferior 1 [process 7823] will be detached.
Quit anyway? (y or n) [answered Y; input not from terminal]
-----------------------------------------------------------------------------------
--
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to samba in Ubuntu.
https://bugs.launchpad.net/bugs/805937
Title:
smbd segfaults at least twice a day
Status in “samba” package in Ubuntu:
Confirmed
Bug description:
The Samba 'panic action' script, /usr/share/samba/panic-action,
was called for PID 4493 (/usr/sbin/smbd).
This means there was a problem with the program, such as a segfault.
Below is a backtrace for this process generated with gdb, which shows
the state of the program at the time the error occurred. The Samba log
files may contain additional information about the problem.
If the problem persists, you are encouraged to first install the
samba-dbg package, which contains the debugging symbols for the Samba
binaries. Then submit the provided information as a bug report to
Ubuntu by visiting this link:
https://launchpad.net/ubuntu/+source/samba/+filebug
[Thread debugging using libthread_db enabled]
0x00007fb0a3ecedee in waitpid () from /lib/libc.so.6
#0 0x00007fb0a3ecedee in waitpid () from /lib/libc.so.6
#1 0x00007fb0a3e66a79 in ?? () from /lib/libc.so.6
#2 0x00007fb0a6da39b4 in smb_panic (why=<value optimized out>) at lib/util.c:1471
#3 0x00007fb0a6d9328d in fault_report (sig=11) at lib/fault.c:52
#4 sig_fault (sig=11) at lib/fault.c:75
#5 <signal handler called>
#6 0x00007fb0a3ea7e52 in ?? () from /lib/libc.so.6
#7 0x00007fb0a6d7981e in rep_strlcpy (d=0x7fffe1373d28 "", s=0x0, bufsize=256) at ../lib/replace/replace.c:69
#8 0x00007fb0a6db0494 in connections_fetch_entry (mem_ctx=0x0, conn=0x7fb0a8dd9770, name=0x0) at lib/conn_tdb.c:65
#9 0x00007fb0a6b2d666 in yield_connection (conn=0x7fb0a8dd9770, name=0x0) at smbd/connection.c:33
#10 0x00007fb0a6b9b496 in close_cnum (conn=0x7fb0a8dd9770, vuid=100) at smbd/service.c:1256
#11 0x00007fb0a6b34d1c in conn_close_all (sconn=<value optimized out>) at smbd/conn.c:185
#12 0x00007fb0a709ed25 in exit_server_common (how=SERVER_EXIT_NORMAL, reason=0x7fb0a70c9047 "failed to receive smb request") at smbd/server.c:852
#13 0x00007fb0a709ef4e in exit_server_cleanly (explanation=0x0) at smbd/server.c:931
#14 0x00007fb0a6b9a8ab in smbd_server_connection_read_handler (ev=<value optimized out>, fde=<value optimized out>, flags=<value optimized out>, private_data=<value optimized out>) at smbd/process.c:2115
#15 smbd_server_connection_handler (ev=<value optimized out>, fde=<value optimized out>, flags=<value optimized out>, private_data=<value optimized out>) at smbd/process.c:2137
#16 0x00007fb0a6db3422 in run_events (ev=0x7fb0a8d21430, selrtn=1, read_fds=0x7fffe1374120, write_fds=0x7fffe13740a0) at lib/events.c:156
#17 0x00007fb0a6b995f0 in smbd_server_connection_loop_once () at smbd/process.c:840
#18 smbd_process () at smbd/process.c:2451
#19 0x00007fb0a709f1ee in smbd_accept_connection (ev=<value optimized out>, fde=<value optimized out>, flags=<value optimized out>, private_data=<value optimized out>) at smbd/server.c:438
#20 0x00007fb0a6db3422 in run_events (ev=0x7fb0a8d21430, selrtn=1, read_fds=0x7fffe1374430, write_fds=0x7fffe13743b0) at lib/events.c:156
#21 0x00007fb0a6db36e1 in s3_event_loop_once (ev=0x7fb0a8d21430, location=<value optimized out>) at lib/events.c:219
#22 0x00007fb0a6db3ac0 in _tevent_loop_once (ev=0x7fb0a8d21430, location=0x7fb0a72a5658 "smbd/server.c:726") at ../lib/tevent/tevent.c:497
#23 0x00007fb0a709fed3 in smbd_parent_loop (argc=<value optimized out>, argv=0x7fffe13747b0) at smbd/server.c:726
#24 main (argc=<value optimized out>, argv=0x7fffe13747b0) at smbd/server.c:1316
A debugging session is active.
Inferior 1 [process 4493] will be detached.
Quit anyway? (y or n) [answered Y; input not from terminal]
------------------------------------------------------------------------------------------------------------
:~$ lsb_release -rd
Description: Ubuntu 10.10
Release: 10.10
:~$ apt-cache policy samba
samba:
Installed: 2:3.5.4~dfsg-1ubuntu8.4
Candidate: 2:3.5.4~dfsg-1ubuntu8.4
Version table:
*** 2:3.5.4~dfsg-1ubuntu8.4 0
500 http://us.archive.ubuntu.com/ubuntu/ maverick-updates/main amd64 Packages
100 /var/lib/dpkg/status
2:3.5.4~dfsg-1ubuntu8.3 0
500 http://security.ubuntu.com/ubuntu/ maverick-security/main amd64 Packages
2:3.5.4~dfsg-1ubuntu8 0
500 http://us.archive.ubuntu.com/ubuntu/ maverick/main amd64 Packages
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