[Bug 1638345] Re: avahi-daemon crashes multiple times an hour

[Nienke B]

Hi @lathiat, 
just want to confirm that for me the issue was solved by commenting out 
rlimit-data and rlimit-stack. I had solved it ages ago using this thread above, 
and had completely forgotten about it. I was reminded of the issue as my 
computer was updating (and asking about this conf file), so just wanted to 
report now. Thanks a lot - the issue had been causing me headaches for ages. 

As to the avahi-browse: I get 0 lines.

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[Bug 1638345] Re: avahi-daemon crashes multiple times an hour

[Trent Lloyd]

@jecs Thanks for the feedback; I am curious.. how many service do you
have on your network?

If you run "avahi-browse -a -t|wc -l" -- how many lines do you have?

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[Bug 1638345] Re: avahi-daemon crashes multiple times an hour

[Jose Serralles]

Hi, Trent.

I upgraded the avahi packages with apt
and replaced the configuration file that
I had edited with the file supplied by the
package. Everything works as intended.

Thank you!

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[Bug 1638345] Re: avahi-daemon crashes multiple times an hour

[Trent Lloyd]

This bug was fixed in the package avahi for trusty, xenial and artful.
bionic is not affected by this issue.

xenial: 0.6.32~rc+dfsg-1ubuntu2.1
trusty: 0.6.31-4ubuntu1.2

Would be great if the various people affected by this could confirm they
no longer hit the issue.

** Changed in: avahi (Ubuntu)
   Status: Confirmed => Fix Released

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[Bug 1638345] Re: avahi-daemon crashes multiple times an hour

[Jose Serralles]

Thank you, Trent. I commented out the rlimits section and restarted
avahi-daemon. I'll let you know if the fix doesn't work or if it
introduces any bugs.

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[Bug 1638345] Re: avahi-daemon crashes multiple times an hour

[Trent Lloyd]

I have updated Bug #1661869 with an SRU template and new updates to fix
this issue, plus the issue in that bug.

The fix is simply to update /etc/avahi/avahi-daemon.conf and comment out
the entire [rlimits] section.  You can do this yourself (but the package
update will do it for you).

It'd be great if you can try this fix yourself and report back on if
that fixes the issue for you, if not, please consider opening a new bug
using apport.

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[Bug 1638345] Re: avahi-daemon crashes multiple times an hour

[Trent Lloyd]

** Changed in: avahi (Ubuntu)
 Assignee: (unassigned) => Trent Lloyd (lathiat)

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[Bug 1638345] Re: avahi-daemon crashes multiple times an hour

[Jose Serralles]

Why was this task "unassigned"? This issue still affects me and many
others.

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[Bug 1638345] Re: avahi-daemon crashes multiple times an hour

[Sebastien Bacher]

** Changed in: avahi (Ubuntu)
 Assignee: FanJun Kong - ( BH1SCW ) (fjkong) => (unassigned)

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[Bug 1638345] Re: avahi-daemon crashes multiple times an hour

[Trent Lloyd]

[rlimits] is the correct section

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[Bug 1638345] Re: avahi-daemon crashes multiple times an hour

[Trent Lloyd]

Created patch for this problem, am handling the SRU process in the
following bug as effectively the same fix for both issues.

https://bugs.launchpad.net/ubuntu/+source/avahi/+bug/1661869

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[Bug 1638345] Re: avahi-daemon crashes multiple times an hour

[graingert]

@lathiat I have no [limits] section in my  /etc/avahi/avahi-daemon.conf
do you mean [rlimits] ?

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[Bug 1638345] Re: avahi-daemon crashes multiple times an hour

[Trent Lloyd]

Workaround is to edit /etc/avahi/avahi-daemon.conf and comment out the
entire [limits] section or at least the rlimit-data and rlimit-stack
sections

I hope to push out an update for this

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[Bug 1638345] Re: avahi-daemon crashes multiple times an hour

[Tessa]

I haven't seen a workaround yet.

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[Bug 1638345] Re: avahi-daemon crashes multiple times an hour

[Raffi Khatchadourian]

Is there a workaround for the problem?

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[Bug 1638345] Re: avahi-daemon crashes multiple times an hour

[zwigno]

Update - I see this in dmesg, "mmap: avahi-daemon (1269): VmData 4304896
exceed data ulimit 4194304. Update limits or use boot option
ignore_rlimit_data."

Also, when I click on "Report Problem" nothing happens.

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[Bug 1638345] Re: avahi-daemon crashes multiple times an hour

[zwigno]

This just started happening to me after I joined a WPA2 Enterprise Wifi
network.  I am using TLS auth.  I'm NOT using MSCHAPv2. 16.10.

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[Bug 1638345] Re: avahi-daemon crashes multiple times an hour

[Tessa]

Spoke too soon, definitely just encountered the 100% CPU / nonfunctional
avahi-daemon problem that precludes the crash, on 17.04. So it's still
an issue.

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[Bug 1638345] Re: avahi-daemon crashes multiple times an hour

[Tessa]

Note that so far I haven't seen this since upgrading to 17.04, but I'm
keeping an eye on it.

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[Bug 1638345] Re: avahi-daemon crashes multiple times an hour

[Claudio de Souza]

I am having the same problem.

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[Bug 1638345] Re: avahi-daemon crashes multiple times an hour

[Martin Mach]

Same here - the problem occurred several times. Fresh install didn't
solve it though. I can confirm that it happens probably only on MSCHAPv2
WiFi networks.

16.10, 4.8.0-39-generic.

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[Bug 1638345] Re: avahi-daemon crashes multiple times an hour

[Andrew1421lee]

16.10 Fresh install, Kernel 4.8.0-39.

Crashes when connected to MSCHAPv2 networks

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[Bug 1638345] Re: avahi-daemon crashes multiple times an hour

[Will]

Fresh 16.04 Install.

Reported OOPS ID f6e4ac20-e755-11e6-8ae9-fa163ebeb28a

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[Bug 1638345] Re: avahi-daemon crashes multiple times an hour

[Thomas Krause]

I might have the same issue, but I also have an error message in dmesg:

[ 1522.851014] mmap: avahi-daemon (1108): VmData 4284416 exceed data
ulimit 4194304. Update limits or use boot option ignore_rlimit_data.

and also an out of memory message in the syslog:

Jan 27 15:11:49 tk-xps avahi-daemon[12690]: Interface enx18dbf2667a17.IPv4 no 
longer relevant for mDNS.
Jan 27 15:14:24 tk-xps avahi-daemon[12690]: Out of memory, aborting ...

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[Bug 1638345] Re: avahi-daemon crashes multiple times an hour

[Tessa]

I have never done any manual Avahi configuration, and this is a fresh
install of Ubuntu 16.10 on my new Macbook Pro. Where do the valgrind
logs live?

Also, it's doing the 100% cpu thing right now, so bt is below. Note
there's a lot of missing debugging symbols, but I don't see any -dbg
packages for libavahi or similar. If you can suggest how to get these
debugging symbols installed, I imagine it'll make the backtrace more
illuminating:


$ sudo gdb -p 12169
GNU gdb (Ubuntu 7.11.90.20161005-0ubuntu1) 7.11.90.20161005-git
Copyright (C) 2016 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later 
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
.
Find the GDB manual and other documentation resources online at:
.
For help, type "help".
Type "apropos word" to search for commands related to "word".
Attaching to process 12169
Reading symbols from /usr/sbin/avahi-daemon...(no debugging symbols 
found)...done.
Reading symbols from /usr/lib/x86_64-linux-gnu/libavahi-common.so.3...(no 
debugging symbols found)...done.
Reading symbols from /usr/lib/x86_64-linux-gnu/libavahi-core.so.7...(no 
debugging symbols found)...done.
Reading symbols from /usr/lib/x86_64-linux-gnu/libdaemon.so.0...(no debugging 
symbols found)...done.
Reading symbols from /lib/x86_64-linux-gnu/libexpat.so.1...(no debugging 
symbols found)...done.
Reading symbols from /lib/x86_64-linux-gnu/libcap.so.2...(no debugging symbols 
found)...done.
Reading symbols from /lib/x86_64-linux-gnu/libdl.so.2...Reading symbols from 
/usr/lib/debug//lib/x86_64-linux-gnu/libdl-2.24.so...done.
done.
Reading symbols from /lib/x86_64-linux-gnu/libdbus-1.so.3...(no debugging 
symbols found)...done.
Reading symbols from /lib/x86_64-linux-gnu/libpthread.so.0...Reading symbols 
from 
/usr/lib/debug/.build-id/71/b2c79a4defc42524ea7e564173f0b65fe89010.debug...done.
done.
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Reading symbols from /lib/x86_64-linux-gnu/libc.so.6...Reading symbols from 
/usr/lib/debug//lib/x86_64-linux-gnu/libc-2.24.so...done.
done.
Reading symbols from /lib64/ld-linux-x86-64.so.2...Reading symbols from 
/usr/lib/debug//lib/x86_64-linux-gnu/ld-2.24.so...done.
done.
Reading symbols from /lib/x86_64-linux-gnu/libsystemd.so.0...(no debugging 
symbols found)...done.
Reading symbols from /lib/x86_64-linux-gnu/libselinux.so.1...(no debugging 
symbols found)...done.
Reading symbols from /lib/x86_64-linux-gnu/librt.so.1...Reading symbols from 
/usr/lib/debug//lib/x86_64-linux-gnu/librt-2.24.so...done.
done.
Reading symbols from /lib/x86_64-linux-gnu/liblzma.so.5...(no debugging symbols 
found)...done.
Reading symbols from /lib/x86_64-linux-gnu/libgcrypt.so.20...(no debugging 
symbols found)...done.
Reading symbols from /lib/x86_64-linux-gnu/libpcre.so.3...(no debugging symbols 
found)...done.
Reading symbols from /lib/x86_64-linux-gnu/libgpg-error.so.0...(no debugging 
symbols found)...done.
Reading symbols from /lib/x86_64-linux-gnu/libnss_compat.so.2...Reading symbols 
from /usr/lib/debug//lib/x86_64-linux-gnu/libnss_compat-2.24.so...done.
done.
Reading symbols from /lib/x86_64-linux-gnu/libnsl.so.1...Reading symbols from 
/usr/lib/debug//lib/x86_64-linux-gnu/libnsl-2.24.so...done.
done.
Reading symbols from /lib/x86_64-linux-gnu/libnss_nis.so.2...Reading symbols 
from /usr/lib/debug//lib/x86_64-linux-gnu/libnss_nis-2.24.so...done.
done.
Reading symbols from /lib/x86_64-linux-gnu/libnss_files.so.2...Reading symbols 
from /usr/lib/debug//lib/x86_64-linux-gnu/libnss_files-2.24.so...done.
done.
0x7f36c9a08f0a in __mmap (addr=0x0, len=4096, prot=, 
flags=34, fd=, offset=0) at 
../sysdeps/unix/sysv/linux/wordsize-64/mmap.c:34
34  ../sysdeps/unix/sysv/linux/wordsize-64/mmap.c: No such file or 
directory.
(gdb) bt
#0  0x7f36c9a08f0a in __mmap (addr=0x0, len=4096, prot=, 
flags=34, fd=, offset=0) at 
../sysdeps/unix/sysv/linux/wordsize-64/mmap.c:34
#1  0x7f36c998a5d1 in sysmalloc (nb=nb@entry=32, av=) at 
malloc.c:2332
#2  0x7f36c998b50a in _int_malloc (av=av@entry=0x0, bytes=bytes@entry=8) at 
malloc.c:3862
#3  0x7f36c998dc0a in __libc_calloc (n=, 
elem_size=) at malloc.c:3281
#4  0x7f36c9f0e067 in ?? () from /lib/x86_64-linux-gnu/libdbus-1.so.3
#5  0x7f36c9f0a9e7 in dbus_message_get_path_decomposed () from 
/lib/x86_64-linux-gnu/libdbus-1.so.3
#6  0x7f36c9f0da93 in ?? () from /lib/x86_64-linux-gnu/libdbus-1.so.3
#7  0x7f36c9eff264 in dbus_connection_dispatch () from 
/lib/x86_64-linux-gnu/libdbus-1.so.3
#8  0x5628bc167506 in ?? ()
#9  0x7f3

[Bug 1638345] Re: avahi-daemon crashes multiple times an hour

[Sebastien Bacher]

@Tessa, could you get the valgrind log?

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[Bug 1638345] Re: avahi-daemon crashes multiple times an hour

[Sebastien Bacher]

is there also anything special about your avahi configuration? could be
worth also using gdb to get a backtrace of the service when it's using
the cpu...

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[Bug 1638345] Re: avahi-daemon crashes multiple times an hour

[Tessa]

It's worth noting that even when it doesn't crash, I see extended
periods where it's using 100% CPU on a single core, and has a defunct
child process. At that point, the only way to fix it is to kill -9 it.

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[Bug 1638345] Re: avahi-daemon crashes multiple times an hour

[Tessa]

This doesn't seem to be memory related. I've got 16GB of RAM, and it's
always < 50% used when avahi crashes. RSS on my avahi-daemon process
right now is only 6604.

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[Bug 1638345] Re: avahi-daemon crashes multiple times an hour

[FanJun Kong - ( BH1SCW )]

thanks seb for more info,

@Tessa, how many percent of memery using of avahi-daemon? I test for
long time and not any crash file found in /var/crash.

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[Bug 1638345] Re: avahi-daemon crashes multiple times an hour

[Sebastien Bacher]

upstream mailing list message about a similar issue,
https://lists.freedesktop.org/archives/avahi/2016-October/002439.html

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Title:
  avahi-daemon crashes multiple times an hour

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[Bug 1638345] Re: avahi-daemon crashes multiple times an hour

[Sebastien Bacher]

similar report on Debian but without much useful content,
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=841926 , seems it
started with 0.6.32

** Bug watch added: Debian Bug tracker #841926
   http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=841926

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Title:
  avahi-daemon crashes multiple times an hour

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[Bug 1638345] Re: avahi-daemon crashes multiple times an hour

[Sebastien Bacher]

Thanks FanJun for looking at this one

** Changed in: avahi (Ubuntu)
   Importance: Undecided => High

** Changed in: avahi (Ubuntu)
 Assignee: Canonical Desktop Team (canonical-desktop-team) => FanJun Kong - 
( BH1SCW ) (fjkong)

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  avahi-daemon crashes multiple times an hour

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[Bug 1638345] Re: avahi-daemon crashes multiple times an hour

[FanJun Kong - ( BH1SCW )]

I upgraded from 16.04 to 16.10 and using kernel of 4.8.0-30-generic, let
me test this and see if it will reproduced.

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  avahi-daemon crashes multiple times an hour

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[Bug 1638345] Re: avahi-daemon crashes multiple times an hour

[Brian Murray]

** Changed in: avahi (Ubuntu)
 Assignee: (unassigned) => Canonical Desktop Team (canonical-desktop-team)

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  avahi-daemon crashes multiple times an hour

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[Bug 1638345] Re: avahi-daemon crashes multiple times an hour

[Brian Murray]

Could somebody on the Desktop team take a look at this?

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  avahi-daemon crashes multiple times an hour

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[Bug 1638345] Re: avahi-daemon crashes multiple times an hour

[Jamie Eisenhart]

Same on my system (16.04, kernel 4.8.12)

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[Bug 1638345] Re: avahi-daemon crashes multiple times an hour

[Tessa]

Recent crash file for avahi-daemon.

** Attachment added: "_usr_sbin_avahi-daemon.0.crash.xz"
   
https://bugs.launchpad.net/ubuntu/+source/avahi/+bug/1638345/+attachment/4775053/+files/_usr_sbin_avahi-daemon.0.crash.xz

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  avahi-daemon crashes multiple times an hour

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[Bug 1638345] Re: avahi-daemon crashes multiple times an hour

[Tessa]

When I look at it with apport-retrace -g, it reports the following:

Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `avahi-daemon: running [lap'.
Program terminated with signal SIGABRT, Aborted.
#0  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:58
58  ../sysdeps/unix/sysv/linux/raise.c: No such file or directory.

Not sure if that's valid.

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[Bug 1638345] Re: avahi-daemon crashes multiple times an hour

[Brian Murray]

Well, this is the mostly frequently reported crash about avahi.

https://errors.ubuntu.com/problem/e3068628ffa22d8ed9dcdcccf7bfa88edaa6b5c7

The stacktrace indicates it OOM'ing.

#0  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:58
set = {__val = {0, 13338433739676818176, 140727378437776, 0, 
140727378437776, 140442759178355, 140727378437584, 140442774564936, 
140442776768528, 140442770201056, 140727378438144, 140727378438352, 
18446744073709551615, 140442774633396, 1, 0}}
pid = 
tid = 
#1  0x7fbb606943ea in __GI_abort () at abort.c:89
save_stage = 2
act = {__sigaction_handler = {sa_handler = 0x0, sa_sigaction = 0x0}, 
sa_mask = {__val = {0, 1, 210453397509, 0, 140442756836096, 135168, 
140442776768528, 140442770201056, 140727378438144, 28, 140442756925040, 28, 
140442772455840, 2, 18446744073709551615, 0}}, sa_flags = 1641156624, 
sa_restorer = 0x7fbb619041bc }
sigs = {__val = {32, 0 }}
#2  0x7fbb618fef7e in oom () at malloc.c:58
msg = "Out of memory, aborting ...\n"
n = 
#3  0x7fbb618ff12f in xmalloc (size=) at malloc.c:69
p = 

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[Bug 1638345] Re: avahi-daemon crashes multiple times an hour

[Brian Murray]

Could somebody provide a crash report or a link to one?

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  avahi-daemon crashes multiple times an hour

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[Bug 1638345] Re: avahi-daemon crashes multiple times an hour

[Launchpad Bug Tracker]

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

** Changed in: avahi (Ubuntu)
   Status: New => Confirmed

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[Bug 1638345] Re: avahi-daemon crashes multiple times an hour

[Chris]

Hi!
I have the same problem, but only when I am in a specific WiFi which uses 
MSCHPv2. In this case also my network manager crashes sometimes when resuming 
from sleep mode.

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