Ubuntu
ifupdown package

ifquery segfaults if /run/network/ifstate file is not found

Bug #1416793 reported by Pas
146
This bug affects 33 people
Affects Status Importance Assigned to Milestone
ifupdown (Ubuntu)
Confirmed
Medium
Unassigned

Bug Description

This makes the ifup@.service systemd unit file sad.

version 0.7.48.1ubuntu6 [amd64]

command: ifquery --state eth0

after a mkdir /run/network/ and a touch /run/network/ifstate the command above runs, but produces no output.

Thanks for looking into this!

Tags: amd64 vivid
Pas (pasthelod)
summary: - ifquery segfaults if /run/network/ifquery file is not found
+ ifquery segfaults if /run/network/ifstate file is not found
Revision history for this message
Launchpad Janitor (janitor) wrote :

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

Changed in ifupdown (Ubuntu):
status: New → Confirmed
Patrik Lundquist (patrik-lundquist)
tags: added: vivid
tags: added: amd64
Revision history for this message
Patrik Lundquist (patrik-lundquist) wrote :

Happens to me on most boots of a Vivid server.

Alberto Salvia Novella (es20490446e)
Changed in ifupdown (Ubuntu):
importance: Undecided → Medium
Revision history for this message
zasran (erik-zasran) wrote :

See this message in dmesg:

[ 60.153267] ifquery[680]: segfault at 1 ip 00000000004031c8 sp 00007fffdb50e560 error 4 in ifup[400000+d000]

No other mentions of ifquery. Not sure if it's because of the missing file /run/network/ifquery (I do have /run/network/ifstate)

Revision history for this message
S. W. (cebit2006) wrote :

+1

still happens on

Ubuntu 15.10 (4.2.0-19-generic)

 ifquery[687]: segfault at 1 ip 0000000000403187 sp 00007ffdf5061fa0 error 4 in ifup[400000+d000]

Revision history for this message
Will Buckner (willbuckner) wrote :

I'm also seeing ifquery segfaults on all of my c4.xlarge instances running 15.10 with all updates applied.

Revision history for this message
Wladimir J. van der Laan (laanwj) wrote :

I have a similar, but different segfault at VM startup in ifquery with Ubuntu 15.10:

[ 4.184292] ifquery[392]: segfault at 0 ip 00007feb81430b10 sp 00007ffd18d03388 error 4 in libc-2.21.so[7feb813a5000+1c0000]

addr2line -aipfC -e /lib/x86_64-linux-gnu/libc-2.21.so 0x8bb10
0x000000000008bb10: strncmp at ??:?

So it segfaults in a string comparison somewhere. Unfortunately, as I can't reproduce it besides the startup process, I don't have more of a traceback.

Revision history for this message
Wladimir J. van der Laan (laanwj) wrote :

(this is with the Ubuntu cloud image, networking is working fine BTW, apart from the error message I don't think anything is wrong)

Revision history for this message
Imre Deak (ideak) wrote :

I saw this issue in 15.10 and reported it to the upstream Debian maintainer, see [1]. The fix attached there is now applied to the upstream ifupdown git repository.

[1] https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=819287

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