tc Segmentation fault on amd64 Xen dom0

[agent 8131]

Binary package hint: iproute

iproute: 20071016-1
linux-image-2.6.24-12-xen: 2.6.24-12.22
xen-hypervisor-3.2: 3.2.0-0ubuntu9

uname -a: Linux hostname 2.6.24-12-xen #1 SMP Thu Mar 13 00:19:55 UTC 2008 x86_64 GNU/Linux

# tc qdisc
Segmentation fault

# tc qdisc show dev eth0
Segmentation fault

# tc -s qdisc show dev eth0
Segmentation fault

I'd note that this is a release critical bug. You can't release an OS with bugs in the iproute package and expect people to use it.

[agent 8131 (agent-8131)]

I can confirm that this affects amd64 systems running both Ubuntu Desktop and Ubuntu Server in 8.04 beta without Xen.

[AlienMind (beawevou)]

# strace tc qdisc show dev ppp0
..
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7fce000
open("/usr/lib/tc/q_prio.so", O_RDONLY) = -1 ENOENT (No such file or directory)
--- SIGSEGV (Segmentation fault) @ 0 (0) ---

# ls /usr/lib/tc/q_prio.so
ls: cannot access /usr/lib/tc/q_prio.so: No such file or directory

hardy server after "apt-get upgrade":
iproute 20071016-1
linux-image-2.6.24-12-server
Linux servername 2.6.24-12-server #1 SMP Wed Mar 12 23:34:17 UTC 2008 i686 GNU/Linux

[Launchpad Janitor (janitor)]

This bug was fixed in the package iproute - 20071016-1ubuntu1

---------------
iproute (20071016-1ubuntu1) hardy; urgency=low

  * debian/patches/tc_qdisc_segv.patch: Fix an off-by-one error that causes
    segfaults in tc on amd64. LP: #210541.
  * Modify Maintainer value to match the DebianMaintainerField
    specification.

 -- Steve Langasek <email address hidden> Wed, 09 Apr 2008 05:25:02 +0000