[lxc-users] Seg fault when using VLAN mode network

[Serge Hallyn]

Quoting Serge Hallyn (serge.hallyn at ubuntu.com):
> Quoting Rory McCann (rory.mccann at riverbed.com):
> > Serge Hallyn <serge.hallyn at ...> writes:
> > > 
> > > Quoting Serge Hallyn (serge.hallyn <at> ubuntu.com):
> > > > Quoting Rory McCann (Rory.McCann <at> riverbed.com):
> > > ..
> > > > > Now, after exiting the container and re-running the lxc-execute
> > command, I straightaway get a
> > > segmentation fault, and the following kernel stacktrace:
> > > > > 
> > > > > [  169.728142] ------------[ cut here ]------------
> > > > > [  169.728151] WARNING: CPU: 0 PID: 1382 at
> > /build/buildd/linux-3.13.0/fs/sysfs/dir.c:486 sysfs_warn_dup+0x86/0xa0()
> > > > > [  169.728153] sysfs: cannot create duplicate filename
> > '/devices/pci0000:00/0000:00:16.0/0000:0b:00.0/net/eth1/upper_vlan10-0'
> > > > > [  169.728155] Modules linked in: 8021q garp mrp xt_CHECKSUM
> > iptable_mangle ipt_MASQUERADE
> > > iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat
> > nf_conntrack xt_tcpudp bridge stp
> > > llc iptable_filter ip_tables x_tables ppdev coretemp crct10dif_pclmul
> > crc32_pclmul
> > > ghash_clmulni_intel vmw_balloon aesni_intel aes_x86_64 lrw gf128mul
> > glue_helper ablk_helper
> > > cryptd serio_raw vmwgfx ttm drm vmw_vmci parport_pc i2c_piix4 shpchp lp
> > mac_hid parport psmouse
> > > vmxnet3 mptspi mptscsih mptbase floppy
> > > > > [  169.728204] CPU: 0 PID: 1382 Comm: lxc-execute Not tainted
> > 3.13.0-32-generic #57-Ubuntu
> > > > 
> > > > I don't get this bug, and this appears to be a simple kernel bugl.  Does
> > > > eth1 exist?
> > > 
> > > Oh, wow.  I do get kernel lockups on a trusty box.  When I upgrade to
> > > the linux-image-generic-lts-utopic kernel, that goes away.  Can you
> > > try that?
> > 
> > 
> > Thanks, upgrading to that kernel seems to have fixed the issue.
> > 
> > (Sorry for the gmane-forwarded post - I forgot to subscribe before sending
> > my first mail.)
> 
> Would you mind sending a bug report against the ubuntu 14.04 linux package?

Looks like we already have one, thanks.