[lxc-devel] segfault on shutdown if containers running

[Adam Majer]

Daniel Lezcano wrote:
>> Is this a known problem? If not, I'll provide the backtrace.
> 
> Yes, please, maybe I am missing something but I was not able to
> reproduce it.

I see to be failing at being able to safe this segfault. The computer
has no serial port so I've been trying to get netconsole to work, and it
does, but the entire OOPS is only visible on local console, not
transmitted. Only part of the oops is transmitted :(


[  635.526580] BUG: unable to handle kernel NULL pointer dereference at
000000000000009c
[  635.526692] IP: [<ffffffff803b26f1>] tty_open+0x1e6/0x411
[  635.526775] PGD 13dd44067 PUD 1379d5067 PMD 0
[  635.526905] Oops: 0000 [#1] SMP
[  635.526999] last sysfs file: /sys/devices/virtual/net/lo/operstate
[  635.527045] CPU 1
[  635.527110] Modules linked in: netconsole configfs veth nvidia(P)
binfmt_misc powernow_k8 cpufreq_powersave cpufreq_conservative
cpufreq_stats cpufreq_userspace tun bridge stp ext2 mbcache it87
hwmon_vid loop firewire_sbp2 snd_hda_codec_analog snd_hda_intel
snd_hda_codec snd_hwdep snd_pcm_oss snd_mixer_oss snd_pcm snd_seq_midi
snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device usblp
k8temp i2c_nforce2 pcspkr snd evdev asus_atk0110 i2c_core soundcore
snd_page_alloc button processor xfs exportfs raid1 md_mod



So, I've copied the stacktrace on paper and typing it back,

Process getty (pid:3940) <<<-- looks like a process in the container?

chrdev_open + 0x148/0x167
chrdev_open + 0x0/0x167
__dentry_open + 0x148/0x260
do_flip_open + 0x468/0x85a
alloc_fd + ....
do_sys_gen + ...
system_call_fastpath + ....

RIP tty_open

- Adam