S2ram + btrfs with recent kernel => soft lockup warning and hard hang

[Bastien ROUCARIES]

Hi,

Since 3.8 s2ram on btrfs system lead to hang.

Could not save a trace will try to get a few picture but trace are similar to :
https://github.com/docker/docker/issues/15654
and
https://patchwork.kernel.org/patch/8352811/

It is 100% reproducible.

mount table
/dev/mapper/portable2015--bastien--vg-HOME on /var/cache/pbuilder type
btrfs (rw,relatime,lazytime,compress=zlib,space_cache,subvolid=934,subvol=/pbuilder)
/dev/mapper/portable2015--bastien--vg-HOME on /home type btrfs
(rw,nosuid,nodev,relatime,lazytime,compress=zlib,space_cache,subvolid=933,subvol=/home)

btrfs is over dm-crypt

Bastien