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

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Date:   Sun, 12 Feb 2017 16:45:50 +0100
From:   Bastien ROUCARIES <roucaries.bastien@...il.com>
To:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Cc:     fdmanana@...e.com, bo.li.liu@...cle.com, clm@...com
Subject: S2ram + btrfs with recent kernel => soft lockup warning and hard hang

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