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

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Message-ID: <a8ce83ef-efa6-e8b2-e61d-b03cd82b6c86@suse.com>
Date:   Mon, 13 Feb 2017 10:43:32 +0000
From:   Filipe Manana <fdmanana@...e.com>
To:     Bastien ROUCARIES <roucaries.bastien@...il.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Cc:     bo.li.liu@...cle.com, clm@...com
Subject: Re: S2ram + btrfs with recent kernel => soft lockup warning and hard
 hang



On 02/12/2017 03:45 PM, Bastien ROUCARIES wrote:
> 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.

3.8 is very old, and so is 3.19 (which is what you're running as shown
in the github issue). Many fixes landed after 3.19. Just try a recent
kernel.

> 
> 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
>