linux-kernel - Re: 3.11.4: kernel BUG at fs/buffer.c:1268

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Message-ID: <20131031194348.29940.qmail@science.horizon.com>
Date:	31 Oct 2013 15:43:48 -0400
From:	"George Spelvin" <linux@...izon.com>
To:	adilger@...ger.ca, linux@...izon.com
Cc:	jack@...e.cz, linux-fsdevel@...r.kernel.org,
	linux-kernel@...r.kernel.org, viro@...iv.linux.org.uk
Subject: Re: 3.11.4: kernel BUG at fs/buffer.c:1268

Andreas Dilger asked:
> What kind of storage stack is underneath this filesystem?  If
> it is deep (e.g. DM + LVM + iSCSI) then the stack overflow is
> definitely possible.

ext4 on md raid1 on SATA.  Nothing too complicated.

Personalities : [raid0] [raid1] 
md1 : active raid1 sdb2[1] sda2[0]	# Root partition
      41942976 blocks [2/2] [UU]
      
md2 : active raid1 sdb3[1] sda3[0]	# /home partition
      100663232 blocks [2/2] [UU]
      
md0 : active raid1 sdb1[1] sda1[0]	# Swap partition
      25165696 blocks [2/2] [UU]
      
unused devices: <none>


There's 8G of RAM, and a large swap partition because I download
a lot of videos to tmpfs on /tmp.  (/tmp is capped at 16G, and swap
is 24G, so I shouldn't run out, but there was certainly quite
a few GB of stuff there.)
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