linux-kernel - Re: [ext4] BUG: sleeping function called from invalid context at fs/ext4/ext4

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Message-ID: <20140418152456.GA31301@thunk.org>
Date:	Fri, 18 Apr 2014 11:24:56 -0400
From:	Theodore Ts'o <tytso@....edu>
To:	Fengguang Wu <fengguang.wu@...el.com>
Cc:	LKML <linux-kernel@...r.kernel.org>, lkp@...org,
	Linux Ext4 <linux-ext4@...r.kernel.org>
Subject: Re: [ext4] BUG: sleeping function called from invalid context at
 fs/ext4/ext4_jbd2.c:252

On Thu, Apr 17, 2014 at 11:33:46AM +0800, Fengguang Wu wrote:
> 
> FYI, we noticed that simple dd write can trigger the below BUG in
> commit 208b9cc3a32f29b8a9bba682b5bfbb962bc9892d ("ext4: add a new
> spinlock i_raw_lock to protect the ext4's raw inode")

Yes, that was a buggy version of the patch that I thought was fairly
quickly replaced with a new version; something must have gone wrong
with how I pushed out my git branches.  Anyway I'm pretty sure it's
not there on ext4.git any more.  Let me know if you're still seeing
it, and from which branch.

Cheers,

					- Ted
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