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Date:	Thu, 20 Jun 2013 12:34:06 -0400
From:	Theodore Ts'o <>
To:	Dustin Lundquist <>
Subject: Re: kernel BUG at fs/buffer.c:1234!

On Thu, Jun 20, 2013 at 09:20:01AM -0700, Dustin Lundquist wrote:
> Since the system is still half way responsive after this occurs, is
> there any other information I can gather after if occurs to aid in
> diagnosing this?

Hmm.... the only thing I can think of is to sprinkle in some


calls in various top-half routines in ext4 code, especially in
ext4_lookup() and ext4_find_entry(), and perhaps in the vfs layer to
see if we can figure out where the interrupts are getting disabled.
The fact that blkcipher_walk_done() was showing up in the stack trace
is certainly suspicious.

					- Ted
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