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Message-ID: <20130313190141.GF5604@thunk.org>
Date: Wed, 13 Mar 2013 15:01:41 -0400
From: Theodore Ts'o <tytso@....edu>
To: Josh Triplett <josh@...htriplett.org>
Cc: linux-ext4@...r.kernel.org, linux-kernel@...r.kernel.org,
Andreas Dilger <adilger.kernel@...ger.ca>
Subject: Re: NULL pointer dereference in ext4_superblock_csum_set with
mounted filesystem
On Wed, Mar 13, 2013 at 11:59:13AM -0700, Josh Triplett wrote:
> I frequently test kernel changes by booting them with kvm's -kernel
> option, with -hda pointing to my host system's root filesystem, and
> -snapshot to prevent writing to (and likely corrupting) that root
> filesystem. I tried this with a kernel built from git commit
> 7c6baa304b841673d3a55ea4fcf9a5cbf7a1674b, with a stock x86-64 "make
> defconfig", and got a kernel panic:
Can you send me the output of "dumpe2fs -h" on your host system's root
file system?
Thanks,
- Ted
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