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[Bug 114591] xfsdump failing with kernel issues inside vm

To: xfs-masters@xxxxxxxxxxx
Subject: [Bug 114591] xfsdump failing with kernel issues inside vm
From: bugzilla-daemon@xxxxxxxxxxxxxxxxxxx
Date: Thu, 24 Mar 2016 17:21:16 +0000
Auto-submitted: auto-generated
Delivered-to: xfs-masters@xxxxxxxxxxx
In-reply-to: <bug-114591-470@xxxxxxxxxxxxxxxxxxxxxxxxx/>
References: <bug-114591-470@xxxxxxxxxxxxxxxxxxxxxxxxx/>
https://bugzilla.kernel.org/show_bug.cgi?id=114591

--- Comment #28 from Eric Sandeen <sandeen@xxxxxxxxxx> ---
Michael, it's probably obvious but don't bother with Nick's patch, because a)
you already tested with that patch properly removed, and b) the attached patch
quite obviously won't compile.

Thanks for the bisect; I'm on vacation this week so I really don't have time to
look very closely, but that's an interesting failure point.  It might be
obvious to others why it would cause a problem, but not to me, yet.

Michel, can you tell from your backtraces & your binary, which of the 3 calls
to xfs_buf_free in xfs_buf_get_map led to the BUG?

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