Kernel Bug Tracker – Bug 33792
lockdep trace when unplugging usb audio (.39rc4)
Last modified: 2013-11-13 17:31:36 UTC
Subject : lockdep trace when unplugging usb audio (.39rc4)
Submitter : Dave Jones <email@example.com>
Date : 2011-04-19 18:07
Message-ID : 20110419180745.GA438@redhat.com
References : http://marc.info/?l=linux-kernel&m=130323648920431&w=2
This entry is being used for tracking a regression from 2.6.38. Please don't
close it until the problem is fixed in the mainline.
I see this when suspending my laptop in 2.6.39-rc7. I've seen these warnings since 2.6.39-rc2 (didn't try rc1), although I can't remember if exactly the same warning. Don't see any warnings in 2.6.38.
Is it worth me spending the time to try and bisect it, or is the problem obvious from the log?
I just saw this exact same circular locking warning on v2.6.38
OK, suppose it's a post-2.6.37 regression.
The race must have been already fixed in the upstream.