On 11/26/12 09:00, Or Gerlitz wrote:
On Fri, Nov 23, 2012 at 2:10 PM, Bart Van Assche <[email protected]> wrote:
Apparently unloading the ib_ipoib kernel module triggers a circular locking
dependency complaint. Has anyone already been looking into this ?
Yes, I see that this happens here e.g when doing hot-unplug to the
underlying HW driver, seems related to the ipoib rtnl ops patches I
pushed to 3.7 -- will look into this, thanks for bringing this up.
Does anyone has an idea where the "s_active" lock is defined and what
is its role?
(replying to an e-mail from a few months ago)
I still see this with kernel 3.8.0. This warning probably means that
sysfs_remove_dir() is invoked with the rtnl lock held. If so I think
that this can trigger a deadlock during module removal.
Bart.
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