linux-kernel - Problem with VMAP

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Message-ID: <CADDKRnB1=-zj8apQ3vBfbxVZ8Dc4DJbD1MHynC9azNpfaZeF6Q@mail.gmail.com>
Date:   Tue, 4 Oct 2016 14:27:21 +0200
From:   Jörg Otte <jrg.otte@...il.com>
To:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Andy Lutomirski <luto@...nel.org>
Cc:     Linus Torvalds <torvalds@...ux-foundation.org>,
        Ingo Molnar <mingo@...nel.org>
Subject: Problem with VMAP_STACK=y

With kernel 4.8.0-01558-g21f54dd I get thousands of
"dvb-usb: bulk message failed: -11 (1/0)"
messages in the logs and the DVB adapter is not working.

It tourned out the new config option VMAP_STACK=y (which is the default)
is the culprit.
No problems for me with VMAP_STACK=n.

Thanks, Jörg