Bug#891036: Workaround found, the problem is with Debian configuration of kernel

From	"wzabolot@elektron.elka.pw.edu.pl" <wzabolot@elektron.elka.pw.edu.pl>
Newsgroups	linux.debian.bugs.dist, linux.debian.kernel
Subject	Bug#891036: Workaround found, the problem is with Debian configuration of kernel
Date	2018-02-23 01:10 +0100
Message-ID	<vm962-3WS-1@gated-at.bofh.it> (permalink)
References	<vlZgm-5tv-5@gated-at.bofh.it> <vm7nA-2DF-23@gated-at.bofh.it> <vm7QB-2QM-3@gated-at.bofh.it> <vlH06-1O8-3@gated-at.bofh.it> <vm7QB-2QM-3@gated-at.bofh.it>
Organization	linux.* mail to news gateway

Cross-posted to 2 groups.

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I have recompiled the kernel with modifed settings:

In the debian/config/config I have changed:
from
CONFIG_USBIP_VHCI_NR_HCS=8
to
CONFIG_USBIP_VHCI_NR_HCS=4

After installing the modified kernel I was able to get my remote device
attached and it worked correctly.

Probably the problem could be also solved by increasing the  MAXNPORT
from 128 to  240 or even to 256 in tools/usb/usbip/libsrc/vhci_driver.h
(modifying the kernel sources instead of the Debian configuration), but
I have not verified yet if that approach works.

-- 
Wojciech M Zabolotny, PhD
Institute of Electronic Systems
Faculty of Electronics and Information Technology
Warsaw University of Technology

Thread

Bug#891036: libusbip: error: port number exceeds 128 wzab <wzab@ise.pw.edu.pl> - 2018-02-21 19:10 +0100
  Bug#891036: More details - the problem is associated with the vhci-hcd driver. wzab <wzab@ise.pw.edu.pl> - 2018-02-21 20:00 +0100
  Bug#891036: Problem occurs in 4.13 and 4.14, but not in 4.12 "wzabolot@elektron.elka.pw.edu.pl" <wzabolot@elektron.elka.pw.edu.pl> - 2018-02-21 20:30 +0100
  Bug#891036: Problem still persists in kernel 4.15 "wzabolot@elektron.elka.pw.edu.pl" <wzabolot@elektron.elka.pw.edu.pl> - 2018-02-21 21:10 +0100
  Bug#891036: Even after updating "usbip" to usbip_2.0+4.15.4-1_amd64.deb problem remains "wzabolot@elektron.elka.pw.edu.pl" <wzabolot@elektron.elka.pw.edu.pl> - 2018-02-21 21:20 +0100
  Bug#891036: The problem is related to the number of ports created in vhci_hcd.0 Wojtek Zabolotny <W.Zabolotny@elka.pw.edu.pl> - 2018-02-22 14:40 +0100
    Bug#891036: The problem is related to the number of ports created in vhci_hcd.0 "wzabolot@elektron.elka.pw.edu.pl" <wzabolot@elektron.elka.pw.edu.pl> - 2018-02-22 23:20 +0100
      Bug#891036: The problem is related to the number of ports created in vhci_hcd.0 "wzabolot@elektron.elka.pw.edu.pl" <wzabolot@elektron.elka.pw.edu.pl> - 2018-02-22 23:50 +0100
        Bug#891036: Workaround found, the problem is with Debian configuration of kernel "wzabolot@elektron.elka.pw.edu.pl" <wzabolot@elektron.elka.pw.edu.pl> - 2018-02-23 01:10 +0100
        Bug#891036: Proposal - how to make usbip more resistant to misconfiguration "wzabolot@elektron.elka.pw.edu.pl" <wzabolot@elektron.elka.pw.edu.pl> - 2018-02-23 02:10 +0100
  Bug#891036: libusbip: error: port number exceeds 128 Gergely Risko <risko@debian.org> - 2018-05-22 18:20 +0200

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