Created attachment 701636 [details] strace of lsusb stopped with ^C after a delay. Description of problem: lsusb -t hangs and produces no output. This also blocks sosreport. Version-Release number of selected component (if applicable): How reproducible: every time. Steps to Reproduce: 1. lsusb -t Actual results: nothing happens Expected results: tree output of USB devices Additional info: Bug #814087 seems a bit similar but produced output and is for an older Fedora. strace was completed by me pressing ^C at the end. attached will be: strace backtrace at lockup point lsusb -v Additional info:
Created attachment 701637 [details] backtrace of a locked up LSUSB
Created attachment 701638 [details] lsusb -v output - N.B. does not lock up
Created attachment 702395 [details] possible patch
Can you please try this patch version? http://people.fedoraproject.org/~lnykryn/usbutils/006-4/
Yes; that seems to fix it. (running as normal user) [hoop@agata ~]$ lsusb -t (wait a very very long time) [hoop@agata ~]$ ./usr/bin/lsusb -t /: Bus 04.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/2p, 5000M /: Bus 03.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/2p, 480M /: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=ehci_hcd/2p, 480M |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/8p, 480M |__ Port 6: Dev 3, If 0, Class=Communications, Driver=, 480M |__ Port 6: Dev 3, If 1, Class=Communications, Driver=cdc_acm, 480M |__ Port 6: Dev 3, If 2, Class=CDC Data, Driver=cdc_acm, 480M |__ Port 6: Dev 3, If 3, Class=Communications, Driver=cdc_acm, 480M |__ Port 6: Dev 3, If 4, Class=CDC Data, Driver=cdc_acm, 480M |__ Port 6: Dev 3, If 5, Class=Communications, Driver=cdc_wdm, 480M |__ Port 6: Dev 3, If 6, Class=Communications, Driver=cdc_ncm, 480M |__ Port 6: Dev 3, If 7, Class=CDC Data, Driver=cdc_ncm, 480M |__ Port 6: Dev 3, If 8, Class=Communications, Driver=cdc_wdm, 480M |__ Port 6: Dev 3, If 9, Class=Communications, Driver=cdc_acm, 480M |__ Port 6: Dev 3, If 10, Class=CDC Data, Driver=cdc_acm, 480M |__ Port 8: Dev 4, If 0, Class=Application Specific Interface, Driver=, 12M |__ Port 8: Dev 4, If 1, Class=Chip/SmartCard, Driver=, 12M /: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=ehci_hcd/2p, 480M |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/6p, 480M |__ Port 4: Dev 3, If 0, Class=Wireless, Driver=btusb, 12M |__ Port 4: Dev 3, If 1, Class=Wireless, Driver=btusb, 12M |__ Port 4: Dev 3, If 2, Class=Vendor Specific Class, Driver=, 12M |__ Port 4: Dev 3, If 3, Class=Application Specific Interface, Driver=, 12M |__ Port 5: Dev 4, If 0, Class=Video, Driver=uvcvideo, 480M |__ Port 5: Dev 4, If 1, Class=Video, Driver=uvcvideo, 480M
Thanks for checking, I will prepare an update tomorrow.
usbutils-006-4.fc18 has been submitted as an update for Fedora 18. https://admin.fedoraproject.org/updates/usbutils-006-4.fc18
Package usbutils-006-4.fc18: * should fix your issue, * was pushed to the Fedora 18 testing repository, * should be available at your local mirror within two days. Update it with: # su -c 'yum update --enablerepo=updates-testing usbutils-006-4.fc18' as soon as you are able to. Please go to the following url: https://admin.fedoraproject.org/updates/FEDORA-2013-3074/usbutils-006-4.fc18 then log in and leave karma (feedback).
usbutils-006-4.fc18 has been pushed to the Fedora 18 stable repository. If problems still persist, please make note of it in this bug report.