Bug 234900
| Summary: | b2c2-flexcop-pci causes lockdep lock | ||||||
|---|---|---|---|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | Hendrik Borghorst <hendrikborghorst> | ||||
| Component: | kernel | Assignee: | Kernel Maintainer List <kernel-maint> | ||||
| Status: | CLOSED UPSTREAM | QA Contact: | Brian Brock <bbrock> | ||||
| Severity: | urgent | Docs Contact: | |||||
| Priority: | medium | ||||||
| Version: | rawhide | CC: | jarod, mkrufky | ||||
| Target Milestone: | --- | ||||||
| Target Release: | --- | ||||||
| Hardware: | i386 | ||||||
| OS: | Linux | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | Doc Type: | Bug Fix | |||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2007-05-18 13:14:58 UTC | Type: | --- | ||||
| Regression: | --- | Mount Type: | --- | ||||
| Documentation: | --- | CRM: | |||||
| Verified Versions: | Category: | --- | |||||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||
| Cloudforms Team: | --- | Target Upstream Version: | |||||
| Embargoed: | |||||||
| Attachments: |
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Created attachment 151655 [details]
Patch to fix the problem
In the flexcop-pci.c spin_lock is used before it was initialized by
spin_lock_init. Hope to include this.
Has this been sent upstream at all yet? I don't see it in the main v4l-dvb tree, but that doesn't mean someone already knows about it... If not, Michael, can I talk you into taking a look at it? :) I've got a box with a b2c2-flexcop-pci card I can throw a rawhide kernel at pretty easily to see if I can reproduce and validate the fix, if it helps. Patrick maintains this driver... There is discussion in the following thread: http://linuxtv.org/pipermail/linux-dvb/2007-April/016985.html Mauro pushed the patch into v4l-dvb.hg master repository today: http://linuxtv.org/hg/v4l-dvb?cmd=changeset;node=a80058519add Works fine with the latest kernels in my own b2c2-flexcop-pci box. |
Description of problem: I've installed FC7T3 and it tries to boot but when it tries loading udev it locks up with the message: "the code is fine but needs lockdep annotation. > [13440.772455] turning off the locking correctness validator." and some debug printout. If I blacklist the b2c2-flexcop-pci module than FC7 boots right. Version-Release number of selected component (if applicable): Fedora 7 Rawhide How reproducible: 100% every reboot Steps to Reproduce: 1.modprobe b2c2-flexcop-pci 2.see the lock 3. Actual results: System freeze Expected results: working dvb :-) Additional info: I've an Technisat Airstar 2 DVB-T Card.