Bug 771113
| Summary: | [abrt] kernel: WARNING: at /builddir/build/BUILD/kernel-3.1.fc16/compat-wireless-3.2-rc6-3/drivers/net/wireless/ath/ath9k/rc.c:697 ath_rc_get_highest_rix+0x158/0x1f0 [ath9k]() | ||||||
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| Product: | [Fedora] Fedora | Reporter: | Pavel Roskin <plroskin> | ||||
| Component: | kernel | Assignee: | John W. Linville <linville> | ||||
| Status: | CLOSED DUPLICATE | QA Contact: | Fedora Extras Quality Assurance <extras-qa> | ||||
| Severity: | unspecified | Docs Contact: | |||||
| Priority: | unspecified | ||||||
| Version: | 16 | CC: | gansalmon, idukke, itamar, jonathan, kernel-maint, krustev.svilen, leo, madhu.chinakonda, python.eu, rick, shafi.wireless, tho, tunstkt, veljogr | ||||
| Target Milestone: | --- | ||||||
| Target Release: | --- | ||||||
| Hardware: | x86_64 | ||||||
| OS: | Unspecified | ||||||
| Whiteboard: | abrt_hash:75dbdeb6d3f6e987e13230f62fde8ecaccec51c0 | ||||||
| Fixed In Version: | Doc Type: | Bug Fix | |||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2012-01-10 19:05:08 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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Description
Pavel Roskin
2012-01-01 15:20:45 UTC
I compiled the latest bleeding edge compat-wireless for 2011-12-31 and I would get the same thing. It's a warning at the end of ath_rc_get_highest_rix(), and the code looks like:
/* This should not happen */
WARN_ON(1);
The warnings happen in bursts. There are long periods with no warnings. I haven't seen this warning with other routers, but I'm not sure I have sufficient stats.
There are no interruptions in the wireless connection. If not the abrt icon, I would have been unaware of it.
*** Bug 770298 has been marked as a duplicate of this bug. *** *** Bug 771069 has been marked as a duplicate of this bug. *** *** Bug 771744 has been marked as a duplicate of this bug. *** *** Bug 771754 has been marked as a duplicate of this bug. *** Reported to ath9k-devel. Apparently it's an upstream bug. A comment in bug 771069 says the bug is triggered by the system waking up from sleep. That may explain why I haven't seen it on desktop systems and on the same laptop with self-compiled bleeding-edge kernels without power management. I tried the same system with other routers but could not trigger the bug. I'm going to see the "triggering" router soon, so I'll try to add some printk's to the code to see what's going on. Pinged ath9k-devel for some help... Created attachment 551707 [details]
Patch for compat-wireless to print everything relevant to the problem
I wrote this patch to print all information about the problem. However, I cannot reproduce the bug anymore, even with the same AP.
*** Bug 772107 has been marked as a duplicate of this bug. *** *** Bug 772941 has been marked as a duplicate of this bug. *** *** Bug 773019 has been marked as a duplicate of this bug. *** Bug 772107 comment 3 suggest using "nohwcrypt=1" as a modprobe option for ath9k to avoid this issue -- not sure I see the connection, but just in case it is helpful... *** This bug has been marked as a duplicate of bug 768639 *** |