Bug 769766
| Summary: | tcpdump on wlan0 crashes system | ||||||||
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| Product: | [Fedora] Fedora | Reporter: | Stuart D Gathman <stuart> | ||||||
| Component: | kernel | Assignee: | Stanislaw Gruszka <sgruszka> | ||||||
| Status: | CLOSED ERRATA | QA Contact: | Fedora Extras Quality Assurance <extras-qa> | ||||||
| Severity: | unspecified | Docs Contact: | |||||||
| Priority: | unspecified | ||||||||
| Version: | 16 | CC: | gansalmon, itamar, jonathan, junk, jwboyer, kernel-maint, linville, madhu.chinakonda, nhorman, sgruszka | ||||||
| Target Milestone: | --- | Keywords: | Reopened | ||||||
| Target Release: | --- | ||||||||
| Hardware: | Unspecified | ||||||||
| OS: | Unspecified | ||||||||
| Whiteboard: | |||||||||
| Fixed In Version: | kernel-3.2.1-3.fc16 | Doc Type: | Bug Fix | ||||||
| Doc Text: | Story Points: | --- | |||||||
| Clone Of: | Environment: | ||||||||
| Last Closed: | 2012-01-24 07:57:14 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
Stuart D Gathman
2011-12-22 06:29:11 UTC
Can you provide a stack trace as recorded from a serial console? This is the only computer I have with a serial port. But I can take a picture of the stack trace on the console and attach it. Will do that in a little while. Created attachment 549230 [details]
photo of kernel oops screen
I have managed to collect a kdump vmcore. What should I extract from it to attach? I am a newbie to crash. It seems that crash is broken on f16 also: bug#742260 Any other way to extract useful info from vmcore? I have rt73usb, I'll see if I can reproduce that locally ... Retested with kernel-3.1.6-1.fc16.i686 Still crashes, got new vmcore. The "crash" utility still crashes. Created attachment 550844 [details]
wpa_check_key_NULL.patch
I was able to reproduce, and this patch prevent the crash. But I have to investigate issue a bit more to find out why key is NULL and to see if perhaps some better fix for the problem exist.
I installed an Atheros Communications Inc. AR2413 802.11bg NIC, and tcpdump works with that. I think this means that the problem is with rt73usb, not wireless in general, despite the patch in comment#8 being for wpa.c. That's way I'm still looking at that problem, I'm not sure if rt73usb driver do something wrong or mac80211 should be more resistant for rt73usb data. I think this should be fixed in mac80211. I posted fix here: http://marc.info/?l=linux-wireless&m=132627059504821&w=2 (In reply to comment #11) > I think this should be fixed in mac80211. > > I posted fix here: > http://marc.info/?l=linux-wireless&m=132627059504821&w=2 I added this to all 3 branches. Should be in the next respective builds of each. Thanks! kernel-3.1.9-1.fc16 has been submitted as an update for Fedora 16. https://admin.fedoraproject.org/updates/kernel-3.1.9-1.fc16 kernel-3.1.9-1.fc16 has been pushed to the Fedora 16 stable repository. If problems still persist, please make note of it in this bug report. We experiment with compat-wireless package. That mean there are two drivers installed, one in /lib/modules/`uname -r`/drivers/net/wireless/ second one in /lib/modules/`uname -r`/backports/drivers/net/wireless/ . By default compat-wireless (backport) modules are used, which does not include that fix AFAIK. To use in kernel modules, should be enough to remove "backport" entry from /etc/depmod.d/dist.conf and reboot the system. (In reply to comment #15) > We experiment with compat-wireless package. That mean there are two drivers > installed, one in /lib/modules/`uname -r`/drivers/net/wireless/ second one in > /lib/modules/`uname -r`/backports/drivers/net/wireless/ . By default > compat-wireless (backport) modules are used, which does not include that fix > AFAIK. > > To use in kernel modules, should be enough to remove "backport" entry from > /etc/depmod.d/dist.conf and reboot the system. Sigh. You are right. Knowing if and when we have to patch the backported drivers is a bit non-obvious. I'll reopen this for now and get it fixed, especially since we use those by default. OK. Should be fixed now. THIS TIME WITH FEELING! kernel-3.2.1-3.fc16 has been submitted as an update for Fedora 16. https://admin.fedoraproject.org/updates/kernel-3.2.1-3.fc16 Package kernel-3.2.1-3.fc16: * should fix your issue, * was pushed to the Fedora 16 testing repository, * should be available at your local mirror within two days. Update it with: # su -c 'yum update --enablerepo=updates-testing kernel-3.2.1-3.fc16' as soon as you are able to, then reboot. Please go to the following url: https://admin.fedoraproject.org/updates/FEDORA-2012-0876/kernel-3.2.1-3.fc16 then log in and leave karma (feedback). kernel-3.2.1-3.fc16 has been pushed to the Fedora 16 stable repository. If problems still persist, please make note of it in this bug report. |